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User Manual: Laser Printer HP LaserJet 4MV - Service manuals and Schematics, Disassembly / Assembly. Free.

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Service Manual

HP LaserJet 4V / 4MV

(C3141A / C3142A)

Hewlett-Packard Company

1994

Reproduction, adaptation, or

translation without prior

written permission is

prohibited, except as

allowed under the copyright

laws.

Publication number

C3141-90929

First edition, July 1994

Printed in USA

Warranty

The information contained

in this document is subject

to change without notice.

Hewlett-Packard makes no

warranty of any kind with

regard to this material,

including, but not limited to,

the implied warranties or

merchantability and fitness

for a particular purpose.

Hewlett-Packard shall not

be liable for errors contained

herein or for incidental or

consequential damaged in

connection with the

furnishing, performance, or

use of this material.

WARNING

Electrical Shock Hazard

To avoid electrical shock,

use only supplied power

cords and connect only to

properly grounded (3-hole)

wall outlets.

Hewlett-Packard Company

11311 Chinden Boulevard

Boise, Idaho 83714

Conventions

This manual uses the following conventions:

Color is used to emphasize items which are important to the material under

discussion.

The names of major printer parts and assemblies are Capitalized.

Bold is used for emphasis, particularly in situations where italic type would

be confusing.

Italic type is used to indicate related documents or emphasis.

COMPUTER type indicates text as seen on a computer monitor.

[Keyface] indicates keys on a computer keyboard or on the printer control

panel. Examples include [Form Feed] , [Enter] and [On Line].

NOTE Notes contain important information set off from the text.

CAUTION Caution messages alert you to the possibility of damage to equipment or

loss of data.

WARNING! Warning messages alert you to the possibility of personal injury.

Chapter Descriptions

1Product Information

Orientation to the printer, as well as the service and repair philosophy is

discussed. Information on obtaining assistance and warranty is also here.

2Site Requirements

Here are recommendations pertaining to installation requirements.

3Operating Overview

This chapter has detailed information about the Control Panel. Sample self

tests and printer reset information are also included.

4Maintenance

Turn to this chapter for information about printer cleaning.

5Functional Overview

Here you will find the basic theory-of-operation information required to

understand the various printer systems and how they function together.

6Removal and Replacement

This chapter contains the step-by-step procedures for replacing printer field

replaceable units (FRUs). Assemblies are grouped by location in the printer.

7Troubleshooting

Diagnose printer problems here. Preliminary troubleshooting table is

followed by error messages, image defect samples, and diagnostic tools.

8Parts and Diagrams

Look here to find any field replaceable unit (FRU) in the printer. Exploded

view drawings are accompanied by complete part number tables.

AParts Index

All parts are sorted and cross-referenced here by part number and name.

BI/O Information

This appendix contains cabling and pin-out information for parallel and

LocalTalk interfaces which are supported by the printer.

CRegulatory Information

Here are required statements regarding RFI and laser safety.

Subject Index

Use the subject index to quickly locate any information in the manual.

List of Figures

Figure 1-1 Sample Model and Serial Number Labels . . . . . . . . . . 1-5

Figure 1-2 Front and Rear Side View . . . . . . . . . . . . . . . . . . 1-11

Figure 1-3 Rear and Left Side View . . . . . . . . . . . . . . . . . . . 1-12

Figure 1-4 Front View with Front Cover Open . . . . . . . . . . . . . 1-13

Figure 1-5 Internal Assembly Locations (1 of 2) . . . . . . . . . . . . . 1-14

Figure 1-6 Internal Assembly Locations (2 of 2) . . . . . . . . . . . . . 1-15

Figure 1-7 Sample 5% Page Coverage . . . . . . . . . . . . . . . . . . 1-17

Figure 2-1 Printer Space Requirements . . . . . . . . . . . . . . . . . 2-4

Figure 3-1 Control Panel Layout . . . . . . . . . . . . . . . . . . . . . 3-3

Figure 3-2 Service Mode Menus . . . . . . . . . . . . . . . . . . . . . 3-16

Figure 3-3 Self Test Printout (printed in Service Mode) . . . . . . . . 3-21

Figure 3-4 Engine Test . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22

Figure 5-1 Printer Functional Block Diagram . . . . . . . . . . . . . . 5-3

Figure 5-2 Power Supply/Power Distribution . . . . . . . . . . . . . . 5-4

Figure 5-3 Formatter PCA Block Diagram . . . . . . . . . . . . . . . 5-10

Figure 5-4 EconoMode vs Normal Mode . . . . . . . . . . . . . . . . . 5-12

Figure 5-5 Image Formation Block Diagram . . . . . . . . . . . . . . 5-17

Figure 5-6 Photosensitive Drum . . . . . . . . . . . . . . . . . . . . . 5-18

Figure 5-7 Drum Cleaning . . . . . . . . . . . . . . . . . . . . . . . . 5-19

Figure 5-8 Primary Charging Roller . . . . . . . . . . . . . . . . . . . 5-20

Figure 5-9 Image Writing . . . . . . . . . . . . . . . . . . . . . . . . . 5-21

Figure 5-10 Image Development . . . . . . . . . . . . . . . . . . . . . . 5-22

Figure 5-11 Image Transferring . . . . . . . . . . . . . . . . . . . . . . 5-23

Figure 5-12 Image Fusing . . . . . . . . . . . . . . . . . . . . . . . . . 5-24

Figure 5-13 Paper Path . . . . . . . . . . . . . . . . . . . . . . . . . . 5-25

Figure 5-14 Clutches and Sensors . . . . . . . . . . . . . . . . . . . . . 5-26

Figure 5-15 General Timing Diagram . . . . . . . . . . . . . . . . . . . 5-29

Figure 6-1 Phillips vs. Posidriv Screwdrivers . . . . . . . . . . . . . . 6-4

Figure 6-2 Removing the Control Panel . . . . . . . . . . . . . . . . . 6-8

Figure 6-3 Upper Cover . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9

Figure 6-4 Static Charge Eliminator . . . . . . . . . . . . . . . . . . . 6-10

Figure 6-5 Removing Side Covers . . . . . . . . . . . . . . . . . . . . 6-11

Figure 6-6 Removing Rear Cover . . . . . . . . . . . . . . . . . . . . . 6-12

Figure 6-7 Exhaust Fan . . . . . . . . . . . . . . . . . . . . . . . . . 6-13

Figure 6-8 High Voltage Power Supply PCA . . . . . . . . . . . . . . 6-14

Figure 6-9 Cassette Size Sensor Assembly . . . . . . . . . . . . . . . 6-15

Figure 6-10 Card Cage . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16

Figure 6-11 Rear Exhaust Fan . . . . . . . . . . . . . . . . . . . . . . 6-17

Figure 6-12 Power Supply Unit . . . . . . . . . . . . . . . . . . . . . . 6-18

Figure 6-13 DC Controller PCA . . . . . . . . . . . . . . . . . . . . . . 6-19

Figure 6-14 Laser/Scanner Assembly . . . . . . . . . . . . . . . . . . . 6-20

Figure 6-15 Main Motor . . . . . . . . . . . . . . . . . . . . . . . . . . 6-21

Figure 6-16 Main Drive Assembly Removal (1 of 2) . . . . . . . . . . . 6-22

iii

Figure 6-17 Main Drive Assembly Removal (2 of 2) . . . . . . . . . . . 6-23

Figure 6-18 Drum Drive Assembly . . . . . . . . . . . . . . . . . . . . 6-24

Figure 6-19 Transfer Roller Assembly . . . . . . . . . . . . . . . . . . 6-25

Figure 6-20 Fusing Assembly . . . . . . . . . . . . . . . . . . . . . . . 6-26

Figure 6-21 Fuser Inlet Guide . . . . . . . . . . . . . . . . . . . . . . . 6-27

Figure 6-22 Paper Guide Plate Assembly . . . . . . . . . . . . . . . . . 6-28

Figure 6-23 MP Guide Plate . . . . . . . . . . . . . . . . . . . . . . . . 6-29

Figure 6-24 MP Drive Gears . . . . . . . . . . . . . . . . . . . . . . . 6-30

Figure 6-25 Fuser Door . . . . . . . . . . . . . . . . . . . . . . . . . . 6-31

Figure 6-26 MP Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-32

Figure 6-27 Front Door Assembly . . . . . . . . . . . . . . . . . . . . . 6-33

Figure 6-28 Upper and Lower Delivery Roller Assemblies . . . . . . . 6-34

Figure 6-29 Delivery Gear Assembly . . . . . . . . . . . . . . . . . . . 6-35

Figure 6-30 Cartridge Guide . . . . . . . . . . . . . . . . . . . . . . . 6-36

Figure 6-31 Cassette Pickup Roller Assembly . . . . . . . . . . . . . . 6-37

Figure 6-32 Separation Pad . . . . . . . . . . . . . . . . . . . . . . . . 6-38

Figure 6-33 Registration Roller (1 of 2) . . . . . . . . . . . . . . . . . . 6-39

Figure 6-34 Registration Roller (2 of 2) . . . . . . . . . . . . . . . . . . 6-40

Figure 6-35 Registration Roller Guide Plate . . . . . . . . . . . . . . . 6-41

Figure 6-36 Anti-Static Brush . . . . . . . . . . . . . . . . . . . . . . . 6-42

Figure 6-37 Paper Guide . . . . . . . . . . . . . . . . . . . . . . . . . 6-43

Figure 6-38 Left Side Foot . . . . . . . . . . . . . . . . . . . . . . . . . 6-44

Figure 7-1 Paper Path and Components . . . . . . . . . . . . . . . . 7-4

Figure 7-2 Engine Test Button and Printout . . . . . . . . . . . . . . 7-31

Figure 7-3 Repetitive Image Defect Ruler . . . . . . . . . . . . . . . . 7-36

Figure 7-4 DC Controller Inputs . . . . . . . . . . . . . . . . . . . . . 7-38

Figure 7-5 DC Controller Outputs (1 of 2) . . . . . . . . . . . . . . . . 7-39

Figure 7-6 DC Controller Outputs (2 of 2) . . . . . . . . . . . . . . . . 7-40

Figure 7-7 Main Wiring Diagram . . . . . . . . . . . . . . . . . . . . 7-41

Figure 8-1 Major Assembly Locations . . . . . . . . . . . . . . . . . . 8-9

Figure 8-2 Covers and Doors . . . . . . . . . . . . . . . . . . . . . . . 8-10

Figure 8-3 Foot Assemblies . . . . . . . . . . . . . . . . . . . . . . . 8-12

Figure 8-4 Front Door Components (Page 1 of 2) . . . . . . . . . . . . 8-14

Figure 8-5 Front Door Components (Page 2 of 2) . . . . . . . . . . . . 8-16

Figure 8-6 Output Components . . . . . . . . . . . . . . . . . . . . . 8-18

Figure 8-7 Internal Components (Page 1 of 4) . . . . . . . . . . . . . 8-20

Figure 8-8 Internal Components (Page 2 of 4) . . . . . . . . . . . . . 8-22

Figure 8-9 Internal Components (Page 3 of 4) . . . . . . . . . . . . . 8-24

Figure 8-10 Internal Components (Page 4 of 4) . . . . . . . . . . . . . 8-26

Figure 8-11 Card Cage Assembly . . . . . . . . . . . . . . . . . . . . . 8-28

Figure B-2 Connecting to the END of a LocalTalk Network . . . . . . B-2

Figure B-3 Connecting to the MIDDLE of a LocalTalk Network (1 of 2) B-3

Figure B-4 Connecting to the MIDDLE of a LocalTalk Network (2 of 2) B-3

Figure B-5 I/O Connector Locations . . . . . . . . . . . . . . . . . . . B-4

Figure C-1 VCCI Statement (Japan) . . . . . . . . . . . . . . . . . . . C-4

List of Tables

Table 1-1 Printer Features . . . . . . . . . . . . . . . . . . . . . . . 1-3

Table 1-2 Paper Capacities and Sizes . . . . . . . . . . . . . . . . . . 1-4

Table 1-3 Printer Dimensions . . . . . . . . . . . . . . . . . . . . . . 1-6

Table 1-4 Electrical Specifications . . . . . . . . . . . . . . . . . . . 1-6

Table 1-5 Acoustic Emissions . . . . . . . . . . . . . . . . . . . . . . 1-7

Table 1-6 Related Documentation . . . . . . . . . . . . . . . . . . . . 1-19

Table 2-1 Printer and Toner Cartridge Environmental Conditions . . 2-4

Table 3-1 Indicator Lights . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Table 3-2 Control Panel Keys . . . . . . . . . . . . . . . . . . . . . . 3-5

Table 3-3 Settings and Defaults . . . . . . . . . . . . . . . . . . . . . 3-6

Table 3-4 Control Panel Menu Map . . . . . . . . . . . . . . . . . . 3-7

Table 3-5 Printing Menu Items . . . . . . . . . . . . . . . . . . . . . 3-8

Table 3-6 PCL Menu Items . . . . . . . . . . . . . . . . . . . . . . . 3-9

Table 3-7 Job Menu Items . . . . . . . . . . . . . . . . . . . . . . . . 3-10

Table 3-8 Configuration Menu Items . . . . . . . . . . . . . . . . . . 3-11

Table 3-9 Memory Configuration Items . . . . . . . . . . . . . . . . 3-12

Table 3-10 Parallel Menu Items . . . . . . . . . . . . . . . . . . . . . 3-13

Table 3-11 Test Menu Items . . . . . . . . . . . . . . . . . . . . . . . 3-14

Table 3-12 Other Service Menu Items . . . . . . . . . . . . . . . . . . 3-18

Table 3-13 Menu of Resets . . . . . . . . . . . . . . . . . . . . . . . . 3-24

Table 5-1 Clutches and Sensors . . . . . . . . . . . . . . . . . . . . . 5-26

Table 7-1 Status Messages . . . . . . . . . . . . . . . . . . . . . . . 7-6

Table 7-1 Status Messages — continued . . . . . . . . . . . . . . . . 7-7

Table 7-1 Status Messages — continued . . . . . . . . . . . . . . . . 7-8

Table 7-1 Status Messages — continued . . . . . . . . . . . . . . . . 7-9

Table 7-1 Status Messages — continued . . . . . . . . . . . . . . . . 7-10

Table 7-2 Service and Error Messages . . . . . . . . . . . . . . . . . 7-11

Table 7-2 Service and Error Messages — continued . . . . . . . . . . 7-12

Table 7-2 Service and Error Messages — continued . . . . . . . . . . 7-13

Table 7-2 Service and Error Messages — continued . . . . . . . . . . 7-14

Table 7-2 Clearable Warning Messages . . . . . . . . . . . . . . . . 7-15

Table 7-4 Blank (White) Page . . . . . . . . . . . . . . . . . . . . . . 7-21

Table 7-5 Black Page . . . . . . . . . . . . . . . . . . . . . . . . . . 7-22

Table 7-6 Faded Print . . . . . . . . . . . . . . . . . . . . . . . . . . 7-23

Table 7-7 White Stripes (parallel to path) . . . . . . . . . . . . . . . 7-24

Table 7-8 Black Lines (perpendicular to path) . . . . . . . . . . . . . 7-24

Table 7-9 Black Lines (parallel to path) . . . . . . . . . . . . . . . . 7-25

Table 7-10 Repetitive Defects . . . . . . . . . . . . . . . . . . . . . . . 7-25

Table 7-11 Bubble Print . . . . . . . . . . . . . . . . . . . . . . . . . . 7-26

Table 7-12 Dropout . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-26

Table 7-13 Character Voids . . . . . . . . . . . . . . . . . . . . . . . . 7-27

Table 7-14 Background Scatter (or Leading Edge Halo) . . . . . . . . 7-28

Table 7-15 Partial Blank Page . . . . . . . . . . . . . . . . . . . . . . 7-28

Table 7-16 Faulty Registration . . . . . . . . . . . . . . . . . . . . . . 7-29

Table 7-17 Smeared Print . . . . . . . . . . . . . . . . . . . . . . . . 7-30

Table 7-18 Compressed Print . . . . . . . . . . . . . . . . . . . . . . 7-30

Table 7-19 Image Skew . . . . . . . . . . . . . . . . . . . . . . . . . . 7-30

Table 7-20 High Voltage System Checks . . . . . . . . . . . . . . . . 7-34

Table 7-21 Causes of Paper Curl . . . . . . . . . . . . . . . . . . . . . 7-35

Table 8-1 Accessories and Supplies . . . . . . . . . . . . . . . . . . . 8-5

Table 8-1 Accessories and Supplies - continued . . . . . . . . . . . . 8-6

Table 8-A Common Fasteners Used in the Printer . . . . . . . . . . . 8-7

Table 8-A Common Fasteners Used in the Printer - continued . . . . 8-8

Table 8-B Replaceable Cables . . . . . . . . . . . . . . . . . . . . . . 8-8

Table 8-2 Covers and Doors . . . . . . . . . . . . . . . . . . . . . . . 8-11

Table 8-3 Foot Assemblies . . . . . . . . . . . . . . . . . . . . . . . 8-13

Table 8-4 Front Door Components (1 of 2) . . . . . . . . . . . . . . . 8-15

Table 8-5 Front Door Components (2 of 2) . . . . . . . . . . . . . . . 8-17

Table 8-6 Output Components . . . . . . . . . . . . . . . . . . . . . 8-19

Table 8-7 Internal Components (1 of 4) . . . . . . . . . . . . . . . . 8-21

Table 8-8 Internal Components (2 of 4) . . . . . . . . . . . . . . . . 8-23

Table 8-9 Internal Components (3 of 4) . . . . . . . . . . . . . . . . 8-25

Table 8-10 Internal Components (4 of 4) . . . . . . . . . . . . . . . . 8-27

Table 8-11 Card Cage Assembly . . . . . . . . . . . . . . . . . . . . . 8-29

Table 8-12 Optional Lower Cassette Assembly . . . . . . . . . . . . . 8-30

Table B-1 Novell NetWare Frame Types . . . . . . . . . . . . . . . . B-6

Product Information

Chapter Contents

Printer Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Paper Capacities and Sizes . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Model and Serial Numbers . . . . . . . . . . . . . . . . . . . . . . . 1-5

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Media Selection Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Envelopes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Adhesive Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

Transparencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

Storing Print Media . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

Shipping Print Media . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

External Assembly Locations (1 of 2) . . . . . . . . . . . . . . . . . . 1-11

External Assembly Locations (2 of 2) . . . . . . . . . . . . . . . . . . 1-12

Front Door Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13

Internal Assembly Locations (1 of 2) . . . . . . . . . . . . . . . . . . 1-14

Internal Assembly Locations (2 of 2) . . . . . . . . . . . . . . . . . . 1-15

Service Approach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16

Ordering Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16

Phone numbers for the various sources are: . . . . . . . . . . . . . . 1-16

Exchange Program . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16

Consumables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16

Toner Cartridge Life . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17

Refilled Toner Cartridges . . . . . . . . . . . . . . . . . . . . . . . . 1-18

Recycling Toner Cartridges . . . . . . . . . . . . . . . . . . . . . . . 1-18

Related Documentation and Training Media . . . . . . . . . . . . . . 1-19

Product Information 1-1

Technical Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20

HP AUDIO-TIPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20

HP FIRST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20

HP FIRST, U.S. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20

HP FIRST, Europe . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20

HP CompuServe Forum . . . . . . . . . . . . . . . . . . . . . . . . . 1-21

North American Response Center (NARC) . . . . . . . . . . . . . . . 1-21

Other Areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21

Warranty Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22

One Year Return to HP Authorized Repair Station . . . . . . . . . . 1-22

Exclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22

1-2 Product Information

Printer Features

Features LaserJet 4V

(C3141A) LaserJet 4MV

(C3142A)

Print Speed 16 ppm letter or A4

8 ppm ledger (11x17) or A3 16 ppm letter or A4

8 ppm ledger (11x17) or A3

Text & Graphics Resolution 600 dpi; plus Resolution

Enhancement technology (REt) 600 dpi; plus Resolution

Enhancement technology (REt)

Printer Language(s)

Standard

Optional

Enhanced PCL 5

Adobe PostScript Level 2

Enhanced PCL 5

Adobe PostScript Level 2

None

Monthly Usage (pages) Up to 35,000 Up to 35,000

Memory:

Standard1

Optional (maximum)24 Mbyte

68 Mbyte total 12 Mbyte

44 Mbyte total

Internal Typefaces 45 PCL 45 PCL, 35 PostScript

Cartridge Slots 00

Standard Interfaces Bi-Tronics Parallel (IEEE 1284) Bi-Tronics Parallel (IEEE 1284)

JetDirect MIO

Power Control Power Save Mode Power Save Mode

Control Panel 8 Keys,

16 Character VFD Display 8 Keys,

16 Character VFD Display

EconoMode (toner saving) Ye s Ye s

1 Printer memory is optimized with Memory Enhancement Technology (MEt).

2 SIMMS available for use include 1, 2, 4, 8, and 16 Mbtye Modules. See “Accessories & Supplies”

in Chapter 8 for option product numbers.

Table 1-1 Printer Features

Product

Information

Product Information 1-3

Paper Capacities and Sizes

Name Product

Number Capacity Basis

Weight Size Range

MP Tray N/A 100 sheets 17 to 28 pounds

(64 to 105 g/m2) Maximum 11.7 x 17.7 in.

(297 x 450 mm)

Minimum 3.9 x 5.8 in.

(100 x 148 mm)

Standard sizes: A3, A4,

B/Ledger, B4, B5, Letter,

Legal, Executive

Paper Output Bin N/A 250 sheets 17 to 28 pounds

(64 to 105 g/m2) N/A

Standard Cassettes

Letter/A4 C3160A 250 Sheets 17 to 28 pounds

(64 to 105 g/m2) Selectable between letter

and A4

11X17/A3 C3161A 250 Sheets 17 to 28 pounds

(64 to 105 g/m2) Selectable between ledger

and A3

Optional Cassettes

Legal C3162A 250 Sheets 17 to 28 pounds

(64 to 105 g/m2) Legal only

B4 C3163A 250 Sheets 17 to 28 pounds

(64 to 105 g/m2) JIS B4 only

B5 C3164A 250 Sheets 17 to 28 pounds

(64 to 105 g/m2) JIS B5 only

Lower Cassette C3760A 500 Sheets 17 to 28 pounds

(64 to 105 g/m2) Adjustable for letter, legal,

ledger, A4, A3, and JIS B4

Table 1-2 Paper Capacities and Sizes

1-4 Product Information

Identification

Model and Serial Numbers

The model number and serial numbers are listed on identification labels

located on the rear of the printer. The model number is alphanumeric, such

as C3141A for the HP LaserJet 4V printer.

The serial number contains information about the Country of Origin, the

Revision Level, the Production Code, and production number of the printer.

The rear labels also contain power rating and regulatory information as

shown in Figure 1-1.

Sample Model and Serial Number Labels

FCC ID: B94C3141A

HEWLETT-PACKARD

11311 CHINDEN BLVD.

BOISE, IDAHO 83714 U.S.A.

C3141A

XXXXXXXX

Made in Japan

C3141A

RS5-8402

MANUFACTURED:

SERIAL NO.:

CE1

51742

LISTED

ITE

660F

POWER RATING:

100-120V 50-60 Hz, 5.7A 127V

60 Hz, 5.7A

geprüfte

Sicherheit

HEWLETT-PACKARD

11311 CHINDEN BLVD.

BOISE, IDAHO 83714 U.S.A.

C3141A

Made in Japan

RS5-8403

MANUFACTURED:

SERIAL NO.:

POWER RATING:

220-240V 50 Hz, 2.8A

CE1

C3141A

Figure 1-1

Product

Information

Product Information 1-5

Specifications

This section contains information on physical and electrical characteristics

of the printer. For information on printer site requirements (such as

operating temperature and humidity, ventilation, etc.) see Chapter 2.

Description Dimension

Width 18 in. (46 cm)

Depth 23 in. (59 cm)

Height (standard)

(with Optional Lower Cassette) 12 in. (30 cm)

17.3 in. (44 cm)

Weight (with toner cartridge) 52 lbs. (23.5 kg)

Toner cartridge weight* 70.5 oz. (2000 g) full

56.4 oz. (1600 g)

empty

* Some quantity of toner will reside in the waste toner area of a toner cartridge when the toner

supply is exhausted. Therefore, using toner cartridge weight may be an unreliable indication of

remaining toner supply.

Table 1-3 Printer Dimensions

Volts Freq Amps Watts (typical)

120 Vac ± 10%

100 Vac ± 10% 50/60 Hz ± 2 Hz

50/60 Hz ± 2 Hz

12.4 @

120v printing = 385

standby = 115

Power Save Mode = 31

220 Vac ± 10%

240Vac ± 10% 50/60 Hz ± 2 Hz

50/60 Hz ± 2 Hz

5.4 @

220v printing = 400

standby = 120

Power Save Mode = 38

*Operating current requirements.

Table 1-4 Electrical Specifications

1-6 Product Information

Operation position (per ISO 9296)

Printing LPA

dB(A) 55 db

Standby

Power Save

LPA dB(A)

38 db

33 db

Bystander 1m (per ISO 9296)

Printing LPA

dB(A) 51 db

Standby

Power Save

LPA dB(A)

34 db

29 db

Sound Power (per ISO 9296)

Printing LWAD 6.6 bels (A)

Standby

Power Save

LWAD

4.9 bels (A)

4.4 bels (A)

Table 1-5 Acoustic Emissions

Product

Information

Product Information 1-7

Media Selection Guidelines

NOTE More detailed specifications are in the HP LaserJet Printer Family Paper

Specification Guide, HP Part No. 5002-1801 (See “Related Documentation

and Training Media” later in this chapter).

Paper

To achieve the best possible print quality and avoid paper jams, follow these

guidelines for selecting paper:

•Use only copier grade paper that meets all specifications in the paper

specification guide. Avoid paper with embossed lettering, perforations, or

texture that is too smooth or too rough.

•Colored paper should be of the same high quality as white photocopy paper.

The pigments must withstand the fusing temperature of 392° F (200° C) for

0.1 second without deterioration. Do not use paper with a colored coating

that was added after the paper was produced.

•Pre-printed forms must be printed with non-flammable, heat-resistant inks

that do not melt, vaporize, or release hazardous emissions when subjected

to the fusing temperature of 392° F (200° C) for 0.1 second.

•A small sample of a new print media should be tested before purchasing

large quantities.

Envelopes

CAUTION To prevent severe printer damage, do not use envelopes having windows,

clasps, snaps, or synthetic materials.

Envelopes can be printed only from the MP Tray. Choose envelopes that

are well-constructed. They should lay flat and be sharply creased. They

should not be wrinkled, nicked, or otherwise damaged. Envelope adhesive

must be compatible with the heat and pressure of the fusing process.

1-8 Product Information

Adhesive Labels

Use the following guidelines when selecting labels:

CAUTION This printer does not support use of labels with any exposed spaces.

Previous LaserJet family printers could safely print on label stock with

exposed spaces running lengthwise down the sheet.

Do not attempt to print on label sheets after any of the labels have been

removed from the sheet. Damage to the printer may result.

•Labels must be arranged on the carrier sheet so that there are no exposed

spaces on the sheet. Using label stock with spaces between rows or columns

of labels can often result in labels peeling off during printing, causing

serious jamming and possible printer damage.

•The top sheet (printing surface) must be of copier quality and provide good

toner adhesion.

•The carrier sheet (backing sheet) must be compatible with the temperatures

and pressure of the fusing process, and must be coated for easy release of

the top sheet.

•The adhesive must be stable at the 392° F (200° C) temperatures

encountered for 0.1 second in the fusing process, and must not produce

emissions that exceed exposure levels or threshold limits established by

OSHA and other safety agencies. Adhesives must not come into direct

contact with any part of the printer.

NOTE The MP Tray is recommended for printing adhesive labels.

A wide selection of suitable labels is available through Hewlett-Packard. A

list of available sizes is located in the HP LaserJet Printer Family Paper

Specification Guide, HP Part No. 5002-1801.

Transparencies

Overhead transparencies used in HP LaserJet printers must be able to

withstand the 392° F (200° C) temperatures encountered in the printer’s

fusing process for 0.1 second. Suitable transparency film is available

through Hewlett-Packard. Refer to the HP LaserJet Printer Family Paper

Specification Guide, HP Part No. 5002-1801 for details.

NOTE The MP Tray is recommended for printing transparencies.

Product

Information

Product Information 1-9

Storing Print Media

Follow these guidelines when stacking and storing print media:

•Store paper in its ream wrapper until ready to use.

•DO NOT store cartons or reams directly on the floor where they will absorb

a higher moisture content. Instead, place cartons on a pallet or on shelves.

•DO NOT store individual reams in a manner that causes them to curl or

warp along the edges.

•Re-wrap partially used packages of media before storing.

•DO NOT stack more than six cartons on top of each other.

•Stack each carton upright and squarely on top of the one underneath.

•DO NOT place anything on top of media, regardless of whether the paper is

packaged or unpackaged.

•Store envelopes in a protective box to avoid damaging the envelope edges.

•Keep stored media away from temperature and humidity extremes.

•DO NOT store printed documents in vinyl folders (which may contain

plasticizers) or expose the documents to petroleum based solvents.

Shipping Print Media

When shipping print media through different environments, plastic wrap all

cartons on the shipping pallet. When shipping media across bodies of

water, wrap individual cartons as well. Packaging must protect the media

from physical damage.

1-10 Product Information

Product Overview

External Assembly Locations (1 of 2)

1Front Cover

2Control Panel

3Output Bin

4Adjustable Paper Stop

5250 sheet ledger (11x17) or A3 Paper Cassette

6ON/OFF Switch

7250 sheet Letter or A4 Paper Cassette

8Front Cover Release Button

9Multipurpose (MP) Tray

10 MP Tray Extension

11 MP Tray Paper Width Guides

12 Fuser Door

32 45

Figure 1-2 Front and Right Side View with MP Tray Open

Product

Information

Product Information 1-11

External Assembly Locations (2 of 2)

1Optional 42.8 Mbyte Disk Accessory Location

2Parallel Bi-Tronics Interface

3SIMM Slots

4Multiple I/O (MIO) slot

5Power Supply Connector

6Dust Cover for 250 sheet ledger (11x17) or A3 Paper Cassette

7Serial Number Plate

8Optional Universal Lower Cassette Connector Access

5678

3 4

Figure 1-3 Rear and Left Side View

1-12 Product Information

Front Door Assemblies

1Print Density Dial

2Arrow guide for installing toner cartridge in printer

3Toner cartridge cavity

4Fusing Assembly

5Registration Roller

6Transfer Roller

7Multipurpose (MP) Tray

1ASYDOOR

Figure 1-4 Front View with Front Cover Open (with toner cartridge removed)

Product

Information

Product Information 1-13

Internal Assembly Locations (1 of 2)

1Card Cage Assembly

2Main Motor

3Power Supply Unit

4Fusing Assembly Cable

5Main Drive Assembly

6Cassette Pickup Roller Clutch

7Registration Roller Clutch

8Front Door

9Cassette Pickup Roller (under plate)

10 Exhaust Fan (FM1)

11 Delivery Assembly

Figure 1-5I

1-14 Product Information

Internal Assembly Locations (2 of 2)

1Output Bin

2Delivery Assembly

3Fusing Rollers

4Transfer Roller

5Standard Paper Cassette

6Optional Lower Paper Cassette

7Cassette Pickup Roller

8Toner Cartridge

1ASSYSEC

Figure 1-6

Product

Information

Product Information 1-15

Service Approach

Repair of the printer normally begins with use of the printer’s internal

diagnostics in conjunction with the troubleshooting procedures in Chapter 7.

Once a faulty part is located, repair is generally accomplished by assembly

level replacement of Field Replaceable Units (FRUs). Some mechanical

assemblies may be repaired at the subassembly level. PCA component

replacement is not supported by Hewlett-Packard.

Ordering Parts

Field replaceable part numbers are found in Chapter 8 of this manual.

Replacement parts may be ordered from HP’s Service Materials

Organization (SMO), or Support Materials Europe (SME).

Phone numbers for the various sources are:

•SMO (Service Materials Organization)

1-800-227-8164 (U.S. only)

•SME (Support Materials Europe)

(49 7031) 142253

•HP’s Distribution Center (HPD)

1-303-353-7650

Exchange Program

HP offers remanufactured assemblies for some parts. These are identified

in Chapter 8 and can be ordered through Parts Direct Ordering (PDO), or

Support Materials Europe (SME).

Consumables

The printer has no consumables other than the toner cartridge, which may

be ordered directly from Hewlett-Packard. Refer to Chapter 8 for ordering

information.

1-16 Product Information

Toner Cartridge Life

The toner cartridge (C3900A) is designed to simplify replacement of the

major “consumable” parts. The toner cartridge contains the printing

mechanism and a supply of toner.

At 5% page coverage, a toner cartridge will print approximately 7500 pages

(see Figure 1-7).

Sample 5% Page Coverage

When regularly printing pages with less coverage, such as short memos, a

toner cartridge should print more than 7500 pages. However, the cartridge

may print less than 7500 pages if routinely printing very dense print.

NOTE For best results, always use a toner cartridge before the expiration date

stamped on the toner cartridge box.

Figure 1-7

Product

Information

Product Information 1-17

Refilled Toner Cartridges

While Hewlett-Packard does not prohibit the use of refilled toner cartridges

during the warranty period or while under a maintenance contract, their

use is not recommended for the following reasons:

•Repairs resulting from the use of refilled toner cartridges are not covered

under the Hewlett-Packard warranty or maintenance contract.

•Hewlett-Packard has no control or process to ensure that a refilled toner

cartridge functions at the high level of reliability of a new HP LaserJet

toner cartridge. Hewlett-Packard also cannot predict what the long term

reliability effect on the printer is from using different toner formulations

found in refilled cartridges.

•The print quality of HP LaserJet toner cartridges influences the customer’s

perception of the printer. Hewlett-Packard has no control over the actual

print quality of a refilled toner cartridge.

Recycling Toner Cartridges

In order to reduce waste, Hewlett-Packard utilizes a recycling program for

used toner cartridges. Cartridge components that do not wear out are

recycled. Plastics and other materials are recycled. Hewlett-Packard pays

the shipping costs from the user to the recycling plant. For each cartridge

returned, HP donates one U.S. dollar to be shared by the Nature

Conservancy and the National Wildlife Federation. To join this recycling

effort, follow the instructions inside the toner cartridge box.

1-18 Product Information

Related Documentation and Training Media

Table 1-6 lists where to order related documentation. See “Ordering Parts”

earlier in this chapter.

Description Part Number SMO SME HPD

HP LaserJet Family Quick Reference

Service Guide

5961-0531 X X

HP LaserJet 4V and 4MV Printers

User’s Manual

C3141-90901 X X

HP PCL5 Printer Language Technical

Reference Information Package

5961-0601 X X

HP LaserJet Printer Family Paper

Specifications Guide

5002-1801 X

Introduction to Network Printing,

Book 5961-0649 X X

Network Printing for the Enterprise,

Video 5961-0650 X X

LaserJet Basic Hardware Training Course

5961-0880 X X

Solutions Connectivity Guide

(Available from LDC 1-800-544-9976) 5962-8536E

Specific Application Drivers

1 Shipped with printer. (English version part number is shown. Other translations are available

see your local HP Sales Office.)

Table 1-6 Related Documentation

Product

Information

Product Information 1-19

Technical Assistance

HP ASAP (Automated Support Access Program) provides free technical

support information 24 hours a day, 7 days a week. The ASAP system

includes HP AUDIO-TIPS and HP FIRST, both explained below. The ASAP

service requires a touchtone phone.

HP AUDIO-TIPS

HP AUDIO-TIPS is an interactive voice response system providing

prerecorded answers to the most frequently asked questions by HP LaserJet

printer users. Helpful “System Maps” to the HP AUDIO-TIPS recordings

are available by fax through HP FIRST.

HP FIRST

HP FIRST (Fax Information Retrieval Support Technology) is a phone-in

fax service providing technical information for HP LaserJet users as well as

service personnel. Receiving a fax requires a group 3 facsimile machine or

fax card. Service related information includes:

•Service notes (HP Authorized dealers)

•Application notes

•Product Data Sheets

•Material Safety Data Sheets (MSDS)

•Typeface and accessory information

•Printer support software information

•Toner information

•Driver request form and Software Matrix.

HP FIRST, U.S.

Call the HP ASAP system (1-800-333-1917) and follow the voice prompts to

enter HP FIRST.

HP FIRST, Europe

Call HP FIRST at one of the following numbers:

U.K., 0800-96-02-71 Netherlands, 06-0222420

Belgium (Dutch), 078-111906 Germany, 0130-810061

Switzerland (German), 155-1527 Austria, 0660-8128

For English service outside the above countries, (31) 20-681-5792.

1-20 Product Information

HP CompuServe Forum

CompuServe members can download a variety of support materials

including product data sheets, software application notes, and printer

drivers for many popular software applications. Members may also post and

reply to questions in an interactive format. To access the HP Forum, type

GO HP at any prompt. For more information, or to join CompuServe, call

1-800-524-3388.

North American Response Center (NARC)

The North American Response Center (NARC) is available for technical

support to assist service technicians. The NARC can be reached at

1-800-544-9976 between 7:00 A.M. and 6:00 P.M. Mountain Standard Time,

Monday, Tuesday, Thursday and Friday. On Wednesdays the office closes

at 4:00 P.M.

Other Areas

Outside of North America and Europe, contact your local HP sales office for

assistance in obtaining technical support.

Product

Information

Product Information 1-21

Warranty Statement

Warranty

This warranty gives specific legal rights. There may also be other rights

which vary from area to area. Refer to Appendix E in the User’s Manual for

further warranty information.

One Year Return to HP Authorized Repair Station

Hewlett-Packard warrants the LaserJet 4V/4MV printer against defects in

materials and workmanship for a period of one year from receipt by the

customer. During the warranty period, HP will, at its option, either repair

or replace products which prove to be defective.

NOTE User maintenance components are not covered under the

HP LaserJet 4V/4MV printer factory warranty. A separate maintenance

agreement may be written to cover these components.

Exclusions

The warranty on printers shall not apply to defects resulting from:

•Improper or inadequate maintenance by customer.

•Customer supplied software or interfacing.

•Unauthorized modification or misuse.

•Operation outside of the environmental specifications for the product.

•Operation of non-supported printing media.

•Duty cycle abuse maximum (printing more than the equivalent of 35,000

single-sided pages per month).

•Operating the printer from a mechanical switchbox without a designated

surge protector.

•Improper site preparation and maintenance.

•Use of non-HP toner cartridges (see the following explanation), SIMM

memory boards, or interface boards.

The use of non-Hewlett-Packard toner cartridges does not affect either the

warranty or any maintenance contract purchased from HP. However, if an

HP LaserJet printer failure or if printer damage is found to be directly

attributable to the use of any non-HP product, the repair will not be covered

under the warranty or HP maintenance contract. Hewlett-Packard cannot

recommend use of non-HP cartridges, either new or remanufactured,

because they are not HP products and HP cannot influence or control their

quality.

1-22 Product Information

Site Requirements

Chapter Contents

Operating Environment . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Space Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Environmental Requirements . . . . . . . . . . . . . . . . . . . . . . . 2-4

Site Requirements 2-1

2-2 Site Requirements

Operating Environment

The environmental specifications (listed in the “Specifications” section of

Chapter 1) must be maintained to ensure the proper operation of this

printer. Consider the following points before installing the printer:

•Install in a well-ventilated, dust-free area.

•Install on a hard, flat and continuous surface, with all four printer feet

level. Do not install on carpet or other soft surfaces.

•Ensure adequate power is supplied. Printer power requirements are listed

under “Specifications,” in Chapter 1.

•Install where there is stable temperature and humidity, away from water

sources, humidifiers, air conditioners, refrigerators, or other major

appliances.

•Install away from direct sunlight, open flames, or ammonia fumes. If the

printer is placed near a window, make sure the window has a curtain or

blind to block any direct sunlight.

•Install with enough space around the printer for proper access and

ventilation (see Figure 2-1).

•Install printer away from the direct flow of exhaust from air ventilation

systems.

Site

Requirements

Site Requirements 2-3

Space Requirements

Environmental Requirements

Keep the printer within the following environmental conditions for optimum

performance.

3.94 in (100mm)

3.35 in (85mm)

49.2 in (1250mm)

25.35 in (644mm)

3.54 in

(90mm)

13.38 in

(340mm)

17.3 in

(440mm)

Optional Lower Cassette

Figure 2-1 Printer Space Requirements

Item Operating Storage

Temperature 10° to 32.5° C

(50° to 90.5° F) 0° to 40° C

(32° to 105° F)

Humidity 20 to 80% RH

(with no condensation) 10 to 95% RH

(with no condensation)

Table 2-1 Printer and Toner Cartridge Environmental Conditions

2-4 Site Requirements

Operating Overview

Chapter Contents

Using the Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Control Panel Layout . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Indicator Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Control Panel Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Settings and Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Setting the Display Language . . . . . . . . . . . . . . . . . . . . . . 3-6

Control Panel Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Printing Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

PCL Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Job Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

Configuration Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

Memory Configuration Menu . . . . . . . . . . . . . . . . . . . . . . 3-12

Parallel Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13

Test Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14

Service Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15

Power Save . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15

Setting the Page Count and Serial Number . . . . . . . . . . . . . . 3-17

Setting the Cold Reset Default Paper Size . . . . . . . . . . . . . . . 3-18

Other Service Mode Items . . . . . . . . . . . . . . . . . . . . . . . . 3-18

Testing the Printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19

Printing a Self Test Page . . . . . . . . . . . . . . . . . . . . . . . . 3-19

Understanding the Self Test Printout . . . . . . . . . . . . . . . . . . 3-20

Self Test Printout Key . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20

Engine Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22

Resetting the Printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23

Simple Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23

Cold Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23

Menu of Resets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-24

Operating Overview 3-1

3-2 Operating Overview

Using the Control Panel

Control Panel Layout

The control panel consists of a 16-character display panel, three indicator

lights, and eight keys, three of which have alternate functions.

Control Panel Layout

On Line Form Feed MP Paper Size Enter

Menu Item

Shift Reset Continue

Ready

Figure 3-1

Operating

Overview

Operating Overview 3-3

Indicator Lights

The control panel indicator lights are described in the following table. The

column labeled “Do this:” includes an action only when an action is

required.

Control Panel Keys

You must take the printer off line to use control panel keys, except for the

MP Paper Size and keys related to its operation.

Each key in the top row has a single function. Three keys in the bottom row

have more than one function. The primary function name of each key

appears above the key. The alternate function name of each key appears

below the key. These alternate function names are color-coded to match the

[Shift] key, which you must hold down while selecting an alternate function.

You can rapidly scroll through some selections by holding down the [+/-] key.

When this

indicator: Looks like this: It means this: Do this:

Ready On

Flashing

Off

Ready to print.

Print job in progress.

Not ready to print.

Let job finish printing.

See display panel message.

On Line On

Flashing

Off

Ready to receive data.

Going off line.

Printer is off line. Access other keys or press [On Line]

to place printer back on line.

Form Feed On

Flashing

Off

Data still in print buffer.

Buffered data is

printing.

No buffered data in

printer.

Take printer off line; press

[Form]Feed]; press [On Line] to place

printer back on line.

Table 3-1 Indicator Lights

3-4 Operating Overview

Key Explanation

[On Line] Switches the state of communication between computer and printer either on

(on line) or off (off line). For the printer to receive data, both the On Line and

Ready indicator lights must be lit.

[Form Feed] Prints any data remaining in the page buffer. Does not send a blank sheet of

paper through the printer.

[MP Paper Size] Only active when MP Tray is set to cassette (select MP TRAY=CASS in the

Configuration Menu). Selects size of paper loaded in MP Tray. Pressing [Enter]

saves your selection.

[Enter] Saves a selected control panel key setting. An asterisk (*) appears next to the

saved selection, indicating that it is now the default. Default settings remain in

place when the printer is reset or switched OFF.

[Shift] Accesses color coded alternate functions of bottom-row control panel keys.

Hold down while pressing an associated key.

[Menu] Cycles through menus, returning to 00 OFFLINE at the end of the cycle unless a

problem is encountered. When an option is added to the printer (PostScript, for

example), a menu for that option appears in the sequence (see “Control Panel

Menus” in this chapter).

Reset

[Shift] + [Reset]

Resets the printer (displays 07 RESET). Clears the page and active I/O buffers

and makes the current control panel values the defaults (see “Menu of Resets”

at the end of this chapter).

[Item] Cycles through the selected menu items. Menu items vary depending on

options installed and configuration of other menu choices.

Continue

[Shift] + [Continue]

Allows the printer to resume printing after a printer message (such as

20 MEM 0VERFLOW) has placed it off line. Clears most printer messages (such

as manual feed requests) and places the printer back on line.

[+] or [-] Press [+] to step through menu items. Hold down [+] to scroll through items.

Press or hold down [Shift] + [-] to move through items in reverse order.

Table 3-2 Control Panel Keys

Operating

Overview

Operating Overview 3-5

Settings and Defaults

The printer makes most printing decisions based on either temporary

settings or permanent defaults.

NOTE Settings you send from software applications override printer defaults.

Setting the Display Language

1Press and hold [Enter] while powering on. Hold [Enter] until CONFIG

LANGUAGE appears.

2Release [Enter]. 05 SELF TEST appears briefly. Wait for LANG=ENGLISH to

appear.

3Click [+] repeatedly until the desired language appears.

4Click [Enter] to save your choice. An asterisk (*) will appear beside your

language selection.

Setting or Default Explanation

Temporary setting A value set for the current print job by your software

application. For example, a request from your

software to print three copies instead of the control

panel default value of one copy is a temporary

setting. The printer continues to use the temporary

setting until you send another software request or

reset the printer.

Control panel default A value you set at the control panel by selecting a

menu item, then pressing [Enter]. An asterisk

appears following the item name to indicate that it is

now the default. The printer retains this default

when it is switched off.

Factory default The value set for each menu item at the factory.

Factory defaults are marked with an asterisk in the

menu tables on the pages that follow.

Table 3-3 Settings and Defaults

3-6 Operating Overview

Control Panel Menus

Pressing [Menu] gives you access to the menus, one after another. Each

menu is described in a separate table in this section. When options (such as

the PostScript language) are installed in the printer, new menus or menu

items automatically are added in the appropriate menus.

To select a menu item:

1Press [On Line] to take the printer off line.

2Press [Menu] repeatedly until the menu you want appears.

3Press [Item] repeatedly until the item you want appears.

4Press [+] repeatedly (or hold down [+] to scroll) until the setting you want

appears.

5Press [Enter] to save your selection. An asterisk appears next to your

selection, indicating that it is now the default.

6Press [On Line] to place the printer back on line.

PRINTING MENU PCL MENU PS MENU JOB MENU CONFIG MENU MEM CONFIG

MENU* PARALLEL MENU TEST MENU

COPIES FONT SOURCE PRT PS ERRS RESOLUTION MP TRAY IO BUFFER HIGH SPEED SELF TEST

PAPER FONT NUMBER JAM RECOVER PERSONALITY LOCK** IO SIZE ADV FNCTNS CONT SELF TEST

ORIENTATION PITCH or

PT SIZE PWR SAVE CLR WARN RESRCSAVE PCL TYPEFACE

LIST

FORM SYM SET IO TIMEOUT AUTO CONT PCL MEM PCL DEMO PAGE

MANUAL FEED LOW TONER PS MEM PS CONFIG PAGE

RET PS TYPEFACE

LIST

ECONOMODE PS DEMO PAGE

You can change these menu items either from a software

application or from the control panel. You can change these menu items only from the control panel.

Shaded items appear when the PostScript option is installed.

Additional menu items may appear if options are installed (such as MIO cards).

* These items will appear if sufficient memory is available.

** The Lock function is only available if MP Tray = Cassette.

Table 3-4 Control Panel Menu Map

Operating

Overview

Operating Overview 3-7

Printing Menu

You can override or change any Printing Menu setting through most

software applications. When you change a setting from the printer control

panel, the new setting becomes the printer default value.

Item Options Explanation

COPIES 1* to 999 Select any number from 1 to 999.

PAPER

LETTER**, LEGAL, A4***,

EXEC, 11x17, A3, JIS B4,

JIS B5, CUSTOM, COM10,

MONARCH, C5, DL, B5,

JPOST, JPOSTD

Sets default image size at which printer formats page

unless a software setting overrides it.

ORIENTATION P*, LP means portrait

FORM 5 to 128 LINES

(60** and 64***) Sets vertical spacing, from 5 to 128 lines, for default

paper size. Scrolls in increments of 1 line.

MANUAL FEED OFF*, ON Available only through MP Tray. When Manual Feed is

on and the MP Tray is empty, the printer goes off line

when it receives a print job and displays MF FEED

paper size

or ME FEED

envelope size

. When you place

a sheet in the MP Tray, the printer goes back on line

and prints the sheet.

RET OFF, LIGHT, MEDIUM*, DARK Refines print quality by smoothing the fine gradations

along the angles and curves of the printed image.

ECONOMODE OFF*, ON EconoMode substantially reduces the amount of toner

on the printed page; the result is similar to draft mode

on some dot matrix printers.

*Factory default. **Factory default for 110V printers. ***Factory default for 220V printers.

Table 3-5 Printing Menu Items

3-8 Operating Overview

PCL Menu

PCL Menu items allow you to choose the printer default font and symbol

set. Printer Control Language (PCL) is HP printer language. You can also

change such PCL Menu items as the FONT SOURCE through your software

application.

Item Options Explanation

FONT SOURCE I*

Internal fonts*

Permanent soft fonts

SIMM Module: n=slot number. Typefaces stored in one of the four

ROM SIMM slots (M1=slot 1, for example).

FONT NUMBER 0 to 999 The printer assigns a number to each typeface and lists them on the

PCL Typeface List, accessed under the Test Menu (see Table 3-4 ).

The font number appears in the Font # column of the printout.

You must select a FONT SOURCE in order for FONT NUMBER to appear.

Defaults and other conditions are as follows:

0* is the default.

1* is the default. You can select from the control panel

only a permanent soft font that is currently in the printer.

SIMM Module; n=SIMM slot (1-4). Typefaces stored in

one of the four ROM SIMM slots (M1=slot 1, for example).

PITCH

PT. SIZE

Range

Pitch:

10.00*

Point:

12.00*

The pitch or point size item available depends on the FONT SOURCE

and FONT NUMBER you select.

Pitch:

Point:

For fixed-pitch outline typefaces, select pitch sizes from

.44 to 99.99.

For proportionally-spaced outline typefaces, select point

sizes from 4.00 to 999.75 in .25-point increments.

SYM SET ROMAN-8*

Many others A symbol set is a unique grouping of all the characters in a font.

PC-8 or PC-850 is recommended for line draw characters. Symbol

set charts appear in the

PCL 5 Technical Reference Manual

*Factory default.

Table 3-6 PCL Menu Items

Operating

Overview

Operating Overview 3-9

Job Menu

The items available in the Job Menu can also be changed through software

applications if an appropriate printer driver is installed.

Item Options Explanation

RESOLUTION 300 or 600* For most purposes, 600 dpi is recommended.

PERSONALTY AUTO*

PCL

Personality

means printer language. The printer can switch

from its standard personality, PCL, to other personalities,

such as PostScript. When PERSONALTY is set to AUTO, the

printer analyzes each print job it receives and switches

personalities automatically.

When you make another personality the default, the printer

stops switching personalities automatically unless a software

command specifically instructs it to do so. If the PostScript

option is not installed, PERSONALTY will not display in the Job

Menu.

If you select PS as the default, you may want to set

ADV FNCTNS in the Parallel Menu to OFF.

PWRSAVE OFF, 15 MIN,

30 MIN*, 1 HR,

2 HRS, 3 HRS

Sets the amount of time the printer is idle before the fuser

shuts down. The printer automatically starts warming the

fuser when you send a print job to the printer, press a control

panel key, load or remove paper, or open the top door.

NOTE: A ten second interval is also available in Service Mode

(see “Service Mode” later in this chapter).

IO TIMEOUT 5 to 300

15* I/O timeout refers to the time, measured in seconds, that the

printer waits before ending an incomplete print job (it scrolls in

increments of 10). This setting allows you to adjust timeout for

best performance. If data from other ports appears in the

middle of the print job, increase the timeout value.

PAGEPROTCT AUTO*

ON You will not see this item unless the error 21 PRINT OVERRUN

has occurred. (See Chapter 7 for error message

troubleshooting.)

*Factory default.

Table 3-7 Job Menu Items

3-10 Operating Overview

Configuration Menu

Configuration Menu items cannot be changed from software applications.

Item Options Explanation

MP TRAY FIRST* Draws paper from the MP Tray regardless of paper size

(this setting not recommended for shared environments).

CASS The MP Tray operates as a paper cassette. Paper feeds

automatically. Paper size must be selected with the

[MP[Paper]Size] key because the MP Tray cannot sense the size

of the paper. The [MP [Paper] Size] key works only when the MP

Tray is set to CASS.

MANUAL Operates only as a manual feed tray.

LOCK NONE*

and combinations

Locks out a tray or a combination of trays so the printer will not

draw paper. Lock-out options depend on how the MP Tray is

configured and whether an optional 500-sheet Lower Cassette

(LC) is installed. When the MP Tray = MANUAL or FIRST or no

optional Lower Cassette is installed, no paper sources are

available to be locked out. All possible options are:

NONE

PC MP

LC MP

LC PC

No trays or cassettes locked out.

The MP Tray is locked out.

The Paper Cassette is locked out.

The optional Lower Cassette is locked out.

Only the optional Lower Cassette is available.

Only the Paper Cassette is available.

Only the MP Tray is available.

CLR WARN ON* Clearable warnings are displayed until acknowledged by

pressing [Continue].

JOB Clearable warnings are displayed from the time they are

detected until the start of the next job.

AUTO CONT ON* When an error message is displayed, printer goes offline for ten

seconds, then returns to on-line state.

OFF When an error message is displayed, printer goes offline and

remains offline until operator presses [Continue].

LOW TONER CONT* Printer remains on-line and continues to print on encountering

a 16 TONER LOW message.

STOP Printer stops and goes offline until operator changes the toner

cartridge, presses [On Line], or [Continue].

*Factory default.

Table 3-8 Configuration Menu Items

Operating

Overview

Operating Overview 3-11

Memory Configuration Menu

This menu contains the items for personality Resource Saving and I/O

Buffering. Depending on how the printer memory is configured, any

combination of menu items and possible values can appear. When you

change an item in this menu, the printer automatically resets, and all fonts,

macros and downloaded data in the printer are lost (except data stored on

the optional Disk Accessory). Memory Configuration Menu items can be

selected only from the printer control panel.

Item Options Explanation

IO BUFFER AUTO*

OFF**

The I/O buffer is a portion of the printer memory set aside

to hold incoming data. When this item is set to AUTO, the

memory set aside for I/O buffering is automatically

determined by the printer based on available memory.

When it is set to ON, the size can be manually adjusted.

When it is set to OFF, no memory is set aside.

IO SIZE 10K and up When IO BUFFER is set to ON, I/O SIZE appears in the

menu. Use this item to add or reduce I/O buffer memory in

increments of 10 KBytes up to 100 KBytes, then in

100 KByte increments.

RESRCSAVE AUTO*

OFF**

This item appears when a certain amount of memory and

a personality SIMM are installed in the printer. If it is set to

AUTO, the printer automatically determines the amount of

memory to allocate to installed personalities (languages).

When it is set to ON, additional memory management item

selections appear for each installed personality (see next

item). When it is set to OFF, no memory is allocated and

personality-dependent resources (such as fonts) are lost

when personality changes.

PCL MEM

PS MEM 0 KBytes and up When Resource Saving is set to ON, each installed

personality (for example, PCL and PostScript) is added as

a menu item. You can increase memory in increments of

100 KBytes up to the maximum.

*Factory default.

**The HP LaserJet 4MV printer is set to OFF at the factory.

Table 3-9 Memory Configuration Items

3-12 Operating Overview

Parallel Menu

Parallel Menu items can be selected only from the printer control panel. You

cannot change or override them from your software application.

Item Options Explanation

HIGH SPEED YES*

The speed at which data is transmitted to the printer. YES sets

the Bi-Tronics parallel interface to run at a higher data rate

supported by newer computers. NO sets the Bi-Tronics parallel

interface to run at a slower speed compatible with older

computers.

ADV FNCTNS ON*

OFF

Choosing ADV FNCTNS=ON enables bi-directional parallel

communication, which allows the printer to send status readback

messages to the computer. Setting advance functions to ON may

slow personality switching.

*Factory default.

Table 3-10 Parallel Menu Items

Operating

Overview

Operating Overview 3-13

Test Menu

Test Menu items can be selected only from the printer control panel. You

cannot change or override them from your software application. See

“Testing the Printer” later in this chapter for detailed information about

running printer tests and interpreting their results.

Item Explanation

SELF TEST When SELF TEST is displayed, and you press [Enter], the printer

runs a self test during which it displays the message 05 SELF

TEST and all control panel lights are lit. During the printing portion

of the self test, the message 06 PRINTING TEST is displayed.

CONT SELF TEST

(Continuous Self Test) Prints continuous self-test pages until you press [On Line] or

[Shift] + [Continue]. Then the 04 portion of the display blinks and

several more pages print until the buffer clears. Press [On Line]

when pages stop printing.

PCL TYPE LIST

PS TYPE LIST Prints a list of the typefaces and bitmapped fonts currently

available in the printer (both internal and accessory) for PCL or

Adobe PostScript print jobs.

PCL DEMO PAGE

PS DEMO PAGE Prints a page that illustrates printer features (PCL or Adobe

PostScript).

PS CONFIG PAGE Prints PostScript-specific information, including current settings,

printable area, and memory configuration.

Table 3-11 Test Menu Items

3-14 Operating Overview

Service Mode

The Service Mode should be used only by authorized service personnel.

While in Service Mode, you can:

•Print a Service Mode Self Test.

•Verify and set the Page Count and serial number. These are displayed on

the standard self test.

•Set the Cold Reset Default. (This sets the factory default paper size to either

Letter or A4).

•Set the Demo Page=True/False. Used to remove the Demo Page option from

the self test menu.

•Set the Diagnostic Functions ON or OFF (for software developers use only).

The following procedure is used to initiate the Service Mode (refer to Figure

3-2).

1Hold down the [On Line], [Form Feed], and [Enter] keys while powering ON

the printer, until all lights are illuminated and the Display Window is

blank. (If the Display Window reads 05 SELF TEST at this point, the keys

were released too soon. Repeat this step until successful.)

2Press the [Form Feed] key, then the [Enter] key. The message SERVICE MODE

is displayed briefly, then the printer automatically begins a 05 SELF TEST.

After several seconds, both Control Panel Indicators turn OFF. (The printer

may display 02 WARMING UP if it has not warmed up completely.) After the

printer has warmed up and passed the self test, SERVICE MODE is displayed.

To exit the Service Mode press the [On Line] key.

Power Save

An additional 10 second time interval is added to the Power Save function

in Service Mode.

With Service Mode displayed, press MENU until Job Menu is displayed.

1Press [Item] until PWRSAVE= is displayed.

2Press [+/-] until the desired time interval is displayed.

3Press [Enter] to save your selection.

4Press [On Line] once to return to the Service Mode. Press [On Line] again to

place the printer back on-line.

Operating

Overview

Operating Overview 3-15

On Line Form Feed Enter

Form Feed

Enter

Item

Wait 5 seconds

3SERVMOD

Figure 3-2 Service Mode Menus

3-16 Operating Overview

Setting the Page Count and Serial Number

The page count and serial numbers are stored in Non-Volatile Memory. If it

is necessary to replace the Formatter PCA, the page count should be set to

the current value to reflect the age of the print engine. The procedure for

setting the serial number is similar to setting the page count. Use the

following procedure to set the page count:

Before removing the old Formatter PCA, print a control panel self test to

verify the current page count and serial number of the printer, if possible.

NOTE If it is not possible to print a self test, try to verify the values before

replacing the Formatter PCA by following steps 3 through 5, below.

After verifying the page count from the old Formatter PCA, replace it with

the new PCA as described in Chapter 6.

1Enter the Service Mode as previously described in this chapter.

2When SERVICE MODE is displayed, press [Menu] to access the Service Menu.

3Press [Item to step through the menu. PAGES=XXXXXX is displayed. (XXXXXX

represents the page count currently stored in Non-Volatile Memory. The

underlined character denotes the cursor position.)

4Press [Enter] to scroll the cursor to underline the desired digit.

5Press [+/-] to select the correct value.

6Press [Enter] to store the new value in NVRAM.

7Set each digit in the same manner. Press [On Line] to return the display to

SERVICE MODE. Use the procedure described above to set the serial number

in the printer memory.

8Press [On Line] a second time to exit Service Mode.

Operating

Overview

Operating Overview 3-17

Setting the Cold Reset Default Paper Size

When replacing a Formatter PCA with a default paper size setting of A4, set

the Customization Variable to A4.

To set the Customization Variable:

1Enter the Service Mode as previously described in this chapter.

2Press [Menu] to access the Service Menu.

3Press [Item to step through the menu until CR PAPER=LETTER* is displayed.

4Press [+/-] to toggle between Letter and A4 paper.

5Press [Enter] to save your selection.

6Press [On Line] to return the display to SERVICE MODE.

7Press [On Line] a second time to exit Service Mode.

Other Service Mode Items

If any of the following items need to be changed from their default settings,

the procedure is similar to that used for setting the page count or cold reset

default, described above.

Item Default Description

SKIP DEMO FALSE Inhibits printing of PCL Demo Page when set to TRUE

BIG DATA OFF For factory test purposes. Do not change.

DIAGNOSTICS OFF For factory test purposes. Do not change.

ERR LOG N/A Contains a list of the ten most recent errors with the related page count.

PRT ERR LOG N/A Prints the error log.

CLR ERR LOG N/A Clears the error log buffer.

Table 3-12 Other Service Menu Items

3-18 Operating Overview

Testing the Printer

When you run a self test, the printer checks its internal controller and I/O

interface, then prints a test page. You can review the self test printout to

verify proper installation of such options as paper cassettes or personalities.

Printing a Self Test Page

1Press [On Line] to take the printer off line.

2Press [Menu] until TEST MENU appears.

3Press [Item] until the test you want to print appears.

4Press [Enter] to print the test.

5Press [On Line] to place the printer back on line.

NOTE When you select CONT SELF TEST, the printer prints self test pages

continuously until you press [Shift] + [Continue] or [On Line].

Operating

Overview

Operating Overview 3-19

Understanding the Self Test Printout

Figure 3-3 is a sample self test printout (run from Service Mode). Numbers

in the sample printout match numbers in the key to the printout below.

The appearance of the self test printout varies depending on the options

currently installed in the printer.

Self Test Printout Key

1Menu selections: Lists selections in the order in which they appear in the

control panel display. Also includes options such as PostScript and Modular

I/Os.

2MIO information: Reserved for MIO and network statistics. For some

installed MIO options, this block of information can be as long as 20 lines

and three columns.

3Serial Number and Formatter Number: Shows version number of internal

code

4RAM size: Shows total installed printer memory.

5Page Count: Shows the number of pages the printer has printed.

6Firmware Datecode: Eight-digit date (YYYYMMDD) and version number of

formatter firmware.

7Control Panel options status: Shows status of control panel Lock and

Password functions.

8Other installed options: Lists optional paper cassettes, personalities, and

other installed options.

9Disk Accessory: Appears when the option is installed and displays access

status.

10 I/O Buffering and Resource Saving: Information about the current

configuration appears here. If the printer does not have enough memory

installed to enable I/O Buffering or Resource Saving, the amount of

additional memory needed appears here.

11 Print Pattern: Illustrates print density and quality.

12 Resolution Enhancement: When print resolution is set to 600 dpi, the REt

block appears here. The REt block illustrates current print resolution

enhancement.

13 PCL Memory Information: Shows the total amount of installed memory, and

also indicates the amount available for PCL applications (such as font

downloading software).

3-20 Operating Overview

C3295A

3SELFTST

Figure 3-3 Self Test Printout (printed in Service Mode)

Operating

Overview

Operating Overview 3-21

Engine Test

The engine test print can be used to verify that the print engine is

functioning correctly. The Formatter PCA is completely bypassed during an

engine test.

To print an engine test, use a non-metallic object to press the engine test

button (see Figure 3-4). A single test page is printed.

Engine Test

Engine Test Printout

3ENGTEST

Figure 3-4

3-22 Operating Overview

Resetting the Printer

Simple Reset

A simple reset does the following:

•Clears the page buffer.

•Removes all temporary typefaces and macros.

•Makes the current user-selected defaults “active” (making them the default

values until you change them again).

•Purges the input buffer of the active I/O (the other I/O buffer is not affected).

To perform a simple reset:

1Press [On Line] to take the printer off line. The [On Line] light goes off and

00 OFFLINE appears on the display.

2While holding down the [Shift] key, press [Reset] briefly.

307 RESET appears on the display. Then the printer returns to the on-line,

00 READY state.

Cold Reset

Cold Reset clears all data from the printer memory and sets all the defaults

back to the factory settings.

CAUTION Performing a Cold Reset resets the JetDirect configuration. To avoid

making changes to your configuration remove the JetDirect card before

performing a cold reset.

If possible print a control panel self-test prior to performing a Cold Reset.

This will document current settings for later reference.

Operating

Overview

Operating Overview 3-23

To perform a cold reset:

1Turn off the printer.

2While holding the [On Line] key down, turn the printer on. 08 COLD RESET

appears briefly on the display, then 05 SELF TEST appears. After about 30

seconds, 08 COLD RESET reappears on the display, followed by 00 OFFLINE.

The cold reset is complete.

3Press [On Line] to return the printer on line. 00 READY appears on the

display.

Menu of Resets

Additional reset options are available through the Menu of Resets. Use the

Menu of Resets option with caution. It can result in loss of buffered page

data or printer configuration data. You should only use it when:

•You wish to restore the default printer settings.

•Communication between the printer and computer is interrupted.

•You are using both the parallel I/O and MIO ports, and one of the ports is

having problems.

To access the Menu of Resets:

1Press [On Line] to take the printer off line.

2Hold down both [Shift] and [Reset] for at least 10 seconds until RESET=MENU

appears on the display.

3Use [+] or [-] to cycle through the items.

4Press [Enter] to select your choice of resets. An asterisk * appears by the

reset option.

5Press [On Line] to execute the reset.

The following table shows the three reset options.

Option Selected Printer Response Explanation

RESET=MENU 09 MENU RESET RESET=MENU performs a simple reset (see previous

page) and restores most of the printer factory default

settings. Items in the Config, Memory Configuration

and Parallel Menus are not reset.

RESET=ACTIVE I/O 09 RST ACTIVE I/O RESET=ACTIVE I/O clears the input and output buffers

for the active I/O only

and performs a simple reset.

RESET=ALL I/O 09 RESET ALL I/O RESET=ALL I/O clears the input and output buffers

for

all I/Os

and performs a simple reset.

Table 3-13 Menu of Resets

3-24 Operating Overview

Maintenance

NOTE This printer requires no regular maintenance except for routine cleaning

procedures, described in this chapter.

Chapter Contents

Cleaning the Printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Cleaning Spilled Toner . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Maintenance 4-1

4-2 Maintenance

Cleaning the Printer

To maintain the print quality, thoroughly clean the printer:

•Every time you change the toner cartridge.

•After printing approximately 7,500 pages.

•Whenever print quality problems occur.

Clean the outside of the printer with a lightly water-dampened cloth. Clean

the inside with only a dry, lint-free cloth. Observe the warnings and

cautions below.

WARNING! Before you begin these steps, turn the printer OFF and unplug the power

cord to avoid shock hazard.

When cleaning around the front door area, avoid touching the fuser. It may

be HOT.

CAUTION To avoid permanent damage to the toner cartridge, do not use

ammonia-based cleaners on or around the printer.

Do not touch the transfer roller with your fingers. Contaminants on the

roller can cause print quality problems.

Maintenance

Maintenance 4-3

Cleaning Spilled Toner

Defective toner cartridges can develop leaks. In addition, after a paper jam

has occurred, there may be some toner remaining on the rollers and guides

inside the printer. The pages that print immediately after the jam may pick

up this toner.

Clean spilled toner with a cloth slightly dampened in cold water. Do not

touch the Transfer Roller with the damp cloth or with your fingers. Do not

use a vacuum cleaner unless it is equipped with a micro-fine particle filter.

NOTE If toner gets on your clothing, use cold water to remove it. Hot water sets

toner stains into fabric.

COMPONENT CLEANING METHOD/NOTES

Outside Covers Use a water-dampened cloth. Do not use

solvents or ammonia-based cleaners.

Inside General Use a dry, lint free cloth. Remove all dust, spilled

toner, and paper particles.

Paper Pickup Rollers Use a water-dampened lint-free cloth.

Registration Roller Use a dry lint-free cloth.

Transfer Roller Use a dry, lint-free cloth. DO NOT TOUCH with

your fingers.

Anti-Static Teeth

(adjacent to Transfer Roller) Use a dry, lint-free cloth. WARNING!: The

Anti-Static Teeth are extremely sharp.

Separation Pad Use a dry lint-free cloth.

Fuser Assembly Use a water-dampened lint-free cloth.

Table 4-1

4-4 Maintenance

Functional Overview

Chapter Contents

Basic Printer Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Power Supply System . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

AC Power Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

Overcurrent/Overvoltage Protection . . . . . . . . . . . . . . . . . . 5-5

High Voltage Power Distribution . . . . . . . . . . . . . . . . . . . . 5-6

Toner Cartridge Microswitch (SW501) . . . . . . . . . . . . . . . . . 5-6

Print Density Adjustment . . . . . . . . . . . . . . . . . . . . . . . . 5-6

DC Controller System . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

DC Power Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

Laser and Scanner Drive . . . . . . . . . . . . . . . . . . . . . . . . 5-8

Paper Motion Monitoring and Control . . . . . . . . . . . . . . . . . 5-8

Clutches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

Engine Test Microswitch (SW7001) . . . . . . . . . . . . . . . . . . . 5-8

Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

Formatter System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10

Power Save . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11

Resolution Enhancement (REt) . . . . . . . . . . . . . . . . . . . . . 5-11

EconoMode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12

Input/Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13

Parallel Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13

Modular I/O (MIO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13

LocalTalk I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13

CPU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13

Printer Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14

Read Only Memory (ROM) . . . . . . . . . . . . . . . . . . . . . . . 5-14

Random Access Memory (RAM) . . . . . . . . . . . . . . . . . . . . . 5-14

SIMM Slots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14

Non-Volatile Memory (NVRAM) . . . . . . . . . . . . . . . . . . . . 5-14

Disk Accessory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14

Memory Enhancement technology (MEt) . . . . . . . . . . . . . . . . 5-15

Page Protect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15

PJL Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15

PML . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15

Functional Overview 5-1

Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16

Interface PCA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16

Image Formation System . . . . . . . . . . . . . . . . . . . . . . . . . 5-17

Toner Cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18

Toner Cartridge/High Voltage Power Supply Contacts . . . . . . . . 5-18

The Photosensitive Drum . . . . . . . . . . . . . . . . . . . . . . . . 5-18

Drum Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19

Drum Conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-20

Image Writing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21

Image Developing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-22

Image Transferring . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-23

Image Fusing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-24

Paper Feed System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-25

Paper Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-25

Clutches and Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26

Printing from the Paper Cassette . . . . . . . . . . . . . . . . . . . . 5-27

Printing from the MP Tray . . . . . . . . . . . . . . . . . . . . . . . 5-27

Printing from the Optional Lower Cassette . . . . . . . . . . . . . . 5-27

Paper Jam Detection . . . . . . . . . . . . . . . . . . . . . . . . . . 5-27

Basic Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . 5-28

5-2 Functional Overview

Basic Printer Functions

This chapter presents a generalized functional overview of the printer and

the printing processes. The following printer systems are discussed:

•Power Supply System

•DC Controller System

•Formatter PCA

•Control Panel

•Interface PCA

•Image Formation System

•Paper Feed System

•Basic Sequence of Operation

Figure 5-1 is a generalized block diagram of the printer:

Printer Functional Block Diagram

Formatter

PCA

Power

Supply

System

Control

Panel

Interface

PCA

DC Controller

System Paper Feed

System

Image Formation

System

MIO

Parallel

Port

5BLKDIA

Figure 5-1

Functional

Overview

Functional Overview 5-3

Power Supply System

The AC and DC power supply circuits are contained on the Power Supply

Unit, and the high voltage power circuitry is contained on the High Voltage

Power Supply PCA. The Power Supply and Distribution System is

illustrated in Figure 5-2.

Circuit

Breaker

CB101 Noise

Filter Filter

Fuse

(F101)

Power Switch

(SW101) Front Door

Switch

(SW102)

Fusing Heater

Drive Circuit

Power Supply Unit

24V to 5V

Switching

Transistor Trans-

former Rectifier

Control

IC Photo-

coupler

Overcurrent

Protection

Front Door Switch

(SW102)

+24V

/FUSE1ON

/FUSE2ON

/RELE

+24V

+5V

Fuser Heater

Controller

Laser / Scanner Unit

High

Voltage

Power

Supply

Main

Motor (M1)

Primary Charging Roller

Developing Bias

Transfer Charging Roller

Toner Sensor

Front Door

Assembly

Exhaust Fans

Intake Fan

FM1

FM3

FM2

Interface

PCA

Sensors, Clutches, Solenoids

Control Panel

Formatter PCA

+5V

+24V

+5V

+24V

+5V

+24V

+12V

+5V

+24V

/FUSE1ON

/FUSE2ON

/RELE

+24V

+5V

+5V (Low Spd.)

+24V (High Spd.)

+5V (Low Spd.)

+24V (High Spd.)

5BLKDIA

Figure 5-2 Power Supply/Power Distribution

5-4 Functional Overview

AC Power Distribution

The AC power circuitry supplies AC voltage whenever the power cord is

connected to the AC power source and the power switch is turned ON. A

toner cartridge must be installed and the front door closed before voltage is

supplied to the Power Supply circuits, the DC Controller, the Main Motor,

or the Fusing Assembly.

Overcurrent/Overvoltage Protection

There are three overvoltage /overcurrent devices in this printer:

The resettable circuit breaker (CB101) shuts off AC input power to the

Power Supply Unit in case of an AC overcurrent condition. To reset,

remove the Upper and Right side covers and push on the small round

button located directly above the ON/OFF switch.

Fuse F101 shuts off AC input power to the +24V DC and +5V DC power

circuits. To check or replace the fuse requires the removal of the Power

Supply Unit.

In addition, the +24V DC and +5V DC power circuitry contains an

overcurrent protection circuit which automatically shuts off the output

voltage when an overcurrent condition occurs due to a short or abnormal

voltage on the load side. The protection circuit automatically resets after

the input power is cycled OFF (for at least 3 minutes) then ON.

Functional

Overview

Functional Overview 5-5

High Voltage Power Distribution

The High Voltage Power Supply PCA applies an overlap of DC and AC

voltage to the primary charging roller and the developing roller. This

circuit also applies a positive or negative DC voltage to the transfer

charging roller according to the instructions from the CPU on the Formatter

PCA.

This circuit also controls the image density by changing the primary AC

voltage and the developing AC bias according to the setting of the print

density dial.

Refer to Figure 5-15 for High Voltage Power Supply timing information.

Toner Cartridge Microswitch (SW501)

Microswitch SW501, located on the High Voltage Power Supply PCA , is

activated by the toner cartridge. If the toner cartridge is not installed, the

switch opens and an error is issued by the Formatter causing the display

panel message 14 NO TONER CART to be displayed. A toner cartridge must be

installed and the front door must be closed before the printer can resume

printing.

Print Density Adjustment

Adjusting print density affects the line width (boldness) of the print image.

This is accomplished by varying the developer DC bias, which controls the

amount of toner applied to the photosensitive drum. The Print Density

control is accessible behind the front door. The point of the dark arrow is

the most reduced density setting and the thick end of the dark arrow is the

most increased density setting. The default setting is at center range.

5-6 Functional Overview

DC Controller System

The following systems and functions are controlled by the DC Controller:

•DC Power Distribution

•Laser and Scanner Drive

•Paper Motion Monitoring and Control

•Clutches, (Registration, Cassette Pickup, and MP Tray Pickup)

•Engine Test Microswitch

•Motors (Main Drive, Scanner, and Fans)

Figure 5-2 shows the Power Supply and Distribution System. Refer to the

wiring diagrams at the end of Chapter 7 for detailed listings of the DC

Controller inputs and outputs.

DC Power Distribution

The DC power distribution circuitry, located on the DC Controller PCA,

distributes +5 V dc, +12 V dc, and +24 V DC as follows:

+5 V dc: Control Panel

Formatter PCA

Photosensors (PS401, PS402)

DC Controller Circuitry

Laser/Scanner Assembly

Exhaust Fans, FM1 and FM2 (low speed)

Intake Fan, FM3

+12 V dc: Laser/Scanner Assembly

+24 V dc: Laser/Scanner Assembly

High Voltage Power Supply

Clutches and Solenoids

Exhaust Fans, FM1 and FM2 (high speed)

Functional

Overview

Functional Overview 5-7

Laser and Scanner Drive

Based on information received from the Formatter, the DC Controller sends

signals to the Laser/Scanner Assembly to modulate the laser diode ON and

OFF and to drive the Laser/Scanner motor. Refer to “Image Formation

System,” later in this chapter for more information.

Paper Motion Monitoring and Control

The DC Controller PCA controls paper motion by continuously monitoring

the various paper sensors, and coordinating the timing with the other print

processes.

For a detailed explanation of paper movement, and the interaction of

photosensors and solenoids with the paper movement process, refer to the

section “Paper Feed System,” later in this chapter.

Clutches

The drive signals for the Registration Clutch (CL1), Cassette Pickup Clutch

(CL2), and the MP Tray Pickup Clutch (CL3) are provided by the DC

Controller PCA.

Engine Test Microswitch (SW7001)

Microswitch SW7001, located on the DC Controller, is activated manually

through an access hole at the rear of the printer. This switch causes the

print engine to perform a self test diagnostic which bypasses the Formatter

PCA and print a full page of black parallel lines. This test is useful for

troubleshooting printer problems because it isolates the print engine from

the Formatter PCA.

5-8 Functional Overview

Motors

The Main Motor (M1) is controlled by the DC Controller PCA. The Main

Motor drives the Main Drive Assembly and rotates during the Initial

Rotation period (following initial power-ON), the Print period, or the Last

Rotation Period, or whenever the printer front door is opened and closed.

The Scanner Motor is controlled and monitored by the DC Controller. It

rotates the scanner mirror during the Initial Rotation period and the Print

period.

The Fan Motors (FM1, FM2, and FM3) are controlled and monitored by

the DC Controller PCA. The Intake Fan (FM3) operates continuously, and

the Exhaust Fans (FM1 and FM2) operate at low speed in the Standby

Mode, and at high speed during the Initial Rotation, Print and Last

Rotation periods. The exhaust fans turn off in the Power Save mode after

the Fuser cools down.

Functional

Overview

Functional Overview 5-9

Formatter System

The Formatter PCA is responsible for the following:

•Controlling the Power Save mode.

•Receiving and processing print data from the various printer interfaces.

•Monitoring front control input and relaying printer status information

(through the front control and the Bi-Directional I/O).

•Developing and coordinating data placement and timing with the print

engine.

•Storing font information.

•Communicating with the host computer through the Bi-Directional

Interface.

Formatter PCA Block Diagram

The Formatter PCA receives print data from the Bi-Tronics Interface and

converts it into a dot image. The DC Controller synchronizes the Image

Formation System with the Paper Feed System, and signals the Formatter

to send the print image data. The Formatter sends the print image data

(dots) in the form of a VIDEO signal and the printing process begins.

The Formatter PCA also provides mounting locations for the MIO PCA,

additional memory SIMMs, the PostScript SIMM, and the Disk Accessory.

Interface

PCA

Disk

Accessory

Parallel Interface

MIO

Formatter PCA

SIMM Slots

Additional RAM

PostScript

Firmware

Upgrades

5FMTBLK

Figure 5-3

5-10 Functional Overview

Power Save

This user-adjustable feature conserves power by shutting down the fuser

and exhaust fans after the printer has been idle for 15 minutes, 30 minutes,

1 hour, 2 hours, or 3 hours. A 10 second interval is also available in Service

Mode. The printer retains all printer settings and downloaded fonts and

macros while in Power Save mode. The default setting is Power Save ON,

with a 15 minute idle time. (Power Save can also be turned OFF from the

control panel.)

The printer exits Power Save mode and enters the warm up cycle when any

of the following occur:

•A job is printed.

•A control panel key is pressed.

•The printer front door is opened and closed.

•A paper cassette is removed or installed.

NOTE Printer error messages override the Power Save message. The printer will

enter Power Save mode at the appropriate time, but the error message will

continue to be displayed.

Resolution Enhancement (REt)

The Formatter PCA contains circuitry for Resolution Enhancement

technology (REt), which modifies the standard video dot data on its way to

the DC Controller to produce “smoothed” black-to-white boundaries. REt is

user-adjustable from the control panel, or from some software applications.

Available settings are Light, Medium, Dark, or Off. The default setting is

Medium.

NOTE REt settings sent from software or printer drivers override any control

panel settings.

Functional

Overview

Functional Overview 5-11

EconoMode

The EconoMode setting uses approximately 75% less toner than standard

mode printing by reducing the dot density. However, Economode does not

extend toner cartridge component life. EconoMode, which can also be

thought of as “draft mode,” is user selectable via a control panel key and

some software applications. The default setting is Off.

EconoMode vs Normal Mode

NOTE EconoMode does not affect print speed, memory usage, or extend toner

cartridge life.

Normal Mode,

Medium Density

EconoMode,

Medium Density

5ECONO

Figure 5-4

5-12 Functional Overview

Input/Output

Parallel Interface

The Formatter PCA receives incoming data through its Bi-Tronics interface

(IEEE 1284). The Bi-Tronics I/O provides high speed and two-way

communication between the printer and the host, allowing the user to

change printer settings and monitor printer status from the host computer.

The “High Speed (Yes/No)” configuration item is user-selectable. The

default setting, “Yes” allows the I/O to run at the higher speeds supported

by most newer PCs. When set to “No,” the parallel interface runs at the

slower, but compatible mode for older PCs. The “Advanced Functions

(On/Off)” configuration item is also user-selectable. The default setting,

“On” allows for two-way parallel communications. The “Off” mode disables

the advanced functionality. The Bi-Tronics I/O is compatible with the

Centronics parallel interface standard.

NOTE Refer to “Parallel Cable Pin Configuration” in Appendix B for parallel pin

assignments.

Modular I/O (MIO)

The optional Modular I/O card can be installed in the slot provided on the

Formatter PCA. It provides automatic I/O switching between multiple

computers or networks connected to the printer. The LaserJet 4MV printer

includes the J2552A HP JetDirect Multi-protocol Network Card with

LocalTalk, DIN-8, and Ethernet/IEEE802.3 10Base-T, BNC.

LocalTalk I/O

The printer implements AppleTalk networking protocol through LocalTalk

hardware. The LocalTalk network cable (HP P/N 92215N) is connected

through the MIO card accessible from the printer rear panel. (See

Appendix B for more cabling information.)

CPU

The Formatter PCA incorporates the Intel 80960CF microprocessor

operating at 33.33 MHz.

Functional

Overview

Functional Overview 5-13

Printer Memory

NOTE If the printer encounters difficulty managing available memory, a Clearable

Warning message will be displayed on the Control Panel. Refer to

“Clearable Warnings” in Chapter 7 for details.

Read Only Memory (ROM)

Besides storing microprocessor control programs, the ROM stores dot

patterns of internal character sets (fonts).

Random Access Memory (RAM)

The RAM contains the page and I/O buffers and the font storage area. It

stores printing and font information received from the host system, and can

also serve to temporarily store a full page of print image data before the

data is sent to the print engine (see “Page Protect”). RAM memory

capacities for each printer are shown under “Printer Features” in Chapter 1.

Memory capacities can be increased by adding SIMMs to the Formatter

PCA. Note that adding memory (SIMMs) may also increase print speed

when printing complex graphics.

SIMM Slots

The SIMM slots may be used to add memory, fonts, the PostScript

Language SIMM, or firmware upgrades.

The optional PostScript language SIMM can be installed in any of the

SIMM slots on the Formatter PCA. It allows the printer to automatically

receive and print files configured in the Adobe PostScript language . An

additional 8-Mbytes of memory is recommended for PostScript printing.

Non-Volatile Memory (NVRAM)

The printer uses NVRAM to store I/O and print environment configuration

information. The contents of NVRAM are retained when the printer power

is turned off or disconnected.

Disk Accessory

The optional Disk Accessory is mounted on the rear of the Formatter PCA.

It can be used to permanently store downloaded Adobe PostScript fonts and

forms in the printer. The disk provides 42.8 Mbytes of storage area for

these functions.

5-14 Functional Overview

Memory Enhancement technology (MEt)

The Hewlett-Packard Memory Enhancement technology (Met) effectively

doubles the standard memory through a variety of font and data

compression methods.

NOTE MEt is only available in PCL mode; it is not functional when printing in

PostScript mode.

Page Protect

Page complexity (rules, complex graphics or dense text) may exceed the

printer’s ability to create the page image fast enough to keep pace with the

Image Formation process. If Page Protect is disabled, and a page is too

complex, it may print in parts (for example, the top half on one page and the

bottom half on the next page). Some print data loss is likely in these

instances, and the printer will display the 21 PRINT OVERRUN error message.

Page Protect allows the Formatter to create the entire page image in page

buffer memory before physically moving the paper through the printer.

This process ensures that the entire page will be printed. Page Protect

applies only to PCL printing. The default setting is Auto.

PJL Overview

Printer Job Language (PJL) is an integral part of configuration, in addition

to the standard Printer Command Language (PCL). With standard

Centronics cabling, PJL allows the printer to perform functions such as:

•Two-way communication with the host computer through a

Bi-directional Parallel connection. The printer can tell the host such things

as the control panel settings, and allow the control panel settings to be

changed from the host.

•Dynamic I/O switching allows the printer to be configured with a host on

each I/O. The printer can receive data from more than one I/O

simultaneously, until the I/O buffer is full. This can occur even when the

printer is off-line.

•Context-sensitive switching allows the printer to automatically

recognize the personalities (PostScript or PCL) of each job and configure

itself to serve that personality.

•Isolation of print environment settings from one print job to the next.

For example, if a print job is sent to the printer in landscape mode, the

subsequent print jobs print in landscape only if they are formatted for

landscape printing.

PML

PML is a Printer Management Language that allows remote configuration

and status readback through the I/O ports.

Functional

Overview

Functional Overview 5-15

Control Panel

The Formatter PCA sends and receives printer status and command data

via a Control Panel PCA. The Control Panel consists of a 16-character

display window and an 8-key keypad. Control Panel messages can be

configured in any of several languages. Refer to “Using the Control Panel,”

in Chapter 3, and to “Printer Message Troubleshooting” in Chapter 7, for

more information.

The eight keys on the keypad are used for a variety of functions (see

Chapter 3). Keyboard overlays are available in any of several different

languages (see Chapter 8 for part numbers).

Interface PCA

The Interface PCA provides the interconnections between the Formatter

PCA, the Control Panel and the DC Controller PCA. Refer to Figure 5-1

and the Main Wiring diagram at the end of Chapter 7. The Interface PCA is

located inside the Card Cage Assembly and contains no active circuitry.

5-16 Functional Overview

Image Formation System

Laser printing requires the interaction of several different technologies

(such as electronics, optics, and electrophotographics) to provide a printed

page. Each process functions independently and must be coordinated with

the other printer processes. Image formation consists of six processes:

1. Drum Cleaning 4. Image Developing

2. Drum Conditioning 5. Image Transferring

3. Image Writing 6. Image Fusing

Image Formation Block Diagram

Toner Cartridge

Laser / Scanner Front Door

Paper

Delivery

Drum

Cleaning

Image

Fusing

Image

Transferring

Image

Developing

Image

Writing

Drum

Conditioning

5IMFBLK

Figure 5-5

Functional

Overview

Functional Overview 5-17

Toner Cartridge

The toner cartridge is the “heart” of the Image Formation System. It houses

the cleaning, conditioning, and developing steps of the process. The toner

cartridge contains the photosensitive drum, primary charging roller,

developing station, toner cavity, and cleaning station. Including these

components that wear, degrade, or are consumed in the replaceable toner

cartridge eliminates the need for a service call when replacement is

required.

Toner Cartridge/High Voltage Power Supply Contacts

The toner cartridge has three contacts which route voltage from the HVPS

PCA. They are:

•Upper: Primary Charge

•Middle: Developing Bias

•Lower: Toner Sensing

The Photosensitive Drum

The special properties of the photosensitive drum allow an image to be

formed on the drum surface and then transferred to paper. The drum is an

aluminum cylinder. The outside of the cylinder is coated with a layer of

organic-photoconductive material (OPC) which is non-toxic. The OPC

material has properties similar to a photo-resistor. It becomes electrically

conductive when exposed to light. When exposed to light, the negative

charges deposited on the drum are conducted to the ground potential of

the drum base. Areas not exposed to light remain non-conductive and

maintain their negative charge. The aluminum base of the photosensitive

drum is electrically connected to ground potential.

Photosensitive Drum

Photosensitive

Layer

Aluminum

Base

5PHODRM

Figure 5-6

5-18 Functional Overview

Drum Cleaning

The cleaning blade is in contact with the surface of the drum at all times.

As the drum rotates during printing, excess toner is stored in the waste

toner receptacle.

Drum Cleaning

Cleaning

Blade

Waste Toner

Receptacle

Photosensitive

Drum

Toner Cartridge

5DRMCLN

Figure 5-7

Functional

Overview

Functional Overview 5-19

Drum Conditioning

After the drum is physically cleaned, it must be conditioned. This process

consists of applying a uniform negative charge on the surface of the drum

with the primary charging roller, located in the toner cartridge. The

primary charging roller is coated with conductive rubber with an AC bias

applied to erase any residual charges and maintain a constant drum surface

potential. In addition, a negative DC bias is applied by the charging roller

to create a uniform negative potential on the drum surface. The amount of

DC voltage is modified by the print density setting.

Primary Charging Roller

Photosensitive

Drum

Primary charging

roller

AC bias

DC bias

5PRIROL

Figure 5-8

5-20 Functional Overview

Image Writing

During the writing process, a modulated laser diode projects the beam onto

the rotating six-sided scanning mirror. As the mirror rotates, the beam

reflects off the mirror, through a set of focusing lenses, through a slot in the

rear of the toner cartridge, and onto the photosensitive drum. The beam

sweeps the drum from left to right, discharging the negative potential

wherever the beam strikes the surface. This creates a latent electrostatic

image, which later is developed into a visible image (see Figure 5-9).

Image Writing

Because the beam is sweeping the entire length of the drum and the drum is

rotating, the entire surface area of the drum can be covered. The speed of

the scanner motor (which turns the scanning mirror) and the speed of the

main motor (which turns the drum) are synchronized, and each successive

sweep of the beam is offset 1/600th of an inch. The beam can be turned on

and off to place a dot of light every 1/600th of an inch. This is how the

printer achieves its 600 x 600 dpi resolution. After the writing process, the

drum surface has an invisible (latent) electrostatic image.

At the end of each sweep, the beam strikes the beam detect lens, generating

the Beam Detect Signal (BD). The BD signal is sent to the DC Controller,

where it is converted to an electrical signal used to synchronize the output

of data (VDO) for one sweep (scan line) and to diagnose problems with the

laser diode or scanner motor.

Photosensitive Drum

BD Mirror

BDIC PCB BD Lens

Focusing

Lens

Scanning Mirror

(Hexahedron)

Scanner

Motor

Laser Driver

Cylindrical Lens

5IMGWRT

Figure 5-9

Functional

Overview

Functional Overview 5-21

Image Developing

The developing process develops the latent electrostatic image into a visible

image on the drum. The developing unit consists of a metallic cylinder that

rotates around a fixed magnetic core inside the toner cavity. Toner is a

powdery substance made of black plastic resin bound to iron particles,

which is attracted to the magnetic core of the cylinder. A rubber blade

“brushes” the toner on the developing cylinder to a uniform thickness.

The toner particles obtain a negative surface charge by rubbing against the

developing cylinder which is connected to a negative DC supply. The

negatively charged toner is attracted to the discharged (exposed, grounded)

areas of the drum, and repelled from the negatively charged (non-exposed)

areas. An AC potential is applied to the developing cylinder to decrease the

attraction between the toner and the magnetic core of the cylinder, and to

increase the repelling action of toner against the areas of the drum not

exposed to laser light. This AC potential improves density and contrast.

Image Development

The Print Density control (behind the front door) adjusts the DC bias of the

developing cylinder by changing the force of attraction between the toner

and drum. A change in DC bias causes either more or less toner to be

attracted to the drum, which in turn either increases or decreases the print

density. Both the primary and developer DC bias voltages are changed in

response to the density setting.

5IMGDEV

Figure 5-10

5-22 Functional Overview

Image Transferring

During the transferring process, the toner image on the drum surface is

transferred to the paper. A positive charge applied to the back of the paper,

by the transfer roller causes the negatively charged toner on the drum

surface to be attracted to the page.

The small diameter of the drum, combined with the stiffness of the paper

causes the paper to peel away from the drum. The static eliminator teeth

also help separate the paper from the drum. The static eliminator teeth

weaken the attractive forces between the negatively charged drum surface

and the positively charged paper. Without this help, thin paper may wrap

around the drum. After separation, the drum is cleaned and conditioned for

the next image.

Image Transferring

Transfer

Charging

Roller

Photosensitive

Drum

Paper

Static Charge

Eliminator

5TRNSTG

Figure 5-11

Functional

Overview

Functional Overview 5-23

Image Fusing

During the fusing process, the toner is fused into the paper by heat and

pressure to produce a permanent image. The paper passes between a

heated fusing roller and a soft pressure roller. This melts the toner and

presses it into the paper.

The fusing roller contains a quartz-halogen lamp that provides heat for the

fusing process. Fusing temperature is monitored by the DC Controller PCA,

via thermistor TH1. The DC Controller maintains a temperature of about

180° C during print mode. If the fusing system overheats (about 220° C), a

relay opens, interrupting power to the fusing heater, causing a fuser error

(50 SERVICE) message. If the fusing system exceeds 240° C, the thermal

fuse will open, cutting off power to the fuser.

Image Fusing

Fusing Roller

Halogen Heater

Paper

Pressure

Roller

Toner

5FUSSTG

Figure 5-12

5-24 Functional Overview

Paper Feed System

Paper Path

The paper feed system picks print media automatically from the paper

cassette, optional lower cassette, or accepts it from the MP Tray, and

delivers it to the image formation system at precisely the right time. The

system then feeds the media to the fusing station, and delivers the finished

product to the output bin on top of the printer.

Figure 5-13 shows a simplified paper path and the approximate location of

the major components.

Paper Path

NOTE: The Paper Cassette and Lower Cassette Paper Guide must be in place for

the Optional Lower Cassette to operate properly.

When the optional lower cassette is installed it becomes the default paper

source.

Output Delivery Rollers

Fusing Rollers

Transfer Charging

Roller

Registration Rollers

Cassette Pick-up

Roller

Toner Cartridge

MP Tray Pick-up

Roller

Paper Cassette

Optional Lower

Cassette

Lower Cassette Paper Guide

Lower Cassette Pickup Rollers

Figure 5-13

Functional

Overview

Functional Overview 5-25

Clutches and Sensors

Figure 5-14 shows the locations of the various solenoids, photosensors and

rollers.

Clutches and Sensors

5CLUTCH

Figure 5-14

No. Name Description

PS1 MP Tray paper sensor Senses paper in the MP Tray.

PS401 Delivery Unit paper sensor Senses paper in the fuser area.

PS402 Front Door Open sensor Senses position of the printer front door.

PS501 Pickup Unit paper sensor Senses paper in the registration roller area.

PS502 Cassette paper sensor Senses presence of paper in the lower cassette.

CL1 Registration clutch Engages the registration rollers.

CL2 Cassette pickup clutch Engages the cassette pickup rollers.

CL3 MP Tray pickup clutch Engages the MP Pickup roller.

SL1 Intermediate plate pressurization solenoid Releases the spring-loaded plate, allowing paper to contact

the MP roller.

Table 5-1 Clutches and Sensors

5-26 Functional Overview

Printing from the Paper Cassette

Paper motion begins when the DC Controller PCA, after receiving a PRINT

signal, starts the Scanner Motor, the Main Motor, and the fusing heater.

The Cassette Pickup Clutch (CL2) is energized for 0.5 seconds, the pickup

roller and the registration roller rotate and feed a sheet of paper from the

Paper Cassette to the Registration Position, where the registration roller is

stopped by the Registration Clutch (CL1), if necessary, until the Scanner

and Fuser are ready.

The DC Controller sends the VSREQ signal to the Formatter PCA within a

specified amount of time after the Pickup Unit Photosensor (PS501) is

activated. The leading edge of the media is now ready to proceed to the

photosensitive drum. When the print engine receives the VSYNC and VDO

signals, the printing process begins. After the paper passes by the drum,

and through the fusing unit, it triggers the Delivery Unit Photosensor

(PS401). The paper is then fed through the output rollers and to the top

output bin.

Printing from the MP Tray

The presence of paper in the Multipurpose (MP) Tray is detected by the MP

Tray Paper Sensor (PS1). The intermediate plate pressurization solenoid

(SL1) is then activated, releasing the plate which applies upward pressure

on the paper, causing it to contact the MP pickup roller. The MP Pickup

Clutch (CL1) turns on at this time, allowing the registration roller to rotate.

This feeds the paper from the MP Tray to the registration position.

The remainder of the MP Tray print process is identical to the cassette feed

process, described above.

Printing from the Optional Lower Cassette

When printing from the optional lower cassette, any of the 250-sheet paper

cassettes must also be in place. The Pickup Arm in the optional lower

cassette feeds the paper upward through a guide slot in the 250-sheet

cassette to the Registration Roller. Once there, the operation is the same as

printing from a standard paper cassette.

Paper Jam Detection

The Pickup Unit photosensor (PS501) in the registration area and Delivery

Unit photosensor (PS401) in the output area detect when paper is moving

through the printer (see Figure 5-14 for sensor locations). If a paper jam is

detected, the DC Controller immediately stops the printing process and

causes a 13 PAPER JAM message to be displayed on the control panel.

Functional

Overview

Functional Overview 5-27

Basic Sequence of Operation

The Formatter PCA and the DC Controller PCA share information during

printer operation. The Interface PCA forms a link which operates as a

serial data bus. This allows printer status, command, and dot-image data to

be passed between the two PCAs. Figure 5-15 shows the general timing of

the printer events. The following events take place during normal printer

operation:

Period Timing Purpose

WAIT From power ON to the end of Main Motor

initial rotation. Clear the drum surface potential and

clean the Transfer Roller.

STBY

(standby) From the end of the WAIT or the LSTR

period until the input of the PRNT signal

from the Formatter. Or from the end of the

LSTR period until power OFF.

Maintain the printer in ready state.

INTR (initial

rotation) From the input of the PRNT signal from

the Formatter until the laser diode

intensity has been stabilized.

Stabilize the photosensitive drum

sensitivity in preparation for printing. Also

clean the Transfer Roller.

PRNT From the end of initial rotation until the

Scanner Motor stops. Form images on the photosensitive drum

based on the /VDO signal from the

Formatter and transfer the image to paper.

LSTR (last

rotation) From the primary voltage (DC) OFF until

the Main Motor stops.

If another PRNT signal is sent from the

Formatter, the printer returns to the INTR

period. If not, it returns to the STBY

period.

Deliver the last sheet of paper. Also clean

the Transfer Roller.

Table 5-2 Printer Timing

5-28 Functional Overview

General Timing Diagram

5TMEDIAG

Figure 5-15

Functional

Overview

Functional Overview 5-29

5-30 Functional Overview

Removal and Replacement

Chapter Contents

Removal and Replacement Strategy . . . . . . . . . . . . . . . . . . . . 6-3

Required Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

User Installable Accessories . . . . . . . . . . . . . . . . . . . . . . . . 6-5

Covers and Doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8

Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8

Upper Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9

Static Charge Eliminator . . . . . . . . . . . . . . . . . . . . . . . . 6-10

Side Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11

Rear Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12

Left Side Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13

Exhaust Fan (FM1) . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13

High Voltage Power Supply PCA . . . . . . . . . . . . . . . . . . . . 6-14

Cassette Size Sensor Assembly . . . . . . . . . . . . . . . . . . . . . 6-15

Rear and Top Area Assemblies . . . . . . . . . . . . . . . . . . . . . . . 6-16

Card Cage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16

Rear Exhaust Fan (FM2) . . . . . . . . . . . . . . . . . . . . . . . . 6-17

Power Supply Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18

DC Controller PCA . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-19

Laser/Scanner Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 6-20

Right Side Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-21

Main Motor (M1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-21

Main Drive Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 6-22

Drum Drive Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 6-24

Front Door Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-25

Transfer Roller Assembly . . . . . . . . . . . . . . . . . . . . . . . . 6-25

Fusing Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-26

Fuser Inlet Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-27

Paper Guide Plate Assembly . . . . . . . . . . . . . . . . . . . . . . 6-28

MP Guide Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-29

MP Drive Gears . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-30

Fuser Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-31

MP Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-32

Front Door Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-33

Removal and Replacement 6-1

Delivery Area Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . 6-34

Upper and Lower Delivery Roller Assemblies . . . . . . . . . . . . . 6-34

Delivery Gear Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 6-35

Cartridge Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-36

Cassette Pickup Roller Assembly . . . . . . . . . . . . . . . . . . . . 6-37

Separation Pad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-38

Registration Roller . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-39

Registration Roller Guide Plate . . . . . . . . . . . . . . . . . . . . . 6-41

Anti-Static Brush . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-42

Paper Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-43

Bottom Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-44

Foot Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-44

6-2 Removal and Replacement

Removal and Replacement Strategy

This chapter documents removal and replacement of major assemblies.

Replacement is generally the reverse of removal. Occasionally, information

is included to provide direction for difficult or critical replacement

procedures.

WARNING! Unplug the power cord from the power outlet before attempting to service

the printer. If this warning is not followed, severe injury may result.

Never operate or service the printer with the protective cover removed from

the Laser/Scanner assembly. The reflected beam, although invisible, can

damage your eyes.

This printer has some sharp sheet metal edges which can cause injury.

CAUTION The printer contains parts that are electrostatic discharge (ESD) sensitive.

Always service printers at an ESD protected workstation. Watch for the

ESD reminder shown at left while performing removal procedures.

6Removal &

Replacement

Removal and Replacement 6-3

Required Tools

•#2 Magnetized Phillips Screwdriver (6-inch shaft)

•#2 Stubby Magnetized Phillips Screwdriver (1-inch shaft)

•Small flat-blade Screwdriver

•Small Pair Needle Nose Pliers

All screws used in field-replaceable printer components are Phillips head

screws which require a #2 size Phillips screwdriver. Figure 6-1 shows the

difference between a Phillips and a Pozidriv screwdriver. Note that the

Phillips tip has more beveled surfaces.

CAUTION A Posidriv screwdriver will damage the screw heads. Use Phillips only.

Phillips vs. Posidriv Screwdrivers

NOTE See Chapter 8 for a table listing screws and other common hardware used in

the printer.

CAUTION To install a self-tapping screw, first turn it counter-clockwise to align it with

the existing thread pattern, then carefully turn clockwise to tighten. Do not

over-tighten. If a self-tapping screw-hole becomes stripped, repair of the

screw-hole or replacement of the affected assembly is required.

PosidrivPhillips

Figure 6-1

6-4 Removal and Replacement

User Installable Accessories

Memory Upgrade

CAUTION

SIMMs and the Formatter PCA can be

damaged by small amounts of

electro-static discharge (ESD). Wear

an anti-static wrist strap.

1With the printer OFF and unplugged,

loosen the two captive screws and remove

the Formatter PCA.

2Remove the SIMM from the anti-static

package. Hold the board with your

forefingers on the side edges and your

thumbs against the back edge, so the

notch on one end is on the right and the

metal teeth face toward the SIMM slot

(match the positioning shown in frame 2).

3Insert the board firmly into the SIMM slot

at about a 20-degree angle. Use closest

open slot toward the back of the printer.

4Rotate the SIMM toward the back of the

printer to a 45-degree angle until it clicks

into the metal locking tabs. If it is

properly seated, it will not lift away from

the slot. (To remove a SIMM, you must

first release the metal locking tabs.)

5Slide the printer Formatter PCA back into

the printer and tighten the two screws.

6Re-attach any cables and the power cord,

then switch the printer ON and print a

self-test to verify the new memory is

available. If the SIMM is not recognized,

turn the printer OFF and reseat the

SIMM. If an error occurs, refer to

“Service and Error Messages” in

Chapter 7.

6Removal &

Replacement

Removal and Replacement 6-5

Disk Accessory

The Disk Accessory is housed under a

protective plastic cover on the left rear corner

of the Formatter PCA. The plastic cover and

the disk should be removed as one piece.

1With the printer OFF and unplugged,

loosen (2) captive screws and remove the

Formatter PCA. Place the PCA face-up

on an ESD-safe surface.

2The disk assembly is connected to the

Formatter PCA with two plastic locking

pins and a 50 pin connector. Grasp the

two sides of the disk cover near the

locking pins and lift firmly upward. The

locking pins will release along with the

connector pins of the disk.

To Reinstall:

NOTE

The PostScript option must be installed and

operating before installing the Disk Accessory.

1Hold the disk by the side edges of the cover

and align it with the diagram printed on the

formatter board. Align the connector pins

carefully to prevent bending or

mis-alignment. Align the cover locking pins

with the holes in the formatter board.

CAUTION

Never press on the center of the disk. Press

only on the edge of the cover directly above the

connector to prevent damage to the disk.

Carefully press the connector pins and cover

locking pins into place. Check the connector pins

for proper seating. Re-seat as necessary.

2Print a PostScript Configuration page

(PS CONFIG PAGE) from the control

panel. Verify the entry under “Disk

Accessory” reads “Disk Installed: YES”

and lists available capacity.

NOTE

When the disk drive is replaced, all fonts and

macros must be re-loaded.

6diskdrv

6-6 Removal and Replacement

Optional Lower Cassette

The Optional Lower Cassette requires

installation of a Lower Cassette Paper Guide

on the bottom of the printer, as well as

connection of a cable to the rear of the left

foot. Before beginning, unplug the printer

from the power source and remove the toner

cartridge and paper cassette.

WARNING!

Get another person to help handle the printer.

1Remove 11 x 17 / A3 Paper Cassette dust

cover and cable connector cover from back

of printer.

2Turn the printer onto its right side (NOT

the side with exhaust vents). Install the

Lower Cassette Paper Guide and return

the printer to upright position.

3Release Lower Cassette shipping lock to

unlocked position, and set the printer onto

the Lower Cassette base, being careful to

align the locater pins.

4Connect the Lower Cassette base cable

into the connector (A), and replace the

cable connector cover (B).

NOTE:

The Paper Cassette and Lower Cassette

Paper Guide must be in place for the Lower

Cassette to operate properly.

When the Lower Cassette is installed, it

becomes the default paper source.

6Removal &

Replacement

Removal and Replacement 6-7

Covers and Doors

The printer covers are in four separate components: the Upper Cover (includes

the Control Panel), the Left and Right Side Covers, and the Rear Cover.

Control Panel

The Control Panel Assembly includes the Control Panel PCA and its plastic

cover as shown in Figure 6-2.

1Press the back of the control panel cover to release the retaining clips (see

Figure 6-2).

2Carefully lift the right end of the control panel cover and disconnect the

cable from the Control Panel PCA.

Removing the Control Panel

To Reinstall:

Be careful to align the tabs at the front of the Control Panel into their

alignment holes. Make sure the tabs at the back of the Control Panel are

placed inside the Upper Cover before pressing into place.

NOTE When replacing a control panel that has a non-English keyboard overlay, be

sure to remove the overlay and install on the new control panel.

6CONPNL

6CONPNLWMF

Figure 6-2

6-8 Removal and Replacement

Upper Cover

The Upper Cover is held in place by two screws, which are accessed from

the front of the printer.

1Open the front door.

2Remove (2) screws shown in Figure 6-3.

3Tilt the front of the cover up, slide it to the rear, unsnap cable from retainer,

and unplug the control panel connector from the Interface PCA.

Upper Cover

6TCOVER

6TCOVERWMF

Figure 6-3

6Removal &

Replacement

Removal and Replacement 6-9

Static Charge Eliminator

CAUTION Remove the Static Charge Eliminator only if replacing. Removing it may

damage the accessory.

1Remove Upper Cover (see Figure 6-3).

2Remove delivery tray by removing (2) screws (Figure 6-4, callout 1).

3Remove (2) screws (Figure 6-4, callout 2).

4Using needlenose pliers, remove the Static Charge Eliminator.

Static Charge Eliminator

Figure 6-4

6-10 Removal and Replacement

Side Covers

1Remove the Upper Cover (Figure 6-3).

NOTE The left cover tab (shown) presses to the rear; the right cover tab presses to

the front.

2Press on the tab to release the top edge of each side cover (Figure 6-5).

3Tilt the cover outward and lift up.

Removing Side Covers

To Reinstall:

Make sure the locator tabs at the bottom of the covers are properly placed in

the alignment holes in the chassis before snapping covers into place.

6LFTCVR

6LFTCVRWMF

Figure 6-5

6Removal &

Replacement

Removal and Replacement 6-11

Rear Cover

1Remove (1) machine screw (Figure 6-6, callout 1) and (1) shoulder screw

(Figure 6-6, callout 2).

2Tilt the cover outward and lift off.

Removing Rear Cover

To Reinstall:

Make sure the locator tabs at the bottom of the covers are properly placed in

the alignment holes in the chassis before snapping covers into place.

6REARCVR

6REARCVRWMF

Figure 6-6

6-12 Removal and Replacement

Left Side Assemblies

Exhaust Fan (FM1)

The Exhaust Fan is located on the left side of the printer, just above the

High Voltage Power Supply PCA.

1Unplug the fan connector from the DC Controller (Figure 6-7, callout 1) and

remove the cable from the (2) clips (Figure 6-7, callout 2).

2Lift the fan out of its mounting, noting the position of the cabling (attaches

to lower left outside of the fan body).

NOTE Removal of the Card Cage provides easier access to the connector on the

DC Controller PCA, especially when reconnecting (Figure 6-7, callout 1).

Exhaust Fan

To Reinstall:

Make sure that the fan is installed in the correct direction (exhaust, not

intake). The cables should be toward the outside.

6fusfan

6fusfanwmf

Figure 6-7

6Removal &

Replacement

Removal and Replacement 6-13

High Voltage Power Supply PCA

The High Voltage Power Supply is located along the left side of the printer.

1Remove the (2) connectors (Figure 6-8, callout 1).

2Remove (4) machine screws (Figure 6-8, callout 2).

3Remove (4) self-tapping screws (Figure 6-8, callout 3).

4Bend back the plastic cover and remove (1) machine grounding screw

located beneath the plastic cover (Figure 6-8, callout 4).

5Remove the PCA.

High Voltage Power Supply PCA

To Reinstall:

Note the position of the Print Density Dial, and how it is seated in the slide

adjustment as shown in Figure 6-8, callout 5.

CAUTION If the Print Density Dial is not seated properly, the printer will not print

properly.

6HVPS

6HVPSWMF

Figure 6-8

6-14 Removal and Replacement

Cassette Size Sensor Assembly

1Remove the High Voltage Power Supply PCA (see Figure 6-8).

2Disconnect the cable (see Figure 6-9, callout 1).

3Remove the (1) machine screw (see Figure 6-9, callout 2).

CAUTION Be careful not to damage the sensor tabs when removing the assembly.

4Carefully lift the Cassette Size Sensor Assembly up and out of the chassis.

Cassette Size Sensor Assembly

To Reinstall:

Make sure the Cassette Size Sensor Assembly mounting bracket fits

properly over the chassis locating pins when replacing the assembly.

Make sure the connector is fully inserted into its receptacle.

6papsen

6papsenwmf

Figure 6-9

6Removal &

Replacement

Removal and Replacement 6-15

Rear and Top Area Assemblies

Card Cage

The Card Cage is located directly underneath the Upper Cover. It is not

necessary to remove the Formatter or MIO from the Card Cage.

1Disconnect the interface cable (Figure 6-10, callout 1).

2Release the cable from the (3) cable clips (Figure 6-10, callout 2).

NOTE Do not remove (2) screws indicated in Figure 6-20 by the null symbol ( ).

3Remove (6) screws (four are in line with the cable clip, and two at the rear)

from the top of the plate (Figure 6-10, callout 3).

4Remove (1) screw from the back of the plate (Figure 6-10, callout 4).

5Loosen (do not remove) (1) screw as shown in Figure 6-10, callout 5.

6Lift the Card Cage off of the printer.

Card Cage

To Reinstall:

When reinstalling the Card Cage pay careful attention to the routing of the

cables and the position of the cable clip shown in Figure 6-10, callout 2.

6cardcg

6cardcgwmf

Figure 6-10

6-16 Removal and Replacement

Rear Exhaust Fan (FM2)

The Rear Exhaust Fan is located on the left rear of the printer chassis, and

requires prior removal of the Card Cage assembly.

1Remove the Card Cage assembly (see Figure 6-10).

2Unplug the fan cable connector and release it from its cable clip

(Figure 6-11, callout 1).

3Remove (2) small machine screws from the rear of the printer (Figure 6-11,

callout 2).

4Lift the fan up and away from the printer chassis, noting position of the

cable on the upper right corner of the fan body (Figure 6-11, callout 3).

Rear Exhaust Fan

To Reinstall:

Make sure the fan body is seated to the rear of the chassis mounting tabs.

6cardcg

6cardcgwmf

Figure 6-11

6Removal &

Replacement

Removal and Replacement 6-17

Power Supply Unit

The front door must be opened prior to removing the Power Supply Unit.

1Remove the Card Cage assembly (see Figure 6-10).

2Unplug the connector from the Fusing assembly (Figure 6-12, callout 1).

3Unplug the connector from the DC Controller PCA (Figure 6-12, callout 2).

4Remove the cables from the (4) cable clips (Figure 6-12, callout 3) and

remove the DC Controller and Formatter power cables.

5Remove (3) machine screws (Figure 6-12, callout 4).

6Remove (1) machine grounding screw with star washer (Figure 6-12, callout 5).

7Lift the assembly up to clear the chassis and pull sideways out of the printer.

Power Supply Unit

6acin

6acinwmf

Figure 6-12

6-18 Removal and Replacement

DC Controller PCA

The DC Controller PCA is located directly beneath the Card Cage assembly.

1Remove the Card Cage assembly (see Figure 6-10).

CAUTION (4) connectors are hardwired to the DC Controller and must be unplugged at

the other end of the wires.

2Unplug (2) connectors from the top edge of the High Voltage Power Supply

PCA (Figure 6-13, callout 1).

3Unplug (1) connector from the top of the main motor and release the cable

from the (3) clips (Figure 6-13, callout 2).

4Unplug (1) connector from the side of the Laser Scanner PCA and release it

from its clip (Figure 6-13, callout 3).

5Unplug (9) connectors from the PCA (Figure 6-13, callout 4).

6The DC Controller is now free. Slide it toward the back of the printer and

lift out.

DC Controller PCA

dccont

dccontwmf

Figure 6-13

6Removal &

Replacement

Removal and Replacement 6-19

Laser/Scanner Assembly

The Laser/Scanner assembly is located under the DC Controller PCA.

1Remove the following components:

•Card Cage assembly (Figure 6-10)

•Rear Exhaust Fan (FM2) (Figure 6-11)

•Power Supply Unit (Figure 6-12)

•DC Controller PCA (Figure 6-13)

2Remove (4) long, machine screws (Figure 6-14).

3Lift up slightly to disengage from alignment pins and carefully slide the

Laser/Scanner assembly out the side of the printer chassis.

Laser/Scanner Assembly

To Reinstall:

Make sure that assembly engages alignment pins.

6scan

6scanwmf

Figure 6-14

6-20 Removal and Replacement

Right Side Assemblies

Main Motor (M1)

The Main Motor is located adjacent to the Power Supply Unit. Other than

the covers, the Main Motor assembly does not require removal of any other

assemblies.

1Unplug the cable connector from the top of the Main Motor (Figure 6-15,

callout 1).

2Disconnect the Fuser cable from the Power Supply Unit (Figure 6-15,

callout 2).

3Remove (1) machine screw securing the right end of the cable tray, and drop

the cable tray downward out of the way (Figure 6-15, callout 3).

4Remove (2) large diameter, machine screws (Figure 6-15, callout 4).

5The Main Motor is now free. Lift it up and out of the printer, being careful

to clear any cables.

Main Motor

To Reinstall:

Make sure that the shaft meshes properly with the gear.

Leave screws loose until both are started, then tighten.

6mainmtr

6mainmtrwmf

Figure 6-15

6Removal &

Replacement

Removal and Replacement 6-21

Main Drive Assembly

The Main Drive assembly is located on the right side of the printer toward

the front.

1Remove (2) machine screws (Figure 6-16, callout 1).

2Unplug the Fuser connector from the Power Supply Unit (Figure 6-16,

callout 2).

3Lift out plastic cable shield and pull the cable tray out of the way

(Figure 6-16, callout 3).

4Carefully remove the e-clip from the registration clutch shaft (Figure 6-16,

callout 4).

5Remove (1) screw from the registration clutch alignment guide and remove

the guide (Figure 6-16, callout 5).

6Unplug the registration clutch connector (Figure 6-16, callout 6).

7Slide the registration clutch off the shaft and free its cable from the cable

clips.

Main Drive Assembly Removal (1 of 2)

(continued on next page)

6geartn1

6geartn1wmf

Figure 6-16

6-22 Removal and Replacement

8Remove (2) screws from the pickup clutch alignment guide (metal) and

remove the guide (Figure 6-17, callout 7).

9Unplug the pickup clutch connector and remove its cable from the clips

(Figure 6-17, callout 8).

10 Carefully remove the e-clip, washers and bushing from the shaft

(Figure 6-17, callout 9).

11 Unplug the upper end of the two connectors on the Main Drive assembly

(Figure 6-17, callout 10).

12 Remove (2) self-tapping screws securing the Upper Cover mounting bracket

and remove the bracket (Figure 6-17, callout 11).

13 Remove (4) self-tapping screws (Figure 6-17, callout 12).

14 While supporting the weight of the front door, release the Front Door

retainer arm by pushing out on the retainer arm clamp (Figure 6-17,

callout 13).

15 The Main Drive assembly is now free. Slide it outward from the printer.

Main Drive Assembly Removal (2 of 2)

To Reinstall:

When reinstalling the Main Drive assembly be certain to align the

alignment tabs with the notch on both the registration roller clutch and the

pickup roller clutch (Figure 6-17, callout 14).

NOTE The smaller diameter e-clip fits on the registration clutch.

6geartrn

6geartrnwmf

Figure 6-17

6Removal &

Replacement

Removal and Replacement 6-23

Drum Drive Assembly

The Drum Drive assembly is located directly behind the Main Drive

assembly.

1Remove the toner cartridge.

2Remove the Main Drive assembly (see Figure 6-16).

3Remove (3) self-tapping screws (Figure 6-18).

4Slide the assembly out of the printer.

Drum Drive Assembly

6drmgear

6drmgearwmf

Figure 6-18

6-24 Removal and Replacement

Front Door Assemblies

All Front Door assemblies can be removed without prior removal of any

covers or other components.

Transfer Roller Assembly

CAUTION Handle the Transfer Roller from the ends only. Do not touch the surface of

the Transfer Roller. Skin oils will affect its electrical characteristics,

resulting in poor image transfer.

1Grasp the shaft on either end of the Transfer Roller and lift upward to snap

out of the plastic retainer clip (Figure 6-19, callout 1).

2Lift the opposite end up and out of its retainer clip.

Transfer Roller Assembly

To Reinstall:

Be sure that the non-gear end of the shaft is to the right.

Also make sure that the alignment slot (plastic tab) on the underneath side

of the Transfer Roller slips over the locator pin (Figure 6-19, callout 2).

6tranrol

6tranrolwmf

Figure 6-19

6Removal &

Replacement

Removal and Replacement 6-25

Fusing Assembly

The Fusing assembly is located on the upper portion of the printer door.

CAUTION Do not remove (2) screws indicated in (Figure 6-20) by the null symbol ( ).

1Remove the Transfer Roller (see Figure 6-19).

2Remove (5) machine shoulder screws (Figure 6-20, callout 1).

3Pull outward on the edges of the Front Door assembly to release the shaft

(Figure 6-20, callout 2).

4Lift the Fusing assembly up and out.

Fusing Assembly

To Reinstall:

CAUTION Make sure that the Protection Plate (Figure 6-20, callout 3) is in place or

damage to the toner cartridge drum will occur.

6fuser

6fuserwmf

Figure 6-20

6-26 Removal and Replacement

Fuser Inlet Guide

WARNING The Fuser Inlet Guide contains the anti-static teeth. They are VERY sharp.

The Fuser Inlet Guide is located inside the Front Door assembly just

forward of the Transfer Roller.

NOTE Do not remove (2) screws indicated in (Figure 6-21) by the null symbol ( ).

1Remove the Transfer Roller (See Figure 6-19).

2Remove (3) screws (washers on two end screws only) (Figure 6-21, callout 1).

3Lift the rear edge of the guide to clear locating pins (Figure 6-21, callout 2).

Push to the front while tilting the front edge upward to clear retaining tabs.

Fuser Inlet Guide

To Reinstall:

1To determine initial placement, align the guide over the locating pins but do

not snap them into place.

2While tilting the front edge downward to engage the retaining tabs, push

the guide to the rear and downward to snap over the locating pins.

CAUTION The (2) washers must be in place (one on each outer screw) and the guide

seated, with retaining tabs located correctly, or paper jams will occur.

3Replace the (3) screws, ensuring that the (2) spring washers are in place.

6inguide

6inguidewmf

Figure 6-21

6Removal &

Replacement

Removal and Replacement 6-27

Paper Guide Plate Assembly

The Paper Guide Plate assembly contains the MP Tray pickup roller, motor,

and gear assemblies, and requires prior removal of the Transfer Roller and

Fusing assembly.

1Remove the Transfer Roller (see Figure 6-19).

2Remove the Fusing assembly, (see Figure 6-20).

3Carefully remove the small spring attached to the sensor assembly shown in

Figure 6-22, callout 1.

4From the left side of the assembly push on the retainer tab and lift off the

plastic cable shield (already removed in Figure 6-22).

5Unplug (1) connector shown in Figure 6-22, callout 2.

6Release the right door retainer arm by pushing out on the retainer arm

clamp (Figure 6-22, callout 3).

7Remove (4) self-tapping screws (Figure 6-22, callout 4).

8Remove (2) long, machine screws (Figure 6-22, callout 5).

9The Paper Guide Plate assembly is now free. Lift it upward and out of the

printer.

Paper Guide Plate Assembly

To Reinstall:

Align the two plastic alignment pins and pull the tension off the MP Guide

Plate assembly while lowering. Note that the assembly must be pressed

downward against the grounding springs before it is fully seated. Be sure

the sensor assembly spring is put back in place (Figure 6-22, callout 1).

6mpguide

6mpguidewmf

Figure 6-22

6-28 Removal and Replacement

MP Guide Plate

The MP Guide plate is located adjacent to the MP Pickup Roller assembly

and requires prior removal of the Paper Guide Plate assembly.

CAUTION The springs on each end of the plate are under tension. Be careful when

releasing.

1Using needle-nosed pliers, carefully release the tension on (2) springs

(Figure 6-23).

2Snap the left and right hinge retainers off the shafts on the bottom of the

assembly. Lift the MP Guide plate assembly up and out.

MP Guide Plate

6spring

6springwmf

Figure 6-23

6Removal &

Replacement

Removal and Replacement 6-29

MP Drive Gears

The MP Tray Drive Gears are housed within the Front Door assembly

directly under the Paper Guide Plate assembly.

NOTE The Drive Gear that is circled in Figure 6-24 requires prior removal of the

Fuser Door (see Figure 6-25, callout 2).

1Remove the Fusing Assembly and the Paper Guide Plate assembly (see

Figures 6-20 and 6-22).

2The gears are now free (except large gear— see note above).

MP Drive Gears

To Reinstall:

Pay close attention to the shaft locations and diameters when reinstalling

the gears.

6mpgears

6mpgearswmf

Figure 6-24

6-30 Removal and Replacement

Fuser Door

The Fuser Door is accessed with the printer front door closed and the MP

Tray open.

1Open the Fuser Door part way and press downward on the left end to

release (2) plastic retainer clips from the pins (see Figure 6-25, callout 1).

2Rotate upward to nearly closed, then slide the door assembly outward and

to the left to clear the gear on the right end (Figure 6-25, callout 2).

Fuser Door

To Reinstall:

When reinstalling, align the ring on the right end with the gear before

tilting the door into place (Figure 6-25, callout 2).

6fusdoor

6fusdoorwmf

Figure 6-25

6Removal &

Replacement

Removal and Replacement 6-31

MP Tray

To remove the MP Tray the printer front door must be closed and the MP

Tray open.

1Grasp right and left edges of the MP Tray and squeeze inward to release

retainer arms.

NOTE The plastic retainer arms are designed to pop out when snapped downward.

This requires a quick, firm snapping action to free the MP Tray.

2Slide tray outward off the hinge pins (see Figure 6-26).

MP Tray

To Reinstall:

Slide the hinge tabs over the plastic hinge pins and squeeze the retainer

clips inward forcefully while lifting the door upward to close.

6mptray

6mptraywmf

Figure 6-26

6-32 Removal and Replacement

Front Door Assembly

The Front Door assembly is removed as a single assembly and requires

prior removal of the printer covers and the MP Tray.

1Remove the MP Tray (see Figure 6-26).

2Remove (1) screw (Figure 6-27, callout 1) and remove Fuser Cable tray cover.

3Unplug the Fuser Cable (on the right side of the printer) and remove (2)

screws to release the cable tray from the printer chassis (see Figure 6-16,

callout 1).

4Remove the plastic cable shield (already off in photo) and unplug the

rearmost connector on the left side (Figure 6-27, callout 2).

5Gently pry outward on the clips to release the right and left Front Door

retainer arms (Figure 6-27, callout 3).

CAUTION The door assembly is heavy. Use caution when removing the hinge pins.

6Using needle nose pliers, pull the hinge pins outward while supporting the

weight of the Front Door assembly.

Front Door Assembly

To Reinstall:

Note that the hinge pins on the Front Door assembly are different. The

right side hinge pin is transparent in color and has a larger diameter head.

The hinge pin for the left side is opaque and has a smaller diameter head.

6papdoor

6papdoorwmf

Figure 6-27

6Removal &

Replacement

Removal and Replacement 6-33

Delivery Area Assemblies

Upper and Lower Delivery Roller Assemblies

The Delivery Roller assemblies are located on top of the printer chassis and

require removal of the Upper Cover to access.

1Remove the e-clip on the left end of the upper roller shaft (Figure 6-28,

callout 1).

2Slide the bushing toward the left to clear the bracket (Figure 6-28, callout 2).

3Lift the left end of the roller shaft upward slightly and slide the right

bushing to the right out of its retainer (Figure 6-28, callout 3).

4Lift the left end of the shaft the rest of the way up and out to clear the gear

on the right end.

5Push upward on small retainer tab located under the plate assembly

(Figure 6-28, callout 4) and slide the assembly to the left to clear its

alignment tabs.

Upper and Lower Delivery Roller Assemblies

6outroll

6outrollwmf

Figure 6-28

6-34 Removal and Replacement

Delivery Gear Assembly

The Delivery Gear assembly is located adjacent to the Upper Delivery

Rollers on the top right end of the printer, and requires previous removal of

the Upper Delivery Roller.

1Remove the Upper Delivery Roller (Figure 6-28).

2Remove (2) self-tapping screws securing the Upper Cover support bracket

(Figure 6-29, callout 1).

3Remove (2) machine screws (Figure 6-29, callout 2).

4Remove (1) self-tapping screw securing the foot of the output roller gears to

the printer chassis (Figure 6-29, callout 3).

5Pull the gear body outward to clear the retainer tab and alignment pins and

lift it up and out of the printer.

Delivery Gear Assembly

6outgear

6outgearwmf

Figure 6-29

6Removal &

Replacement

Removal and Replacement 6-35

Cartridge Guide

The Cartridge Guide is located directly under the toner cartridge and

behind the Registration Rollers. Note that the removal of this guide does

not require prior removal of the Upper Cover or any upper area assemblies.

1Using a stubby Phillips screwdriver, remove the two self-tapping screws

(Figure 6-30).

2Lift the front edge of the plate upward and slide it forward, out of the

printer. Note that the plate fits tightly within the opening.

Cartridge Guide

6papgde

6papgdewmf

Figure 6-30

6-36 Removal and Replacement

Cassette Pickup Roller Assembly

The Cassette Pickup Roller assembly is located under the Cartridge Guide.

The removal of this assembly requires prior removal of the top and right

side covers and will require a stubby Phillips screwdriver.

1Remove Paper Cassette and Cartridge Guide (Figure 6-30).

2From the right side of the printer, remove the pickup clutch alignment

guide (Figure 6-17, callouts 7 & 8). Unplug and free the clutch cable.

3Remove (2) small diameter, machine screws (Figure 6-31).

4Tilt the roller shaft upward from the left end and lift out, being careful not

to damage the cable.

Cassette Pickup Roller Assembly

To Reinstall:

1Thread the Pickup Roller Clutch Cable underneath the MP Drive Gears on

the right end while sliding the shaft into position.

CAUTION The next step is very important. If the clutch is not aligned properly, paper

will not feed.

2Align the tab on the pickup clutch alignment guide as shown previously in

Figure 6-17, callout 14.

3Align the plastic bearing retainers on each end of the shaft so the flat

portion is facing upward in proper position for the mounting screws.

6lowroll

6lowrollwmf

Figure 6-31

6Removal &

Replacement

Removal and Replacement 6-37

Separation Pad

The separation pad is located adjacent to the Registration Roller, and can be

removed without prior removal of any other parts.

CAUTION Removing the Separation Pad using a screwdriver is likely to damage it. Do

not attempt to remove the Separation Pad unless you have a new

replacement pad available.

To remove:

Use a small flat-blade screwdriver to pry firmly upward at either end of the

separation pad (Figure 6-32).

Separation Pad

6seppad

6seppadwmf

Figure 6-32

6-38 Removal and Replacement

Registration Roller

The Registration Roller requires a stubby magnetic screwdriver and prior

removal of the covers and toner cartridge guide. Removal of the left end of

the Registration Roller is described below. The right end is similar except

there is no plastic retainer tab or metal grounding tab.

1Lift the end of the plastic retainer tab upward and slide to the left to remove

(Figure 6-33, callout 1).

2Remove the self-tapping screw holding the spring retainer plate in place

(Figure 6-33, callout 2). The spring retaining plate is under tension and will

pull to the front as the screw is loosened. Be careful not to drop the screw

into the printer chassis.

3Carefully pull the roller retaining arm to the front while sliding the left end

of the roller out of its alignment slot (Figure 6-33, callout 3).

4Release the right end of the roller in a similar manner.

NOTE Refer to Figure 6-34 for reinstallation details.

Registration Roller (1 of 2)

(continued on next page)

6regroll

6regrollwmf

Figure 6-33

6Removal &

Replacement

Removal and Replacement 6-39

To Reinstall (Registration Roller):

NOTE Refer to Figure 6-34 while reinstalling.

1NOTE the placement of the thin metal grounding tab (see Figure 6-34, side

view) on the left retainer arm. It must slide underneath the bushing on the

rear Transfer Roller as you carefully ease the left retaining arm and left

Registration Roller bushing back into place.

2NOTE the position of the brass bushings on the ends of the Registration

Roller (see Figure 6-34, top view). The flat sides must be horizontal and

the flanges must be outside of the chassis slots.

3Make sure that the gear on the left end of the Registration Roller is properly

meshed before replacing the screws.

4Make sure that the spring retaining plate locating pin is inserted through

the hole in the chassis.

5When replacing the screws holding the spring retainer plates, rock the

plates toward the rear and hold them flat while inserting and starting the

screws. Make sure that the screws are fully tightened before proceeding.

Registration Roller (2 of 2)

TOP

VIEW

Printer

Chassis

Spring Retaining Plate

Self-tapping Screw

Spring

Rear Metal Roller

Registration

Roller

(Rubber)

Roller Retaining Arm

Brass Bushings

CROSS

SECTION

Self-tapping Screw

Spring Retaining Plate

Spring

Roller

Retaining

Arm

Registration Roller

Rear Metal Roller

Metal Grounding Finger

Printer Chassis Locating Pin

6regill

Figure 6-34

6-40 Removal and Replacement

Registration Roller Guide Plate

The Registration Roller Guide Plate is a metal assembly located directly

under the Registration Roller and requires prior removal of the Registration

Roller.

1Remove the Registration Roller (see Figure 6-33).

2Remove (2) self-tapping screws (Figure 6-35).

3Lift the Registration Roller Guide Plate up and out of the printer.

Registration Roller Guide Plate

To Reinstall:

Be careful not to damage the two grounding tabs on the left end of the

Guide Plate as you insert it into place.

6seppad

6seppadwmf

Figure 6-35

6Removal &

Replacement

Removal and Replacement 6-41

Anti-Static Brush

The Anti-Static Brush is located directly under the Registration Roller

Guide Plate.

1Remove the Registration Roller and Guide Plate (see Figure 6-35).

2Remove (1) machine grounding screw with star washer (Figure 6-36,

callout 1).

3Lift the sheet metal grounding plate out (Figure 6-36, callout 2).

4Lift the Anti-Static Brush up and out of the printer (Figure 6-36, callout 3).

Anti-Static Brush

6antibr

6antibrwmf

Figure 6-36

6-42 Removal and Replacement

Paper Guide

The Paper Guide is a plastic plate located directly under the Registration

Roller assembly.

1Remove the Registration Roller and Guide Plate (see Figures 6-33 and

6-35).

2Remove (3) self-tapping screws (Figure 6-37).

3Carefully lift the Paper Guide up and out of the printer.

Paper Guide

6defgde

6defgdewmf

Figure 6-37

6Removal &

Replacement

Removal and Replacement 6-43

Bottom Assemblies

Foot Assemblies

The Left Side Foot removal procedure is described below. The Right Side

Foot removal is similar.

CAUTION If the left side cover is in place, do not rest the printer on its left side, as this

will damage the ventilation grill.

1Remove lower paper cassette and turn the printer on its side.

2Remove connector cover (if installed) (see Figure 6-38, callout 1).

3Remove the Optional Lower Cassette connector by depressing the retainer

ears inward (see Figure 6-38, callout 2).

4Remove (3) machine screws (see Figure 6-38, callout 3).

5Carefully pull the foot straight out while pushing the sensor tabs out of the

way (see Figure 6-38, callout 4).

Left Side Foot

To Reinstall:

Install the Optional Lower Cassette connector before reinstalling Foot

assemblies.

6footcap

6footcapwmf

Figure 6-38

6-44 Removal and Replacement

Troubleshooting

Chapter Contents

Preliminary Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . 7-3

Paper Path and Components . . . . . . . . . . . . . . . . . . . . . . . . 7-4

Printer Message Troubleshooting . . . . . . . . . . . . . . . . . . . . . 7-5

Priority of Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5

Printer Status Messages . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

Service and Error Messages . . . . . . . . . . . . . . . . . . . . . . 7-11

Clearable Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-15

Image Formation Troubleshooting . . . . . . . . . . . . . . . . . . . . . 7-16

Check the Toner Cartridge . . . . . . . . . . . . . . . . . . . . . . . 7-16

Faulty Image Examples . . . . . . . . . . . . . . . . . . . . . . . . . 7-16

Troubleshooting Checks . . . . . . . . . . . . . . . . . . . . . . . . . . 7-31

Engine Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-31

Engine Test Button Location . . . . . . . . . . . . . . . . . . . . . . 7-31

Printing an Engine Test . . . . . . . . . . . . . . . . . . . . . . . . . 7-31

Half Self Test Functional Check . . . . . . . . . . . . . . . . . . . . . 7-32

Drum Rotation Functional Check . . . . . . . . . . . . . . . . . . . . 7-33

High-Voltage Power Supply Check . . . . . . . . . . . . . . . . . . . 7-34

Paper Curl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-35

Troubleshooting Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-36

Repetitive Image Defect Ruler . . . . . . . . . . . . . . . . . . . . . . 7-36

Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-37

Troubleshooting 7-1

7-2 Troubleshooting

Preliminary Troubleshooting

Step Description Corrective Action

1. Disconnect printer from network (if

applicable). n/a

2. Ensure that toner cartridge is

installed, front door is closed, and

AC power is applied.

n/a

3. Verify power distribution by

listening to fans, Main Motor, and

Laser/Scanner Motor.

Troubleshoot power supply

distribution system.

• Check all connectors

• Check CB101 in power

supply unit

• Check F101 in power

supply unit

4. Check for control panel messages. Refer to “Printer Message

Troubleshooting” later in this

chapter.

5. Perform Engine Test. If there is an image problem, see

“Image Formation Troubleshooting”

later in this chapter.

If no page is printed, troubleshoot

as a DC Controller problem.

6. Perform Control Panel Self Test. If there is an image problem, refer

to “Image Formation

Troubleshooting” later in this

chapter.

If no page is printed, troubleshoot

as a Formatter problem.

7. Verify proper software drivers have

been installed. Install drivers.

8. Connect printer to network (if

applicable) and verify network

operation.

Contact network administrator for

assistance.

Troubleshooting

Troubleshooting 7-3

Paper Path and Components

Optional Lower Cassette

Lower Cassette Pickup Rollers

Paper Out Sensor

Lower Cassette Exit Sensor

7PAPPATH

Figure 7-1 Paper Path and Components

7-4 Troubleshooting

Printer Message Troubleshooting

The control panel alphanumeric display provides the following information:

•Status Messages (refer to Table 7-1)

•Service and Error Messages (refer to Table 7-2)

•Clearable Warnings (refer to Table 7-3)

NOTE Before troubleshooting the printer, cycle the power to the printer to see if

the error persists.

Priority of Errors

Each error has a priority in relation to the others. If there is more than one

error condition at the same time, the highest priority error will be

displayed. The priority of errors is:

1Service Errors

2Door Open/No Toner Cartridge

3Paper Jam

4Paper Out

5Memory Error

6Manual Feed

Troubleshooting

Troubleshooting 7-5

Printer Status Messages

The following table lists printer messages and their meanings and describes

recommended actions. Messages that begin with a number are listed first,

followed by messages that begin with a letter.

Message Description Recommended Action

Numeric Listings

[Blank Display]

Nothing displayed at power-up. Control panel

display remains blank. If fans are functional on power-up:

1. Verify the input power, then check that CB101

and F101 are not open.

2. Check and reseat connector from the Control

Panel to the Formatter PCA.

3. Remove any interface cables to the host.

4. Print an Engine Test to determine if the print

engine is functional. If so, replace the Control

Panel, then the Formatter PCA.

00 READY The default ready message. The printer is

ready to use. No action required.

00 POWERSAVE Printer is in Power Save mode. In Power

Save mode all control panel keys operate

normally.

Press any control panel key to take printer out of

Power Save mode. Receipt of data or an error

condition will also take the printer out of Power

Save mode. The display will read 02 WARMING

UP, and the job will print when the fuser has

warmed.

00 OFFLINE Printer is off line and cannot receive data. Press [On Line].

02 WARMING UP The printer is warming up and is not ready to

accept data. Wait until the printer signals ready. If the message

remains on continuously:

1. Disconnect interface cable from the printer,

power off, then on. Problem may be caused by

connecting the parallel cable to a serial port, or a

bad host interface.

2. Check if Fusing Assembly is warming up. If not,

replace the Fusing Assembly.

3. Replace the DC Controller PCA.

4. Replace the Power Supply Unit.

5. Replace the Formatter PCA.

04 SELF TEST Printing a continuous self test. Press [On Line] or [Shift] + [Continue] to stop the

test. Several more pages may print.

05 SELF TEST Printer self test in process (non-printing). No action required.

06 PRINTING TEST Printing a self test. No action required.

06 TYPEFACE LIST Printing a Typeface List. (Note that

PCL/PostScript formats are different.) No action required.

Table 7-1 Status Messages

7-6 Troubleshooting

Message Description Recommended Action

06 DEMO PAGE Printing a Demonstration Page. (Note that

PCL/PostScript formats are different.) No action required.

06 CONFIG PAGE Printing a Configuration Page. No action required.

07 RESET Follows a control panel [Shift] + [Reset]

selection. The printer returns all Printing,

PCL, Job, and installed personality (PS, etc.)

Menu items to user-selected settings and

clears buffered page data, clears temporary

soft fonts, and clears temporary macros.

No action required unless the printer is receiving

data. You may have to press [Shift] + [Reset]

several times to prevent printing unwanted pages.

08 COLD RESET The printer returns all Printing, PCL, Job,

Config, Mem Config, Parallel, MIO (if

installed), and the installed personality (PCL,

PS, etc.) Menu settings to their factory default

configurations, except for page count, MP Tray

size, and display language.

Reconfigure the printer and MIO. When you install

an MIO card, to reinitialize the control panel you

may need to perform a cold reset. (Note: In a

shared environment, this task should only be

performed by the system administrator.) To

perform a cold reset, hold down [On Line] while

switching the printer ON until 08 COLD RESET

appears in the display.

09 MENU RESET Clears the page buffer, removes temporary

data such as downloaded fonts, and sets

user-selected defaults (such as Power Save)

to their factory defaults.

To access, press [Shift] + [Reset] for about 10

seconds until RESET=MENU appears, then use

the [+] key to select the kind of reset you want.

09 RST ACTIVE I/O Clears the page buffer and removes

temporary data such as downloaded fonts,

but affects the active I/O port only.

Same as 09 MENU RESET above.

09 RESET ALL I/O Clears the page buffer and removes

temporary data such as downloaded fonts,

but affects all I/O ports.

Same as 09 MENU RESET above.

10 RESET TO SAVE You changed menu items while data,

temporary fonts, or temporary macros were

present in printer memory or while the printer

was in the middle of a job.

Reset the printer. There are two choices:

1. To immediately activate the selections, press

[Shift] + [Reset] until 07 RESET appears (you will

delete temporary macros, fonts, and buffered data).

2. Press [Shift] + [Continue] or [On Line]. Your

changes will remain recorded in the menu (marked

with an *), but will not become active until the printer

is reset or the printer detects the end of the job.

Table 7-1 Status Messages — continued

Troubleshooting

Troubleshooting 7-7

Message Description Recommended Action

12 PRINTER OPEN The front door is not firmly closed, or the

toner cartridge is not installed correctly. Make sure the toner cartridge is fully

seated and the front door is firmly

closed. If the message persists:

1. With the front door open, check

that the sensor flag for Front Door

Open Sensor (PS402) is not broken or

stuck. (PS402 is located on the

small Front Door Unit Terminal PCA

on the front door under the Transfer

Roller.)

2. Check functionality of the toner cartridge

microswitch (SW501) on the High Voltage PCA

(activated by metal tab in the rear wall of the toner

cartridge cavity, adjacent to the high voltage contacts).

3. Replace the DC Controller PCA.

13 PAPER JAM Paper is jammed in the paper path, or a paper

jam sensor may be stuck, causing a false

paper jam warning.

The jam rate specifications are:

MP TRAY: 1 per 6000

CASSETTE: 1 per 4000

NOTE: Many variables can affect actual

frequency of jams. The above

specifications are intended as a general

guideline only.

Remove jammed paper

(see “Clearing Paper

Jams” in the

User’s Manual

). The front door must

be opened and closed again before pressing

[On Line] to resume.

The following are the most likely causes of

repeated paper jam problems:

1. Paper cassettes not correctly loaded (refer to

the

User’s Manual

2. Print media does not meet specs or is in poor

condition (refer to the

Paper Specifications Guide

3. The printer needs cleaning (refer to Chapter 4).

4. Pickup, Registration or Output rollers

contaminated, worn or damaged.

5. Toner cartridge gears are worn or damaged (try

a different cartridge).

6. Other paper path gears worn or damaged.

If no paper jams are found but the message

persists (false paper jams):

1. Check paper jam sensor flags for sticking or

damage. Paper movement is monitored by (2)

paper sensors. PS 501, the Pickup Unit Sensor is

located on the High Voltage Power Supply PCA

high voltage power supply PCA;pickup unit sensor.

PS401 is located on the small front door Unit

Terminal PCA on the front door under the Fusing

Assembly (remove the Fusing Assembly to see).

2. Replace the DC Controller PCA.

Table 7-1 Status Messages — continued

7-8 Troubleshooting

Message Description Recommended Action

14 NO TONER CART The toner cartridge is missing or not installed

correctly. Insert a toner cartridge or make sure the cartridge

is fully seated and the front door is fully closed,

then press [On Line] to resume.

If the error persists:

1. Check functionality of the toner cartridge

microswitch (SW501) on the High Voltage PCA

(activated by metal tab in the rear wall of the toner

cartridge cavity, adjacent to the high voltage

contacts).

2. Check that the sensor flag for Front Door Open

Sensor (PS402) is not broken or stuck. (PS402 is

located on the small front door Unit Terminal PCA on

the front door under the Transfer Roller.)

3. Replace the DC Controller PCA.

16 TONER LOW The toner cartridge is running out of toner. If

TONER LOW=CONT* is displayed, the printer

will continue printing; if TONER LOW=STOP,

the printer will stop printing and go off line.

Shake the toner cartridge or replace it. If TONER

LOW=STOP, press [On Line] or [Shift] + [Continue]

to allow printing to continue (print quality will

gradually degrade).

If the message persists:

1. Check the contact points on the left end of the

toner cartridge and inside the toner cartridge cavity.

(The Toner Low contact is the lower of the three.)

2. Replace the High Voltage PCA.

18 MIO INIT The MIO card is initializing. This is a status

message; during initialization the MIO is not

active, but since the printer supports I/O

switching, the printer remains on line.

No action required. Display will clear

automatically (this may take up to a minute,

depending on the card). However, if the message

remains after 5 minutes a problem may exist in the

network card or host. Consult the network

documentation that came with the MIO card.

18 MIO NOT READY The MIO card is not ready. The Bi-Tronics

parallel port will continue to operate normally. If the printer MIO card is operating correctly and

communicating with the network, this message will

disappear after approximately one minute and no

action is required. If the MIO card is unable to

communicate with the network, this message will

remain for five minutes and then go away. In this

case the printer is not communicating with the

network (even though the message is no longer

present). The problem may be a bad MIO card,

bad cable/connection on the network, or a

network problem. Consult the network

documentation that came with the MIO card.

Table 7-1 Status Messages — continued

Troubleshooting

Troubleshooting 7-9

Message Description Recommended Action

Alphabetical Listings

FS DISK FAILURE Printer detected a disk failure. Printer operation may continue, provided access

to the disk is not required. (The printer will

substitute fonts if necessary.)

Press [Shift] + [Continue], to continue printing

when this error occurs.

Switch the printer OFF and then back ON. If the

error continues:

1. Remove and reseat the disk drive, ensuring that

the connector pins are fully seated in the

connector on the Formatter PCA.

2. Run a control panel self test to verify presence

of the disk drive (look for the text, “Installed

options: Disk”).

3. If the error persists, replace the disk drive.

MENUS LOCKED The network administrator has locked out

access to the control panel menu system,

except for the Test Menu and MP Tray size.

See the network or printer administrator.

ME FEED

envelope size

The printer requested that an envelope be

manually fed. Envelope size may be: COM10,

MONARCH, DL, C5, B5, JPOST, or JPOSTD.

Insert the appropriate envelope size into the MP

Tray and press [On Line] or [Shift] + [Continue] if

MP Tray is not in “first” mode to print from the

envelope feeder.

MF FEED

paper size

The printer requested that media be manually

fed. Paper size may be: LETTER, LEGAL, A4,

EXEC, 11x17, A3, JIS B4, JIS B5, CUSTOM.

Insert the appropriate paper size into the MP Tray

and press [On Line]; or, press [Shift] + [Continue]

(if the MP Tray is not in “first” mode).

MP LOAD,

PC LOAD, or

LC LOAD

paper size,

envelope size

The printer received a request for a paper or

envelope size not available in the printer. MP LOAD: Load MP Tray with the requested

media. If the size is not selected in the printer

control panel, use the [MP[Paper[Size] key to enter

the requested size, or press [Shift] + [Continue] to

draw the requested size from another source, if

available.

Note: If MP LOAD remains in the display, you may

have to clear the buffer by resetting the printer.

Press [Shift] + [Reset].

PC or LC LOAD: Load the Paper Cassette or

Lower Cassette with the requested media. Also,

the back paper guide in the cassette must be set

to the correct media size (the printer determines

the media size by reading the location of this

guide).

Table 7-1 Status Messages — continued

7-10 Troubleshooting

Service and Error Messages

Message Description Recommended Action

20 MEM OVERFLOW The printer received more data from the

computer than can fit in its available user

memory.

Press [Shift] + [Continue] to print the transferred

data (data loss may result), then: make more

memory available in the printer by removing some

fonts, macros, or any other data from memory; or,

simplify the page sent to the printer; or, install

additional memory. (Note, if AUTO CONT=ON the

printer will automatically continue printing when

this error occurs).

21 PRINT OVERRUN The data (dense text, rules, raster or vector

graphics) sent to the printer was too complex. Press [Shift] + [Continue] to resume printing. (Note,

if AUTO CONT=ON the printer will automatically

continue printing when this error occurs). Some

data loss may occur. Try to simplify the print job. If

you must print the job “as is,” set

PAGEPROTCT=ON in the Job Menu, print the job,

then return PAGEPROTCT=AUTO. Do not leave

PAGEPROTCT set to ON as it will

degrade

performance.

22 PAR IO ERROR,

22 MIO ERROR

For Bi-Tronics parallel (PAR) configuration,

the computer and printer are not

communicating because of improper signal

protocols. This is an I/O buffer overrun error.

Parallel Configuration: may mean a loose

cable connection or a bad or poor quality

cable.

MIO Configuration: This is an I/O buffer

overrun error.

Press [Shift] + [Continue] to clear the error

message (data will be lost). If the error continues:

Parallel Configuration: check for loose cable; use a

high-quality cable (HP 24542D or equivalent).

(Note: some non-HP parallel cables may be

missing pin connections.)

If the printer is using an I/O other than the

Bi-Tronics parallel I/O, see the manual for that

device.

40 MIO ERROR Indicates an abnormal connection break

occurred while transferring data from the

computer.

Press [Shift] + [Continue] to clear the error

message. If the printer is using an I/O other than

the Bi-Tronics parallel I/O, see the manual for that

device.

41.[X] ERROR

X=1, 2, 4, or 5

A temporary printing error occurred. Remove the page from the output bin and press

[Shift] + [Continue]. The page containing the error

will automatically be reprinted. (Note, if AUTO

CONT=ON the printer will automatically continue

printing when this error occurs.)

41.3 PAPER ERROR The wrong size paper was fed from the MP

Tray or the printer picked two sheets of paper

at once.

Ensure that the paper is within the specifications

If the page jammed, remove the jam.

Press

[Shift] + [Continue] and the page

containing the error will automatically be reprinted.

NOTE: If AUTO CONT=ON the printer will

automatically continue printing when this error

occurs. Refer to the error 13 PAPER JAM earlier in

this table for more information.

Table 7-2 Service and Error Messages

Troubleshooting

Troubleshooting 7-11

Message Description Recommended Action

50 SERVICE Fuser malfunction, resulting from either an

overheating or underheating condition. Switch the printer OFF

for at least 20 minutes

and

then back ON.

If the error continues:

1. Verify that the Fusing Assembly is installed

correctly and is fully seated into its connectors (no

bent pins or pins outside their receptacles).

2. Reseat or replace the fuser cable assembly.

51 ERROR Beam detect malfunction. Press [Shift] + [Continue] to resume operation.

(Note, if AUTO CONT=ON the printer will

automatically continue printing when this error

occurs.) If error persists:

1. Check cable from DC Controller to

Laser/Scanner Assembly.

2. Replace Laser/Scanner Assembly.

3. Replace DC Controller PCA.

52 SERVICE Scanner malfunction. Switch the printer OFF and then back ON. If the

error continues:

1. Check cable from DC Controller to

Laser/Scanner Assembly.

2. Replace Laser/Scanner Assembly.

3. Replace DC Controller PCA.

53.XY.ZZ ERROR SIMM memory error:

X (Hardware Type):

0: ROM

1: RAM

Y (Hardware Device):

0: Internal Memory

1: SIMM Slot 1

2: SIMM Slot 2

3: SIMM Slot 3

4: SIMM Slot 4

ZZ (Error Number):

0: Unsupported memory

1: Unrecognized memory

2: Unsupported memory size

3: Failed RAM test

4: Exceeded maximum RAM size

5: Exceeded maximum ROM size

6: Invalid SIMM speed

7: SIMM reporting information

incorrectly

8: SIMM RAM parity error

9: SIMM ROM needs to be

mapped to an unsupported

address

10: SIMM address conflict

11: ROM out of bounds

12: Could not make temporary

mapping

Make sure the SIMM board is installed correctly.

Replace the SIMM that caused the error.

NOTE: If no replacement SIMM is available, press

[Shift] + [Continue] to continue. The SIMM that

caused the error will not be configured. If the

SIMM device has more than one bank of memory,

the good banks will be configured.

Table 7-2 Service and Error Messages — continued

7-12 Troubleshooting

Message Description Recommended Action

55 ERROR Communication error between DC Controller

and Formatter PCA. Switch the printer OFF and then back ON. If the

error continues:

1. Check cable from DC Controller to

Laser/Scanner Assembly.

2. Replace Laser/Scanner Assembly.

3. Replace DC Controller PCA.

57 SERVICE Main motor failure. Switch the printer OFF and then back ON. If the

error continues:

1. Check cabling between Main Motor and DC

Controller PCA.

2. Replace the Main Motor.

3. Replace the DC Controller.

58.[x] SERVICE Fan motor failure.

x = 1 — FM1

2 — FM2

3 — FM3

Switch the printer OFF and then back ON. If the

error continues:

1. Check cabling between fan motor(s) and DC

Controller PCA.

2. Replace the faulty fan motor.

3. Replace the DC Controller.

61.[x] SERVICE

X=0 - 4

The printer encountered a parity error when

accessing the RAM

memory SIMM in slot “X”.

If X=0, the slot with the defective SIMM could

not be determined.

Switch the printer OFF and then ON. If the error is

still present:

1. Verify that the SIMM board is correctly installed.

2. Switch the printer OFF and remove the SIMM

board. Switch the printer back ON. If the error

message does not appear, replace the faulty

SIMM.

3. If the message remains, repeat the process for

each remaining SIMM to isolate.

4. If message remains with no SIMMs present,

replace the Formatter PCA.

62.[x] SERVICE

X=0 - 6

The printer identified a problem while

checking its memory

. “X” refers to the device

the printer was checking when it encountered

the error.

0: Internal Memory

1–4: SIMM Slot

6: Cache

Switch the printer OFF and then ON. If the error is

still present:

1. Verify that the SIMM board is correctly installed.

2. Switch the printer OFF and remove the SIMM

board. Switch the printer back ON. If the error

message does not appear, replace the faulty

SIMM.

3. If the message remains, repeat the process for

each remaining SIMM to isolate.

4. If message remains with no SIMMs present,

replace the Formatter PCA.

63 through 67

SERVICE Internal RAM, scan buffer, Dynamic RAM

controller, or miscellaneous interface

hardware error.

Switch the printer OFF, then back ON. If the error

persists, replace the Formatter PCA.

68 ERROR Nonvolatile memory (NVRAM) error. Press [Shift] + [Continue], then check the control

panel settings for changes (print a self test).

68 SERVICE

or 68

READY/SERVICE

The nonvolatile memory (NVRAM) is full. Press [Shift] + [Continue] ; the 00 READY message

will be replaced by 68 READY/SERVICE until the

condition is cleared. If you switch the printer OFF,

then ON, you may lose settings. (To check settings,

print a self test). If the error persists, replace the

Formatter PCA.

Table 7-2 Service and Error Messages — continued

Troubleshooting

Troubleshooting 7-13

Message Description Recommended Action

70 or 71 ERROR A language (personality) SIMM problem was

identified. SIMM not compatible with

firmware.

Remove or replace the language (personality)

SIMM.

79 SERVICE [xxxx] A Formatter firmware error occurred. The

numbers [xxxx] following the error indicate

the specific kind of error.

Write the error message and the four digit code

down before continuing. Switch the printer OFF,

then back ON.

1. Remove SIMMs one at a time and recycle power

to isolate.

2. If the problem persists, and the printer has an

MIO card installed, remove the MIO and try using

the parallel interface, if possible.

3. Replace the Formatter PCA. (Include the error

message code with the defective PCA and return

for evaluation.)

80 SERVICE [xxxx] The printer detected a problem in the MIO

card. The numbers [xxxx] following the error

message indicate the specific type of error.

Write the error message and the four digit code

down before continuing. Switch the printer OFF,

then back ON.

If the error persists:

1. Remove and reseat the MIO card.

2. Check for bent pins on the MIO connection.

3. Replace the MIO card.

4. Replace the Formatter PCA.

(Include the error message and code with the

defective PCA and return for evaluation.)

Table 7-2 Service and Error Messages — continued

7-14 Troubleshooting

Clearable Warnings

A clearable warning message indicates that the printer changed settings in

order to complete the print job. A clearable warning usually occurs when a

transient condition, such as an invalid or uninstalled personality, or lack of

memory causes a temporary change. A number of clearable warnings can

appear while printing a job. The printer will remain on line while the

message is displayed. Clear the message by pressing [Shift] + [Continue]. It is

possible to eliminate the need to respond to clearable warning messages

(see “Configuration Menu” in Chapter 3).

Message Meaning

W0 JOB 600/A4 Because the job parameters of print resolution and page protection could not be met with the

available memory, the job was printed at a print resolution of 600 dpi but reduced to a page protect

setting of A4.

W1 IMAGE ADAPT The printer received a graphics print file that was too complex to print at the requested print

resolution. Check the printout for loss of data or print quality. NOTE: if

this warning occurs frequently, install additional memory.

W2 INVALID PERS The job was not printed because you requested a personality, such as PostScript, that is not installed.

Install the personality that matches the personality of the files you are sending, together with enough

memory to support that personality.

W3 JOB ABORTED The printer was forced to abort the print job because there is not enough installed memory to

support the current printer language (PostScript, for example). Install

additional memory.

WD DISK NOT INIT The printer was unable to read the root directory from the disk. Use the disk initialization utility to

initialize the disk.

W8 JOB 600/OFF Because the job parameters of print resolution and page protection could not be met with the

available memory, the job was printed at a print resolution of 600 dpi and page protect was turned

OFF.

W9 JOB 600/LTR Because the job parameters of print resolution and page protection could not be met with the

available memory, the job was printed at a print resolution of 600 dpi but reduced to a page protect

setting of LETTER.

WM JOB 300 The job was printed at 300 dpi. NOTE: if this warning occurs frequently, install additional memory.

WM JOB 600/A3 Because the job parameters of print resolution and page protection could not be met with the

available memory, the job was printed at a print resolution of 600 dpi but reduced to a page protect

setting of A3.

WM JOB 600/LGL Because the job parameters of print resolution and page protection could not be met with the

available memory, the job was printed at a print resolution of 600 dpi but reduced to a page protect

setting of LEGAL.

WM MEM CNFIG N/A The printer did not have enough memory when switched ON to support the previous

settings for I/O Buffering and/or Resource Saving, probably because you

removed a memory SIMM, or added a new personality SIMM. (You can check

settings by printing a self test.)

WM CHK MEM CNFIG I/O Buffering and/or Resource Saving settings were altered when the printer was

switched on because the printer did not have enough memory. This usually

occurs after memory has been removed from the printer. (You can check

settings by printing a self test.) Adding additional memory should correct

this problem.

Table 7-3 Clearable Warning Messages

Troubleshooting

Troubleshooting 7-15

Image Formation Troubleshooting

Check the Toner Cartridge

Image formation defects are many times the result of toner cartridge

problems. If there is any doubt, always replace the toner cartridge before

troubleshooting image defects.

Use the following check list to ensure that the toner cartridge is still

operable.

•Inspect the toner cartridge for remaining toner.

•Check the expiration date of the toner cartridge (stamped on the cartridge

box).

•Check the toner cartridge to see if it has been disassembled or refilled.

•Ensure that the toner cartridge is seated properly in the cavity.

•Inspect the cartridge for leaking toner through worn seals. (If the drum has

been manually rotated it may have caused internal damage and toner spills

may result).

•Check the surface of the photosensitive drum in the cartridge to see if it has

been damaged or scratched. Touching the drum will contaminate the

photosensitive surface and may cause spotting and defects during printing.

•White areas on the page may indicate that the drum has been exposed to

light for too long. If white areas appear, stop the printer and wait a few

minutes. This process should eliminate most defective images. If not, the

toner cartridge may be placed in a dark environment for several days, which

may restore some life to the drum.

Faulty Image Examples

This section illustrates some image defects and their possible causes. Since

there are many variables in the printing process, it is possible to encounter

image defects that are not illustrated in the following illustrations. If you

find a defect that is not illustrated, record the probable cause along with the

printing environmental conditions and save a copy of the defect for future

reference.

Each example is followed by a table that lists in order the probable causes of

the image defect.

7-16 Troubleshooting

BLANK PAGE

(see Table 7-4, page 7-21) BLACK PAGE

(see Table 7-5, page 7-22)

FADED PRINT

(see Table 7-6, page 7-23) WHITE STRIPES (parallel to path)

(see Table 7-7, page 7-24)

Troubleshooting

Troubleshooting 7-17

BLACK LINES (perpendicular to path)

(see Table 7-8, page 7-24) BLACK LINES (parallel to path)

(see Table 7-9, page 7-25)

REPETITIVE DEFECTS

(see Table 7-10, page 7-25) BUBBLE PRINT

(see Table 7-11, page 7-26)

7-18 Troubleshooting

DROPOUT

(see Table 7-12, page 7-26) CHARACTER VOIDS

(see Table 7-13, page 7-27)

BACKGROUND SCATTER

(or Leading Edge Halo)

(see Table 7-15, page 7-28)

PARTIAL BLANK PAGE

(see Table 7-14, page 7-28)

Troubleshooting

Troubleshooting 7-19

FAULTY REGISTRATION

(see Table 7-16, page 7-29) SMEARED PRINT

(see Table 7-17, page 7-30)

COMPRESSED PRINT

(see Table 7-18, page 7-30) IMAGE SKEW

(see Table 7-19, page 7-30)

7-20 Troubleshooting

Possible Cause Recommended Action

OCCASIONAL BLANK PAGES:

1. Software Configuration. Make sure the application software is not sending

incorrect page length requests, or extra page

eject commands.

2. Network Configuration. Some sharing devices

on networks may generate a blank page as a

separator.

Check with the Network Administrator.

3. Multiple Feeds. The printer may be feeding

two or more pages at once because the paper is

difficult to separate.

Remove the paper from the paper cassette and fan

the paper edges to separate the pages (see

LaserJet Printer Family Paper Specifications Guide)

ALL PAGES BLANK:

1. Sealing tape left in toner cartridge. Remove the sealing tape.

2. Empty or defective toner cartridge. 1. If unsure, weigh the cartridge:

Full weight = 2000 grams (70.6 oz)

Empty weight = 1600 grams (56.5 oz)

NOTE: Some toner may reside in the waste toner

cavity, affecting the weight of the cartridge.

2. Perform the “Drum Rotation Functional Check”

described later in this chapter or try a known good

toner cartridge. Replace the toner cartridge if

necessary.

3. Defective or contaminated Transfer Roller.

Without a functional Transfer Roller, toner cannot

be pulled from the photosensitive drum to the

paper.

Check roller installation and contact. Perform the

“Half Self Test Functional Check” described later

in this chapter. If there is an image on the drum,

but not on paper, replace the Transfer Roller.

4. High voltage connector springs are dirty or

defective. The high voltage connectors are

mounted on the High Voltage Power Supply PCA

and protrude into the toner cartridge cavity.

Check the springs for functionality. Clean if dirty,

replace if defective or missing.

5. Laser/Scanner door not opening properly. 1. Remove and re-seat the toner cartridge.

2. Check the Laser/Scanner shutter door for

proper operation. If defective, replace the

Laser/Scanner Assembly.

6. High Voltage Power Supply is defective. Replace the High Voltage Power Supply PCA.

7. DC Controller PCA is defective. The DC

Controller supplies the proper voltage to the High

Voltage Power Supply PCA.

Replace the DC Controller PCA.

Table 7-4 Blank (White) Page

Troubleshooting

Troubleshooting 7-21

Possible Cause Recommended Action

1. Defective toner cartridge. Replace the toner cartridge.

2. Light is leaking into the printer. Ensure all covers are in place.

3. High voltage contact springs are dirty or

defective. The high voltage contacts are

mounted on the High Voltage Power Supply PCA

and protrude into the toner cartridge cavity.

Inspect and clean the high voltage contacts. If

damaged, replace the High Voltage Power

Supply PCA.

4. High voltage power supply circuit is defective

(not supplying the correct negative voltage). Replace the High Voltage Power Supply PCA.

5. DC Controller PCA is defective. If the DC

Controller turns ON the laser beam continuously,

the entire surface of the Photosensitive drum is

neutralized causing a completely black page.

Replace the DC Controller PCA.

6. Laser/Scanner Assembly is faulty (turning

laser on continuously). Replace the Laser/Scanner Assembly.

7. Connectors between the Laser/Scanner unit

and DC Controller are not seated properly or are

defective.

Inspect and reseat the connectors. Replace

cables as necessary.

Table 7-5 Black Page

7-22 Troubleshooting

Possible Cause Recommended Action

1. Toner supply is low. Shake the cartridge gently to redistribute the

toner, or replace the cartridge.

2. Print Density is set incorrectly. Change to a darker setting and retry printing.

3. EconoMode is on. EconoMode saves toner by

reducing the dot density. This may appear to be

a print quality problem in some cases.

Turn EconoMode off.

4. Paper does not meet specs. The moisture

content, conductivity, or surface finish may not

work correctly with the electrophotographic

process.

Try a different paper lot (see

HP LaserJet Printer

Family Paper Specifications Guide

5. Transfer Roller is defective or incorrectly

installed. If the transfer roller loses conductivity, it

cannot effectively pull toner from the drum to the

paper.

Inspect the Transfer Roller for proper installation

and contact. If the Transfer Roller is damaged,

replace it.

6. Laser/Scanner door is not opening properly. 1. Remove and re-seat the toner cartridge.

2. Check the Laser/Scanner shutter door for

proper operation. If defective, replace the

Laser/Scanner Assembly.

7. High voltage contact springs are dirty or

defective. The high voltage contacts are

mounted on the High Voltage Power Supply PCA

and protrude into the toner cartridge cavity.

Check the contacts for functionality. If dirty, clean

using alcohol; if damaged, replace the High

Voltage Power Supply PCA.

8. High Voltage Power Supply PCA is defective. Replace the High Voltage Power Supply PCA.

9. DC Controller PCA is defective. The DC

Controller supplies the proper voltage to the High

Voltage Power Supply PCA.

Replace the DC Controller PCA.

Table 7-6 Faded Print

Troubleshooting

Troubleshooting 7-23

Possible Cause Recommended Action

1. Toner cartridge is nearly empty. This can

cause uneven toner distribution. Remove the toner cartridge and shake it gently.

The cartridge will soon require replacement.

2. Toner cartridge has been exposed to too much

light. Store the toner cartridge in a darkened

environment for several days. This may restore

the photosensitive potential.

3. Foreign objects in beam path. Any foreign

objects will block the light from developing an

image on the Photosensitive drum.

Remove the toner cartridge and check for

damage. Replace the toner cartridge if it is

damaged.

Remove the Printer Cover and inspect the path

from the Laser/Scanner to the toner cartridge

drum, looking for foreign objects in the beam path.

Table 7-7 White Stripes (parallel to path)

Possible Cause Recommended Action

1. Toner cartridge is damaged. Inspect the toner cartridge for a scratched

photosensitive drum or toner leaking through

worn seals. Replace as necessary.

2. Fusing Assembly is contaminated or damaged. Inspect the Fusing Assembly for toner build-up or

scratches on the fuser rollers. Try cleaning with

alcohol. Replace the Fusing Assembly if

damaged.

3. Static Eliminator Strip teeth are contaminated

or defective. Remove and inspect (see Chapter 6 for removal

procedure). Clean using compressed air.

Replace if damaged.

Table 7-8 Black Lines (perpendicular to path)

7-24 Troubleshooting

NOTE When troubleshooting repetitive image defects, use the Repetitive Image

Defect Ruler, supplied in Figure 7-3 to measure the distance between

recurring defects.

Possible Cause Recommended Action

1. Toner cartridge not seated properly. Remove the cartridge and reinsert it.

2. Toner cartridge defective. Replace the cartridge.

3. Repetitive defect. If the lines are repeated at a

consistent interval down the page, this is a

repetitive defect.

Refer to Table 7-10 (next), as well as the “Repetitive

Image Defect Ruler,” (Figure 7-3).

Table 7-9 Black Lines (parallel to path)

Possible Cause Recommended Action

1. Toner cartridge is damaged. The

circumference of the photoconductive drum

inside the toner cartridge is 94 mm (3.7 inches).

If the defect repeats at this interval, the defect is

associated with the drum (see note below).

Inspect the drum for scratches or damage.

Replace the toner cartridge.

2. Dirty Rollers. Any dirty roller in the paper path

may result in a repetitive print defect. Examine and clean rollers in the paper path

(refer to Chapter 4).

3. Fusing Assembly is dirty or defective. The

circumference of the lower fusing Pressure Roller

is 86 mm (3.46 inches). If the defect repeats at

this interval, the defect is associated with the

Pressure Roller (see note below).

Clean the Fusing Assembly using alcohol. If the

problem persists, replace the Fusing Assembly.

4. Gears are worn, causing slippage or jumping. Inspect the gears driving the toner cartridge and

the Fuser. Replace the Main Drive Assembly if

necessary.

5. Paper does not meet specs. The surface of

the paper may be too coarse, causing repeated

marks.

Try a different paper lot (see

HP LaserJet Printer

Family Paper Specifications Guide

Table 7-10 Repetitive Defects

Troubleshooting

Troubleshooting 7-25

Possible Cause Recommended Action

1. The density adjustment slider switch on the

High Voltage Power Supply PCA slider switch is

not aligned properly with the Print Density Dial.

This causes the drum surface potential to be out

of range.

1. Check the position of the Print Density Dial in

the slider switch. If out of position, remove and

reseat the High Voltage Power Supply PCA.

2. Replace the High Voltage Power Supply PCA.

2. Toner build-up in the Fusing Assembly. Toner

build-up can physically damage the Fusing

Assembly.

Remove and clean the Fusing Assembly (see

Chapter 6).

3. Leaking toner cartridge. Replace the toner cartridge.

4. Paper does not meet specs. The paper

moisture content, conductivity, or surface finish

may not work correctly with the

electrophotographic process.

Try a different paper lot (see

HP LaserJet Printer

Family Paper Specifications Guide

Table 7-11 Bubble Print

Possible Cause Recommended Action

1. Single sheet of paper defective. Try reprinting the job.

2. Paper does not meet specs. The paper

moisture content, conductivity, or surface finish

may not work correctly with the

electrophotographic process.

Try a different paper lot (see

HP LaserJet Printer

Family Paper Specifications Guide

3. DC Controller defective (low primary voltage). Replace the DC Controller.

4. High Voltage Power Supply PCA defective Replace the High Voltage Power Supply PCA.

5. Transfer Roller defective. Replace the Transfer Roller.

Table 7-12 Dropout

7-26 Troubleshooting

Possible Cause Recommended Action

1. Paper surface too rough. Toner migrates to low

spots, leaving higher areas void. Use paper with correct finish (smoothness)

meeting HP specifications (see

HP LaserJet

Printer Family Paper Specifications Guide

2. Printing on wrong side of paper. The label on the

ream of paper indicates which side to print on. The

different surface properties of some papers may

cause problems if loaded wrong side up.

Check for the arrow on the paper wrapper. Be

sure paper is loaded with the arrow pointing UP

in the paper cassettes, or arrow pointing DOWN

in the MP Tray.

3. Paper surface too smooth for proper toner

adhesion. Use paper with correct finish (smoothness)

meeting HP specifications (see

HP LaserJet

Printer Family Paper Specifications Guide

4. Bad transparencies. Transparencies can have

this problem because they are not designed for

proper toner adhesion.

Use Hewlett-Packard approved transparencies

(see

HP LaserJet Printer Family Paper

Specifications Guide

5. Bad Transfer Roller. If the Transfer Roller has

finger oils on its surface, is dirty or is worn-out,

this problem can result.

Clean the Transfer Roller using a dry, lint-free

cloth. DO NOT touch the Transfer Roller with

your fingers. If the problem persists, replace the

Transfer Roller Assembly.

Table 7-13 Character Voids

Troubleshooting

Troubleshooting 7-27

Possible Cause Recommended Action

Random Background Scatter

1. Bad Media. The moisture content, conductivity

or surface finish may not work correctly with the

electrophotographic process.

Try a different media (see

HP LaserJet Printer

Family Paper Specifications Guide

2. Inside of printer is dirty (toner may have leaked

out of the toner cartridge). Clean inside of printer (see Chapter 4). Install a

new toner cartridge if leaking.

3. Printing on envelope seams. Printing on an

envelope seam can cause a background scatter

problem.

Move the text to an area without seams. If not

printing on seams, try a higher print density

setting (see item 6, below).

4. Defective toner cartridge. Install a new toner cartridge.

5. Dirty or worn Transfer Roller. A worn Transfer

Roller can cause background due to improper

bias voltages.

Clean the Transfer Roller using a dry, lint-free

cloth. DO NOT touch the Transfer Roller with

your fingers. If the problem persists, replace the

Transfer Roller Assembly.

6. Print Density set too low. If the Print Density is

set too low, then background scatter can result,

particularly with envelopes and heavier papers.

Adjust the print density to a higher setting.

Background Scatter at Leading Edge Only (Leading Edge Halo)

1. This problem is caused by toner buildup in the

Fuser Inlet Guide. Replace Fuser Inlet Guide (see Chapter 6).

Table 7-14 Background Scatter (or Leading Edge Halo)

Possible Cause Recommended Action

1. Page too complex. The printer can not create

the image fast enough to keep pace with the print

engine.

Set Page Protect to ON or AUTO.

2. Not enough memory. The page is too complex

for standard printer memory. Add printer memory. As an alternative, simplify

the print job.

3. Printing on legal-size paper when software is

specifying letter size (this will also cause paper

jams).

Review software selection. Ensure that printing

is on selected size.

Table 7-15 Partial Blank Page

7-28 Troubleshooting

Possible Cause Recommended Action

1. Overloaded paper cassette. If the cassette is

overloaded, the Pickup Rollers may not pick correctly. Reload proper amount of paper squarely in the

cassette. Review paper loading with the customer.

2. Paper guide on the paper cassette adjusted

too tight. If the guide is pushing too tightly

against the paper, it may be delayed in being

pulled into the printer.

Verify that the paper guide is adjusted for the

correct paper size and is locked into position.

Note that too loose a setting may cause image

skewing.

3. Paper does not meet specs. The surface of the

paper may be too smooth for the Pickup and Feed

Rollers to correctly feed paper into the printer.

Try a different paper lot (see

HP LaserJet Printer

Family Paper Specifications Guide

4. Worn or broken drive gears. If any gear within

the drive train or paper path becomes

excessively worn or dirty, erratic paper movement

can result.

Replace the defective gear or Main Drive

assembly.

5. Worn Pickup, or Registration Rollers. Paper is

not being picked-up consistently. Inspect all paper path rollers, looking for wear,

cracks, or glazing. Replace the worn rollers.

Table 7-16 Faulty Registration

Troubleshooting

Troubleshooting 7-29

Possible Cause Recommended Action

1. Bad media. The moisture content, conductivity, or

surface finish of the media being printed may not

work correctly with the electrophotographic process.

Try a different paper lot or other media (see

LaserJet Printer Family Paper Specifications

Guide

2. Dirty Fusing Rollers. Toner build-up can cause

the print on a page to smear. Remove and inspect the Fusing Assembly for

excessive toner build-up. Clean using alcohol.

3. The Static Eliminator Strip is dirty or is not

grounded, allowing a static charge to remain on

the page.

Clean or replace the Anti-Static Brush. Use

compressed air to clean (see “Anti -Static Brush”

in Chapter 6).

4. Fusing Assembly is defective. The print will

smear if the Fusing Assembly is not heated

sufficiently to bond the toner image to the paper.

Replace the Fusing Assembly.

5. DC Controller is defective. The DC Controller

regulates fusing roller temperature. If a new Fusing Assembly does not resolve the

problem, replace the DC Controller PCA.

Table 7-17 Smeared Print

Possible Cause Recommended Action

1. Toner cartridge bushings are too tight. This

may occur on refilled toner cartridges. Replace the toner cartridge.

2. Broken or worn gear. Inspect and replace the worn gear or assembly.

Table 7-18 Compressed Print

Possible Cause Recommended Action

1. Paper is loaded incorrectly. If the paper is not

installed flush into the paper cassette, a skewing

problem will result.

Remove paper from the tray and install paper

correctly. Position the paper guide correctly for

the paper size being used.

2. Bad Paper Lot. Paper that is manufactured

poorly or inconsistently, or that has too smooth or

too rough a surface texture can cause an image

skew problem.

Try a different paper lot (see

HP LaserJet Printer

Family Paper Specifications Guide

3. Worn Pickup and/or Registration Rollers.

Paper is not being picked-up consistently. Inspect all paper path rollers, looking for wear,

cracks, or glazing. Replace the worn rollers.

Table 7-19 Image Skew

7-30 Troubleshooting

Troubleshooting Checks

Engine Test

The engine test print is used to verify that the print engine is functioning

correctly. The Formatter PCA is completely bypassed during an engine test.

This test is very useful for isolating printer problems. The engine test

prints a full page of horizontal lines down the entire printable area, and is

also useful for checking and adjusting registration.

Engine Test Button Location

The engine test print button (SW7001) is located on the DC Controller PCA.

It is accessible through a hole at the rear of the printer.

Printing an Engine Test

To print an engine test, use a non-metallic object to press the engine test

button (see Figure 7-2). A single test page is printed.

Engine Test Button and Printout

Engine Test Printout

7ENGTST Figure 7-2

Troubleshooting

Troubleshooting 7-31

Half Self Test Functional Check

The electrophotographic process can be subdivided into the following stages:

•Cleaning (removing excess toner from drum surface)

•Conditioning (placing a uniform electrical charge on drum)

•Writing (laser strikes surface of drum to create latent image)

•Development (formation of the toner image on drum)

•Transfer (charge to transfer the image to paper)

•Fusing (heat and pressure to produce a permanent image)

The purpose of the Half Self Test Check is to determine which process is

malfunctioning. Perform the test as follows:

1Initiate a printer control panel self test.

2Open the Front Door after the paper advances half-way through the printer

(about five seconds after the Main Motor begins rotation). The leading edge

of the paper should have advanced past the toner cartridge.

3Remove the toner cartridge.

4Open the toner cartridge’s drum shield to view the drum’s surface.

If a dark and distinct toner image is present on the drum’s surface, assume

that the first four functions of the electrophotographic process are

functioning (cleaning, conditioning, writing and developing - see Chapter 5),

and troubleshoot the failure as a transfer or fusing problem.

If NO image is present on the photosensitive drum, perform the following

functional checks:

1Drum Rotation Functional Check.

2High Voltage Power Supply Check.

7-32 Troubleshooting

Drum Rotation Functional Check

The photosensitive drum, located in the toner cartridge, must rotate for the

print process to work. The photosensitive drum receives its drive from the

Main Drive assembly. To verify whether the drum is rotating:

1Open the Front Door.

2Remove the toner cartridge.

3Mark the cartridge’s drive gear with a felt-tipped marker. Note the position

of the mark.

4Install the toner cartridge, and close the Front Door. The start-up sequence

should rotate the drum enough to move the mark.

5Open the printer, and inspect the gear that was marked in step 3. Verify

that the mark moved. If the mark did not move, inspect the Main Drive

assembly to ensure that it is meshing with the toner cartridge gears. If the

drive gears appear functional, and the drum does not move, replace the

toner cartridge.

NOTE This test is especially important if refilled toner cartridges have been used.

Troubleshooting

Troubleshooting 7-33

High-Voltage Power Supply Check

The High-Voltage Power Supply PCA provides the necessary voltages for

the electrophotographic processes. A method for verifying the high-voltage

system is given in the table below.

CHECKS ACTION

1. Toner cartridge connection

points. Visually inspect the three connection points

on the inside left end of the toner cartridge. If

they are dirty or corroded, clean the

connections. Clean using alcohol only. If

damaged, replace the toner cartridge.

2. High voltage contacts. The high voltage contact springs mount on

the High Voltage Power Supply PCA and

protrude through the toner cartridge cavity to

contact the toner cartridge. Verify that the

contacts are not dirty or corroded, and that

the spring action is functional. If dirty, clean

using alcohol only; if damaged, replace the

High Voltage Power Supply PCA (see

Chapter 6 for procedure).

Table 7-20 High Voltage System Checks

7-34 Troubleshooting

Paper Curl

Paper curl is inherent to the laser printing processes, and occurs when

paper is subjected to heat. Paper curl tends to relax as the paper cools

while resting on a flat surface. The specification for maximum paper curl

when the paper is lying flat before print is 5 mm (0.2 inches).

Although paper curl cannot be totally eliminated, some steps can be taken

to lessen its impact, as suggested in the following table.

Possible Cause Recommended Action

1. Paper Path Try using MP Tray.

2. Paper Surface The recommended printing surface of the page is

usually marked on the end of a ream of paper,

indicated by a small arrow and the phrase “print this

side first.” Load paper in the Paper Cassette with

the recommended printing surface facing UP

(facing down in the MP Tray).

3. Paper Storing and

Handling Over time, paper assumes the characteristics of its

storage environment (in a humid environment,

paper absorbs moisture; in a dry environment,

paper loses moisture). Paper with higher moisture

content will tend to curl more. Evaluate the storage

conditions of the paper.

4. Paper Type All paper is manufactured differently (different

textures, moisture content, drying processes,

composition, etc.). Change the type of paper being

used and re-evaluate the paper curl results.

Table 7-21 Causes of Paper Curl

Troubleshooting

Troubleshooting 7-35

Troubleshooting Tools

Repetitive Image Defect Ruler

First occurence of print defect

Primary Charging Roller 43 mm (1.7 in)

Face Down Delivery (Upper) Roller 50 mm (1.96 in)

Registration Roller 50 mm (1.96 in)

Transfer Roller 61 mm (2.4 in)

Developing Cylinder 63 mm (2.48 in)

Fusing Pressure Roller 86 mm (3.38 in)

Upper Fusing Roller 88 mm (3.46 in)

Toner Cartridge Photosensitive Drum 94 mm (3.7 in)

7DFTRUL

Figure 7-3

7-36 Troubleshooting

Wiring Diagrams

This section contains the following diagrams:

Figure 7-4. DC Controller Inputs (1 sheet)

Figure 7-5. DC Controller Outputs (1 of 2)

Figure 7-6. DC Controller Outputs (2 of 2)

Figure 7-7. Main Wiring Diagram (1 sheet, fold-out)

Troubleshooting

Troubleshooting 7-37

7DCIN

Figure 7-4 DC Controller Inputs

7-38 Troubleshooting

7DCOUT1

Figure 7-5 DC Controller Outputs (1 of 2)

Troubleshooting

Troubleshooting 7-39

7DCOUT2

Figure 7-6 DC Controller Outputs (2 of 2)

7-40 Troubleshooting

7WIRING

Figure 7-7 Main Wiring Diagram

Troubleshooting

Troubleshooting 7-41

7-42 Troubleshooting

Parts and Diagrams

Chapter Contents

How to Use the Part Lists and Diagrams . . . . . . . . . . . . . . . . . 8-3

Ordering Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

Ordering Consumables . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4

Accessories and Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5

Common Hardware and Replaceable Cables . . . . . . . . . . . . . . . 8-7

Illustrations and Parts Lists . . . . . . . . . . . . . . . . . . . . . 8-9 – 8-30

Parts and Diagrams 8-1

8-2 Parts and Diagrams

How to Use the Part Lists and Diagrams

The figures in this chapter illustrate the major subassemblies in the printer

and their component parts. A table (material list) follows each exploded

assembly diagram. Each table lists the reference designator (item number)

for each part, the associated part number for the item, the quantity, and a

description of the part.

While looking for a part number, pay careful attention to the voltage listed

in the description column to ensure that the part number selected is for the

correct model of printer.

Ordering Parts

All standard part numbers listed are stocked and may be ordered from HP’s

Support Materials Organization (SMO), or Support Materials Europe (SME).

Hewlett-Packard Co.

Support Materials Organization

8050 Foothills Blvd.

Roseville, CA 95678

Parts Direct Ordering: 1-800-227-8164 (U.S. Only)

Hewlett-Packard Co.

Support Materials, Europe

Wolf-Hirth Strasse 33

D-7030 Böblingen, Germany

(49 7031) 14-2253

Contact your local HP Parts Coordinator for other local phone numbers.

Parts and

Diagrams

Parts and Diagrams 8-3

Ordering Consumables

Consumables and accessories such as those listed on Table 8-1 may be

ordered from Hewlett-Packard.

The phone numbers are:

U.S.: 1-800-538-8787

Canada: 1-800-387-3154

(Toronto) 516-671-8383

United Kingdom: 0734-441212

Germany: 0130-3322

Contact your local HP Parts Coordinator for other local phone numbers.

NOTE Parts that have no reference designator or part number are not field

replacement parts and cannot be ordered through SMO.

8-4 Parts and Diagrams

Accessories and Supplies

The following items are available through your local authorized HP dealer.

To find a dealer near you (or if your dealer is temporarily out of stock), call

the HP Customer Information Center (800) 752-0900.

NOTE Refer to “Related Documentation” in Chapter 1 for documentation and

training media product numbers.

Item Product Number Description

Toner Cartridge C3900A Replacement toner cartridge.

Memory upgrades 1 MByte - C3130A

2 MByte - C3131A

4 MByte - C3132A

8 MByte - C3133A

16 MByte - C3146A

You can upgrade to a total of 68

MBytes of memory in the HP

LaserJet 4V and upgrade to 52

MBytes in the HP LaserJet 4MV.

Adobe’s PostScript Level 2 C3160A You can add Adobe’s Level 2

PostScript language by installing

this SIMM in your printer.

(Additional memory required.) It is

standard in the 4MV printer.

250-sheet replacement Paper

Cassette C3160A 250 sheet adjustable between

Letter and A4.

C3161A 250 sheet adjustable between

11x17 and A3.

C3162A 250 sheets legal only.

C3163A 250 sheets JIS B4 only.

C3164A 250 sheets JIS B5 only.

500-sheet Universal Lower

Cassette Base Unit (includes

500-sheet paper cassette)

C3760A 500 sheets adjustable for Letter,

legal, 11x17, A4, A3, JIS B4.

(See Table 8-12 for replacable

parts.)500-sheet replacement paper

cassette for Universal Lower

Cassette Base

C3761A

Bi-Tronics Parallel cable 24542D Bi-Tronics parallel cable.

C2950A 2 meter, IEEE 1284 compliant.

C2951A 3 meter, IEEE 1284 compliant.

Table 8-1 Accessories and Supplies

Parts and

Diagrams

Parts and Diagrams 8-5

Modular I/O and Network Cards J2550A HP JetDirect Multi-protocol Network

Card with Ethernet/IEEE802.3

10Base-T

J2552A HP JetDirect Multi-protocol Network

Card with LocalTalk DIN-8 and

Ethernet/IEEE802.3 10Base-T

BNC. (Standard in 4MV.)

J2553A HP JetDirect Multi-protocol Network

Card with Token Ring (DB9 and

RJ45).

UNIX Interface Software J2374B HP JetDirect interface software for

HP-UX systems.

J2375B HP JetDirect interface software for

SunOS and Solaris UNIX systems.

Disk Accessory C3295A 42.8 MBytes

Table 8-1 Accessories and Supplies - continued

8-6 Parts and Diagrams

Common Hardware and Replaceable Cables

Example Ref Description Part Number

CH101 Screw, Trus Head, w/Washer FA9-1449-000

CH102 Screw, Stepped, M3 RA1-7636-000

CH103 Screw, Stepped, M3X4 RB1-5489-000

CH104 Screw, Stepped, M3 RB1-5552-000

CH105 Screw, w/Washer, M3X8 XA9-0253-000

CH106 Screw, TP, M3X6 XA9-0267-000

CH107 Screw, M3X25 XA9-0375-000

CH108 Screw, BH3X6(S) XB1-2300-607

CH109 Screw, Mach, Trus Head M3X8 XB1-2302-507

CH110 Screw, Machine M4X8 XB1-2400-809

CH111 Screw, Tap Binding Head M4X8 XB4-7400-809

CH112 Screw, Pan Head Self-tap XB4-7401-007

CH113 Screw, Bind Head Self-tap XB4-7401-009

Table 8-A Common Fasteners Used in the Printer

8SCREW_C

8SCREW_B

8SCREW_L

8SCREW_A

8SCREW_M

8SCREW_A

8SCREW_N

8SCREW_F

Parts and

Diagrams

Parts and Diagrams 8-7

Example Ref Description Part Number

CH114 Screw, Machine M3X8 XB6-7300-809

CH115 Screw, TP, M3X16 XB6-7301-609

CH116 Retaining Ring (e-type) XD2-1100-242

CH117 Retaining Ring (e-type) XD2-1100-322

CH118 Retaining Ring (e-type) XD2-1100-402

CH119 Retaining Ring (e-type) XD2-1100-502

CH120 Retaining Ring (e-type) XD2-1100-642

CH121 Retaining Ring (e-type) XG9-0260-000

CH122 Screw, Mach, M3X14 XB1-2301-407

Table 8-A Common Fasteners Used in the Printer - continued

Description Part No. Fig Ref

Cable, Beam Detect RG5-1442-000 8-9 10

Option Cable Assembly RG5-1446-000 8-3 11B

Clutch Cable RG5-1447-000 8-8 18

DC Cable Assembly RG5-0239-000 8-8 17

Display Panel Cable

Assembly RG5-1485-000 8-2 14

Table 8-B Replaceable Cables

8SCREW_K

8SCREW_H

8-8 Parts and Diagrams

Major Assembly Locations

8ASYLOC1

Figure 8-1

Parts and

Diagrams

Parts and Diagrams 8-9

Covers and Doors

8EXTCOV1

Figure 8-2

8-10 Parts and Diagrams

Ref Part No. Qty Description

1 RA2-0448-000 1 Pivot

2 RB1-1291-000 1 Shaft, 2

4 RB1-1421-000 1 Cover

5 RB1-5562-000 1 Panel, Rear

6 RB1-5563-000 1 Panel, Left

8 RF5-1141-000 1 Guide, Plate, Protection

9 RF5-1166-000 1 Panel, Right

12 RG5-1562-000 1 Multi-purpose Tray Assembly 100/115V

12 RG5-1563-000 1 Multi-purpose Tray Assembly 220/240V

13 RG5-1539-000 1 Display Panel Assembly 100/115V

13 RG5-1540-000 1 Display Panel Assembly 220/240V

14 RG5-1485-000 1 Display Panel Cable Assembly

15 RF5-1173-000 1 Slider

16 RB1-1336-000 1 Cover, Cable

18 WT2-5018-000 2 Clip, Cable

19 RG5-1541-000 1 Upper Cover Assembly

20 RB1-5467-000 1 Eliminator, Static Charge

CH104 RB1-5552-000 1 Screw, Stepped, M3

CH106 XA9-0267-000 1 Screw, TP, M3X6

CH111 XB4-7400-809 7 Screw, Tapping, Truss Head

Table 8-2 Covers and Doors

Parts and

Diagrams

Parts and Diagrams 8-11

Foot Assemblies

8EXTCOV2

Figure 8-3

8-12 Parts and Diagrams

Ref Part No. Qty Description

3 RB1-5575-000 1 Cover, Rear Cassette

7 RF5-1176-000 1 Plate, Cover

10 RG5-1550-000 1 Right Foot Assembly

11 RG5-1551-000 1 Left Foot Assembly

CH110 XB1-2400-809 1 Screw, Machine M4X8

11B RG5-1446-000 1 Option Cable Assembly

Table 8-3 Foot Assemblies

Parts and

Diagrams

Parts and Diagrams 8-13

Front Door Components (Page 1 of 2)

8FNTCOV1

Figure 8-4

8-14 Parts and Diagrams

Ref Part No. Qty Description

1 RA1-7563-000 1 Mount

3 RA2-0418-000 1 Mount, Rod

4 RB1-1399-000 1 Plate, Continuity, 1

5 RB1-1400-000 1 Plate, Continuity, 2

6 RB1-1438-000 1 Lever, Sensor, A

7 RA2-0420-000 1 Lever, Door Sensing, B

8 RB1-1422-000 1 Shaft, Gear, A

9 RB1-1423-000 1 Shaft, Gear, B

10 RB1-1424-000 1 Shaft, Gear, C

11 RB1-1429-000 1 Guide, Connector

12 RF5-0400-000 1 Lever, Sensor, Delivery

13 RF5-1165-000 1 Cover, Front

14 RG5-0209-000 1 Paper Guide Plate Assembly

15 RG5-0231-000 1 Front Cover Connect PCA Assembly

16 RG5-0505-000 1 Delivery Drive Assembly

18 RG5-1420-000 1 Fusing Assembly 100/115V

18 RG5-1406-000 1 Fusing Assembly 220/240V

18 C3141-69002 1 Exchange Fusing Assembly 100/115V

18 C3141-69001 1 Exchange Fusing Assembly 220/240V

20 RG5-1410-000 1 Transfer Roller Holder Assembly

21 RG5-1417-000 1 AC Terminal PCA Assembly

22 RS5-0186-000 1 Gear, 34T

23 RS5-0187-000 1 Gear, 21T/40T

24 RS5-0576-000 1 Gear, 25T/33T

25 RS5-2125-000 1 Spring, Tension

26 RS5-2128-000 2 Spring, Tension

27 RS5-8128-000 1 Label, Caution, High Temp

28 RF5-1150-000 1 Guide, Entrance

29 RA1-7636-000 3 Screw, Stepped M3

30 XD9-0079-000 2 Washer, Wave

CH102 RA1-7636-000 1 Screw, Stepped, M3

CH105 XA9-0253-000 1 Screw, W/Washer, M3X8

CH106 XA9-0267-000 1 Screw, TP, M3X6

CH113 XB4-7401-009 1 Screw, Bind Head Self-tap

CH114 XB6-7300-809 1 Screw, Machine M3X8

CH115 XB6-7301-609 1 Screw, TP, M3X16

CH116 XD2-1100-242 1 Retaining Ring (e-type)

Table 8-4 Front Door Components (1 of 2)

Parts and

Diagrams

Parts and Diagrams 8-15

Front Door Components (Page 2 of 2)

8FNTCOV2

Figure 8-5

8-16 Parts and Diagrams

Ref Part No. Qty Description

17 RG5-1404-000 1 Paper Guide Plate Assembly

19 RG5-1552-000 1 Front Door Assembly

20 RB1-1411-000 1 Roller, Pickup

CH103 RB1-5489-000 1 Screw, Stepped, M3X4

CH105 XA9-0253-000 1 Screw, W/Washer, M3X8

CH111 XB4-7400-809 2 Screw, Tap Binding Head M4X8

CH121 XG9-0260-000 1 Retaining Ring (e-type)

17P RS1-2342-000 1 Spring, Tension

17Q RS5-2118-000 2 Spring, Tension

17R RS5-2122-000 1 Spring, Tension

17S RS5-2126-000 1 Spring, Tension

17T RS5-2129-000 1 Spring, Tension

Table 8-5 Front Door Components (2 of 2)

Parts and

Diagrams

Parts and Diagrams 8-17

Output Components

8INTCOV

Figure 8-6

8-18 Parts and Diagrams

Ref Part No. Qty Description

1 RB1-1352-040 1 Shutter, Laser

2 RB1-5457-000 1 Cover, Louver

3 RB1-5459-000 1 Pad, Shutter

4 RB1-5460-000 1 Cover, Center

5 RG5-1545-000 1 Guide, Delivery Unit

6 RG5-0198-000 1 Face Down Delivery Assembly

7 RG5-0200-000 6 FD Roller Assembly

10 RS5-1004-000 1 Bushing

11 RG5-1396-000 1 Gear Mounting Assembly

CH108 XB1-2300-607 1 Screw, BH3X6(S)

CH112 XB4-7401-007 1 Screw, Pan Head Self-tap

CH120 XD2-1100-642 2 Retaining Ring (e-type)

Table 8-6 Output Components

Parts and

Diagrams

Parts and Diagrams 8-19

Internal Components (Page 1 of 4)

8INTCOM1

Figure 8-7

8-20 Parts and Diagrams

Ref Part No. Qty Description

1 RA2-0298-000 1 Rack

2 RA2-0321-000 1 Bushing

3 RB1-1274-000 1 Eliminator, Static Charge

4 RB1-1317-000 1 Plate, Pressure, Right

5 RB1-1318-000 1 Plate, Pressure, Left

6 RB1-1324-000 1 Lever

7 RB1-1343-000 1 Knob, Print Density

8 RB1-1344-000 1 Bracket, Anti-static Brush

9 RB1-1349-000 1 Hook, Right

10 RB1-1350-000 1 Hook, Left

11 RB1-5454-000 1 Spring, Leaf

12 RF5-0302-000 1 Separation Pad

13 RF5-0395-000 1 Guide, Paper

14 RF5-0396-000 1 Guide

15 RG5-1391-000 1 Pickup Roller Assembly

15B RB1-1386-000 2 Roller, Pickup

15D RH7-5095-000 1 Clutch, Electromagnetic

16 RG5-1399-000 1 Drum Drive Assembly

17 RS5-2117-000 2 Spring, Tension

18 RS5-2123-000 2 Spring, Compression

CH106 XA9-0267-000 2 Screw, TP, M3X6

CH108 XB1-2300-607 1 Screw, BH3X6(S)

CH111 XB4-7400-809 1 Screw, Tap Binding Head M4X8

CH114 XB6-7300-809 1 Screw, Machine M3X8

CH117 XD2-1100-322 1 Retaining Ring (e-type)

CH119 XD2-1100-502 1 Retaining Ring (e-type)

CH120 XD2-1100-642 1 Retaining Ring (e-type)

Table 8-7 Internal Components (1 of 4)

Parts and

Diagrams

Parts and Diagrams 8-21

Internal Components (Page 2 of 4)

8INTCOM2

Figure 8-8

8-22 Parts and Diagrams

Ref Part No. Qty Description

1 RA2-0308-000 2 Roller, Guide

2 RA2-0311-000 1 Bushing, Sensor

3 RA2-0312-000 2 Claw

4 RB1-1292-000 1 Plate, Stop, Clutch, R

5 RB1-1294-000 1 Rod, Left

6 RB1-1367-000 1 Retainer

7 RB1-1385-000 1 Rod

8 RB1-2748-000 1 Stopper, Registration

10 RB1-5442-000 1 Plate, Stop, Clutch

11 RB1-5445-000 1 Plate, Mounting, Right

12 RB1-5490-000 1 Plate, Mounting, Left

13 RF5-0331-000 1 Plate, Rod, Left

14 RF5-1142-000 1 Guide, Cartridge

15 RG5-0194-000 1 Registration Roller Assembly, Metal

16 RG5-0195-000 1 Registration Roller Assembly, Rubber

17 RG5-0239-000 1 DC Cable Assembly

18 RG5-1447-000 1 Clutch Cable

19 RH7-1126-000 1 Fan (FM1)

20 RH7-5094-000 1 Clutch, Electromagnetic

21 RS5-1058-000 1 Bushing

22 RS5-1147-000 1 Bushing

23 RG5-1398-000 1 Main Drive Assembly

24 WT2-0388-000 5 Clip, Cable

CH106 XA9-0267-000 1 Screw, TP, M3X6

CH111 XB4-7400-809 1 Screw, Tap Binding Head M4X8

CH114 XB6-7300-809 1 Screw, Machine M3X8

CH118 XD2-1100-402 1 Retaining Ring (e-type)

CH119 XD2-1100-502 3 Retaining Ring (e-type)

CH120 XD2-1100-642 1 Retaining Ring (e-type)

Table 8-8 Internal Components (2 of 4)

Parts and

Diagrams

Parts and Diagrams 8-23

Internal Components (Page 3 of 4)

8INTCOM3

Figure 8-9

8-24 Parts and Diagrams

Ref Part No. Qty Description

2 FG2-4647-000 1 Sub Transfer Assembly

3 RB1-1278-000 1 Lever, Paper Sensing

4 RB1-1286-000 1 Cover, E

5 RB1-1325-000 1 Plate

7 RF5-0326-000 1 Plate, Contact Transfer

8 RF5-0397-000 1 Lever, Sensor, Front, Reg

9 RG5-1383-000 1 Laser/Scanner Assembly

10 RG5-1442-000 1 Cable, Beam Detect

11 RH3-2150-000 1 Power Supply Assembly 100/115V

11 RH3-2151-000 1 Power Supply Assembly 220/240V

12 RH7-1199-000 1 Motor, DC 17.5W

13 RG5-1435-000 1 HV Power Supply Assembly

CH101 FA9-1449-000 1 Screw, Truss Head, w/Washer

CH106 XA9-0267-000 1 Screw, TP, M3X6

CH107 XA9-0375-000 1 Screw, M3X25

CH110 XB1-2400-809 1 Screw, Machine M4X8

CH111 XB4-7400-809 1 Screw, Tap Binding HeaD M4X8

F101 WD1-0224-000 1 Fuse, 125V, 6.3A

F101 WD1-0643-151 1 Fuse, 250V, 3.15A

Table 8-9 Internal Components (3 of 4)

Parts and

Diagrams

Parts and Diagrams 8-25

Internal Components (Page 4 of 4)

8INTCOM4

Figure 8-10

8-26 Parts and Diagrams

Ref Part No. Qty Description

1 RB1-1273-000 1 Guide, Cassette

2 RB1-1346-000 1 Plate, HVT

3 RB1-1380-020 1 Bracket, Cable

4 RB1-5446-000 1 Plate, Rear Shield

5 RG5-1416-000 1 Cass Size Sensor Assembly

6 RH7-1214-000 1 Fan (FM2)

7 WT2-0317-000 4 Clip, Cable

8 WT2-5011-000 2 Clip, Cable

9 WT2-5018-000 1 Clip, Cable

10 WT2-5114-000 1 Bushing

11 RG5-1560-000 1 Card Cage Assembly

12 RG5-1559-000 1 DC Controller PCA Assembly

12 C3141-69003 1 Exchange DC Controller PCA Assembly

13 RB1-5559-000 1 Clamp, Cable

14 C3143-67901 1 Formatter PCA

14 C3143-69001 1 Exchange Formatter PCA

15 RB1-5786-000 1 MIO Cover Plate

16 RB1-5789-000 2 MIO Guide Rail

17 WT2-9501-000 1 Holder, Cable

CH106 XA9-0267-000 2 Screw, TP, M3X6

CH109 XB1-2302-507 1 Screw, Mach, Trus Head M3X25

CH110 XB1-2400-809 1 Screw, Machine M4X8

CH111 XB4-7400-809 1 Screw, Tap Binding Head M4X8

Table 8-10 Internal Components (4 of 4)

Parts and

Diagrams

Parts and Diagrams 8-27

Card Cage Assembly

8CRDCAGE

Figure 8-11

8-28 Parts and Diagrams

Ref Part No. Qty Description

4 RB1-5557-000 1 Rail, Slide, Right

5 RB1-5558-000 1 Rail, Slide, Left

6 RH7-1218-000 1 Fan (FM3)

7 RG5-1484-000 1 Small Interface PCA

CH106 XA9-0267-000 6 Screw, TP, M3X6

CH122 XB1-2301-407 1 Screw, Mach, Trus Head M3X14

Table 8-11 Card Cage Assembly

Parts and

Diagrams

Parts and Diagrams 8-29

Ref Part No. Qty Description

N/A C3760-60001 1 Lower Cassette Assembly

N/A C3760-69001 1 Exchange Lower Cassette Assembly

N/A C3760-60503 1 Lower Cassette Paper Guide

N/A C3760-60502 1 Lower Cassette Paper Tray

N/A C3760-60501 1 Lower Cassette Pickup Roller

Table 8-12 Optional Lower Cassette Assembly

8-30 Parts and Diagrams

Parts Index

Parts Index A-1

Alphabetical Parts Index

Description Part No. Fig Ref

AC Terminal PCA Assembly RG5-1417-000 8-4 21

Bracket, Anti-static Brush RB1-1344-000 8-7 8

Bracket, Cable RB1-1380-020 8-10 3

Bushing RA2-0321-000 8-7 2

Bushing RS5-1004-000 8-6 10

Bushing RS5-1058-000 8-8 21

Bushing RS5-1147-000 8-8 22

Bushing WT2-5114-000 8-10 10

Bushing, Sensor RA2-0311-000 8-8 2

Cable, Beam Detect RG5-1442-000 8-9 10

Card Cage Assembly RG5-1560-000 8-10 11

Cass Size Sensor Assembly RG5-1416-000 8-10 5

Clamp, Cable RB1-5559-000 8-10 13

Claw RA2-0312-000 8-8 3

Clip, Cable WT2-5018-000 8-2 18

Clip, Cable WT2-0317-000 8-10 7

Clip, Cable WT2-0388-000 8-8 24

Clip, Cable WT2-5011-000 8-10 8

Clip, Cable WT2-5018-000 8-10 9

Clutch Cable RG5-1447-000 8-8 18

Clutch, Electromagnetic RH7-5094-000 8-8 20

Clutch, Electromagnetic RH7-5095-000 8-7 15D

Cover RB1-1421-000 8-2 4

Cover, Cable RB1-1336-000 8-2 16

Cover, Center RB1-5460-000 8-6 4

Cover, E RB1-1286-000 8-9 4

Cover, Front RF5-1165-000 8-4 13

Cover, Louver RB1-5457-000 8-6 2

Table A-1 Alphabetical Parts List

A-2 Parts Index

Description Part No. Fig Ref

Cover, Rear Cassette RB1-5575-000 8-3 3

DC Cable Assembly RG5-0239-000 8-8 17

DC Controller PCA Assembly RG5-1559-000 8-10 12

Delivery Drive Assembly RG5-0505-000 8-4 16

Display Panel Assembly 100/115V RG5-1539-000 8-2 13

Display Panel Assembly 220/240V RG5-1540-000 8-2 13

Display Panel Cable Assembly RG5-1485-000 8-2 14

Drum Drive Assembly RG5-1399-000 8-7 16

Eliminator, Static Charge RB1-1274-000 8-7 3

Eliminator, Static Charge RB1-5467-000 8-2 20

Exchange DC Controller PCA Assembly C3141-69003 8-10 12

Exchange Formatter PCA Assembly C3143-69001 8-10 14

Exchange Fusing Assembly 100/115V C3141-69002 8-4 18

Exchange Fusing Assembly 220/240V C3141-69001 8-4 18

Exchange Lower Cassette Assembly C3760-69001 8-12 N/A

Face Down Delivery Assembly RG5-0198-000 8-6 6

Fan (FM1) RH7-1126-000 8-8 19

Fan (FM2) RH7-1214-000 8-10 6

Fan (FM3) RH7-1218-000 8-11 6

FD Roller Assembly RG5-0200-000 8-6 7

Formatter PCA C3143-67901 8-10 14

Front Cover Connect PCA Assembly RG5-0231-000 8-4 15

Front Door Assembly RG5-1552-000 8-5 19

Fuse, 125V, 6.3A WD1-0224-000 8-9 F101

Fuse, 250V, 3.15A WD1-0643-151 8-9 F101

Fusing Assembly 100/115V RG5-1420-000 8-4 18

Fusing Assembly 220/240V RG5-1406-000 8-4 18

Gear Mounting Assembly RG5-1396-000 8-6 11

Gear, 21T/40T RS5-0187-000 8-4 23

Gear, 25T/33T RS5-0576-000 8-4 24

Table A-1 Alphabetical Parts List - continued

Parts

Index

Parts Index A-3

Description Part No. Fig Ref

Gear, 34T RS5-0186-000 8-4 22

Guide RF5-0396-000 8-7 14

Guide, Cartridge RF5-1142-000 8-8 14

Guide, Cassette RB1-1273-000 8-10 1

Guide, Connector RB1-1429-000 8-4 11

Guide, Delivery Unit RG5-1545-000 8-6 5

Guide, Entrance RF5-1150-000 8-4 28

Guide, Paper RF5-0395-000 8-7 13

Guide, Plate, Protection RF5-1141-000 8-2 8

Holder, Cable WT2-9501-000 8-10 17

Hook, Left RB1-1350-000 8-7 10

Hook, Right RB1-1349-000 8-7 9

HV Power Supply Assembly RG5-1435-000 8-9 13

Knob, Print Density RB1-1343-000 8-7 7

Label, Caution, High Temp RS5-8128-000 8-4 27

Laser/Scanner Assembly RG5-1383-000 8-9 9

Left Foot Assembly RG5-1551-000 8-3 11

Lever RB1-1324-000 8-7 6

Lever, Door Sensing, B RA2-0420-000 8-4 7

Lever, Paper Sensing RB1-1278-000 8-9 3

Lever, Sensor, A RB1-1438-000 8-4 6

Lever, Sensor, Delivery RF5-0400-000 8-4 12

Lever, Sensor, Front, REG RF5-0397-000 8-9 8

Lower Cassette Assembly C3760-60001 8-12 N/A

Lower Cassette Paper Guide C3760-60503 8-12 N/A

Lower Cassette Paper Tray C3760-60502 8-12 N/A

Lower Cassette Pickup Roller C3760-60501 8-12 N/A

Main Drive Assembly RG5-1398-000 8-8 23

MIO Cover Plate RB1-5786-000 8-10 15

MIO Guide Rail RB1-5789-000 8-10 16

Table A-1 Alphabetical Parts List - continued

A-4 Parts Index

Description Part No. Fig Ref

Motor, DC 17.5W RH7-1199-000 8-9 12

Mount RA1-7563-000 8-4 1

Mount, Rod RA2-0418-000 8-4 3

Multi-purpose Tray Assembly 100/115V RG5-1562-000 8-2 12

Multi-purpose Tray Assembly 220/240V RG5-1563-000 8-2 12

Option Cable Assembly RG5-1446-000 8-3 11B

Pad, Separation RF5-0302-000 8-7 12

Pad, Shutter RB1-5459-000 8-6 3

Panel, Left RB1-5563-000 8-2 6

Panel, Rear RB1-5562-000 8-2 5

Panel, Right RF5-1166-000 8-2 9

Paper Guide Plate Assembly RG5-0209-000 8-4 14

Paper Guide Plate Assembly RG5-1404-000 8-5 17

Pickup Roller Assembly RG5-1391-000 8-7 15

Pivot RA2-0448-000 8-2 1

Plate RB1-1325-000 8-9 5

Plate, Contact Transfer RF5-0326-000 8-9 7

Plate, Continuity, 1 RB1-1399-000 8-4 4

Plate, Continuity, 2 RB1-1400-000 8-4 5

Plate, Cover RF5-1176-000 8-3 7

Plate, HVT RB1-1346-000 8-10 2

Plate, Mounting, Left RB1-5490-000 8-8 12

Plate, Mounting, Right RB1-5445-000 8-8 11

Plate, Pressure, Left RB1-1318-000 8-7 5

Plate, Pressure, Right RB1-1317-000 8-7 4

Plate, Rear Shield RB1-5446-000 8-10 4

Plate, Rod, Left RF5-0331-000 8-8 13

Plate, Stop, Clutch RB1-5442-000 8-8 10

Plate, Stop, Clutch, R RB1-1292-000 8-8 4

Power Supply Assembly 100/115V RH3-2150-000 8-9 11

Table A-1 Alphabetical Parts List - continued

Parts

Index

Parts Index A-5

Description Part No. Fig Ref

Power Supply Assembly 220/240V RH3-2151-000 8-9 11

Rack RA2-0298-000 8-7 1

Rail, Slide, Left RB1-5558-000 8-11 5

Rail, Slide, Right RB1-5557-000 8-11 4

Registration Roller Assembly, Metal RG5-0194-000 8-8 15

Registration Roller Assembly, Rubber RG5-0195-000 8-8 16

Retainer RB1-1367-000 8-8 6

Retaining Ring (e-type) XD2-1100-242 8-4 116

Retaining Ring (e-type) XD2-1100-322 8-7 117

Retaining Ring (e-type) XD2-1100-402 8-8 118

Retaining Ring (e-type) XD2-1100-502 8-7 119

Retaining Ring (e-type) XD2-1100-502 8-8 119

Retaining Ring (e-type) XD2-1100-642 8-6 120

Retaining Ring (e-type) XD2-1100-642 8-7 120

Retaining Ring (e-type) XD2-1100-642 8-8 120

Retaining Ring (e-type) XG9-0260-000 8-5 121

Right Foot Assembly RG5-1550-000 8-3 10

Rod RB1-1385-000 8-8 7

Rod, Left RB1-1294-000 8-8 5

Roller, Guide RA2-0308-000 8-8 1

Roller, Pickup RB1-1411-000 8-5 20

Roller, Pickup RB1-1386-000 8-7 15B

Screw, BH3X6(S) XB1-2300-607 8-6 108

Screw, BH3X6(S) XB1-2300-607 8-7 108

Screw, Bind Head Self-tap XB4-7401-009 8-4 113

Screw, M3X25 XA9-0375-000 8-9 107

Screw, Machine, Trus Head M3X14 XB1-2301-407 8-11 122

Screw, Machine, Trus Head M3X25 XB1-2302-507 8-10 109

Screw, Machine M3X8 XB6-7300-809 8-4 114

Screw, Machine M3X8 XB6-7300-809 8-7 114

Table A-1 Alphabetical Parts List - continued

A-6 Parts Index

Description Part No. Fig Ref

Screw, Machine M3X8 XB6-7300-809 8-8 114

Screw, Machine M4X8 XB1-2400-809 8-3 110

Screw, Machine M4X8 XB1-2400-809 8-9 110

Screw, Machine M4X8 XB1-2400-809 8-10 110

Screw, Pan Head Self-tap XB4-7401-007 8-6 112

Screw, Stepped M3 RA1-7636-000 8-4 29

Screw, Stepped, M3 RA1-7636-000 8-4 102

Screw, Stepped, M3 RB1-5552-000 8-2 104

Screw, Stepped, M3X4 RB1-5489-000 8-5 103

Screw, Tap Binding Head M4X8 XB4-7400-809 8-5 111

Screw, Tap Binding Head M4X8 XB4-7400-809 8-7 111

Screw, Tap Binding Head M4X8 XB4-7400-809 8-8 111

Screw, Tap Binding Head M4X8 XB4-7400-809 8-9 111

Screw, Tap Binding Head M4X8 XB4-7400-809 8-10 111

Screw, Tapping, Trus Head XB4-7400-809 8-2 CH111

Screw, TP, M3X16 XB6-7301-609 8-4 115

Screw, TP, M3X6 XA9-0267-000 8-2 106

Screw, TP, M3X6 XA9-0267-000 8-4 106

Screw, TP, M3X6 XA9-0267-000 8-7 106

Screw, TP, M3X6 XA9-0267-000 8-8 106

Screw, TP, M3X6 XA9-0267-000 8-9 106

Screw, TP, M3X6 XA9-0267-000 8-10 106

Screw, TP, M3X6 XA9-0267-000 8-11 106

Screw, Trus Head, w/washer FA9-1449-000 8-9 101

Screw, w/washer, M3X8 XA9-0253-000 8-4 105

Screw, w/washer, M3X8 XA9-0253-000 8-5 105

Shaft, 2 RB1-1291-000 8-2 2

Shaft, Gear, A RB1-1422-000 8-4 8

Shaft, Gear, B RB1-1423-000 8-4 9

Shaft, Gear, C RB1-1424-000 8-4 10

Table A-1 Alphabetical Parts List - continued

Parts

Index

Parts Index A-7

Description Part No. Fig Ref

Shutter, Laser RB1-1352-040 8-6 1

Slider RF5-1173-000 8-2 15

Small Interface PCA RG5-1484-000 8-11 7

Spring, Compression RS5-2123-000 8-7 18

Spring, Leaf RB1-5454-000 8-7 11

Spring, Tension RS1-2342-000 8-5 17P

Spring, Tension RS5-2117-000 8-7 17

Spring, Tension RS5-2118-000 8-5 17Q

Spring, Tension RS5-2122-000 8-5 17R

Spring, Tension RS5-2125-000 8-4 25

Spring, Tension RS5-2126-000 8-5 17S

Spring, Tension RS5-2128-000 8-4 26

Spring, Tension RS5-2129-000 8-5 17T

Springs, Separation Pad RS5-2123-000 8-7 18

Stopper, Registration RB1-2748-000 8-8 8

Sub Transfer Assembly FG2-4647-000 8-9 2

Transfer Roller Holder Assembly RG5-1410-000 8-4 20

Upper Cover Assembly RG5-1541-000 8-2 19

Washer, Wave XD9-0079-000 8-4 30

Table A-1 Alphabetical Parts List - continued

A-8 Parts Index

Numerical Parts Index

Part No. Description Fig Ref

C3141-69001 Exchange Fusing Assembly 220/240V 8-4 18

C3141-69002 Exchange Fusing Assembly 100/115V 8-4 18

C3141-69003 Exchange DC Controller PCA Assembly 8-10 12

C3143-67901 Formatter PCA 8-10 14

C3143-69001 Exchange Formatter PCA 8-10 14

C3760-60001 Lower Cassette Assembly 8-12 N/A

C3760-60501 Lower Cassette Pickup Roller 8-12 N/A

C3760-60502 Lower Cassette Paper Tray 8-12 N/A

C3760-60503 Lower Cassette Paper Guide 8-12 N/A

C3760-69001 Exchange Lower Cassette Assembly 8-12 N/A

FA9-1449-000 Screw, Trus Head, w/washer 8-9 101

FG2-4647-000 Sub Transfer Assembly 8-9 2

RA1-7563-000 Mount 8-4 1

RA1-7636-000 Screw, Stepped M3 8-4 29

RA1-7636-000 Screw, Stepped, M3 8-4 102

RA2-0298-000 Rack 8-7 1

RA2-0308-000 Roller, Guide 8-8 1

RA2-0311-000 Bushing, Sensor 8-8 2

RA2-0312-000 Claw 8-8 3

RA2-0321-000 Bushing 8-7 2

RA2-0418-000 Mount, Rod 8-4 3

RA2-0420-000 Lever, Door Sensing, B 8-4 7

RA2-0448-000 Pivot 8-2 1

RB1-1273-000 Guide, Cassette 8-10 1

RB1-1274-000 Eliminator, Static Charge 8-7 3

RB1-1278-000 Lever, Paper Sensing 8-9 3

RB1-1286-000 Cover, E 8-9 4

RB1-1291-000 Shaft, 2 8-2 2

Table A-2 Numerical Parts List

Parts

Index

Parts Index A-9

Part No. Description Fig Ref

RB1-1292-000 Plate, Stop, Clutch, R 8-8 4

RB1-1294-000 Rod, Left 8-8 5

RB1-1317-000 Plate, Pressure, Right 8-7 4

RB1-1318-000 Plate, Pressure, Left 8-7 5

RB1-1324-000 Lever 8-7 6

RB1-1325-000 Plate 8-9 5

RB1-1336-000 Cover, Cable 8-2 16

RB1-1343-000 Knob, Print Density 8-7 7

RB1-1344-000 Bracket, Anti-static Brush 8-7 8

RB1-1346-000 Plate, HVT 8-10 2

RB1-1349-000 Hook, Right 8-7 9

RB1-1350-000 Hook, Left 8-7 10

RB1-1352-040 Shutter, Laser 8-6 1

RB1-1367-000 Retainer 8-8 6

RB1-1380-020 Bracket, Cable 8-10 3

RB1-1385-000 Rod 8-8 7

RB1-1386-000 Roller, Pickup 8-7 15B

RB1-1399-000 Plate, Continuity, 1 8-4 4

RB1-1400-000 Plate, Continuity, 2 8-4 5

RB1-1411-000 Roller, Pickup 8-5 20

RB1-1421-000 Cover 8-2 4

RB1-1422-000 Shaft, Gear, A 8-4 8

RB1-1423-000 Shaft, Gear, B 8-4 9

RB1-1424-000 Shaft, Gear, C 8-4 10

RB1-1429-000 Guide, Connector 8-4 11

RB1-1438-000 Lever, Sensor, A 8-4 6

RB1-2748-000 Stopper, Registration 8-8 8

RB1-5442-000 Plate, Stop, Clutch 8-8 10

RB1-5445-000 Plate, Mounting, Right 8-8 11

RB1-5446-000 Plate, Rear Shield 8-10 4

Table A-2 Numerical Parts List - continued

A-10 Parts Index

Part No. Description Fig Ref

RB1-5454-000 Spring, Leaf 8-7 11

RB1-5457-000 Cover, Louver 8-6 2

RB1-5459-000 Pad, Shutter 8-6 3

RB1-5460-000 Cover, Center 8-6 4

RB1-5467-000 Eliminator, Static Charge 8-2 20

RB1-5489-000 Screw, Stepped, M3X4 8-5 103

RB1-5490-000 Plate, Mounting, Left 8-8 12

RB1-5552-000 Screw, Stepped, M3 8-2 104

RB1-5557-000 Rail, Slide, Right 8-11 4

RB1-5558-000 Rail, Slide, Left 8-11 5

RB1-5559-000 Clamp, Cable 8-10 13

RB1-5562-000 Panel, Rear 8-2 5

RB1-5563-000 Panel, Left 8-2 6

RB1-5575-000 Cover, Rear Cassette 8-3 3

RB1-5786-000 MIO Guide Plate 8-10 15

RB1-5789-000 MIO Guide Rail 8-10 16

RF5-0302-000 Pad, Separation 8-7 12

RF5-0326-000 Plate, Contact Transfer 8-9 7

RF5-0331-000 Plate, Rod, Left 8-8 13

RF5-0395-000 Guide, Paper 8-7 13

RF5-0396-000 Guide 8-7 14

RF5-0397-000 Lever, Sensor, Front, REG 8-9 8

RF5-0400-000 Lever, Sensor, Delivery 8-4 12

RF5-1141-000 Guide, Plate, Protection 8-2 8

RF5-1142-000 Guide, Cartridge 8-8 14

RF5-1150-000 Guide, Entrance 8-4 28

RF5-1165-000 Cover, Front 8-4 13

RF5-1166-000 Panel, Right 8-2 9

RF5-1173-000 Slider 8-2 15

RF5-1176-000 Plate, Cover 8-3 7

Table A-2 Numerical Parts List - continued

Parts

Index

Parts Index A-11

Part No. Description Fig Ref

RG5-0194-000 Registration Roller Assembly, Metal 8-8 15

RG5-0195-000 Registration Roller Assembly, Rubber 8-8 16

RG5-0198-000 Face Down Delivery Assembly 8-6 6

RG5-0200-000 FD Roller Assembly 8-6 7

RG5-0209-000 Paper Guide Plate Assembly 8-4 14

RG5-0231-000 Front Cover Connect PCA Assembly 8-4 15

RG5-0239-000 DC Cable Assembly 8-8 17

RG5-0505-000 Delivery Drive Assembly 8-4 16

RG5-1383-000 Laser/Scanner Assembly 8-9 9

RG5-1391-000 Pickup Roller Assembly 8-7 15

RG5-1396-000 Gear Mounting Assembly 8-6 11

RG5-1398-000 Main Drive Assembly 8-8 23

RG5-1399-000 Drum Drive Assembly 8-7 16

RG5-1404-000 Paper Guide Plate Assembly 8-5 17

RG5-1410-000 Transfer Roller Holder Assembly 8-4 20

RG5-1416-000 Cass Size Sensor Assembly 8-10 5

RG5-1417-000 AC Terminal PCA Assembly 8-4 21

RG5-1435-000 HV Power Supply Assembly 8-9 13

RG5-1442-000 Cable, Beam Detect 8-9 10

RG5-1446-000 Option Cable Assembly 8-3 11B

RG5-1447-000 Clutch Cable 8-8 18

RG5-1484-000 Small Interface PCA 8-11 7

RG5-1485-000 Display Panel Cable Assembly 8-2 14

RG5-1539-000 Display Panel Assembly 100/115V 8-2 13

RG5-1540-000 Display Panel Assembly 220/240V 8-2 13

RG5-1541-000 Upper Cover Assembly 8-2 19

RG5-1545-000 Guide, Delivery Unit 8-6 5

RG5-1550-000 Right Foot Assembly 8-3 10

RG5-1551-000 Left Foot Assembly 8-3 11

RG5-1552-000 Front Door Assembly 8-5 19

Table A-2 Numerical Parts List - continued

A-12 Parts Index

Part No. Description Fig Ref

RG5-1557-000 Fusing Assembly 100/115V 8-4 18

RG5-1558-000 Fusing Assembly 220/240V 8-4 18

RG5-1559-000 DC Controller PCA Assembly 8-10 12

RG5-1560-000 Card Cage Assembly 8-10 11

RG5-1562-000 Multi-purpose Tray Assembly 100/115V 8-2 12

RG5-1563-000 Multi-purpose Tray Assembly 220/240V 8-2 12

RH3-2150-000 Power Supply Assembly 100/115V 8-9 11

RH3-2151-000 Power Supply Assembly 220/240V 8-9 11

RH7-1126-000 Fan (FM1) 8-8 19

RH7-1199-000 Motor, DC 17.5W 8-9 12

RH7-1214-000 Fan (FM2) 8-10 6

RH7-1218-000 Fan (FM3) 8-11 6

RH7-5094-000 Clutch, Electromagnetic 8-8 20

RH7-5095-000 Clutch, Electromagnetic 8-7 15D

RS1-2342-000 Spring, Tension 8-5 17P

RS5-0186-000 Gear, 34T 8-4 22

RS5-0187-000 Gear, 21T/40T 8-4 23

RS5-0576-000 Gear, 25T/33T 8-4 24

RS5-1004-000 Bushing 8-6 10

RS5-1058-000 Bushing 8-8 21

RS5-1147-000 Bushing 8-8 22

RS5-2117-000 Spring, Tension 8-7 17

RS5-2118-000 Spring, Tension 8-5 17Q

RS5-2122-000 Spring, Tension 8-5 17R

RS5-2123-000 Spring, Compression 8-7 18

RS5-2125-000 Spring, Tension 8-4 25

RS5-2126-000 Spring, Tension 8-5 17S

RS5-2128-000 Spring, Tension 8-4 26

RS5-2129-000 Spring, Tension 8-5 17T

RS5-8128-000 Label, Caution, High Temp 8-4 27

Table A-2 Numerical Parts List - continued

Parts

Index

Parts Index A-13

Part No. Description Fig Ref

WD1-0224-000 Fuse, 125V, 6.3A 8-9 F101

WD1-0643-151 Fuse, 250V, 3.15A 8-9 F101

WT2-0317-000 Clip, Cable 8-10 7

WT2-0388-000 Clip, Cable 8-8 24

WT2-5011-000 Clip, Cable 8-10 8

WT2-5018-000 Clip, Cable 8-2 18

WT2-5018-000 Clip, Cable 8-10 9

WT2-5114-000 Bushing 8-10 10

WT2-9501-000 Holder, Cable 8-10 17

XA9-0253-000 Screw, w/washer, M3X8 8-4 105

XA9-0253-000 Screw, w/washer, M3X8 8-5 105

XA9-0267-000 Screw, TP, M3X6 8-2 106

XA9-0267-000 Screw, TP, M3X6 8-4 106

XA9-0267-000 Screw, TP, M3X6 8-7 106

XA9-0267-000 Screw, TP, M3X6 8-8 106

XA9-0267-000 Screw, TP, M3X6 8-9 106

XA9-0267-000 Screw, TP, M3X6 8-10 106

XA9-0267-000 Screw, TP, M3X6 8-11 106

XA9-0375-000 Screw, M3X25 8-9 107

XB1-2300-607 Screw, BH3X6(S) 8-6 108

XB1-2300-607 Screw, BH3X6(S) 8-7 108

XB1-2301-407 Screw, Machine, Trus Head M3X14 8-11 122

XB1-2302-507 Screw, Machine, Trus Head M3X25 8-10 109

XB1-2400-809 Screw, Machine M4X8 8-3 110

XB1-2400-809 Screw, Machine M4X8 8-9 110

XB1-2400-809 Screw, Machine M4X8 8-10 110

XB4-7400-809 Screw, Tap Binding Head M4X8 8-5 111

XB4-7400-809 Screw, Tap Binding Head M4X8 8-7 111

XB4-7400-809 Screw, Tap Binding Head M4X8 8-8 111

XB4-7400-809 Screw, Tap Binding Head M4X8 8-9 111

Table A-2 Numerical Parts List - continued

A-14 Parts Index

Part No. Description Fig Ref

XB4-7400-809 Screw, Tap Binding Head M4X8 8-10 111

XB4-7400-809 Screw, Tapping, Trus Head 8-2 CH111

XB4-7401-007 Screw, Pan Head Self-tap 8-6 112

XB4-7401-009 Screw, Bind Head Self-tap 8-4 113

XB6-7300-809 Screw, Machine M3X8 8-4 114

XB6-7300-809 Screw, Machine M3X8 8-7 114

XB6-7300-809 Screw, Machine M3X8 8-8 114

XB6-7301-609 Screw, TP, M3X16 8-4 115

XD2-1100-242 Retaining Ring (e-type) 8-4 116

XD2-1100-322 Retaining Ring (e-type) 8-7 117

XD2-1100-402 Retaining Ring (e-type) 8-8 118

XD2-1100-502 Retaining Ring (e-type) 8-7 119

XD2-1100-502 Retaining Ring (e-type) 8-8 119

XD2-1100-642 Retaining Ring (e-type) 8-6 120

XD2-1100-642 Retaining Ring (e-type) 8-7 120

XD2-1100-642 Retaining Ring (e-type) 8-8 120

XD9-0079-000 Washer, Wave 8-4 30

XG9-0260-000 Retaining Ring (e-type) 8-5 121

Table A-2 Numerical Parts List - continued

Parts

Index

Parts Index A-15

A-16 Parts Index

I/O Information

Bi-Tronics Parallel Cable Information

The Bi-Tronics parallel interface is compatible with Centronics parallel

interfaces. To take advantage of its enhanced capabilities such as

bi-directional communication between the computer and printer, faster

transmission of data, and auto configuration of printer drivers the customer

must have:

•Support in software applications for these features.

•A parallel cable with the correct pin configuration (see below).

Parallel Cable Pin Configuration

For best results, use the C24542D, C2950A, C2951A cable, or equivalent.

Most existing parallel cables support Bi-Tronics communication, but some

might have incompatible pin assignments.

CAUTION Ensure that all power and interface cables on the printer and host computer

are properly grounded in compliance with local codes.

Parallel Cable Pin Assignments (C24542D)

Figure B-1

I/O Information B-1

Connecting to LocalTalk Networks

The printer does not come with a LocalTalk network cable. Use a standard

LocalTalk network cable and connector kit, such as the HP LocalTalk

Network Cable Kit, part number 92215N. You will need one connector kit

for each printer on the network, and another for each Macintosh computer

on the network.

Connecting to the END of a LocalTalk Network

1Disconnect the printer from its power source. Insert the connector box cable

into the LocalTalk port of the printer.

2Insert one end of the cable into the new connector box.

3If the connector box is not self-terminating, insert a terminating resistor

into the connector box.

4Insert the other end of the cable into the last connector box on the network.

(Remove the terminating resistor if necessary.)

5Reconnect the printer to its power source.

Figure B-2

B-2 I/O Information

Connecting to the MIDDLE of a LocalTalk

Network

Connecting to the MIDDLE of a LocalTalk Network (1 of 2)

1Disconnect the printer from its power source. Insert the new connector box

cable into the LocalTalk port of the printer.

2Insert one end of the new cable into the connector box.

3Place the other end of the new cable next to a connector box on the network.

4Unplug one cable from the connector box on the network.

Connecting to the MIDDLE of a LocalTalk Network (2 of 2)

5Insert the new cable into the connector box on the network.

6Insert the cable you removed from the network into the new connector box.

Then, reconnect the printer to its power source.

Figure B-3

Figure B-4

I/O Information

I/O Information B-3

Connecting to a Network.

The printer supports up to four different cables: Bi-Tronics parallel, (Figure

B-5, callout 1), BNC (ThinLAN) (Figure B-5, callout 2), 10Base-T (RJ-45)

(Figure B-5, callout 3), and DIN-8 (LocalTalk) (Figure B-5, callout 4). Select

the appropriate interface cable from those shown below for the system and

connect the cable or cables to the printer.

I/O Connector Locations

The cable used to connect the printer to the network, a BNC “T” connector,

and a 50 Ohm terminator are not provided with the printer. They must be

purchased separately.

NOTE You may attach either a ThinLAN cable or a 10Base-T cable, but not both at

the same time.

BNC Interface

Attach one section of the ThinLAN cable to one side of the BNC “T”

connector. Attach another ThinLAN cable section or a 50 Ohm terminator

to the other side. If you are attaching the printer to the end of your network

you must connect a 50 Ohm terminator.

10Base-T Interface

Plug the connector of the twisted-pair network cable into the 10Base-T jack

(RJ-45) on the HP JetDirect card. The other end of the cable should then be

attached to a twisted-pair hub/concentrator.

BINTFACE

Figure B-5

B-4 I/O Information

DIN-8 (LocalTalk) Interface

Plug the end of the DIN-8 cable into the LocalTalk port on the HP JetDirect

card.

NOTE If you are using only the LocalTalk port, 18 MIO NOT READY will appear

every time you turn on the printer. This message will automatically

disappear after 5 minutes.

Optional Network Configuration.

The following is for HP LaserJet 4MV printers only.

Certain network parameters for Novell NetWare, UNIX (HP-UX, Solaris, or

SunOS), and EtherTalk networks might need to be set depending upon the

network configuration. The following describes the parameters and

procedures to set those parameters.

By factory default, all supported network protocols are enabled in the HP

LaserJet 4MV printer.

Disabling unused protocols will:

•Rid the network of unwanted broadcast messages from the printer.

•Provide better control over who prints to the printer.

•Provide only pertinent information on the self test page.

•Allow the display of warning messages on the printer control panel display

to show protocol-specific error conditions. The procedures for disabling the

network protocols is found later in this appendix.

Software which allows configuration on the supported networks is included

with the printer, except for UNIX (AIX, HP-UX, Solaris, or SunOS) which

must be purchased separately.

Network software configuration information for the printer is located in the

HP JetDirect Network Interface Configuration Guide included with the HP

LaserJet 4MV printer.

To Enter the MIO Menu:

1Press [On Line] to take the printer offline.

2Press [Menu] until MIO MENU appears.

3Press [Item] until CFG NETWORK=NO * appears.

4Press [+] until CFG NETWORK=YES appears.

5Press [Enter]. CFG NETWORK=YES * appears.

I/O Information

I/O Information B-5

Configuring Novell NetWare Frame Type Parameters.

Normally selecting a NetWare frame type is not required. The HP JetDirect

card automatically selects a NetWare frame type, and only when this

selection is incorrect do you have to set the NetWare frame type through the

HP LaserJet 4MV control panel. The NetWare frame type is displayed on

the self test page.

To manually configure Novell NetWare parameters:

1Press [Item] until CFG NOVELL=NO * appears.

2Press [+] until CFG NOVELL=YES * appears.

3Press [Enter]. CFG NOVELL=YES * appears.

4Press [Item]. FRAME=AUTO * appears.

5To configure the Novell NetWare protocol, Press [+] to select one of these

frame types:

6Press [Enter] to save the selection. An asterisk * appears.

7If other protocols will be used, continue with the next section. Otherwise,

skip to “Disable Network Protocols” at the end of this appendix.

Frame Type Description

AUTO (default) All listed Novell frame types will be allowed.

EN_8023 Limit frame types to IPX over IEEE 802.3 frames. All

others will be counted and discarded.

EN_II Limit frame types to IPX over Ethernet II frames. All

others will be counted and discarded.

EN_8022 Limit frame types to IPX over IEEE 802.2 frames. All

others will be counted and discarded.

EN_SNAP Limit frame types to IPX over SNAP with Ethernet

frames. All others will be counted and discarded.

Table B-1 Novell NetWare Frame Types on an HP JetDirect Ethernet Card

B-6 I/O Information

Configuring TCP/IP Parameters

The HP JetAdmin utility for UNIX (sold separately) may be used to

configure TCP/IP parameters. If you do not have the HP JetAdmin utility

for UNIX, or you are using a UNIX system other than HP-UX, Solaris, or

SunOS, you may use the control panel of the printer to configure these

TCP/IP parameters manually:

•Usage of the bootp file for configuration parameters (the default is to use

the bootp file) IP address (4 bytes)

•Subnet mask (4 bytes)

•Syslog server IP address (4 bytes)

•Default gateway (4 bytes)

TCP connection timeout (in seconds)

To manually configure TCP/IP parameters:

1Press [Item]. CFG TCP/IP=NO * appears.

2Press [+]. CFG TCP/IP=YES appears.

3Press [Enter]. CFG TCP/IP=YES * appears.

4Press [Item] to manually configure TCP.IP parameters. BOOTP=YES *

appears. If you keep BOOTP=YES *, then the values for the TCP/IP

parameters will be provided by the bootp file, no other TCP/IP configuring is

necessary.

5Press [+] to change the value of the BOOTP=parameter. BOOTP = NO

appears.

6Press [Enter] to save the selection. BOOTP=NO * appears. If you selected

BOOTP=NO *, then you will be prompted to configure each of the TCP/IP

parameters.

7Press [Item] to continue configuring.*** IP BYTE 1 = ALUE * *** appears.

8Press [+] until the value of the first byte of the IP address appears on the

control panel display. Note that if you Press and hold [+] , the value will

scroll rapidly.

9Press [Enter] to save the value.

10 Press [Item] to continue. Repeat steps 8 and 9 to configure the remaining

bytes of the IP address.

11 Repeat steps 8 through 10 to configure the subnet mask bytes (SM), syslog

server IP address (LG), default gateway (GW), and timeout (TIMEOUT).

12 If no other protocol is enabled, Press [On Line]. After completing this guide

refer to the HP JetDirect Network Interface Configuration Guide for

configuration instructions.

I/O Information

I/O Information B-7

Configuring Apple EtherTalk Phase Parameter

To configure EtherTalk parameters:

1If you do not want to configure the phase parameter, Press [On Line].

2Press [Item]. CFG ETALK=NO * appears.

3Press [+]. CFG ETALK=YES appears.

4Press [Enter]. CFG ETALK=YES * appears.

5Press [Item]. Phase=2 * appears.

6Press [+] to change the phase parameter. Phase=1 appears.

7Press [Enter] to save the new value. Phase=1 * appears.

8Press [On Line]. You may want to configure the AppleTalk name and assign

a preferred EtherTalk Zone.

9After completing this guide refer to the HP JetDirect Interface

Configuration Guide for further configuration instructions on using the HP

LaserJet Utility.

B-8 I/O Information

Disable Network Protocols (Optional).

1Press [On Line] to take the printer offline.

2Press [Menu] repeatedly until MIO MENU appears.

3Press [Item]. CFG NETWORK=NO * appears.

4Press [+]. CFG NETWORK=YES * appears.

5Press [Enter]. CFG NETWORK YES * appears.

6Press [Item] to scroll through each network protocol. NOVELL=ON * appears.

To Disable Novell NetWare:

1Press [+] to change to NOVELL=OFF.

2Press [Enter] to save the new status. NOVELL=OFF * appears.

3Press [Item] to continue configuring. DLC/LLC=ON * appears.

To Disable DLC/LLC:

1Press [+] to change to DLC/LLC.

2Press [Enter] to save the new status. DLC/LLC * appears.

3Press [Item] to continue configuring. TCP/IP=ON * appears.

To Disable TCP/IP:

1Press [+] to change to TCP/IP=OFF.

2Press [Enter] to save the new status. TCP/IP=OFF * appears.

3Press [Item] to continue configuring. ATALK=ON * appears.

To Disable Apple EtherTalk and LocalTalk:

1Press [+] to change to ATALK=OFF.

2Press [Enter] to save the new status. ATALK=OFF * appears.

3Press [Item] to continue configuring.

I/O Information

I/O Information B-9

B-10 I/O Information

Regulatory Information

Laser Safety (U.S.A.)

The Center for Devices and Radiological Health (CDRH) of the U.S. Food

and Drug Administration implemented regulations for laser products

manufactured since August 1, 1976. Compliance is mandatory for products

marketed in the United States.

This printer is certified as a “Class 1” laser product under the U.S.

Department of Health and Human Services (DHHS) Radiation Performance

Standard according to the Radiation Control for Health and Safety Act of

1968. Since radiation emitted inside this printer is completely confined

within protective housings and external covers, the laser beam cannot

escape during any phase of normal user operation.

WARNING! Never operate or service the printer with the protective cover removed from

the Laser/Scanner Assembly. The reflected beam, although invisible, can

damage your eyes.

Regulatory Information C-1

Laser Statement (Finland)

The following applies to printer operation and servicing in Finland.

LASERTURVALLISUUS

LUOKAN 1 LASERLAITE

KLASS 1 LASER APPARAT

HP LaserJet(s) 4V and 4MV laserkirjoitin on käyttäjän kannalta

turvallinen luokan 1 laserlaite. Normaalissa käyt"ssä kirjoittimen

suojakotelointi estää lasersäteen pääsyn laitteen ulkopuolelle.

Kirjoittimen on hyväksynyt Suomessa laserturvallisuuden osalta Sähk"tarkastuskeskus.

Laitteen turvallisuusluokka on määritetty valtioneuvoston päät"ksen N:o 472/1985 ja

standardin EN 60825 (1991) mukaisesti.

VAROITUS ! Laitteen käyttäminen muulla kuin käytt"ohjeessa mainitulla tavalla saattaa

altistaa käyttäjän turvallisuusluokan 1 ylittävälle näkymätt"mälle lasersäteilylle.

VARNING ! Om apparaten används på annat sätt än i bruksanvisning specificerats, kan

användaren utsättas f"r osynlig laserstrålning, som “verskrider gränsen f”r laserklass 1.

HUOLTO HP LaserJet(s) 4M and 4MV kirjoittimen sisällä ei ole käyttäjän huollettavissa

olevia kohteita. Laitteen saa avata ja huoltaa ainoastaan sen huoltamiseen koulutettu henkil".

Tällaiseksi huoltotoimenpiteeksi ei katsota väriainekasetin vaihtamista, paperiradan

puhdistusta tai muita käyttäjän käsikirjassa lueteltuja, käyttäjän tehtäväksi tarkoitettuja

ylläpitotoimia, jotka voidaan suorittaa ilman erikoisty"kaluja.

VARO ! Mikäli kirjoittimen suojakotelo avataan, olet alttiina näkymätt"mälle lasersäteilylle

laitteen ollessa toiminnassa. Älä katso säteeseen.

VARNING ! Om laserprinterns skyddsh"lje “ppnas då apparaten är i funktion, utsättas

användaren f”r osynlig laserstrålning. Betrakta ej strålen.

Tiedot laitteessa käytettävän laserdiodin säteilyominaisuuksista:

Aallonpituus 777,795 nm

Teho 5 mW

Luokan 3B laser

C-2 Regulatory Information

Toner Safety

NOTE In case of toner spills, skin and clothing are best cleaned by removing as

much toner as possible with a dry tissue, then washing with cold water. Hot

water causes toner to permanently set into clothing.

MSDS Information

A Material Safety Data Sheet (MSDS) for toner or any other chemical used

in the printer is available through Hewlett-Packard’s Customer Information

Center by either mail or fax.

By mail:

To obtain an MSDS for the HP C3900A toner cartridges through the mail,

call the Customer Information Center (CIC) at 1-800-752-0900 between

6 A.M. and 5 P.M. Pacific Standard Time.

By fax:

To obtain an MSDS for the HP C3900A toner cartridges by fax, call HP

ASAP (Automated Support Access Program) at 1-800-333-1917 and follow

the instructions for using the HP FIRST fax service.

NOTE See “Technical Assistance” earlier in this chapter for more information on

the HP FIRST service.

Ozone Emission

These printers do not use high voltage corona wires in the

electrophotographic process, and therefore generate no measurable ozone

gas (O3). The printers instead use charging rollers in the toner cartridge

and in the print engine.

Regulatory

Information

Regulatory Information C-3

FCC Statement (Class B)

Note: This equipment has been tested and found to comply with the limits

for a Class B digital device, pursuant to part 15 of the FCC rules. These

limits are designed to provide reasonable protection against harmful

interference in a residential installation. This equipment generates, uses,

and can radiate radio frequency energy and, if not installed and used in

accordance with the instructions, may cause harmful interference to radio

communications. However, there is no guarantee that interference will not

occur in a particular installation. If this equipment does cause harmful

interference to radio or television reception, which can be determined by

turning the equipment off and on, the user is encouraged to try to correct

the interference by one or more of the following measures:

•Reorient or relocate the receiving antenna.

•Increase the separation between the equipment and the receiver.

•Connect the equipment into an outlet on a circuit different from that to

which the receiver is connected.

•Consult the dealer or an experienced radio/TV technician for help. Any

changes or modifications not expressly approved by Hewlett-Packard could

void the user’s authority to operate this equipment.

NOTE Use of a shielded interface cable is required to comply within the Class B

limits in Part 15 of FCC rules.

VCCI Statement (Japan)

The VCCI statement below is required in Japan. It is similar to the FCC

regulatory statement.

VCCI Statement (Japan)

Figure C-1

C-4 Regulatory Information

Index

00 OFFLINE, status message 7-6

00 POWERSAVE, status message

7-6

00 READY, status message 7-6

02 WARMING UP, status message

7-6

04 SELF TEST, status message 7-6

05 SELF TEST, status message 7-6

06 DEMO PAGE, status message

7-7

06 PRINTING TEST, status

message 7-6

06 TYPEFACE LIST, status

message 7-6

07 RESET, status message 7-7

08 COLD RESET, status message

7-7

09 RESET ALL I/O, status message

7-7

09 RST ACTIVE I/O, status

message 7-7

10 RESET TO SAVE, status

message 7-7

12 PRINTER OPEN, status

message 7-7

13 PAPER JAM, status message 7-8

14 NO TONER CART, status

message 7-8

16 TONER LOW, status message

7-8

18 MIO INIT, status message 7-9

18 MIO NOT READY, status

message 7-9

20 MEM OVERFLOW, service or

error message 7-11

21 PRINT OVERRUN, service or

error message 7-11

22 MIO ERROR, service or error

message 7-11

40 MIO ERROR, service or error

message 7-11

41.3 PAPER ERROR, service or

error message 7-11

51 ERROR, service or error

message 7-12

52 SERVICE, service or error

message 7-12

53.XY.ZZ ERROR, service or error

message 7-12

55 ERROR, service or error

message 7-13

57 SERVICE, service or error

message 7-13

58.[x] SERVICE, service or error

message 7-13

61.[x] SERVICE, service or error

message 7-13

63 through 67 SERVICE, service or

error message 7-13

68 READY/SERVICE, service or

error message 7-13

68 SERVICE, service or error

message 7-13

70 or 71 ERROR, service or error

message 7-14

AC power distribution 5-5

circuitry 5-5

accessories

user installable 6-5

accessories and supplies 8-5

acoustic emissions 1-7

adhesive labels 1-9

MP tray 1-9

specifications 1-9

Adobe PostScript 5-14

ADV FNCTNS, parallel menu item

3-13

anti-static brush

removal and replacement 6-42

assemblies

front door 1-13, 6-25 - 6-27, 6-30,

6-33, 8-17

assistance, technical 1-20

AUDIO-TIPS, HP 1-20

AUTO CONT, configuration menu

item 3-11

background scatter 7-28

black lines 7-24 - 7-25

black page 7-22

blank (white) page 7-21

blank page, partial 7-28

bottom assemblies 6-44

foot assemblies 6-44

bubble print 7-26

cables

replaceable 8-7

capacities: output tray 1-3

card cage

assembly 8-28

removal and replacement 6-16

cartridge guide

removal and replacement 6-36

cartridge slots 1-3

cassette pickup roller assembly

removal and replacement 6-37

CDRH C-1

Center for Devices and Radiological

Health (CDRH) C-1

Centronics parallel interface B-1

character set

selection 3-9

character set, selection 3-9

character voids 7-27

circuit breaker, resettable 5-5

circuit protection 5-5

class 1 laser product C-1

class B digital device C-4

cleaning

printer 4-3

spilled toner 4-4

clearable warning messages 5-14,

7-5, 7-15

W0 JOB 600/A4 7-15

W1 IMAGE ADAPT 7-15

W2 INVALID PERS 7-15

W3 JOB ABORTED 7-15

W8 JOB 600/OFF 7-15

W9 JOB 600/LTR 7-15

WD DISK NOT INIT 7-15

WM [personality] MEM FULL

7-15

WM CHK MEM CNFIG 7-15

WM JOB 300 7-15

WM JOB 600/A3 7-15

WM JOB 600/LGL 7-15

WM MEM CNFIG N/A 7-15

CLR WARN, configuration menu

item 3-11

clutches 5-8

DC controller 5-7

voltages 5-7

clutches and sensors 5-26

cold reset

default 3-15, 3-18

documenting 3-23

performing 3-24, 7-7

printer memory 3-23

reinitializing control panel 7-7

resetting JetDirect configuration

3-23

common hardware 8-7

compressed print 7-30

Compuserve Forum, HP 1-21

configuration menu 3-11

default settings 3-11

MP TRAY 7-8

configuration menu items

AUTO CONT 3-11

CLR WARN 3-11

LOCK 3-11

LOW TONER 3-11

MP TRAY 3-11

consumables

ordering 8-4

printer 1-16

Index

Index-1

CONT SELF TEST, test menu 3-19

CONT SELF TEST, test menu item

3-14

context-sensitive switching, PJL

5-15

continue key 3-5

Continuous Self Test

selection 3-14

stopping 3-14

control panel 1-3, 3-5, 3-8, 3-20

assembly 6-8

configuration menu 3-11

CONT SELF TEST 3-19

cover 6-8

defaults 3-5 - 3-6, 5-11

described 5-16

features 1-3, 1-11, 3-3 - 3-5, 3-7 -

3-8,

3-12 - 3-14, 3-17, 3-20, 5-11

FONT SOURCE 3-9

indicator lights 3-4

interfaces 5-16

job menu 3-10

keys 3-4 - 3-5, 5-11

layout 3-3

lock and password 3-20

memory configuration menu 3-12

menu map 3-7

menus 3-7

messages 5-16, 5-27, 7-6 - 7-9,

7-15

MEt 5-11

MP TRAY 7-8

options status 3-20

parallel menu 3-13

PCA 5-16, 6-8

PCL menu 3-9

power save 5-11

printing menu 3-8

PS CONFIG PAGE 6-6

PWRSAVE 3-15

removal and replacement 6-8

selecting items 3-7

self test 3-17

self test for printer errors 7-6

self test information 3-20

setting defaults 3-6

settings 5-11, 5-15

temporary settings 3-6

test menu 3-14

using 3-3

control panel cover

removal and replacement 6-8

control panel key

continue 3-5

enter 3-5

item 3-5

menu 3-5

minus (-) 3-5

MP paper size 3-5

on line 3-5

plus (+) 3-5

reset 3-5

shift 3-5

COPIES, printing menu item 3-8

copies, selection 3-8

cover and doors 6-8

control panel 6-8

rear cover 6-12

side covers 6-11

static charge eliminator 6-10

upper cover 6-9

covers 8-10

CPU, Intel 8096CF microprocessor

5-13

formatter PCA 5-6

CPU, printer 5-13

datecode

self test information 3-20

DC controller PCA

removal and replacement 6-19

DC Controller system 5-7

DC power distribution

circuitry 5-7

DC controller system 5-7

explained 5-7

default settings 3-6

control panel 3-5

power save 5-11

default, factory 7-7, B-5

defaults

cold reset 3-15

control panel 5-11

factory 3-6

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