Hp Laserjet 6L Gold Users Manual LJ5L/6L/6L Gold/ Pro Service English

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®

®

HP

LaserJet 5L/6L/6L Gold/6L Pro

Printer

Service Manual

English

© Copyright 2000
Hewlett-Packard Co.
Printed in USA

Manual Part No.
C8060-90903

Printed on at least
50% Total Recycled Fiber with
at least 10% Post-Consumer Paper

*C8060-90903*
*C8060-90903*
C8060-90903

8.268” (A4 Width) X 11” (Letter Height) Back Cover

8.268” (A4 Width) X 11” (Letter Height) Front Cover

Service.book Page 1 Thursday, September 14, 2000 11:15 AM

HP LaserJet 5L/6L/6L Gold/6L Pro Printer

Service Manual _____________

Service.book Page 2 Thursday, September 14, 2000 11:15 AM

© Copyright Hewlett-Packard Company, 2002

Warranty

Trademark Credits

All Rights Reserved. Reproduction,
adaptation, or translation without prior written
permission is prohibited, except as allowed
under the copyright laws.

The information contained in this document
is subject to change without notice.

ENERGY STAR is a U.S. registered service
mark of the United States Environmental
Protection Agency.

Part number: C8060-90903
Second Edition, February 2002

Hewlett-Packard makes no warranty of any
kind with respect to this information.
HEWLETT-PACKARD SPECIFICALLY
DISCLAIMS THE IMPLIED WARRANTY OF
MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE.
Hewlett-Packard shall not be liable for any
direct, indirect, incidental, consequential, or
other damage alleged in connection with the
furnishing or use of this information.

Hewlett-Packard Company
11311 Chinden Boulevard
Boise, Idaho 83714 U.S.A.

Service.book Page 3 Thursday, September 14, 2000 11:15 AM

Conventions
This is a combined Service Manual for the HP LaserJet 5L, 6L, 6L Gold, and 6L Pro printers. The HP
LaserJet 6L Gold shares the same characteristics as the HP LaserJet 6L. For the purposes of this
manual, the “HP LaserJet 6L” refers to both the 6L and the 6L Gold.

This manual uses the following conventions:
COLOR is used to emphasize items that are important to the material under discussion.
Bold is used for emphasis, particularly in situations where italic type would be confusing.
Italic type is used to indicate related documents or emphasis.
Hint

Hints are used to suggest an action that might simplify the process.

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.

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Contents
1 Product information
Chapter contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Printer features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HP LaserJet 6L Gold. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Model and serial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service approach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Exchange Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ordering parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ordering related documentation . . . . . . . . . . . . . . . . . . . . . . . .
Contacting HP to place an order . . . . . . . . . . . . . . . . . . . . . . .
Technical assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HP Customer Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HP worldwide sales and service offices . . . . . . . . . . . . . . . . . .
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hardware service during the warranty period . . . . . . . . . . . . . .
Hardware service after the warranty period . . . . . . . . . . . . . . .
HP LaserJet Toner Cartridge warranty . . . . . . . . . . . . . . . . . . .
Voltage conversions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

13
14
15
15
15
18
19
22
22
22
22
22
23
23
25
28
28
28
29
29

2 Site requirements
Chapter contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Site requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Printer space requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
The HP C3906A/F Toner Cartridge. . . . . . . . . . . . . . . . . . . . . . . . .
Storage conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storing opened toner cartridges . . . . . . . . . . . . . . . . . . . . . . . .
Toner cartridge handling suggestions . . . . . . . . . . . . . . . . . . .

31
32
32
33
34
34
34
35

3 Operating overview
Chapter contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Control Panel layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Indicator lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
The Control Panel Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Printing a self-test page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous self test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Printing an engine test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Resetting the printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
To reset the printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

37
38
38
38
40
41
44
44
45
45

Contents 5

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4 Printer maintenance
Chapter contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
Life expectancy of consumables . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Toner cartridge life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
Saving toner with EconoMode . . . . . . . . . . . . . . . . . . . . . . . . .49
Refilled toner cartridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
Recycling toner cartridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
Cleaning the printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
Cleaning printer components . . . . . . . . . . . . . . . . . . . . . . . . . . .51
Cleaning spilled toner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

5 Functional overview
Chapter contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Basic printer functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
DC Controller/power system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
Print engine control system . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
Power system (on DC Controller PCA) . . . . . . . . . . . . . . . . . . .56
Formatter system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
CPU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
Read only memory (ROM) . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
Random access memory (RAM) . . . . . . . . . . . . . . . . . . . . . . . .58
Parallel interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
Resolution Enhancement technology (REt) . . . . . . . . . . . . . . . .59
EconoMode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
Memory Enhancement technology (MEt). . . . . . . . . . . . . . . . . .59
Enhanced I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
Page Protect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
PJL overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
Image formation system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61
Toner cartridge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61
Step 1: Drum cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
Step 2: Drum conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
Step 3: Image writing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
Step 4: Image developing . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
Step 5: Image transferring . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
Step 6: Image fusing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
Paper feed system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
Paper jam detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
Basic sequence of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66

6 Removal and replacement
Chapter contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69
Removal and replacement strategy . . . . . . . . . . . . . . . . . . . . . . . . .70
Required tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
Installing memory cards (DRAM) . . . . . . . . . . . . . . . . . . . . . . . . . . .72
Covers and doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
Back Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
EP Door Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
Memory Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76
Main Cover and Paper Input Assembly . . . . . . . . . . . . . . . . . . .77
Internal assemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78
Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78
Exit Roller Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
Delivery Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
Fuser Pressure Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82
Heating Element. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84
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Service.book Page 7 Thursday, September 14, 2000 11:15 AM

Pressure Roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Face-Up/Face-Down Lever. . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Fuser Exit Roller Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Paper Exit Sensor Flag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Top assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Laser/Scanner Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Solenoid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Pickup Roller Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Paper Feed Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Transfer Roller Guide and Transfer Roller . . . . . . . . . . . . . . . 101
Kick Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Separation Pad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Subpads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Feed Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Bottom assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Memory Door Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Motor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
DC Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Formatter PCA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

7 Troubleshooting
Chapter contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General troubleshooting flowchart. . . . . . . . . . . . . . . . . . . . . . . . .
Paper path and components . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DC Controller diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Printer error troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Priority of errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Printer status messages . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service and error messages . . . . . . . . . . . . . . . . . . . . . . . . .
Image formation troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . .
Check the toner cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Image defect examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Half self-test functional check . . . . . . . . . . . . . . . . . . . . . . . . .
Drum rotation functional check . . . . . . . . . . . . . . . . . . . . . . . .
High-voltage power supply check . . . . . . . . . . . . . . . . . . . . . .
Paper curl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Paper path check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repetitive image defect ruler . . . . . . . . . . . . . . . . . . . . . . . . .
Main wiring diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

115
116
118
119
120
120
121
123
126
126
127
133
133
134
134
135
137
138
138
139
140

8 Parts and diagrams
Chapter contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
How to use the part lists and diagrams . . . . . . . . . . . . . . . . . . . . .
Ordering parts
..................................
Ordering consumables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessories and supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Common hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

143
144
144
144
145
146
147

Appendix A Parts index
Alphabetical parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
Numerical parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172

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Appendix B Regulatory information
Laser Safety (U.S.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .177
Laser Statement (Finland) . . . . . . . . . . . . . . . . . . . . . . . . . . . .178
Toner safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .179
Ozone emission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .179
FCC Statement (Class B). . . . . . . . . . . . . . . . . . . . . . . . . . . . .180
VCCI Statement (Japan) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .180

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1-1
1-2
1-3
1-4
1-5
1-6
2-1
2-2
3-1
3-2
3-3
3-4
4-1
4-2
5-1
5-2
5-3
5-4
5-5
5-6
5-7
5-8
6-1
6-2
6-3
6-4
6-5
6-6
6-7
6-8
6-9
6-10
6-11
6-12
6-13
6-14
6-15
6-16
6-17
6-18
6-19
6-20
6-21
6-22
6-23
6-24
6-25
6-26
6-27
6-28
6-29
6-30

HP LaserJet 5L model and serial numbers . . . . . . . . . . . . . . . . . . . . . . 15
HP LaserJet 6L model and serial numbers . . . . . . . . . . . . . . . . . . . . . . 16
HP LaserJet 6L Pro model and serial numbers . . . . . . . . . . . . . . . . . . . 17
Front/side views of the printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Front door assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Back view of the printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Printer space requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Toner cartridge distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Self-test page for HP LaserJet 5L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Self-test page for HP LaserJet 6L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Self-test page for HP LaserJet 6L Pro . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Engine test button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Five percent text coverage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Static Eliminator Teeth (located in front of the transfer roller) . . . . . . . . 52
Printer functional block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
DC Controller loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
EconoMode vs. Normal Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Image formation block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Simplified paper path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Solenoid and sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
General timing diagram - HP LaserJet 5L . . . . . . . . . . . . . . . . . . . . . . . 67
General timing diagram - HP LaserJet 6L and HP LaserJet 6L ProSL . 68
Phillips and PosiDriv screwdrivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Back Cover removal (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Back Cover removal (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
EP Door Assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Memory Door removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Main Cover and Paper Input Assembly removal . . . . . . . . . . . . . . . . . . 77
Control Panel removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Exit Roller removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Delivery Assembly removal (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Delivery Assembly removal (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Fuser Pressure Plate removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Fuser Pressure Plate replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Heating Element removal (1 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Heating Element removal (2 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Heating Element removal (3 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Pressure Roller Guide removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Face-Up/Face-Down Lever replacement. . . . . . . . . . . . . . . . . . . . . . . . 88
Fuser Exit Roller removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Paper Exit Sensor Flag replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Laser/Scanner Assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Solenoid removal (1 of 2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Solenoid removal (2 of 2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Pickup Roller Assembly removal (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . 94
Pickup Roller Assembly removal (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . 95
Paper Pickup Roller Assembly replacement (inside/front view) . . . . . . 96
Paper Feed Frame removal (1 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Paper Feed Frame removal (2 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Paper Feed Frame removal (3 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Paper Feed Frame removal (4 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Transfer Roller Guide and Transfer Roller removal (inside/back view) 101
Contents 9

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Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure

10

6-31
6-32
6-33
6-34
6-35
6-36
6-37
6-38
6-39
6-40
6-41
6-42
6-43
7-1
7-2
7-3
7-4
7-5
7-6
7-7
7-8
7-9
8-1
8-2
8-3
8-4
8-5
8-6
8-7
8-8
8-9
8-10
A-1

Kick Plate removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102
Kick Plate Spring replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103
Separation Pad removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104
Subpad removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105
Feed Assembly removal (1 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106
Feed Assembly removal (2 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107
Feed Assembly removal (3 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108
Memory Door Guide removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109
Motor removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .110
DC Controller removal (1 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .111
DC Controller removal (2 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112
DC Controller removal (3 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113
Formatter Board removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114
Paper path and components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .118
DC Controller PCA components . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119
Heating element resistance check . . . . . . . . . . . . . . . . . . . . . . . . . . . .124
Engine test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .133
Toner cartridge high-voltage connection points (1 of 2) . . . . . . . . . . . .135
Toner cartridge high-voltage connection points (2 of 2) . . . . . . . . . . . .136
Overriding PS204 and SW101 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138
Repetitive image defect ruler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .139
Main wiring diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .140
Major assembly locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .147
Covers and doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .148
Internal components (1 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .150
Internal components (2 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .152
Internal components (3 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .154
DC Controller/formatter and cables . . . . . . . . . . . . . . . . . . . . . . . . . . .156
Pickup Roller assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .158
Feed assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .160
Separation Guide assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .162
Delivery assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .164
VCCI statement (Japan) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .180

EN

Service.book Page 11 Thursday, September 14, 2000 11:15 AM

Tables
Table 1-1
Table 1-2
Table 1-3
Table 1-4
Table 1-5
Table 1-6
Table 2-1
Table 2-2
Table 3-1
Table 3-2
Table 4-1
Table 4-2
Table 5-1
Table 5-2
Table 7-1
Table 7-2
Table 7-3
Table 7-3
Table 7-3
Table 7-4
Table 7-5
Table 7-6
Table 8-1
Table 8-2
Table 8-3
Table 8-4
Table 8-5
Table 8-6
Table 8-7
Table 8-8
Table 8-9
Table 8-10
Table 8-11
Table A-1
Table A-2

Printer Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Printer Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Performance specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Acoustic emissions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Related documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Environmental requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Printer dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Indicator Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Control Panel Button usage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Life expectancy of consumables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Cleaning printer components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
Solenoid and sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
Printer timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66
Printer status messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .121
Unclearable error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122
Service and error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123
Service and error messages (Continued 2 of 3) . . . . . . . . . . . . . . . . . . . . . . . .124
Service and error messages (Continued 3of 3) . . . . . . . . . . . . . . . . . . . . . . . . .125
High-voltage power supply check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .135
Paper curl troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .137
Cable pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .141
Accessories and supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .145
Common fasteners used in the printer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .146
Covers and doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .149
Internal components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .151
Internal components (2 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .153
Internal components (3 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .155
DC Controller case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .157
Pickup Roller assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .159
Feed assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .161
Separation Guide assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .163
Delivery assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .165
Alphabetical parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .167
Numerical parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .172

Contents 11

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12

EN

Service.book Page 13 Thursday, September 14, 2000 11:15 AM

1

Product information

Chapter contents
Printer features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Paper capacities and sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
HP LaserJet 6L Gold. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Model and serial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Product overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Front/side views of the printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Front door assemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Back view of the printer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Service approach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Parts Exchange Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Ordering parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Ordering related documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Technical assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
HP Customer Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
HP worldwide sales and service offices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Hardware service during the warranty period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Hardware service after the warranty period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
HP LaserJet Toner Cartridge warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Voltage conversions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

EN

Chapter contents 13

Service.book Page 14 Thursday, September 14, 2000 11:15 AM

Printer features
Note

All references in this manual to the HP LaserJet 6L printer also apply to the HP LaserJet 6L Gold
printer.
Table 1-1

Printer Features

Feature

Description

Print Speed

4 ppm (HP LaserJet 5L); 6 ppm (HP LaserJet 6L/6L Gold and HP LaserJet
6L Pro)

Text and Graphics Resolution

300 or 600 dpi

Printer Language

Enhanced PCL 5 (or host-based on HP LaserJet 6L/6L Gold)

Monthly Usage (pages)

4,000 pages (HP LaserJet 5L); 6,000 pages (HP LaserJet 6L/6L Gold)

Memory:
Standard1

5L and 6L/6L Gold = 1 MB RAM, 2 MB ROM
6L Pro = 4 MB RAM, 4 MB ROM

Maximum

5L and 6L/6L Gold = 9 MB total (available in increments of 1, 2, 4, and 8
MB)2

Capacity

5 V JEDIA card3

Internal Typefaces

26 Scalable Typefaces

Standard Interfaces

IEEE-1284 parallel

Power Control

SleepMode

Control Panel

3 LEDs and 1 Control Panel Button

EconoMode (toner saving)

Yes

1.
2.
3.

Printer memory is optimized with Memory Enhancement technology (MEt).
Not available for the HP LaserJet 6L Pro, 4 MB standard.
JEDIA (Japanese Electronic Device Industry Association) is a group of DRAM suppliers who have standardized
DRAM and other CMOS products.

Paper capacities and sizes
Table 1-2

Printer Features

Feature

Description

Paper Input Tray Capacity

Holds up to 100 sheets of regular weight paper or up to 10 envelopes

Paper Output Bin Capacity

Holds up to 100 sheets

Single Sheet Input Slot

1

Minimum Paper Size

76 mm by 127 mm (3 by 5 inches)

Maximum Paper Size

216 mm by 356 mm (8.5 by 14 inches)

14 Product information

EN

Service.book Page 15 Thursday, September 14, 2000 11:15 AM

Identification
HP LaserJet 6L Gold
The HP LaserJet 6L Gold shares the same characteristics as the HP LaserJet 6L. For the purposes
this manual, “HP LaserJet 6L” refers to both the 6L and the 6L Gold.

Model and serial
The model number and serial numbers are listed on Identification Labels located on the bottom of the
printer. The model number is alphanumeric, such as C3941A for the HP LaserJet 5L printer, C3990A
for the HP LaserJet 6L printer, and C8060A for the HP LaserJet 6L Pro printer.
The serial number contains information about the Country of Origin, the Revision Level, the
Production Code, and production number of the printer.
The labels also contain power rating and regulatory information.

Figure 1-1

EN

HP LaserJet 5L model and serial numbers

Identification 15

Service.book Page 16 Thursday, September 14, 2000 11:15 AM

Figure 1-2

HP LaserJet 6L model and serial numbers

16 Product information

EN

Service.book Page 17 Thursday, September 14, 2000 11:15 AM

Figure 1-3

EN

HP LaserJet 6L Pro model and serial numbers

Identification 17

Service.book Page 18 Thursday, September 14, 2000 11:15 AM

Specifications
Table 1-3

Performance specifications

Category

Specification
1

Print Speed : HP LaserJet 5L
Print Speed: HP LaserJet 6L
Print Speed: HP LaserJet 6L Pro

4 ppm
6 ppm
6 ppm

Monthly Usage (Duty Cycle): HP LaserJet 5L
Monthly Usage (Duty Cycle): HP LaserJet 6L
Monthly Usage (Duty Cycle): HP LaserJet 6L Pro

4,000 pages
6,000 pages
6,000 pages

Life Expectancy of Toner Cartridge (pages)2

2,500 pages at 5% coverage

First Print
HP LaserJet 5L

1.
2.

A4: <23 seconds
Letter: <23 seconds

HP LaserJet 6L

A4: <23 seconds
Letter: <23 seconds

HP LaserJet 6L Pro

A4: 18 seconds
Letter: 18 seconds

Actual speed depends on data complexity and software handling efficiency.
Toner Cartridge life can be extended by using EconoMode.

Table 1-4

Electrical specifications

Volts

Frequency

Amps

120 Vac ± 10%
100 Vac ± 10%

50/60 Hz ± 2 Hz
50/60 Hz ± 2 Hz

3.5 @ 120v

220 Vac ± 10%2
240 Vac ± 10%

50 Hz ± 2 Hz
50 Hz ± 2 Hz

1.8 @ 230v

1.
2.

Watts (typical)
1

Printing = 100 (5L)
SleepMode = 6 (5L)

150 (6L)
4 (6L)

150 (6L Pro)
4 (6L Pro)

Printing = 100 (5L)
SleepMode = 6 (5L)

150 (6L)
4 (6L)

150 (6L Pro)
4 (6L Pro)

Minimum recommended circuit capacity for product.
HP LaserJet 6L Pro operates at 220/240 Volts only.

Table 1-5

Acoustic emissions

During Printing

5.6 Bels Sound Power Level (per ISO 9296)

During Standby & SleepMode

Silent

18 Product information

EN

Service.book Page 19 Thursday, September 14, 2000 11:15 AM

Product overview

1
2

4
5

3
6
11

7

12

8

9
13
10

Figure 1-4

Front/side views of the printer
1

Paper Input Support (not present on the HP LaserJet 6L Pro)

2

Paper Output Support (not present on the HP LaserJet 6L Pro)

3

Paper Guides

4

Error (top) Indicator Light

5

Data (middle) Indicator Light

6

Ready (bottom) Indicator Light

7

Control Panel Button

8

Paper Output Bin

9

Paper Path Lever

10 Serial and Model Number (under printer)
11 Paper Input Tray
12 Single Sheet Input Slot
13 Front Output Slot (face-up)

EN

Product overview 19

Service.book Page 20 Thursday, September 14, 2000 11:15 AM

14

15

16

17

Figure 1-5

Front door assemblies
14 Paper Release Lever
15 Toner Cartridge Compartment
16 Transfer Roller (do not touch)
17 EP Door

20 Product information

EN

Service.book Page 21 Thursday, September 14, 2000 11:15 AM

18

19

Figure 1-6

20

Back view of the printer
18 Power Cable Connector
19 Parallel Cable Connector
20 Memory Expansion Cover (not present on the HP LaserJet 6L Pro)

EN

Product overview 21

Service.book Page 22 Thursday, September 14, 2000 11:15 AM

Service approach
Repair of the printer normally begins with the 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. Part numbers for all FRUs are located in Chapter 8 of this manual.

Parts Exchange Program
HP offers remanufactured assemblies for some selected parts. These are identified in Chapter 8 and
can be ordered through HP’s Commercial Service and Support Organization-Americas (CSSO-A), or
Commercial Service and Support Organization-Europe (CSSO-E).

Ordering parts
Field replaceable part numbers are listed in Chapter 8 of this manual. Replacement parts may be
ordered from HP's Commercial Service and Support Organization-Americas (CSSO-A), or
Commercial Service and Support Organization-Europe (CSSO-E).

Ordering related documentation
Table 1-6 on the following page lists part numbers and where to order related documentation.

Contacting HP to place an order
To order parts or related documentation, contact one of the following HP support organizations:
l

CSSO-A (Commercial Service and Support Organization-Americas)
(800) 227-8164 (U.S. Only)

l

CSSO-E (Commercial Service and Support Organization-Europe)
(49 7031) 142253

Table 1-6

Related documentation

Description

Part Number

CSSO-A

CSSO-E

HP LaserJet Family Quick Reference Service Guide

5021-0369

X

X

HP LaserJet 5L Printer User’s Manual

C3941-90901

X

HP LaserJet 6L Printer User’s Manual

C3990-90901

X

HP LaserJet 6L Pro Printer User’s Guide

C8060-90901

HP PCL5 Printer Language Technical Reference Information
Package

5010-3994

X

X

HP LaserJet Printer Family Paper Specifications Guide

5963-7863

X

X

LaserJet Basic Hardware Training Course

5961-0880

X

X

HP LaserJet 5L/6L/6L Gold/6L Pro Service and Support
Documentation and Training CD-ROM

C8060-60102
(English)

X

X

C8060-60103
(Simplified Chinese)

X

22 Product information

EN

Service.book Page 23 Thursday, September 14, 2000 11:15 AM

Technical assistance
HP Customer Care
Along with your product, you receive a variety of support services from Hewlett-Packard and our
support partners designed to give you the results you need, quickly and professionally.
Online Services: for 24hour access to information
over your Internet
connection, we suggest
these services.

World Wide Web URL: For information specific to the HP LaserJet 5L/
6L6L Gold/6L Pro products:

Obtaining Software

Visit: http://www.hp.com/go/support/ (site is in English)

http://www.hp.com/go/support/ (site is in English)

Call:
Australia:
China:
Argentina:
Mexico:
Spain:
Portugal:
German:
French (Europe):
Italian:
English:
Canada and US:
Taiwan:
Korea:
Greece, Ireland, and the UK:
Hong Kong SAR, Malaysia,
and Singapore:
India:
New Zealand:

+61 3 8877 8000
+86 10 6564 5959
(541) 778 8380
800-427-6684
+44 (0) 1429 520 012
+44 (0) 1429 890 466
+44 (0) 1429 863 353
+44 (0) 1429 863 343
+44 (0) 1429 890 466
+44 (0) 1429 865 511
(661) 257 5565
+888 (2) 2717 0055
+82 (2) 3270 0805
+44 (0) 1429 865 511
+65 740 4477
(91) (11) 682 6035
+64 9 356 6640

Call (1) (800) 538-8787 (U.S.) or (1) (800) 387-3154 (Canada).
HP Direct Ordering for
Accessories and Supplies
(U.S. and Canada):

EN

HP Support Assistant
compact disc
(U.S., Canada, Singapore,
Hong Kong SAR, Malaysia):

This support tool offers a comprehensive online information system
designed to provide technical and product information on HP products. To
subscribe to this quarterly service in the U.S. or Canada, call (1) (800)
457-1762. In Hong Kong SAR, Malaysia, or Singapore, call Fulfill Plus at (65)
740-4477.

HP Service Information
(U.S. and Canada):

To locate HP-authorized dealers, call (1) (800) 243-9816 in the U.S. or
(1) (800) 387-3154 in Canada.

Technical assistance 23

Service.book Page 24 Thursday, September 14, 2000 11:15 AM

Customer Care options worldwide
HP Customer Care and Product Repair Assistance for the U.S. and Canada:
Call (208) 323-2551 in the United States or (905) 206-4663 in Canada Monday through Friday 6 am to 10
pm and Saturday 9 am to 4 pm (Mountain Time) free of charge during the warranty period. However, your
standard long-distance phone charges still apply. Have your system nearby and your serial number ready
when calling.
If you know your printer needs repair, call 1-800-243-9816 to locate your nearest HP-authorized service
provider, or call 208-323-2551 for HP centralized service dispatch.
Post-warranty telephone assistance is available to answer your product questions. Call (1) (900) 555-1500
($2.50* per minute, U.S. only) or call 1-800-999-1148 ($25* per call, Visa or MasterCard, U.S. and
Canada) Monday through Friday from 7 am to 6 pm and Saturday from 9 am to 3 pm (Mountain Time).
Charges begin only when you connect with a support technician. *Prices subject to change.
European HP Customer Care and In-Country/Region Support
Open Monday through Friday 8:30-18:00 CET
HP provides a free telephone support service during the warranty period. By calling a telephone number
listed below, you will be connected to a responsive team waiting to help you. If you require support after
your warranty has expired, you can receive support for a fee through the same telephone number. The fee
is charged on a per-incident basis. When calling HP, have the following information ready: product name
and serial number, date of purchase, and description of the problem.
Israel:

+972 (0)9 9524848

Denmark:

+45 39 29 4099

Sweden:

+46 (0)8 619 2170

Spain:

+34 902 321 123

Portugal:

+351 21 3176333

Norway:

+47 22 11 62 99

Italy:

+39 02 264 10350

Austria:
Germany:

+43 (0) 7114 201080
+49 (180) 52 58 143

Switzerland:
English in Europe

+41 (0)848 80 11 11
+44 (0) 171 512 52 02

Belgium:
France:

+32 (0)2 626 8807
+33 (0)1 43 62 3434

Switzerland:

+41 (0)848 80 11 11

Finland:

+358 (0)203 47 288

Belgium:

+32 (0)2 626 8806 (Dutch)
+32 (0)2 626 8807 (French)

the Netherlands:

+31 (0) 20 606 8751

Ireland:
U.K.:
Greece:

+353 (0)1 662 5525
+44 (0)171 512 5202
+30 (0) 16196411

English in other
European countries:

+44 (0)171 512 52 02

In-country/region support
Open Monday through Friday 8:00-19:00
If you require telephone support, call the number below. If you require additional product repair services,
see “HP worldwide sales and service offices.”
Australia:
Hong Kong SAR:
Malaysia:

(61) (3) 8877-8000
800 96 7729
+60 3 295 2566

Taiwan:

+886 (2) 2717 0055

Korea:

(82) (2) 3270-0700

Argentina:

(541) 778 8380

Poland:

+48 22 519 06 00

Russia and the Ukraine:

China:

+64 9 356 6640
+65 272 5300

Mexico (Mexico City): 800-427-6684

+7 095 797 3520 (Moscow)
+7 812 346 7997 (St. Petersburg)
+7 (380-44) 490-3520 (Ukraine)

+86 (0)10 6564 5959

Hong Kong SAR:

800 96 7729

Hungary:

+365 (0)1 3821111

24 Product information

New Zealand:
Singapore:

EN

Service.book Page 25 Thursday, September 14, 2000 11:15 AM

HP worldwide sales and service offices
Argentina

Australia

Austria

Hewlett-Packard Argentina
Montañeses 2140
1428 Buenos Aires
Phone: (54) (1) 787-7115
Fax:
(54) (1) 787-7287

Hewlett-Packard Head office
Hewlett-Packard Australia Ltd.
31-41 Joseph Street
Blackburn, VIC 3130
Phone: (61) (3) 9272-2895
Fax:
(61) (3) 898-7831

Hewlett-Packard GmbH
Lieblgasse 1
A-1222 Vienna
Phone: (43) (1) 25000-555
Fax:
(43) (1) 25000-500

Service and Support
Hewlett-Packard
351 Burwood Hwy
Forest Hill
VIC 3131
Phone: (61) (3) 8877-5786

Belgium

China

Denmark

Hewlett-Packard Belgium S.A. NV
Boulevard de la Woluwe-Woluwedal
100-102
B-1200 Brussels
Phone: (32) (2) 778-31-11
Fax:
(32) (2) 763-06-13

China Hewlett-Packard Co. Ltd.
9/F, HP Building
No. 2 Dong San Huan Nan Lu
Chao Yang District
Beijing 100022, P.R. China
Phone: (86 10) 6564 3888

Hewlett-Packard A/S
Kongevejen 25
DK-3460 Birkerød
Denmark
Phone: (45) 3929 4099
Fax:
(45) 4281-5810

Customer Information Center:
Phone: (86 10) 6564-3888 or
(86 10) 6564-5959

Finland

France

Germany

Hewlett-Packard Oy
Piispankalliontie 17
FIN-02200 Espoo
Phone: (358) (9) 887-21
Fax:
(358) (9) 887-2477

Hewlett-Packard France
42 Quai du Point du Jour
F-92659 Boulogne Cedex
Phone: (33) (146) 10-1700
Fax:
(33) (146) 10-1705

Hewlett-Packard GmbH
Herrenberger Strasse 130
71034 Böblingen
Phone: (49) (0) 180 532-6222
(49) (0) 180 525-8143
Fax:
(49) (0) 180 531-6122

Greece

Hong Kong SAR

Hungary

Hewlett-Packard Hellas
62 Kiffisias Av.
Polis Center
Maroussi
151 25 Athens
Greece
Phone: (30) (1) 619-6411
Fax:
(30) (1) 619-6512

Hewlett-Packard Asia Pacific Ltd
25/F City Plaza One
1111 King’s Road, Taikoo Shing,
Hong Kong SAR
Phone; (8 52) 2599-7777
Fax:
(8 52) 2506-9776

Hewlett-Packard Magyarország Kft.
Neumann János u. 1
H-1111 Budapest
Phone: (36) (1) 382-6666
Fax:
(36) (1) 382-6777

Hardware Repair Center:
Phone: (8 52) 2599-7000
Extended Warranty Support:
Phone: (8 52) 2599-7000

Hardware Repair Center:
Phone: (36) (1) 343-0312
Customer Information Center:
Phone: (36) (1) 343-0310

Customer Information Center:
Phone: 8 52) 2599-7066

EN

Technical assistance 25

Service.book Page 26 Thursday, September 14, 2000 11:15 AM

India

Indonesia

Israel

Hewlett-Packard India Ltd.
Chandiwala Estate
Maa Anandmai Marg
Kalkaji, New Delhi - 110019
Phone: (91 11) 682-6000,
(91 11) 682-6035
Fax:
(91 11) 682-6030

Hewlett-Packard Berca Servisindo
Sentral Senayan 1, 8th floor
Jl. Asia Afrika no. 8
Jakarta 10270
Indonesia
Phone: (62 21) 350-3408

Hewlett-Packard Israel Ltd.
11, Hashlosha St.
Tel Aviv 67060
Phone: (972) (3) 5 38 03 00
Fax:
(972) (3) 5 38 03 51
Customer Care Center
Phone: (972) (9) 9 52 48 48

Hardware Repair Center and
Extended Warranty Support:
Phone: (91 11) 682-6042

Hardware Repair Center and
Extended Warranty Support:
Phone: (62 21) 3483-4567
Fax:
(62 21) 352-2048

Customer Information Center:
Phone: (91 11) 682-6000 or
(91 11) 682-6035

Customer Information Center:
Phone: (62 21) 550-5408

Italy

Korea

México

Hewlett-Packard Italiana SpA
Via Giuseppe di Vittorio, 9
Cernusco Sul Naviglio
I-20063 (Milano)
Phone: (39) (2) 921-21
Fax:
(39) (2) 921-04473

Hewlett-Packard Korea, Ltd.
HP Korea House,
23-6 Yoido-dong,
Youngdeungpo-gu, Seoul 150-724,
Korea
Yoido P.O. Box 595
Phone: (82) (2)2199-0114

Hewlett-Packard de México, S.A. de
C.V.
Prolongación Reforma No. 700
Lomas de Santa Fe
01210 México, D.F.
Phone: 01-800-22147
Outside Mexico City
Phone: 01 800-90529

Middle-East Region

Netherlands

New Zealand

Hewlett-Packard Middle-East
P.O.-Box 17295
Jebel Ali Free Zone
Dubia, UAE
Phone: (97) 14 88 15 456
Fax:
(97) 14 88 14 529

Hewlett-Packard Nederland BV
Startbaan 16
1187 XR Amstelveen
Postbox 667
NL-1180 AR Amstelveen
Phone: (31) (0) 20 547-6666
Fax:
(31) (0) 20 547-7755

Hewlett-Packard (NZ) Limited
Ports of Auckland Building
Princes Wharf, Quay Street
P.O. Box 3860
Auckland
Phone: (64) (9) 356-6640
Fax:
(64) (9) 356-6620
Hardware Repair Center and Extended
Warranty Support:
Phone: (64) (9) 0800-733547
Customer Information Center:
Phone: (64) (9) 0800-651651

Norway

Poland

Portugal

Hewlett-Packard Norge A/S
Postboks 60 Skøyen
Drammensveien 169
N-0212 Oslo
Phone: (47) 2273-5600
Fax:
(47) 2273-5610

Hewlett-Packard Polska
Al. Jerozolimskic 181
02-222 Warszawa
Phone: (48-22) 608-7700
Fax:
(48-22) 608-76-00

Hewlett-Packard Portugal
Quinta da Fonte
Edifico Bartolomeu Dias
Porto Salvo
2780-667 Oeiras
Portugal
Phone: (351) (21) 4 82 85 00
Fax:
(351) (21) 4 41 70 02

26 Product information

EN

Service.book Page 27 Thursday, September 14, 2000 11:15 AM

Russian Federation

Singapore

Spain

Hewlett-Packard Company
Representative Office
Kosmodamianskaya naberezhnaya 52,
Building 1
113054 Moscow
Phone: (7) (0) 95 797-3500
Fax:
(7) (0) 95 797-3501

Hewlett-Packard Singapore
(Service) Pte Ltd
438A Alexandra Road
Blk A Alexandra Technopark
#02-08 Singapore 119967
Phone: (65) 275-3888
Fax:
(65) 273-1146

Hewlett-Packard Española, S.A.
Carretera de la Coruña km 16.500
E-28230 Las Rozas, Madrid
Phone: (34) 91-6311600
Fax:
(34) 91-6311830

Extended Warranty Support:
Phone: (65) 374-6441
Customer Information Center:
Phone: (65) 272-5300

Sweden

Switzerland

Ukraine

Hewlett-Packard Sverige AB
Skalholtsgatan 9
S-164 97 Kista
Phone: (46) (8) 444-2000
Fax:
(46) (8) 444-2666

Hewlett-Packard (Schweiz) AG
In der Luberzen 29
CH-8902 Urdorf/Zürich
Phone: (41) (0848) 88 44 66
Fax:
(41) (1) 735 77 00

Hewlett-Packard Trading S.A.
14, Bekhterevskiy Pereulok, Block E
04053 Kiev
Phone: (380) 44 490 61 20
Fax:
(380) 44 490 61 21

Extended Warranty Support:
Phone: (41) (0848) 80 11 11

United Kingdom
Hewlett-Packard Ltd.
Cain Road
Bracknell
Berkshire RG12 1HN
Phone: (44) (0) 8705 47 47 47
(44) (0) 207 512 5202
Fax:
(44) (134) 436-3344

EN

Technical assistance 27

Service.book Page 28 Thursday, September 14, 2000 11:15 AM

Warranty
1

HP warrants to you the end-user customer, that HP hardware, accessories and supplies, will be
free from defects in materials and workmanship after the date of purchase, for the period
specified above. If HP receives notice of such defects during the warranty period, HP will, at its
option, either repair or replace products which prove to be defective.

2

HP warrants to you that HP software will not fail to execute its programming instructions after the
date of purchase, for the period specified above, due to defects in material and workmanship
when properly installed and used. If HP receives notice of such defects during the warranty
period, HP will replace software media which does not execute its programming instructions due
to such defects.

3

HP does not warrant that the operation of HP products will be uninterrupted or error free. HP
products may contain remanufactured parts equivalent to new in performance or may have been
subject to incidental use. If HP is unable, within a reasonable time, to repair or replace any
product to a condition as warranted, you will be entitled to a refund of the purchase price upon
prompt return of the product. Warranty does not apply to defects resulting from (a) improper or
inadequate maintenance or calibration, (b) software, interfacing, parts or supplies not supplied
by HP, (c) unauthorized modification or misuse, (d) operation outside of the published
environmental specifications for the product, or (e) improper site preparation or maintenance.

4

ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE IS LIMITED TO THE DURATION OF THE EXPRESS WARRANTY SET FORTH
ABOVE. Some states or provinces do not allow limitations on the duration of an implied warranty,
so the above limitation or exclusion might not apply to you. This warranty gives you specific legal
rights and you might also have other rights that vary from state to state, province to province, or
country to country.

5

THE REMEDIES IN THIS WARRANTY STATEMENT ARE YOUR SOLE AND EXCLUSIVE
REMEDIES. EXCEPT AS INDICATED ABOVE, IN NO EVENT WILL HP BE LIABLE FOR LOSS
OF DATA OR FOR DIRECT, SPECIAL, INCIDENTAL, CONSEQUENTIAL (INCLUDING LOST
PROFIT), OR OTHER DAMAGE, WHETHER BASED IN CONTRACT, TORT, OR OTHERWISE.
Some states or provinces do not allow the exclusion or limitation of incidental or consequential
damages, so the above limitation or exclusion may not apply to you.

Hardware service during the warranty period
If your hardware should fail during the warranty period, HP offers the following support options:
l

HP Authorized Service Provider: You can return your printer to a local authorized service dealer.

l

HP Repair Services: You can return your printer to an HP repair office.

When sending equipment, we recommend insuring the equipment for shipment. Also include a copy
of your proof of purchase.
CAUTION

Shipping damage as a result of inadequate packaging is the customer’s responsibility. Use the original
packing materials whenever possible.

Hardware service after the warranty period
If your hardware fails after the warranty period, contact an authorized Hewlett-Packard Dealer Repair
Center or a designated Hewlett-Packard Repair Center. If you have a Hewlett-Packard Maintenance
Agreement, request service under your agreement.

28 Product information

EN

Service.book Page 29 Thursday, September 14, 2000 11:15 AM

HP LaserJet Toner Cartridge warranty
HP LaserJet Toner Cartridges are warranted to be free from defects in materials and workmanship
until the HP toner is depleted. You know your HP toner is depleted when you begin to see faded or
light type on your printed page.
The warranty, extended for the life of the cartridge, covers any defects or malfunctions in your new
Hewlett-Packard Toner Cartridge. HP will, at HP’s option, either replace products which prove to be
defective or refund your purchase price.
In the event the cartridge proves to be defective, attach a printout sample illustrating what the
defective cartridge is printing and return to the place of purchase. IN NO EVENT SHALL HEWLETTPACKARD COMPANY BE LIABLE FOR ANY INCIDENTAL CONSEQUENTIAL, SPECIAL,
INDIRECT, PUNITIVE, OR EXEMPLARY DAMAGES OR LOST PROFITS FROM ANY BREACH OF
THIS WARRANTY OR OTHERWISE.

Voltage conversions
HP LaserJet printers are manufactured to different specifications for different countries. Because of
these differences, HP does not recommend transporting products sold within one country to another
country.
In addition to the 115-220 voltage environment concerns, the country of final destination may have
different import and export restrictions, power frequencies, and regulatory requirements.
Note

The HP LaserJet family printers must be serviced by an authorized repair depot or reseller within the
country where the printer was originally purchased.
Because of the different specifications and warranty coverage limitations, Hewlett-Packard does not
offer a conversion, or support the conversion, of HP LaserJet family printers. We advise those
customers planning to transport equipment to different countries to purchase the products in the
country of final destination.

EN

Warranty 29

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30 Product information

EN

Service.book Page 31 Thursday, September 14, 2000 11:15 AM

2

Site requirements

Chapter contents
Site requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Operating environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Printer space requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
The HP C3906A/F Toner Cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Storage conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Storing opened toner cartridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Toner cartridge handling suggestions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

EN

Chapter contents 31

Service.book Page 32 Thursday, September 14, 2000 11:15 AM

Site requirements
Operating environment
The environmental requirements listed in the table below must be maintained to ensure the proper
operation of this printer.
Table 2-1

Environmental requirements

LaserJet 5L/6L/6L Pro & Cartridge

Operating

Storage

Temperature

50 to 90.5° F (10 to 32.5° C)

32 to 104° F (0 to 40° C)

Humidity

20 to 80% RH
(with no condensation)

10 to 80% RH
(with no condensation)

Consider the following points before installing the printer:
l

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

l

Install on a hard, flat and continuous surface, with all four printer feet level. Do not install on
carpet or other soft surfaces.

l

Ensure adequate power is supplied. Printer power requirements are listed under
“Specifications” in Chapter 1. Uninterruptible power supplies (UPS) should not be used with this
printer.

l

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.

l

Install with enough space around the printer for proper access and ventilation.
(See Figure 2-1.)

l

Install printer away from the direct flow of exhaust from air ventilation systems.

32 Site requirements

EN

Service.book Page 33 Thursday, September 14, 2000 11:15 AM

Printer space requirements

Legal (paper guide not present on HP LaserJet 6L Pro)

227.5 mm

327.5 mm

445.3 mm

A4
Letter

311.2 mm
Figure 2-1

Printer space requirements

Table 2-2

Printer dimensions

Description

Dimension

Width

335.5 mm (13.2 inches)

Depth

311.2 mm (12.3 inches)

Height
(storage)
(operational)

227.5 mm (8.9 inches)
372.7 mm (14.6 inches)1

Weight (with toner cartridge)

7.2 kg (15.9 pounds)

Toner Cartridge
1.
2.

EN

335.5 mm

weight2

0.7 kg (1.5 pounds)

With Letter Input Assembly extended.
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.

Printer space requirements 33

Service.book Page 34 Thursday, September 14, 2000 11:15 AM

The HP C3906A/F Toner Cartridge
Toner Cartridges contain components that are sensitive to light, temperature, and humidity. Follow
the recommendations in this section to ensure the highest quality and longest life of HP Toner
Cartridges.
Keep the printer within the following environmental conditions for optimum performance.

Storage conditions
The Toner Cartridge is affected by its environment. Packaging protects the Toner Cartridge from light
and increases its storage life. It is important to store the cartridge in its original packaging until the
cartridge is ready to be installed in the printer.
When storing the Toner Cartridge in a warehouse or work area, make sure the storage place meets
the conditions specified in Table 2-1.

Storing opened toner cartridges
Because the cartridge does not have a shutter to cover the laser beam access slot, it should be kept
inside the printer until empty. Toner Cartridges that have had the toner sealing tape removed are also
more vulnerable to environmental extremes (such as high humidity).
If the toner cartridge must be removed from the printer, always store the cartridge:
l

Inside the protective bag in which it was originally packaged.

l

In a dark cabinet, away from direct sunlight.

l

Correct side up and in a horizontal position (not standing on end).

l

At a temperature between 32° to 104° F (0° and 40° C).

l

Away from ammonia or other organic solvent fumes.

CAUTION

Never ship the printer with a Toner Cartridge installed. Excessive vibration during shipping can cause
toner to leak, contaminating the printer. Never expose the Toner Cartridge to direct sunlight or to room
light for more than a few minutes. Bright light and direct sunlight can permanently damage a Toner
Cartridge.

Note

The C3906F Toner Cartridge is designed specifically for use in the environmental conditions of the
Asia Pacific region and is only available in that region.

34 Site requirements

EN

Service.book Page 35 Thursday, September 14, 2000 11:15 AM

Toner cartridge handling suggestions
l

Figure 2-2

EN

Before installing a cartridge, distribute the toner evenly by rotating the cartridge back and forth
five to six times. (See Figure 2-2.) Repeat this action when toner begins to run low.

Toner cartridge distribution
l

Do not touch the surface of the Photosensitive Drum in the cartridge. Protect the drum from light
and contamination.

l

Do not expose the cartridge to unnecessary vibrations or shock.

l

Do not expose the Photosensitive Drum to strong light. Blurred areas on the page may indicate
that the drum has been exposed to light for too long. This causes permanent damage to the
Photosensitive Drum. Replace the cartridge.

l

Never manually rotate the drum, especially in the reverse directions; internal damage and toner
spills may result.

l

Remove the Toner Cartridge before shipping the printer.

The HP C3906A/F Toner Cartridge 35

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36 Site requirements

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3

Operating overview

Chapter contents
Using the Control Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Control Panel layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Indicator lights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
The Control Panel Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Printing a self-test page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Continuous self test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Printing an engine test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Resetting the printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
To reset the printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

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Using the Control Panel
Control Panel layout
The Control Panel is located on the front of the printer and consists of one button and three indicator
lights.

ERROR (Amber)
DATA (Green)
READY (Green)

These lights can be in only one of the following states:
OFF

ON

Blinking

Indicator lights
The Indicator Lights provide a quick way to check the printer’s status.
Table 3-1

Indicator Lights (1 of 2)

When this indicator: Looks
like this:

It means this:

No lights are on The printer is in
or blinking
SleepMode or has been
disconnected.

If you want to print, press and release the Control
Panel Button or send the print job. If no response,
check the power cord.

On

The printer is ready to print. No action is necessary. However, you can print a
test page by pressing and releasing the Control
Panel button.

Blinking

Print job in progress.

Data Light and Unprinted data are in the
Ready Light
printer.
both remain on

38 Operating overview

Do this:

Let job finish printing.

Press and release the Control Panel Button to
print the remaining data. See “Service and error
messages” in Chapter 7.

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Table 3-1

Indicator Lights (Continued) (2 of 2)

When this indicator: Looks
like this:

It means this:

Do this:

Data Light is
blinking

Printer is in Manual Feed
mode.

Make sure that the correct paper is loaded. Then,
press and release the Control Panel Button to
print.

Error Light
remains on

Printer is out of paper.

Add paper.

Printer’s EP door is open.

Close the door.

Printer has a paper jam.

Clear the jam and resume printing.

Toner Cartridge is either
missing or not installed
correctly.

Install a cartridge, being careful to position it
correctly.
NOTE: The HP LaserJet 6L Pro has no
mechanism for detecting the presence of a Toner
Cartridge. If the Toner Cartridge is missing, the
Error Light will remain off. Printing without a Toner
Cartridge installed may cause a paper jam.
If the Error Light remains lit after checking for
these problems, and there’s no paper jam,
disconnect the power for 10 seconds, then
reconnect to the power source. If, after taking
these actions, the light remains on, refer to
Chapter 7, “Troubleshooting.”

Error Light is
blinking

The page may have too
much data or may be too
complex for the printer’s
memory capacity.

Press and release the Control Panel Button to
continue printing. There may be some data loss
on the page.
Hint: To avoid this in the future:
1. See your printer driver help for more
suggestions regarding printer memory usage.
2. Reduce resolution to 300 dpi with your
software.
3. Install additional printer memory. (See Chapter
6 for information on installing additional memory.)

All lights remain Printer is indicating either
on
an internal problem or a
fatal error.

1. If you have added an additional memory card,
try removing it.
2. Disconnect the power for 10 seconds, then
reconnect it.
3. If all of the lights come on steadily again, try
disconnecting the power for 15 minutes.
If this error remains after completing the tasks
above, see Chapter 7, “Troubleshooting.”

All lights are
blinking

Printer is initializing or
resetting (6L Pro)

No action is necessary.
See Chapter 7, “Troubleshooting.”

Memory card may be
slower than 70 nsec
(5L/6L)

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The Control Panel Button
Depending on what state the printer is in, pressing the Control Panel Button allows you to control
printing tasks by either starting or resuming a printer function. Use the Control Panel Button to
accomplish the following tasks:
Table 3-2

Control Panel Button usage

Function

Lights

Action

Result

Wake Up

All lights are off while
plugged into power source

Briefly push and release the The printer will wake up to a
button.
ready state.

Self Test

Ready (bottom) Light is on
and the other lights are off.

Briefly push and release the Prints a self-test page.
button.

Printer Reset

The Ready (bottom) Light
Press and hold the button
will remain lit, if there are no until the three Front Panel
printer errors.
Lights blink quickly in
succession.

The reset will return the
printer to the factory default
settings. This clears all data
from memory, including any
downloaded fonts and
macros.

Resume (from Manual The Data (middle) Light
Feed)
blinks.

Briefly push and release the Override manual feed to
button.
print from paper cassette.

Continue (from
memory error)

Error (top) Light blinks.

Briefly push and release the Allows the printer to recover
button.
and continue printing the
job.

Form Feed

The Data (middle) Light and Briefly push and release the The remaining data in
the Ready (bottom) Light
button.
printer memory will print.
both remain on.

40 Operating overview

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Printing a self-test page
A self-test page can be useful in troubleshooting printer problems and determining which fonts have
been downloaded to the printer.

Figure 3-1

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Self-test page for HP LaserJet 5L

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Figure 3-2

Self-test page for HP LaserJet 6L

42 Operating overview

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Figure 3-3

Self-test page for HP LaserJet 6L Pro
The self-test page lists the current printer configuration. (If any fonts have been downloaded to the
printer a second page will print.)
To print a self-test page:

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1

Make sure the Ready (bottom) Light is on, and all other lights are off. Wake up the printer if
necessary by pressing the Control Panel Button.

2

Briefly press and release the Control Panel Button. The Data (middle) Light comes on, the
Ready (bottom) Light blinks. Wait for a self-test page to print.
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Continuous self test
Note

The HP LaserJet 6L Pro does not support the continuous self test.
A continuous self test can be useful for troubleshooting paper path and other problems. To print a
continuous self test:
1

Disconnect the printer from the power source.

2

Press and hold down the Control Panel Button while connecting power.

3

Continue holding the button for about five seconds.
All lights will illuminate at once, then each will light in sequence.

Note

4

Release the button. The printer conducts its internal diagnostics routine, then prints the self-test
page continuously until stopped.

5

To stop the continuous self test (and reset the printer), press and hold the Control Panel Button
for a few seconds until all lights begin lighting in sequence once again.

The self test does not print at the printer’s rated speed of 4 ppm (HP LaserJet 5L) or 6 ppm
(HP LaserJet 6L). The engine test prints at the printer’s rated speed.

Printing an 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. Consequently, this test is useful for isolating
engine printer problems. For the HP LaserJet 5L and 6L printers, the engine test prints a full page of
vertical lines down the entire printable area. For the HP LaserJet 6L Pro, the engine test prints a full
page of horizontal lines across the entire printable area. These engine test pages are useful for
checking and adjusting registration.
Note

Perform the engine test with the printer covers in place, as shown in Figure 3-6. Refer to “Engine Test”
in Chapter 7 for the engine test procedure.

Engine test printout
(5L/6L)

Figure 3-4

Engine test printout
(6L Pro)

Engine test button

Engine test button

44 Operating overview

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Resetting the printer
Resetting the printer accomplishes the following:
l

Clears all data from the printer’s memory (including unprinted data, downloaded fonts, and
macros).

l

Stops any printing that is taking place and ejects the page.

l

Removes some error conditions.

l

Resets the printer to its factory default settings.

To reset the printer
Press and hold the Control Panel Button until the three Control Panel Lights blink quickly in
succession (about five seconds), then let go of the button. After resetting, the Ready Light will
remain lit if there are no printer errors. (Make sure there is paper in the printer or the Error Light will
remain lit.)

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46 Operating overview

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4

Printer maintenance

Chapter contents
Life expectancy of consumables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Toner cartridge life. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Saving toner with EconoMode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Refilled toner cartridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Recycling toner cartridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Cleaning the printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Cleaning printer components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Cleaning spilled toner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

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Life expectancy of consumables
Always inspect the components listed in Table 4-1 for wear when servicing the printer. Replace these
components as needed, based on printer failures or wear, not strictly on usage.
Table 4-1

Life expectancy of consumables

Description

Estimated Life Remarks
(pages)

Toner cartridge (user replaceable)

2,5001

When print becomes faint, shake cartridge to
distribute remaining toner.

Transfer roller

50,000

May affect print quality and/or paper
movement.

Paper pickup assembly

50,000

Look for glazing and/or cracks.

Separation pad and sub pads

50,000

May affect paper movement.

Heating Element 100-120 V, 50/60 Hz

50,000

May affect print quality and/or paper
movement. Look for marks on pressure roller
or upper Teflon sleeve.

220-240 V, 50 Hz

Pressure Roller
1.

The estimated toner cartridge life is based on Letter or A4 size paper with an average of five percent toner coverage and a medium density setting. Toner cartridge life can be extended further by conserving toner using the printer’s EconoMode feature.

48 Printer maintenance

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Toner cartridge life
The toner cartridge has been designed to simplify the replacement of the printer’s major parts. The
toner cartridge contains the printing mechanism and a supply of toner. When using a typical wordprocessing application, a toner cartridge will print approximately 2500 pages where the text covers
about five percent of the page.

Figure 4-1

Five percent text coverage
When regularly printing pages with less coverage, such as short memos, a toner cartridge should
print over 2,500 pages. However, if routinely printing very dense print, the cartridge will not print a full
2,500 pages.

Note

For best results, always use a toner cartridge before the expiration date stamped on the toner cartridge
box.

Saving toner with EconoMode
Toner cartridge life can be extended dramatically by using the EconoMode printing feature of the
printer. EconoMode uses approximately 50 percent less toner than normal printing. The printed page
is much lighter and is adequate for printing drafts or proofs. EconoMode can be set through your
printer driver. See Chapter 5 for more information.
Note

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Some software applications may refer to this as “draft mode.”

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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, we do not recommend their use. The reasons for this
are:
l

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.

l

Hewlett-Packard also cannot predict what the long-term reliability effect on the printer is from
using different toner formulations found in refilled cartridges.

l

Hewlett-Packard has no control over the actual print quality of a refilled toner cartridge. The print
quality of HP LaserJet toner cartridges influences the customer’s perception of the printer.

Repairs resulting from the use of refilled toner cartridges are not covered under the HP warranty or
maintenance contract.

Recycling toner cartridges
In order to reduce waste, Hewlett-Packard has adopted a recycling program for used toner
cartridges. Plastics and other material are recycled. Cartridge components that do not wear out are
reused. HP pays the shipping costs from the user to the recycling plant. To join this recycling effort,
follow the instructions inside the toner cartridge box.

50 Printer maintenance

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Cleaning the printer
To maintain the print quality, thoroughly clean the printer:
l

Every time you change the toner cartridge.

l

After printing approximately 2,500 pages.

l

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, unplug the printer to avoid shock hazard.
When cleaning around the front door area, avoid touching the heating element. It may be HOT.
(For heating element location, see Figure 6-14.)

Cleaning printer components
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.

Table 4-2

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Cleaning printer components

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.

Exit Roller

Use a water-dampened lint-free cloth.(For location, see Figure 6-8.)

Fuser Exit Roller

Use a water-dampened lint-free cloth. (For location, see Figure 6-18.)

Pickup Roller

Use a lint-free cloth dampened with isopropyl alcohol. (For location, see
Figure 6-25.)

Pressure Roller

Use a dry lint-free cloth. (For location, see Figure 6-16.)

Transfer Roller

Use a dry, lint-free cloth. DO NOT TOUCH with your fingers. (For location,
see Figure 6-30.)

Separation Pad

Use a dry lint-free cloth. (For location, see Figure 6-31.)

Delivery Assembly

Use a water-dampened lint-free cloth. (For location, see Figure 6-10.)

Static Eliminator Teeth

Use compressed air. (See Figure 4-2 on the following page for static
eliminator teeth location.)

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Figure 4-2

Static Eliminator Teeth (located in front of the transfer roller)

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 microfine particle filter.
Note

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

52 Printer maintenance

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5

Functional overview

Chapter contents
Basic printer functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
DC Controller/power system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Print engine control system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Power system (on DC Controller PCA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Formatter system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
CPU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Read only memory (ROM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Random access memory (RAM). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Parallel interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Resolution Enhancement technology (REt) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
EconoMode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Memory Enhancement technology (MEt) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Enhanced I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Page Protect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
PJL overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Image formation system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Toner cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Step 1: Drum cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Step 2: Drum conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Step 3: Image writing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Step 4: Image developing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Step 5: Image transferring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Step 6: Image fusing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Paper feed system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Paper jam detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Basic sequence of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

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Basic printer functions
This chapter presents a generalized functional overview of the printer and the printing processes.
The following printer systems are discussed:
l

DC Controller System/ Power System

l

Formatter System

l

Image Formation System

l

Paper Feed System

l

Laser/Scanner System

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

Laser/Scanner System

Formatter System
Control
Panel

Formatter

Laser
Diode

DC Controller/Power System

BD
Circuit

DC Controller
Scanner
Motor

Primary
Charging
Roller

Cleaner
Fusing
Assembly

Photosensitive
drum
Transfer
Charging
Roller

Single Sheet Input Slot

Front Output Slot

Image Formation
System

Developing
Unit

Paper Input Tray

Paper Output Bin

Scanning Mirror

Pickup
Unit

Pick Up/Feed System

Figure 5-1

Printer functional block diagram

54 Functional overview

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DC Controller/power system
The DC Controller PCA coordinates all print engine activities, drives the laser, and coordinates print
data from the Formatter PCA with the image formation process. The DC Controller also includes both
AC and DC power supply and distribution circuitry. The DC Controller controls the following systems
and functions:
l

Print Engine Control
• Laser and Scanner Drive
• Paper Motion Photosensors (Paper Out, Paper Registration, and Paper Exit Sensors)
• Motor

l

Power System
• AC Power Distribution
• DC Power Distribution
• Overcurrent/Undervoltage Protection
• SleepMode
• High Voltage Power Distribution

Figure 5-2 shows the various DC controller loads.

Formatter
PCA

DC Controller

Laser/Scanner
Assembly

CPU

Laser Diode

Toner Cartridge
Delivery
Paper
Sensor

Memory

Charging Roller
Developing Roller
Bias

HV Power
Supply

Transfer Roller
I/O
Main Motor
Drive

Power
Supply
AC Driver

Control Panel

Figure 5-2

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Fuser
Drive

Motor

Fusing Assembly

LV Power
Supply

Sensors/Solenoid

DC Controller loads

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Print engine control system
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 solenoid with
the paper movement process, refer to “Paper feed system” later in this chapter.

12 V shutoff switch
The 12 volt DC power shutoff switch, Switch 101, located on the top of the printer, is activated by the
printer door. The front door must be closed before the printer can resume printing.

Engine test switch
The Test Print, Switch 201, located on the DC Controller, is activated manually through an access
hole at the front of the printer. This switch causes the print engine to perform a self-test diagnostic
which bypasses the Formatter PCA and prints a full page of black vertical lines. This test is useful for
troubleshooting printer problems because it isolates the print engine from the Formatter PCA. (See
Chapter 7, “Troubleshooting,” to learn more about how to perform an engine test.)

Motor
The Motor is controlled by the DC Controller PCA. The Motor provides all of the printer’s paper
movement.

Power system (on DC Controller PCA)
The AC, DC, and high voltage power supply circuits are all contained within the DC Controller PCA.

AC power distribution
The AC power circuitry supplies AC voltage whenever the power cord is connected to the AC power
source. AC voltage is distributed to the DC power supply circuitry and to the AC driver circuitry, which
controls AC voltage to the fusing assembly’s heating element.

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DC power distribution
The DC power distribution circuitry, located on the DC Controller PCA, distributes +5 V DC and +12
V DC as follows:
+5 V DC

l
l
l
l

+12 V DC:

l
l

Motor
Scanner Motor
Solenoid

l

High Voltage Power Supply

l

+12 VA DC

Formatter PCA
Photosensors
DC Controller Circuitry
Laser/Beam Detect Circuitry

Overcurrent/overvoltage protection
There are two overvoltage/overcurrent devices in this printer:
l

Fuse F101 provides overcurrent protection for the fusing system circuitry. To check or replace the
fuse requires the removal of the DC Controller. Fuse 102 (found only on 110V units) provides
overcurrent protection to the printer DC power supply circuitry.

l

In addition, the +12V DC and +5V DC power circuitry contains an overcurrent protection circuit
that automatically shuts off the output voltage when an overcurrent condition occurs due to a
short or abnormal voltage on the load side.

SleepMode
Instead of a power switch, the printer has a SleepMode function. After the printer has been idle for 15
minutes, it turns itself off by shifting to SleepMode. The Control Panel lights remain off, and the
printer retains all printer settings and downloaded fonts and macros while in SleepMode.
The printer exits SleepMode and all of the lights power on when any of the following occur:

Note

l

A job is received.

l

The Control Panel Button is pressed.

l

The printer front door is opened.

The printer will not enter SleepMode if there is a printer error.

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 DC Controller 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.
High voltage is disabled when the printer’s EP Door is open (i.e., switch SW101 is open).

EN

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Formatter system
The Formatter PCA is responsible for the following:
l

Receiving and processing print data from the printer interface.

l

Monitoring Control Panel Button and relaying printer status information.

l

Developing and coordinating data placement and timing with the print engine.

l

Storing font information.

l

Communicating with the host computer through the Bi-Directional Interface.

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.
On the HP LaserJet 5L and 6L, the Formatter PCA also provides mounting locations for additional
memory.

CPU
The Formatter PCA incorporates a microprocessor operating at a minimum of 24 MHz.

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 stores printing and downloaded font information received from the host system and
temporarily stores a full page of print image data before the data is sent to the print engine. (See
“Page Protect” later in this chapter.) For the HP LaserJet 5L and 6L printers, memory capacity can be
increased by adding a DRAM memory card to the Formatter PCA. Note that adding memory may
also increase print speed when printing complex graphics. The HP LaserJet 6L Pro does not support
memory expansion or the use of a JEDIA card.

Parallel interface
The Formatter PCA receives incoming data through its Bi-Tronics interface. 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. This interface is IEEE1284 compliant.

Control Panel
Status LED lights
The Formatter uses three LEDs mounted under the printer cover to communicate printer status to the
user. Refer to “Using the Control Panel” in Chapter 3 and “Printer Error Troubleshooting” in Chapter 7
for more information on the lights.

Control Panel Button
The Control Panel Button is used for such functions as self test, reset, and to display error codes.
Refer to “Using the Control Panel” in Chapter 3 for more information on the Control Panel Button.

58 Functional overview

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Resolution Enhancement technology (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 some software applications. Available settings are On or Off.

EconoMode
The EconoMode setting uses approximately 50 percent 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 through some software
applications. The default setting is Off.

Normal mode,
medium density

EconoMode,
medium density

Figure 5-3

EconoMode vs. Normal Mode

Note

EconoMode does not affect print speed or memory usage.

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. MEt is only available in PCL mode
and is not customer selectable. When using the host-based driver, your PC handles memory
management.

Enhanced I/O
The Enhanced I/O feature allows printer memory to be used for storing data received from the host
computer. When Enhanced I/O is enabled, you can send more data to your printer in shorter
amounts of time, which allows you to return to your application sooner. Enhanced I/O has the
following options:
l

Auto allows the printer to use Enhanced I/O memory allocation to increase the speed of data
transfer from the host computer to the printer, if necessary.

l

Off uses the minimum amount of printer memory for storing data sent from the host computer.

Enhanced I/O is only available in PCL mode. When using the host-based driver (HP LaserJet 5L and
6L only), your PC handles memory management.

EN

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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, the page 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 an 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:
l

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 status.

l

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.

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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:
Step 1 Drum Cleaning
Step 2 Drum Conditioning
Step 3 Image Writing
Step 4 Image Developing
Step 5 Image Transferring
Step 6 Image Fusing

Electrostatic Latent Image Formation Block
Flow of Paper
2. Scanning Exposure

3. Developing

Drum Cleaning
Block

7. Drum Cleaning

Multi-Purpose Tray

1. Primary Charging

Manual Feeding Slot

Direction of Drum

Paper Delivery

Fuser Block
5. Separation

4. Transfer

Registration

6. Fusing

Transfer Block

Figure 5-4

Image formation block diagram

Toner cartridge
As the “heart” of the Image Formation System, the toner cartridge 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,
which wear, degrade, or are consumed in the replaceable toner cartridge, eliminates the need for a
service call when replacement is required. The special photosensitive properties of the drum allow
an image to be formed on the drum surface and then transferred to paper.
CAUTION

EN

The printer’s toner cartridge does not include a light-blocking shutter. Be careful to avoid exposing the
drum to light, which can permanently damage the drum. Protect the cartridge whenever removing it
from the printer.

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Step 1: 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 wiped off and stored in the waste toner receptacle.

Step 2: 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. An AC bias is applied to
the roller to erase any residual charges from any previous image. 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.

Step 3: Image writing
During the writing process, a modulated laser diode projects the beam onto a rotating scanning
mirror. As the mirror rotates, the beam reflects off the mirror, first through a set of focusing lenses, off
a mirror, and finally through a slot in the top 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.
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. 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 the next scan line of
data.

Step 4: Image developing
At this stage of the process, the latent electrostatic image is present on the drum. 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.

Step 5: 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 paper. After separation, the drum is cleaned and
conditioned for the next image.

Step 6: 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 element and a soft pressure roller.
This melts the toner and presses it into the paper.

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Paper feed system
Both the Paper Input Tray and the Single Sheet Input Slot merge into one, main input area. Paper
placed in either of these areas enables the Paper Out Sensor (sensor 202), which informs the DC
Controller that paper is present.
When the printer receives a print job and is ready to print, the DC Controller enables the Laser/
Scanner Assembly and the Motor. Paper motion begins when the DC Controller energizes solenoid
SL1. This causes the paper pick up roller to rotate once. Two actions occur as a result of this rotation.
First, the paper kick plate pushes the paper against the pick-up roller. Second, the pick-up roller
grabs the top sheet and advances it to the Feed Assembly drive rollers. To ensure that only one
sheet is fed, a main separation pad, along with two subpads, hold the remainder of the stack in place.
The feed assembly drive rollers advance the paper to the Paper Registration photosensor (PS203).
This sensor informs the DC Controller of the exact location of the paper’s leading edge, so that the
image being written on the photosensitive drum can be precisely positioned on the page. The feed
assembly drive rollers then advance the paper to the transfer area where the toner image on the
photosensitive drum is transferred to paper.
After the image is transferred, the paper enters the fusing assembly where heat from the fuser and
pressure from the Pressure Roller permanently bond the toner image to paper. The Paper Exit
Sensor (PS201) determines that paper has successfully moved out of the fusing area. The fusing
assembly exit rollers deliver paper to either the Output Paper Bin or the Front Output slot, depending
upon the position of the Face-up/Face-down lever.
Figure 5-5 shows a simplified paper path and the locations of the photosensors and rollers.

Manual Input Slot
Paper Output Bin

Paper
Input
Bin

Toner Cartridge
Paper Out Sensor
(PS202)
Delivery Roller #1
Pick-up Roller
Front Output Slot
Paper Registration
Sensor
(PS203)

Paper Exit
Sensor
(PS201)
Heating Element

Figure 5-5

EN

Pressure Roller

Transfer Roller

Main Motor

Simplified paper path

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Figure 5-6 shows the locations of the photosensors, switches, solenoid, and other important printer
elements. Table 5-1 describes the function of each photosensor and the solenoid.
PS204 (5L only)

Pick-up Roller Assembly

SW101
Laser Scanner

PS202
PS203
SL1

Heating Element
Drive Unit

Main Motor

DC Controller

Formatter

Figure 5-6

SW201

PS201

Solenoid and sensors
Table 5-1

Solenoid and sensors

Number

Name

Description

SL1

Paper Pick-up Solenoid

Enables the Paper Pickup Roller.

PS201

Paper Exit Sensor

Senses when paper has successfully
moved out of the fusing area and the next
sheet of paper can be fed.

PS202

Paper Out Sensor

Senses no paper in either the Paper Input
Tray or Manual Input Slot. If this sensor
does not sense paper in the Input Paper
Tray or the Single-Sheet Input Slot, the
formatter displays the paper-out indication
on the Control Panel. Paper must be
reloaded before printing can resume.

PS203

Paper Registration Sensor

Detects the leading and trailing edges of
the paper. Synchronizes the photosensitive
drum and the top of the paper.

PS204

Door Open/Cartridge Sensor (HP LaserJet
5L only) In the HP LaserJet 6L, SW101
performs the function of 5L’s PS204. The
6L Pro has no toner cartridge sensor.

Detects whether printer door is open and
cartridge is in place. If the door is open or
the cartridge is not in place, the control
panel LEDs will display an error message.
Printing cannot continue until the door is
closed and the cartridge is in proper
position.

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Paper jam detection
The Paper Out Sensor (PS202), Paper Registration Sensor (PS203), and the Paper Exit Sensor
(PS201) detect when paper is moving through the printer. (See Figure 5-5 for roller and sensor
locations.) If a paper jam is detected, the DC Controller immediately stops the printing process and
causes a paper jam indication on the Control Panel.
A paper jam can be detected under any of the following conditions:

EN

l

Power-On Jams. Paper is present under either PS201 or PS203 at power-on.

l

Pickup Jams. Paper does not reach and clear photosensor PS203 within a specified period of
time. The time period begins when the Paper Pickup Solenoid (SL1) is energized.

l

Delay Jams. Paper does not reach or clear a specific photosensor within a specified period of
time.

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Basic sequence of operation
The Formatter PCA and the DC Controller PCA share information during printer operation. The DC
Controller-to-Formatter Connector (J201) forms a link that operates as a serial data bus. This allows
printer status, command information, and dot-image data to be passed between the two PCAs.
Figure 5-7 shows the general timing of the printer events. The following events take place during
normal printer operation:

Table 5-2

Printer timing

Period

Timing

Purpose

WAIT

From when the paper is inserted to the end Clear the drum surface potential and clean
of Main Motor initial rotation.
the Transfer Roller.

STBY (standby)

From the end of the WAIT or the LSTR
Maintain the printer in ready state.
period until the input of the PRNT signal
from the Formatter. Or from the end of the
LSTR period until power OFF.

INTR (initial rotation) From the input of the PRNT signal from the Stabilize the photosensitive drum
Formatter until the laser diode intensity has sensitivity in preparation for printing. Also
been stabilized.
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.

Deliver the last sheet of paper. Also clean
the Transfer Roller.

If another PRNT signal is sent from the
Formatter, the printer returns to the INTR
period. If not, it returns to the STBY period.
Refer to the Timing Diagrams on the following pages.

66 Functional overview

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Figure 5-7

EN

General timing diagram - HP LaserJet 5L

Basic sequence of operation 67

Service.book Page 68 Thursday, September 14, 2000 11:15 AM

Figure 5-8

General timing diagram - HP LaserJet 6L and HP LaserJet 6L ProSL

68 Functional overview

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6

Removal and replacement

Chapter contents
Removal and replacement strategy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Required tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Installing memory cards (DRAM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Covers and doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Back Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
EP Door Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Memory Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Main Cover and Paper Input Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Internal assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Exit Roller Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Delivery Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Fuser Pressure Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Heating Element . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Pressure Roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Face-Up/Face-Down Lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Fuser Exit Roller Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Paper Exit Sensor Flag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Top assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Laser/Scanner Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Solenoid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Pickup Roller Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Paper Feed Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Transfer Roller Guide and Transfer Roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Kick Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Separation Pad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Subpads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Feed Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Bottom assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Memory Door Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Motor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
DC Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Formatter PCA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

EN

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Removal and replacement strategy
This chapter documents removal and replacement of Field Replaceable Units (FRUs) only.
Replacement is generally the reverse of removal. Occasionally, notes are 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.
The sheet metal edges of this printer can be sharp! Exercise caution when working with the printer.

CAUTION

The printer contains parts that are electrostatic discharge (ESD) sensitive. Always service printers at
an ESD-protected workstation.
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 overtighten. If a self-tapping screw-hole becomes
stripped, repair the screw-hole or replace the affected assembly.

Note

Always remove the toner cartridge before removing or replacing parts.

70 Removal and replacement

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Service.book Page 71 Thursday, September 14, 2000 11:15 AM

Required tools

CAUTION

l

#2 Phillips screwdriver with a magnetic tip

l

small flathead screwdriver

l

needlenose pliers

A PosiDriv screwdriver will damage the printer’s screw heads. Use Phillips only.
Figure 6-1 shows the difference between a Phillips and a PosiDriv screwdriver. Note that a Phillips tip
has more beveled surfaces.

Phillips
Figure 6-1

EN

PosiDriv

Phillips and PosiDriv screwdrivers

Required tools 71

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Installing memory cards (DRAM)
1
Note
The HP LaserJet 6L Pro does not support memory upgrades.

2

3

1

Unplug the power cord from the printer. You should not install a
memory card while the printer is in SleepMode.

2

Open the Printer Door, remove the toner cartridge, and close the
Printer Door. Protect the toner cartridge from light while you are
working on the printer.

3

Remove any paper in the paper tray. Gently tip the printer onto its
side so that the memory cover is on top as shown in Figure 3.

4

Remove the Memory Expansion Cover by carefully pulling the tab
out and away from the printer in a gentle rocking motion.

5

Align the memory card with the corner notch so it is positioned as in
Figure 4. Push it firmly into the printer

Replace the Memory Expansion Cover, set the printer upright, reinstall
the toner cartridge, reinsert paper, and reconnect to the power source.
Print a self-test page (see Chapter 3) to check that the printer
recognizes the additional memory you have added. Your Total Memory
in the “Printer Information” section will show the new MB total.

4

1 MB card

2 MB total

2 MB card

3 MB total

4 MB card

5 MB total

8 MB card

9 MB total

5

72 Removal and replacement

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Covers and doors
Back Cover
1

Unplug the power cord and remove the parallel cable from the back of the printer.

2

Remove the toner cartridge.

3

Lift the Input Extender assembly.

CAUTION

You must lift the Input Extender when the covers are removed or it will break. After you have removed
the covers, leave the Input Extender in this lifted position for ease of replacement.

Note

The Input Extender for the HP LaserJet 6L Pro differs from the one shown in the photo. It does not
have the extra extender for legal-size paper.
4

Remove the (3) screws (Figure 6-2, callout 1).

1

Figure 6-2

EN

Back Cover removal (1 of 2)

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Service.book Page 74 Thursday, September 14, 2000 11:15 AM

5

Separate the rear panel from the main cover, pulling the lower corners away from the printer first.
Then, insert the small flathead screwdriver into the openings at the top to pop the upper corners
(Figure 6-3, callout 1).

6

Remove the cover by grabbing it on both sides and pulling it straight back with a firm pull (Figure
6-3, callout 2).

1

2

Figure 6-3

Back Cover removal (2 of 2)

To reinstall
Make certain the Input Extender is raised before you reinstall the back cover.

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EP Door Assembly

Figure 6-4

EN

1

Unplug the power cord and remove the parallel cable from the back of the printer.

2

Open the EP Door.

3

Remove the toner cartridge.

4

There is a flex point along the door hinge. Firmly press the left tab inward to release it (Figure 64). The right tab will fall out easily.

EP Door Assembly removal

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Memory Door
Note

This procedure does not apply to the HP LaserJet 6L Pro. That model does not have a Memory Door.
1

Unplug the power cord and remove the parallel cable from the back of the printer.

2

Remove the toner cartridge.

3

Gently tip the printer onto its side so that the Control Panel is on top.

4

Carefully pull the door tab out (Figure 6-5, callout 1) and away from the printer in a gentle rocking
motion (Figure 6-5, callout 2).

2

1

Figure 6-5

Memory Door removal

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Main Cover and Paper Input Assembly

CAUTION

1

Remove the toner cartridge.

2

Remove memory door (HP LaserJet 5L and 6L).

Remove the memory door first (HP LaserJet 5L and 6L). The door will break if you remove the Main
Cover without removing the memory door.
3

Remove the EP Door Assembly.

4

Remove the Back Cover.

5

Remove the (2) screws from the top of the printer (Figure 6-6, callout 1).

6

Grasp the two lower, front corners of the printer and pull gently outward to release the front of the
Main Cover.

7

Lift the cover straight off.

8

Remove the Paper Input Assembly (Figure 6-6, callout 2) by rotating it forward and lifting it out
with firm pressure.

2

1

Figure 6-6

Main Cover and Paper Input Assembly removal

Note

When replacing the Paper Input Assembly, make certain that the mylar sheet is positioned between
the Input Feed Roller and Separation Pad and that the sheet is not folded or bent.

EN

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Internal assemblies
Control Panel
Procedure for HP LaserJet 5L and 6L
1

Remove the Printer Covers.

2

Use the needlenose pliers to release the Control Panel connector (Figure 6-7,callout 1).

3

Press the tab on the top of the Control Panel downward (Figure 6-7, callout 2). The Control Panel
will pop out of the printer chassis.

4

Lift the Control Panel out.

Procedure for HP LaserJet 6L Pro

Note

Note

1

Remove the Printer Covers.

2

Press the tab on the top of the Control Panel downward (Figure 6-7, callout 2). The Control Panel
will pop out of the printer chassis.

The Control Panel on the HP LaserJet 6L Pro is soldered directly to the wiring harness. It is not attached
with a connector. Do not try to separate the Control Panel from the wiring harness.
3

Press the tab on the top of the Control Panel downward (Figure 6-7, callout 2).The Control Panel
will pop out of the printer chassis.

4

Carefully remove the cable from the guides on the printer chassis.

The other end of the wiring harness is attached to the Formatter PCA with a connector. See “Formatter
PCA” later in this chapter for more information.

1
2

Figure 6-7

Control Panel removal

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Exit Roller Assembly
1

Remove Printer Covers.

2

Grasp both tabs at the lower ends of the Exit Roller bushings and pull inward. This will release
the tabs from the printer chassis (Figure 6-8, callout 1).

3

Rotate the tabs 90 degrees, clear of the printer chassis (Figure 6-8, callout 2).

4

Lift the roller out.

2

1

Figure 6-8

Exit Roller removal

To reinstall
The end of the Exit Roller that has a gear attached must fit into the gear train. Although it is possible
to reinstall the Exit Roller so that the gear end is on the opposite side of the printer, this placement
would cause paper path problems.

EN

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Delivery Assembly

Note

1

Remove the Printer Covers and Exit Roller Assembly.

2

Remove the EP Right-hand assembly by pressing inward on the tab (Figure 6-9, callout 1) and
sliding the assembly toward the front of the printer (Figure 6-9, callout 2).

The EP Right-Hand assembly must be removed to access any fuser components.

2

1

Figure 6-9

Delivery Assembly removal (1 of 2)

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3

Use the magnetic screwdriver to remove the (2) screws (Figure 6-10, callout 1).

4

Rotate the rear of the Delivery Assembly up and forward, then lift it out of the printer.

1

Figure 6-10

Delivery Assembly removal (2 of 2)

Note

When reinstalling the Delivery Assembly, make sure that the tabs on the front end of the Delivery
Assembly fit under the sheet metal fuser plate below.

EN

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Fuser Pressure Plate
1

Remove Printer Covers and Delivery Assembly (Figures 6-9 and 6-10).

2

Remove the (2) screws (Figure 6-11, callout 1).

3

Press the Fuser Plate retainer clips out to release the Pressure Plate (Figure 6-11, callout 2).

4

Rotate the plate around and toward the back. Lift up to remove it (Figure 6-11, callout 3).

2

3

1

Figure 6-11

Fuser Pressure Plate removal

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To reinstall
The Fuser Pressure Plate is kept in place by four locking mechanisms in each corner. Place the rear
slits in the plate over the rear brackets that hold the Fusing Assembly (Figure 6-12, callout 1). Lower
the plate over the retaining clips, pressing on both sides of the Fuser Pressure Plate (Figure 6-12,
callout, 2). It is important that the spring is placed over the positioning pin (callout 3) because
inadequate pressure will cause fusing problems. Replace the screws.

Figure 6-12

EN

Fuser Pressure Plate replacement

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Heating Element
1

Remove Printer Covers, Delivery Assembly (Figures 6-9 and 6-10), and Fuser Pressure Plate
(Figure 6-11).

2

Remove the wire cover (on the right side of the printer) for the Heating Element wires by pressing
in on the tab and pulling outward (Figure 6-13, callout 1).

1

Figure 6-13

Heating Element removal (1 of 3)

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3

Disconnect the AC voltage to the Heating Element by releasing the connector located on the DC
Controller. Press down on the connector release with a small, flathead screwdriver (Figure 6-14,
callout 1). (Because this is a small space, it is much easier to reach the connector with a
screwdriver.) Pull straight out (Figure 6-14, callout 2).

1

2

Figure 6-14

EN

Heating Element removal (2 of 3)

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Figure 6-15

4

Remove the wire from the wire guides along the right-side of the printer.

5

Disconnect the thermistor feedback connector in the left front side of the Fusing Assembly
(Figure 6-15).

Heating Element removal (3 of 3)
6

Lift the Heating Element out.

To reinstall
Make sure the connectors are properly reattached.

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Pressure Roller
1

Remove Printer Covers, Delivery Assembly (Figures 6-9 and 6-10), Fuser Pressure Plate (Figure
6-11), and Heating Element (Figures 6-13 through 6-15).

2

Remove the Pressure Roller guide by lifting the edge (Figure 6-16, callout 1) and then rolling it
gently backward (Figure 6-16, callout 2).

2

Figure 6-16

Pressure Roller Guide removal
3

Note

EN

Lift the right end of the Pressure Roller up and out of the printer chassis.

The right end of the Pressure Roller is greased.
4

Note

1

The left side will follow easily with the Pressure Roller gear still attached.

When reinstalling the Pressure Roller, apply a drop of grease to the grounding plate on the right side
of the shaft. (Refer to Chapter 8 for a part number.)

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Face-Up/Face-Down Lever
1

Remove Printer Covers, Delivery Assembly (Figures 6-9 and 6-10), Fuser Pressure Plate (Figure
6-11), and Heating Element (Figures 6-13 through 6-15), and Pressure Roller (Figure 6-16).

2

Rotate the lever forward 90 degrees (past the spring) and pull it straight out the front of the
printer.

To reinstall
1

Make sure the lever arm is on the left and is initially pointing downward.

2

Pull the spring forward using needlenose pliers.

3

Slide the short, round tabs into the grooves on the Separation Guide Assembly. The machined
ridges on the lever will face you.

4

Release the spring so it falls in place in front of the square tab (Figure 6-17).

Note

While the shape of the lever was changed for the HP LaserJet 6L (a stiffening rod was also added),
these procedures for Face-Up/Face-Down Lever removal remain unchanged. Figure 6-17 shows the
lever from an HP LaserJet 5L.

Figure 6-17

Face-Up/Face-Down Lever replacement

Note

You can tell when the lever is in place because there are two plastic grooves that fit precisely in front
of the Exit Rollers, and you should be able to feel the spring’s release mechanism.

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Fuser Exit Roller Assembly

Note

1

Remove Printer Covers, Delivery Assembly (Figures 6-9 and 6-10), Fuser Pressure Plate (Figure
6-11), and Heating Element (Figures 6-13 through 6-15), Pressure Roller (Figure 6-16), and
Face-Up/Face-Down Lever (Figure 6-17).

2

Remove the gear from the left end of the roller shaft by pressing down on the catching
mechanism with the small flathead screwdriver and pulling the gear away.

3

Remove the Exit Roller Assembly by pressing the small, white tab upward (Figure 6-18, callout 1)
and rotating it around (Figure 6-18, callout 2).

While the shape of the white tab was changed for the HP LaserJet 6L, these procedures for Fuser Exit
Roller Assembly removal remain unchanged. Figure 6-18 shows the white tab from an HP LaserJet 5L.
4

Slide the Exit Roller Assembly forward and out to the right of the printer.

2

1
Figure 6-18

EN

Fuser Exit Roller removal

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Paper Exit Sensor Flag
1

CAUTION

Remove the Printer Covers, Delivery Assembly (Figures 6-9 and 6-10), and Fuser Pressure
Plate (Figure 6-11).

Before proceeding to Step 2, examine the Paper Exit Sensor flag. It is important to note the position
of the spring mechanism on the flag. The spring must be reinstalled to exactly this position.
2

Remove the Paper Exit Sensor flag by pressing down on the left side and pulling up on the right
side.

To reinstall
Note

It is important that you reinstall the flag correctly, because installing it incorrectly will cause the Control
Panel to display an error with the Paper Exit Sensor (PS201).
Place the left side of the flag in the correct position first, then slide the right side into place, making
certain the spring is on top of the flag (Figure 6-19). If the spring exerts no pressure on the flag, it
may require “re-springing” by giving the spring an extra turn before reinstalling. The flag should fit
snugly in place.

Figure 6-19

Paper Exit Sensor Flag replacement

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Top assemblies
Laser/Scanner Assembly

Note

1

Remove the Printer Covers.

2

Remove both Laser/Scanner connectors (Figure 6-20, callout 1).

The Laser/Scanner connect cable on the HP LaserJet 6L Pro is twisted (not shown in Figure 6-20).
3

Note

Remove all (4) screws and lift the assembly straight off (Figure 6-20, callout 2).

One of the four screws is longer than the other three. Upon reinstallation, the longer screw must be
replaced in its original location.

2

1
1

Figure 6-20

Laser/Scanner Assembly removal

To reinstall
The Laser/Scanner connect cable on the HP LaserJet 6L Pro should be twisted before reinstalling
(not shown in Figure 6-20).

EN

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Solenoid
1

Remove the Printer Covers.

2

On the left side of the printer, remove the paper pickup gear (Figure 6-21, callout 1) by pressing
the tabs in the center of the gear outward and pulling the gear off (Figure 6-21).

1

Figure 6-21

Solenoid removal (1 of 2)

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3

Remove the Solenoid connector (J204) from the DC Controller (Figure 6-22, callout 1).

4

Remove the self-tapping screw that holds the Solenoid in place (Figure 6-22, callout 2).

5

Unthread the wires from the printer chassis.

6

Lift the Solenoid off.

2

1

Figure 6-22

Solenoid removal (2 of 2)

Note

When reinstalling this part, the Paper Pickup Gear is keyed to go on the shaft in only one way.

EN

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Pickup Roller Assembly

Note

1

Remove the Printer Covers.

2

Remove the paper pickup gear (Figure 6-21).

This gear is keyed to go on the shaft in only one way.
3

Remove the pickup roller grounding clip on the right of the printer by lifting each end of the clip up
and over the two metal guides and sliding the clip off. Figure 6-23 depicts the clip from an HP
LaserJet 5L. The clip from an HP LaserJet 6L (and some HP LaserJet 5Ls) is shaped differently.

5L

6L/6L Gold/6L Pro
(and some 5Ls)

Figure 6-23

Pickup Roller Assembly removal (1 of 2)

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4

Using needlenose pliers, pull the bottom of the bushing out (Figure 6-24, callout 1), then turn it
counter clockwise to release it (Figure 6-24, callout 2).

2

1

Figure 6-24

EN

Pickup Roller Assembly removal (2 of 2)
5

Lift the bushing out.

6

From inside the front of the printer, slide the right side of the Pickup Roller Assembly forward,
then lift the left side out.

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To reinstall
After placing the Pickup Roller shaft through on the left side, line up the Idler Roller tabs while
repositioning the right side. Rock the shaft back and forth until the Pickup Roller and the Idler Roller
tabs are correctly reinstalled.
Note

It is important that the Pickup Roller is placed back in with the two Idler Roller tabs up, so that they fit
into the underside of the metal chassis behind the Laser/Scanner assembly (Figure 6-25).

Figure 6-25

Paper Pickup Roller Assembly replacement (inside/front view)

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Paper Feed Frame
1

Remove the Printer Covers.

2

Remove the Pickup Roller Assembly (Figures 6-23 through 6-24).

3

Disconnect the following:
• Solenoid from the DC Controller at J204 (Figure 6-22, callout 1)
• Two connectors from the Laser/Scanner (Figure 6-26, callout 1)
• Connector from Top Cover/EP Cartridge Sensor on HP LaserJet 5L only (Figure 6-26, callout
2)
• Connector from Switch 101 (Figure 6-26, callout 3)
• Connector from Front Control Panel (Figure 6-26, callout 4)

4

3

1

Figure 6-26

EN

2

Paper Feed Frame removal (1 of 4)

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4

Figure 6-27

Release the catch on the control panel cable guide by using the small flathead screwdriver to
push on the tab (Figure 6-27). Then slide the guide off.

Paper Feed Frame removal (2 of 4)

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5

Remove the self-tapping screw from the back sheet metal plate and lift it off (Figure 6-28, callout
1).

6

Remove the (4) hex head screws from the Paper Feed Frame (Figure 6-28, callout 2).

1

2

Figure 6-28

EN

Paper Feed Frame removal (3 of 4)

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7

Release the sensor unit connector (Figure 6-29).

Note

This connector is not present on the HP LaserJet 6L Pro. For that model, remove the single connector
from the DC Controller.

Figure 6-29

Paper Feed Frame removal (4 of 4)
8

Verify that all cables are clear of the frame and pull the frame straight back to remove it.

To reinstall
The Paper Feed Frame may be easier to reinstall if you place the printer on its front, so that you can
apply pressure while putting the screws back in place.

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Transfer Roller Guide and Transfer Roller

Figure 6-30

1

Remove the Printer Covers, Pickup Roller Assembly (Figures 6-23 through 6-25), and Paper
Feed Frame (Figures 6-26 through 6-29).

2

Looking at the back of the printer, note the two small, hook-shaped release tabs on each end of
the Transfer Roller guide. Using a small, flathead screwdriver, carefully pry each tab outward to
release it (Figure 6-30).

3

Roll the released portion of the guide up. To remove the Transfer Roller Guide, pull it off each end
of the Transfer Roller shaft.

Transfer Roller Guide and Transfer Roller removal (inside/back view)
4

WARNING!

This exposes the Transfer Roller.

Do not touch the Transfer Roller or otherwise allow it to be contaminated.
5

Working from the front of the printer, gently pry the gear side of the Transfer Roller out first, then
slide the other side out of its socket.

To reinstall
Some of the HP LaserJet 5L Printers contain a small metal spring under the Transfer Roller Guide.
Upon reinstallation with these models, the small metal spring should rest under the Transfer Roller
Guide.

EN

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Kick Plate
CAUTION

Figure 6-31

Be careful working with the Kick Plate and Separation Pad. The spring underneath the Kick Plate may
stay attached to the Kick Plate, but it is also likely to spring away from the Kick Plate. Place the spring
aside for Separation Plate disassembly.
1

Remove the Printer Covers and the Pickup Roller Assembly (Figures 6-23 and 6-24).

2

Press the Separation Pad (Figure 6-31). Allow the Kick Plate to pivot upward (a spring
underneath will push it up). Lift the Kick Plate off its mounting pins.

Kick Plate removal

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To reinstall
If the spring on the Kick Plate does not stay on the Kick Plate, replace the spring, making certain the
diameter of the spring surrounds two lower pins on the Kick Plate and rests inside the third pin. Use
needlenose pliers to place the spring correctly. (See Figure 6-32.)

Figure 6-32

Kick Plate Spring replacement
While rotating the Kick Plate into place, guide the other end of the spring onto the silver grounding
plate located on the Paper Feed Frame.

EN

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Separation Pad

Figure 6-33

1

Remove the Printer Covers, Pickup Roller Assembly (Figures 6-23 and 6-24), and Kick Plate
(Figure 6-31).

2

Lift the bottom of the white plastic tab on the rear of the Paper Feed Frame up slightly and slide it
up, toward the top of the Paper Feed Frame. This will release the Separation Pad (Figure 6-33).

3

Lift the Separation Pad 90 degrees and slide its mounting pins out of their retainers.

Separation Pad removal

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Subpads
Note

Figure 6-34

EN

When you replace the Separation Pad, you should also replace the smaller subpads at the same time.
1

Place your index finger on the subpad.

2

Press toward the top of the printer.

Subpad removal

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Feed Assembly
The Feed Assembly is located in the Paper Feed Frame.
1

Remove the Printer Covers, Pickup Roller Assembly (Figures 6-23 through 6-25), and Paper
Feed Frame (Figures 6-26 through 6-29).

2

Turn the Paper Feed Frame upside down.

3

Remove the Feed Roller Shaft by lifting the plastic tab up (Figure 6-35, callout 1) and sliding it
out the side of the Paper Feed Frame (Figure 6-35, callout 2).

2

1

Figure 6-35

Feed Assembly removal (1 of 3)

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4

Remove the self-tapping screw that holds the Feed Assembly in place (Figure 6-36, callout 1).

Note

Before proceeding to Step 5, examine the tabs and how they fit into their slots (Figure 6-36, callout 2).
The tabs must be reinstalled to exactly this position.

Note

The connector shown (Figure 6-36, callout 3) is not present on the HP LaserJet 6L Pro. On that model,
the wiring harness is connected to the DC Controller.
5

Remove the Feed Assembly.

3

1

2
Figure 6-36

EN

Feed Assembly removal (2 of 3)

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6

Figure 6-37

Turn the Feed Assembly over and place it in one hand with the roller-side down. Pop one of the
tabs on the other side and the feed roller should fall into your hand (Figure 6-37).

Feed Assembly removal (3 of 3)

To reinstall
Before securing the screw, ensure the tabs on the Feed Assembly are positioned in their slots on the
Paper Feed Frame (Figure 6-35, callout 2). Failure to do so will cause paper feed problems.

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Bottom assemblies
Memory Door Guide
Note

Figure 6-38

EN

The HP LaserJet 6L Pro does not have a memory door.
1

Remove the Printer Covers.

2

Remove any extra memory.

3

Two tabs hold the memory door guide on the printer chassis. Press each tab inward (Figure 638).

4

Pull the memory door guide out.

Memory Door Guide removal

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Motor
1

Remove the Printer Covers.

2

Remove the motor connector (Figure 6-39, callout 1).

3

Remove the memory door guide (HP LaserJet 5L and 6L) to expose the two motor screws.

4

Remove the motor screws (Figure 6-39, callout 2).

5

Lift the Motor out.

1
2

Figure 6-39

Motor removal

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DC Controller

Note

1

Remove the Printer Covers.

2

Disconnect the motor connector from the motor (Figure 6-39, callout 1).

3

Disconnect the Solenoid connector from the DC Controller (Figure 6-22, callout 1).

4

Remove the back sheet metal plate and disconnect the PS202/PS204 connector (Figure 6-29).

5

Remove the AC Cable cover and disconnect the AC Cable from the DC Controller (Figures 6-13
and 6-14).

6

Tip the printer on its top, with the front facing you.

7

Remove the (4) screws (Figure 6-40, callout 1). On some models, one of the screws is a
grounding screw. The location of the grounding screw is marked by a “star” etched into the
bottom of the DC Controller.

If the model being serviced has a grounding screw with a washer, make sure that the grounding screw
is replaced in the same location when reinstalling the DC Controller.

1

Figure 6-40

EN

DC Controller removal (1 of 3)

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8

CAUTION

Lift the bottom plate, rotating the plate toward you from the back as if hinged on the front.
Release the Fusing Assembly connector (J206) (Figure 6-41, callout 1).

ESD SENSITIVE!

1

Figure 6-41

DC Controller removal (2 of 3)
9

CAUTION

Remove the (7) remaining connectors (Figure 6-42, callout 1).

Some wiring connections on the HP LaserJet 6L Pro are soldered. Check each connection before you
try to disconnect it to prevent breaking any soldered connections.
10 Remove the screws (5) that secure the DC Controller to the metal case (Figure 6-42, callout 2).

112 Removal and replacement

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2

1

2

Figure 6-42

DC Controller removal (3 of 3)
11 Remove the DC Controller by lifting gently on the side opposite the formatter, then sliding it out.

CAUTION

Be careful not to rotate the DC Controller as you remove it.

Note

When ordering, the DC Controller does not come with any connectors. Use the current connectors or
refer to the connector chart in Chapter 8 for ordering information.

EN

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Formatter PCA
CAUTION

CAUTION

ESD SENSITIVE!
1

Remove the Printer Covers and complete the DC Controller removal direction up to step 8
(Figures 6-40 and 6-41).

2

Remove the two cable clips (Figure 6-43, callout 1).

3

Remove all (4) screws from the formatter cover (Figure 6-43, callout 2). Lift the I/O shield to
remove it.

4

If servicing an HP LaserJet 5L or 6L, remove the Control Panel display cable (Figure 6-43,
callout 3).

On the HP LaserJet 6L Pro, the Control Panel display cable is connected directly to the Formatter PCA.
Do not attempt to disconnect this cable.
5

Slide the formatter away from the DC Controller PCA to remove it from the connector.

2

3
1

2

Figure 6-43

Formatter Board removal

Note

The formatter I/O shield comes in two separate pieces. Be careful to order the correct pieces.

114 Removal and replacement

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7

Troubleshooting

Chapter contents
General troubleshooting flowchart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Paper path and components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
DC Controller diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Printer error troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Priority of errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Printer status messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Service and error messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Image formation troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Check the toner cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Image defect examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Troubleshooting checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Engine test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Half self-test functional check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Drum rotation functional check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
High-voltage power supply check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Paper curl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Troubleshooting tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Paper path check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Repetitive image defect ruler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Main wiring diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140

EN

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General troubleshooting flowchart
When the AC power is first applied to the printer:
l

Both the printer motor and the laser/scanner motor rotate for six
seconds.

l

All of the LEDs illuminate for one second; the “Ready” LED will
illuminate after three seconds.

START

If no error message is displayed, the Printer Door is firmly closed, and
the toner cartridge is installed, but the motor does NOT rotate when AC
power is applied to the printer:

AC Power is
applied to the
printer

Does the
Printer Motor
rotate in about
6 seconds?

No

1

Verify that AC power is present at the input power receptacle and
that the power cord is firmly inserted into the printer.

2

Verify that FU102 is not open. (See Figure 7-2.)

3

Verify that motor connector J1 is seated into J401 of the DC
Controller. (See Figure 7-2.)

4

Verify that the motor is correctly mounted to the printer chassis.

5

If all of these conditions are correct, replace the DC Controller PCA
and/or the motor.

Yes

Is the
Control Panel
functional?

No
If the Control Panel is not functional:

Yes

Is an
Error
displayed?

No

Yes

1

Verify that the Control Panel connector J9 is seated into both the
Control Panel and the Formatter PCA at J3. (See Figure 7-2.)

2

Verify that the Formatter PCA is firmly seated into the DC Controller
PCA.

3

Perform an Print Engine Test. (See Figure 7-4.)

4

If the engine test is successful, replace the Control Panel first, then,
if necessary, the Formatter PCA.

5

If the engine test is not successful, replace the DC Controller PCA.

If the control panel displays an error, refer to the appropriate section in
this chapter to correct the error.

Continued on following page.

116 Troubleshooting

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General Troubleshooting Flowchart (continued)
Perform an
Engine Test

Is the
Engine Test
image being
printed
clearly?

No

Refer to the section “Image Formation Troubleshooting,” later in this
chapter.

Yes

Perform a Control
Panel Self-Test

Is the
Self-Test
image being
printed
clearly?

No
If the engine test produces a clear print image, yet a Self-Test is not
generated by initiating the Control Panel self-test procedure, replace the
Formatter PCA.

Yes
EXIT

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Paper path and components

Paper
Input
Manual Tray
Input
Slot

PAPER-OUT SENSOR signal
(PAPERSNS)

PICK-UP SOLENOID SNESOR signal
(CPUD)

PAPER PICK-UP SENSOR signal
(PSNS)

MOTOR DRIVE signal
(MA, IMA, MB, IMB)

PAPER DELIVRY SENSOR signal
(POSNS)

DC Controller PCA

SL1

Pick-up
Roller

Facedown
delivery
roller
Facedown
delivery

Figure 7-1

PS203

PS201

Fusing Unit
Delivery
Roller

PS202

Fuser

Deflector

Face-up
Delivery

Photosensitive
drum

Feed
Subroller

Paper
Exit Sensor

Transfer
Roller

Paper
Registration
Sensor

Paper
Out
Sensor
Feed Roller

Motor

Paper path and components

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DC Controller diagram

SW201
J302

PS201

J206

J3
J201

J304
J208
J209
J301

J207
J401

J102

FU101

J305
SW101)

J202
J204

FU102
(110V only

Formatter

INL101

DC Controller
(110V/220V)
Note: Some of the connectors shown
in this diagram are not present on the
HP LaserJet 6L Pro
Figure 7-2

DC Controller PCA components

J3

Control Panel Connector (Formatter PCA)

J102

Fusing Assembly

J202

Paper Registration and Paper-Out
Photosensors (PS203 and PS202)

J201

Formatter PCA Connection

J206

Fusing Assembly (thermistor feedback)

J204

Paper Pickup Solenoid (SL1)

J207

Scanner Motor

J301

Developer Bias Contact

J208

Laser Driver/Beam Detect Circuitry

J302

Transfer Roller Contact

209

Door Open/No Toner Cartridge
Photosensor (PS204) (HP LaserJet 5Lonly)

J304

Primary Roller Contact

J401

Motor

SW101

+12A Vdc Shutoff Switch

FU101

SW201

Engine Test Print Switch

FU102

110 volt only

PS201

Fusing Assembly Exit Photosensor

INL101

Input Power Receptacle

EN

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Printer error troubleshooting
Information regarding printer status is conveyed by two methods: 1) the printer’s Control Panel lights
and 2) feedback through the bi-directional I/O that displays at the PC. The basic method of
determining error messages uses patterns of lights on the Control Panel LED. Printer messages are
categorized into two basic types:

Note

l

Status Messages

l

Service and Error Messages

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:
1

Service Errors

2

Door Open/No Toner Cartridge

3

Paper Jam

4

Paper Out

5

Memory Error

6

Manual Feed

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Printer status messages
The following table lists printer LED messages and their meanings and describes recommended
actions. For more information on the Front Panel layout, refer to “Using the Control Panel” in Chapter
3, “Installation and Configuration.”

Table 7-1
LEDs

Printer status messages (Sheet 1 of 2)
Description

Recommended action

Paper Out Error.

Add paper.

Door Open or No EP
Cartridge.

Close the printer door and/or verify that the EP
cartridge is installed.

Paper Jam.

Clear paper jam.
If you have completed these recommended
actions and the error persists, see Table 7-3.

Memory Error. There is
either too much data or the
data is too complex.

1. Turn Page Protection on within your software
application or Windows.
2. Reduce the complexity of the print job.
3. Reduce resolution to 300 dpi within your
software application or Windows.
4. Add optional memory to the printer.
5. Make sure Enhanced I/O is on Auto Mode
(PCL mode) and resend print job. (See Chapter
3, “PCL Printer Settings.”)
6. If the Auto-Continue variable is on within PJL,
the printer will continue printing after 10
seconds.
7. If the Auto-Continue variable is off within PJL,
you need to press the Control Panel Button to
continue printing.

Incompatible Memory Card Remove the incompatible memory card and
replace it with a 1, 2, 4, or 8 Mb, 70 nsec. or
(5L/6L).
faster memory card. (See Chapter 8 for memory
card part numbers.)
Initializing/Resetting
(6L Pro).

No action necessary.

Manual Feed. The printer is
waiting for you to add a piece
of paper to the single sheet
input slot.

1. Make sure the correct paper is loaded into the
printer. (See your HP LaserJet 5L User’s
Manual or the HP LaserJet Printer Family Paper
Specifications Guide for more information.)
2. Press and release the Control Panel Button.
3. Turn off manual feed within your software
application if you do not wish the printer to
pause between sheets.

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Table 7-1

Printer status messages (Continued) (Sheet 2 of 2)

LEDs

Description

Recommended action

Sleep Mode.

If the printer’s LEDs remain off:
1. The printer is in Sleep Mode. Press the
Control Panel Button or open the EP Door.
2. Power is not supplied to the printer. Check
power cord connections and the power source.
3. Print an engine test to determine if the print
engine is functional. If the test is successful,
replace the Formatter PCA.
4. See the General Troubleshooting Flowchart
earlier in this chapter.

Occasionally you may add paper, close the printer door, add the toner cartridge, and clear a paper
jam, only to find that the printer still displays an error message. If this happens, troubleshoot using
Table 7-3 below.
Note

If the error appears and persists only after you attempt to print a page, verify that the motor is
functioning. (See “Printing an Engine Test” later in this chapter.)

Table 7-2

Unclearable error
This error will persist if any of the three paper movement photosensors (PS201,
PS202, and PS203) and/or their flags are not functional.
1. Verify that all three photosensor flags are not blocked and move freely. (See Figure
7-1 to identify photosensor flag locations.)
l
l
l

Paper Out Flag (PS202) (See Figure 5-6.)
Paper Registration Flag (PS203) (See Figure 5-6.)
Exit Sensor Flag (PS201) (See Figure 6-18.)

2. Verify that all connectors are firmly seated. (See Figure 7-2 to identify connector
locations on the DC controller.)
l
l

Door closed/EP Cartridge Photosensor connector (5L only)
Paper-Out and Registration Photosensor Connector (See Figure 5-6.)

Note: There is no connector for the Exit Photosensor (PS201) since it is located on
the DC Controller PCA. This flag is located beneath the Fusing Assembly. (Refer to
Figure 6-18.)
If all of the flags move freely and all of the connectors are correctly seated, yet the
error persists, replace the DC Controller PCA.

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Service and error messages
Service errors prevent further printer operation until some action is
taken. When there is a service error, all of the lights will turn on in a
steady state. Press and hold the Control Panel Button to see a
pattern in the lights. (The error will only be displayed as long as this
button is pressed.) Use Table 7-4, “Service and Error Messages,” to
identify what type of service error has occurred.

Table 7-3

Service and error messages
ROM/RAM Error. An error was
found with the ROM or RAM. The
printer believes that the ROM is
corrupted or an error has been found
in the RAM.

1. Power-cycle the printer by
unplugging the printer and plugging
it back in. If this doesn’t clear the
error:
2. Unplug the printer, remove any
optional memory, then power the
printer back on. If the message
clears, replace the memory card.
3. Replace the Formatter PCA.

Fuser Error. This indicates a fusing 1. Unplug the printer for 10 minutes
assembly malfunction.
or more.
Note: Chronic fuser failures or fuser
overheating or both are indicators of
an uninterruptible power supply or
battery backup being used with the
printer. Uninterruptible power
supplies (UPS) should not be used
with the printer.

2. Verify that the fuser connector is
firmly seated in J102 of the DC
Controller PCA and that the
thermistor connector (left of fusing
assembly) is seated into both the
printer chassis and J206 of the DC
Controller PCA.
3. Remove the connector from J102
of the DC Controller (See Figure 614). Measure the resistance
between pins one and two of the
cable. (This procedure will measure
the continuity of the ceramic heating
element.) Normal resistance is 30
ohms +/- 10 ohms. If no resistance is
measured, replace the heating
element.
4. Remove the thermistor
(temperature feedback) connector
(See Figure 7-3). Measure the
resistance between pins one and
two. Normal resistance is 440K
ohms +/- 30K at 20 degrees C. If the
resistance is not measured replace
the heating element
5. If the resistance readings are
correct, yet the error persists,
replace the DC Controller.

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Figure 7-3

Heating element resistance check

Table 7-3

Service and error messages (Continued 2 of 3)
Beam Error. There are a number of 1. Power-cycle the printer by
causes for this error, and some of
unplugging the printer and plugging
the causes may be transient. (They it back in.
may disappear.)
2. Make certain the Laser/Scanner
Assembly is correctly seated on the
printer chassis.
3. Replace the Laser/Scanner cable
(J208 on the DC Controller).
4. Replace the Laser/Scanner
Assembly.
5. Replace the DC Controller PCA.
Engine Error. The formatter and
engine are not communicating.

1. Power-cycle the printer by
unplugging the printer and plugging
it back in. If this doesn’t clear the
error:
2. Reseat Formatter to DC Controller
PCA.
3. Replace the Formatter PCA4.
Replace the DC Controller PCA.

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Table 7-3

Service and error messages (Continued 3of 3)
Scanner Error. Caused by a
scanner malfunction.

1. Power-cycle the printer by
unplugging the printer and plugging
it back in.
2. Ensure condensation caused by
moving the printer from a cold to a
warm environment hasn’t occurred.
Allow the printer to acclimate to the
warmer room.
3. Verify the two Laser/Scanner
Assembly connectors are firmly
seated.
4. Replace scanner cable J207 on
the DC Controller PCA.
5. Replace the Laser/Scanner
Assembly.
6. Replace the DC Controller PCA.

Formatter Error.

1. Power-cycle the printer by
unplugging the printer and plugging
it back in.
2. Disconnect the parallel I/O cable
and try running a printer self test.
Reconnect the parallel cable if the
self test is successful and try host/
printer communications again.
3. If the error persists, replace the
Formatter PCA.

EN

Firmware Error.

Note the LED pattern and the BiTronics error code. Contact HP
technical support with this
information as well as a description
of what data was sent, the errors
encountered prior to the firmware
error, the condition of the printer
prior to the error, and any other
information that may help isolate the
error.

Processor Error.

Note the LED pattern and the Bitronics error code. Contact HP
technical support with this
information as well as a description
of what data was sent, the errors
encountered prior to the firmware
error, the condition of the printer
prior to the error, and any other
information that may help isolate the
error.

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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.

Note

l

Ensure that the toner cartridge is seated properly in the cavity.

l

Inspect the toner cartridge for remaining toner.

l

Check the expiration date of the toner cartridge (stamped on the cartridge box).

l

Check the toner cartridge to see if it has been disassembled or refilled.

The full weight of the toner cartridge is 26.1 oz (730 grams), and its empty weight is 22.7 oz. (640
grams).
l

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).

l

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.

l

Blurred areas on the page may indicate that the drum has been exposed to light for too long. This
causes permanent damage to the photosensitive drum. Replace the cartridge.

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Image defect examples
This section illustrates some image defects and their possible causes. Since there are many
variables in the printing process, you may encounter image defects that are not illustrated in the
following examples. 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 lists, in order, the probable causes of the image defect.

Faded print
Faded or light print may consist of a faded area, an entire page faded, or a
block of vertically aligned white streaks.
l

The toner cartridge may be getting low on toner. Gently shake the
cartridge to redistribute the toner, or replace the cartridge.

l

The paper may not meet HP’s paper specifications (for example, too
moist or too rough). (See the HP LaserJet 5L User’s Manual or the HP
LaserJet Printer Family Paper Specifications Guide.

l

Adjust toner density setting through your software or printer driver.

l

EconoMode may be on. Turn it off through your software or printer driver.

l

There may be discontinuities in the high-voltage contact points. Clean
the high voltage contact points on the toner cartridge and transfer roller.
(See Figures 7-5 and 7-6.)

l

Complete a Half Self-Test to verify that the image is appearing on the
drum. (See “Half Self-Test Functional Check” later in this chapter.) If this
procedure isn’t successful, replace the transfer roller.

l

Replace the Laser/Scanner unit.

l

Replace the DC Controller.

Staining
Stains usually appear as small, round, black dots that occur in the front or the
back of a page. Sometimes wide, inconsistent stains appear.
l

The paper may not meet HP’s paper specifications (for example, too
moist).

l

You may be printing on the wrong side of the paper. Try removing the
paper from the Paper Input Tray and turning it over. (The label on many
reams of paper has an arrow indicating the print side.)

l

The printer may need cleaning. See “Cleaning Your Printer,” in
Chapter 4.

l

he toner cartridge may be damaged. Replace it if maintenance
procedures do not improve print quality.

Vertical lines
Sometimes vertically aligned black streaks or smears can appear on
successive pages.

EN

l

The toner cartridge may be damaged. Replace it.

l

The printer may need cleaning. See “Cleaning Your Printer,” in
Chapter 4.

l

Replace the heating element.

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Horizontal stripes
Sometimes horizontally aligned black streaks or smears can appear.
l

The toner cartridge may not be installed properly. Remove the cartridge
and reinsert it.

l

The toner cartridge may be defective. Replace it.

l

If the printer still has print quality problems, the printer may require
cleaning.

l

Replace the heating element.

Repetitive defects
Sometimes light character shadows or repetitive marks appear on the page.
l

Refer to the “Repetitive Image Defect Ruler” later in this chapter.

l

The printer may need cleaning. See “Cleaning Your Printer,” in Chapter
4.

l

The toner cartridge may be damaged, causing a repetitive black flaw on
every printout. Replace the toner cartridge.

l

If using transparencies, use a different type of overhead transparency.

l

Your paper texture may be too coarse. Try changing to a paper with a
smoother finish.

l

The photosensitive drum of the toner cartridge may have been overexposed to bright light, causing repetitive defects (usually a blurred
area). Replace the toner cartridge.

Vertical white stripes
The toner cartridge may be getting low on toner. Gently shake the cartridge
to redistribute the toner, or replace the cartridge.
l

The printer may need cleaning. (See “Cleaning Your Printer,” in Chapter
4.) You may also need to clean the mirror on the laser scanner by
blowing air through the scanner to remove any dust particles.

Character voids
Character voids are white areas within the parts of characters that should be
solid black.

128 Troubleshooting

l

If you are using transparencies when you experience this problem, try
another type of transparency. Hewlett-Packard transparencies are
designed to minimize character voids. (Because of the composition of
transparency media, some character voids are normal.)

l

You may be printing on the wrong side of the paper. Remove the paper
and turn it over. (The label on many reams of paper has an arrow
indicating the print side.)

l

Your paper may not meet the requirements for the printer.

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Background scatter
Background scatter results from bits of toner distributed on the front or back
of a printed page. Background scatter often is isolated to a specific area of
the page.
l

Check the environment. High humidity can cause this error.

l

Change the paper type, weight, or surface finish. See appendix B of the
User’s Manual for paper specifications.

l

If background scatter occurs on an envelope, try moving the text to an
area with no seams. Printing on seams can cause this problem.

l

If background scatter covers the entire surface of an envelope, try
adjusting the print density through your software or printer driver.

l

If this problem occurs on the back of a printed page, it may be caused by
spilled toner inside the printer. See “Cleaning Your Printer” in Chapter 4.

Black page
A page is completely black.
l

The toner cartridge may not be installed properly. Remove the cartridge
and reinsert it.

l

The toner cartridge may be defective. Replace it.

l

There may be discontinuities in the high-voltage contact points. Clean
the high voltage contact points on the toner cartridge and transfer roller.
(See Figures 7-5 and 7-6.)

l

Replace the DC Controller or Laser/Scanner unit.

Dropouts
Dropouts are characters that are partially printed.
l

The Paper Input Tray may have been loaded with too much paper. Make
sure that no more than 100 sheets of paper are loaded.

l

A single sheet of paper may be defective. Try reprinting the job.

l

Try adjusting the print density through your software or printer driver.

l

Try cleaning the rollers.

l

The moisture content of the paper may be inconsistent, or the paper may
have moist or wet spots on the surface. Try paper from a fresh ream or a
different paper manufacturer.

l

The paper may have been damaged by inconsistent manufacturing
processes. Try paper from a different source.

Half of the page Is blank or loss of detail
The bottom of the page is blank, or part of a graphics image is cut off. This
may mean that your page is too complex for the standard printer memory.

EN

l

Set resolution to 300 dpi through your software or printer driver.

l

You may need to install additional memory in your printer. See Chapter 6
for memory installation instructions.

l

Check your printer driver help screens for suggestions specific to your
driver’s settings.

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Curled or wrinkled sheets
Media is curled or wrinkled when using the Paper Output Bin.
l

Verify that the media you are using meets paper specifications. (See the
HP LaserJet 5L User’s Manual or the HP LaserJet Printer Family Paper
Specifications Guide.

l

Turn the paper over.

l

Use the Front Output Slot by pushing the Paper Path Lever to the lower
position. This provides the straightest paper path.

l

Use Paper Input Support located behind the Paper Input Tray.

Blank page (occasional)
A page is completely blank. If you get occasional blank pages:
l

Make sure your page length and margins are set correctly for the paper
size you use. If you are printing on small media and your page is blank,
try printing on larger media to see where the image is printing. Adjust
margins accordingly.

l

Some sharing devices or networks may generate a blank page as a
separator. Try connecting the printer directly to the computer.

l

Your printer may be feeding two or more pages at once because the
paper is difficult to separate. Remove the paper from the Paper Input
Tray and align the edges of the paper. Although fanning the paper is not
generally recommended, it may be an effective way to decrease multifeeds if the paper was poorly cut by the manufacturer and is sticking
together. You may also try turning the paper around to feed the opposite
end first.

Your software application may send an extra page eject command. Check
your software’s printing configuration information. If you are using a word
processing program, check for a natural page break and a forced page break
that are close to each other, causing a blank page.

Blank pages (all pages)
If all of your pages are blank:

130 Troubleshooting

l

Make sure you removed the entire length of the sealing tape from the
toner cartridge before you installed the cartridge.

l

The toner cartridge may be completely out of toner. Replace the
cartridge.

l

Try printing a self-test page. (See Chapter 3.) If the page is still blank,
the printer may need service.

l

There may be discontinuities in the high-voltage contact points. Clean
the high voltage contact points on the toner cartridge and transfer roller.

l

Reseat the Laser/Scanner connectors.

l

Replace the Laser/Scanner unit.

l

Replace the DC Controller.

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Dark background
l

Adjust the toner density setting through your software or printer driver.

l

There may be discontinuities in the high-voltage contact points. Clean
the high voltage contact points on the toner cartridge and transfer roller.

l

Replace the Laser/Scanner unit.

l

Replace the DC Controller.

Dots
l

Clean the static charge eliminator. (See Chapter 4, “Printer
Maintenance.”)

l

There may be discontinuities in the high-voltage contact points. Clean
the high voltage contact points on the toner cartridge and transfer roller.

l

Replace the transfer roller.

Dirt on the back of the page
l

Use the image defect ruler to determine if the rollers are dirty. If so, clean
them. Replace the rollers if they cannot be cleaned sufficiently.

l

Clean the heating element.

Blank spots

EN

l

The paper may not meet HP’s paper specifications. Select different
paper.

l

The moisture content of the paper may be inconsistent, or the paper may
have moist or wet spots on the surface. Try paper from a fresh ream or a
different paper manufacturer.

l

Replace the toner cartridge.

l

There may be discontinuities in the high-voltage contact points. Clean
the high voltage contact points on the toner cartridge and transfer roller.

l

Replace the transfer roller.

l

Replace the DC Controller.

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White horizontal line
l

Replace the toner cartridge.

Faulty registration/skewed image
l

Unload the paper and re-stack it in the input tray

l

Readjust the guides to the width of the paper.

l

Too many sheets of paper may have been loaded into the paper input
slot. Load no more than 100 sheets of paper.

l

The paper may not meet HP’s paper specifications. Select different
paper.

l

Clean the Paper Pickup Roller. If you cannot remove the dirt, the roller
may be worn out. Replace the roller.

l

Check separation pad and subpads. If they are worn, replace them.

l

Clean the Delivery Roller. If you cannot remove the dirt, replace the
roller.

l

Restack the paper in the paper input source and try reprinting the job.

Distorted image or BD failure

132 Troubleshooting

l

Make certain the printer is not facing the sunlight.

l

The paper may not meet HP’s paper specifications. Select different
paper.

l

Clean the Laser/Scanner Assembly by blowing compressed air in the
slot on the bottom of the assembly.

l

Make sure the two Laser/Scanner connectors are firmly seated.

l

Replace the Laser/Scanner unit.

l

Replace the DC Controller.

EN

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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, so this test is useful for isolating printer problems.
The engine test prints a full page of vertical lines down the entire printable area and is also useful for
checking and adjusting registration.

Engine Test Button location
The engine test print button is located on the DC Controller PCA. It is accessible through a hole at
the front of the printer. (See Figure 7-4.)

Printing an engine test
The engine test button is accessible without removing the covers. To print an engine test, use a long,
non-metallic object (such as a pen or pencil) to press the engine test button. A single test page is
printed. (See Figure 7-4.)

Engine test printout
(5L/6L)
Figure 7-4

EN

Engine test printout
(6L Pro)

Engine test button

Engine test

Troubleshooting checks 133

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Half self-test functional check
The electrophotographic process can be subdivided into the following stages:
l

Cleaning (removing excess toner from drum surface)

l

Conditioning (placing a uniform electrical charge on drum)

l

Writing (laser strikes surface of drum to create latent image)

l

Development (formation of the toner image on drum)

l

Transfer (charge to transfer the image to paper)

l

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:
1

Initiate a self-test.

2

Open the Printer Door after the paper advances half-way through the printer (about eight
seconds after the Motor begins rotation). The leading edge of the paper should have advanced
past the toner cartridge.

3

Remove the toner cartridge.

4

Open 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.) Troubleshoot the failure as a transfer or fusing problem.
If NO image is present on the photosensitive drum, perform the following functional checks:
1

Make sure you have removed the entire length of the sealing tape from the toner cartridge before
you installed the cartridge.

2

Drum Rotation Functional Check.

3

High Voltage Power Supply Check.

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:
1

Open the Printer Door.

2

Remove the toner cartridge.

3

Mark the cartridge’s drive gear with a felt-tipped marker. Note the position of the mark.

4

Install the toner cartridge and close the Printer Door. The start-up sequence should rotate the
drum enough to move the mark.

5

Open 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.

134 Troubleshooting

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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.

Table 7-4

High-voltage power supply check

Check

Action

Toner Cartridge Connection Points

Visually inspect the three connection points on the underside, right
end of the toner cartridge. If they are dirty or corroded, clean the
connections. Use alcohol only. If damaged, replace the toner
cartridge. (See Figure 7-5 below.)

High Voltage Connector Assembly

This assembly uses spring-loaded pins to contact the toner
cartridge. (See Figure 7-6 on the following page.) Verify that the pins
are not dirty or corroded and that the spring-loading action is
functional. If the pins are dirty, clean using alcohol only; if damaged,
replace the High Voltage Connector Assembly.

1

2

3

Figure 7-5

EN

Toner cartridge high-voltage connection points (1 of 2)
1

Charging

2

Drum Ground

3

Developing Roller

Troubleshooting checks 135

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1

2

3

Figure 7-6

Toner cartridge high-voltage connection points (2 of 2)
1

Charging

2

Drum Ground

3

Developing Roller

136 Troubleshooting

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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.

Table 7-5

EN

Paper curl troubleshooting

Possible causes

Recommended action

Paper path

Try using the front output slot to shorten and straighten the paper path.

Paper surface

The recommended printing surface of the page is usually marked on
the end of a ream of paper by a small arrow and the phrase “print this
side first.” If the incorrect side was face up, turn the paper over. Load
paper into the Paper Input Tray with the recommended printing surface
facing the front of the printer.

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
contents will tend to curl more. Evaluate the storage conditions of the
paper.

Paper type

All paper is manufactured differently (texture, moisture content, drying
processes, composition, etc.). Change the type of paper being used
and reevaluate the paper if curl results.

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Troubleshooting tools
Paper path check
If paper is not being picked up or is not moving through the paper path, you may want to observe all
of the paper motion activities. Overriding PS204 (5L) or SW101 (6L and 6L Pro) allows you to
observe:
l

Motor rotation

l

Solenoid action

l

Kick plate motion

l

Paper Pickup Roller motion

l

Drive Roller, Transfer Roller, Fuser Roller and Gear, and Delivery Roller Motion

To override PS204 and SW101
1

Remove the Printer Covers (Figures 6-2, 6-3, and 6-4).

2

For HP LaserJet 5LPrinter only: Press the Door Open flag down (Figure 7-7, callout 1) and lift
the EP Cartridge flag (Figure 7-7, callout 2). These flags are located on top of the printer chassis
to the left of the Laser/Scanner assembly.
For HP LaserJet 5L, 6L and 6L Pro Printers: Press SW101 (Figure 7-7, callout 3).

Note

The EP Cartridge flag (Figure 7-7, callout 2) is not present on the HP LaserJet 6L Pro.

1
2

3

Figure 7-7

Overriding PS204 and SW101
3

While holding the flags up, perform either an Engine Test or a Self-Test to observe paper motion.
(See procedures earlier in this chapter.)

138 Troubleshooting

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Repetitive image defect ruler
First occurrence of print defect

Developing Cylinder 32 mm (1.25 inches)
Primary Charging Roller 38 mm (1.5 inches)
Delivery Roller 44 mm (1.75 inches)
Transfer Roller 48 mm (1.9 inches)

Pressure Roller 64 mm (2.5 inches)
Upper Heating Element Film 76 mm (3.0 inches)
Toner Cartridge Photosensitive Drum 76 mm (3.0 inches)

Figure 7-8

EN

Repetitive image defect ruler

Troubleshooting tools 139

1

Figure 7-9

140 Troubleshooting
PS202
(Paper Out)

SL1

J204

J202

J102

PS203
(Registration)

Motor

J401
J209

J206

Frame
Ground

Parallel
Port

Formatter PCA

SW201
(Engine
Test)

PS201
(Paper
Exit)

J302 J301
(TR) (DEV)

Laser
Unit

J208

J304
(PR)

PS204
(Door Closed/
EP Cartridge
Installed)
(5L only)

SW101

Scanner

J207

J305

FU102
(110V only)

FU101

High Voltage
Connector

EP Cartridge

Optional
Memory
Port1

Control Panel

SW

LEDs

Fusing
Assembly

Service.book Page 140 Thursday, September 14, 2000 11:15 AM

Main wiring diagram

Not present on the HP LaserJet 6L Pro

Main wiring diagram

EN

Service.book Page 141 Thursday, September 14, 2000 11:15 AM

Table 7-6

EN

Cable pinouts

Connector

Signal name

Remarks

J401 pin 1

MA

Motor Drive Signal

J401 pin 2

MA

Motor Drive Signal

J401 pin 3

MB

Motor Drive Signal

J401 pin 4

MB

Motor Drive Signal

J204 pin 1

+12 V

5L only

J204 pin 2

CPUD

Solenoid SL1 Pickup Drive (5L only)

J202 pin 1

+5V

J202 pin 2

GND

J202 pin 3

PAPSENS

J202 pin 4

+5V

J202 pin 5

GND

J202 pin 6

PISNS

J207 pin 1

+12 V

J207 pin 2

SCNTAC

J207 pin 3

FG

J207 pin 4

/SCNON

“L” to rotate scanner motor

J207 pin 5

SCNCLK

Scanner clock reference

J208 pin 1

+5 V

J208 pin 2

APCSH

APC sample hold

J208 pin 3

/LON

Laser Enable

J208 pin 4

FG

J208 pin 5

/VDOUT

Laser Drive Signal

J208 pin 6

BDI

Beam Detect Input Signal

J209 pin 1

+5 V

J209 pin 2

GND

J209 pin 2

DOSNS

J305 pin 1

+12A V

J305 pin 2

N/U

J305 pin 3

+12 V

J206 pin 1

FRSTH

J206 pin 2

FG

“L” when PS202 detects paper

“L” when PS202 detects paper

Scanner tachometer pulses

“H” when cartridge is not installed or the front
door is open at PS204

Fusing temperature feedback

J102 pin 1

Fusing assembly drive voltage

J102 pin 2

Fusing assembly drive voltage

Troubleshooting tools 141

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142 Troubleshooting

EN

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8

Parts and diagrams

Chapter contents
How to use the part lists and diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Ordering parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Ordering consumables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Accessories and supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Common hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Parts diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147

EN

Chapter contents 143

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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 Commercial Service and
Support Organization-Americas (CSSO-A), or Commercial Service and Support OrganizationEurope (CSSO-E).
Hewlett-Packard Co.
Commercial Service and Support Organization
8050 Foothills Blvd.
Roseville, CA 95678
Parts Direct Ordering 1-800-227-8164 (U.S. Only)
Hewlett-Packard Co.
Commercial Service and Support Organization- Europe
Wolf-Hirth Strasse 33
D-7030 Böblingen, Germany
(49 7031) 14-2253

You can also contact HP at 916-783-0804 to find out part numbers for the LaserJet 5L, 6L and
6L Pro. Contact your local HP Parts Coordinator for other local phone numbers.

Ordering consumables
Consumables and accessories such as those listed on Table 8- may be ordered from HewlettPackard.
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 CSSO.

144 Parts and diagrams

EN

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Accessories and supplies
Note

Refer to “Related Documentation” in Chapter 1 for documentation and training media product numbers.
Table 8-1

Note

EN

Accessories and supplies

Item

Product number

Description

Toner cartridge

C3906A

Replacement toner cartridge.

Memory upgrades

1 MByte - C3939A
2 MByte - C3938A
4 MByte - C3148A

You can upgrade to a total of 9 MB of memory in
the HP LaserJet 5L/6L. You cannot upgrade the
memory in the HP LaserJet 6L Pro.

Parallel cable (IEEE 1284)

C2950A

2 meter, A to B

C2951A

3 meter, A to B

You can upgrade the HP LaserJet 5L and 6L printers to a total of 9 MB of memory with an 8 Mbyte
JEDIA memory module (not currently available from HP).

Accessories and supplies 145

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Common hardware
Table 8-2
Example

Common fasteners used in the printer
Description
Screw, Machine, Trus Head M3x4, M3x6, M3x8

Screw, Star, 3x6

Screw, Self-tap, 4x10

Screw, Hex-head, 3x8

Screw, Hexhead, 3x6,m 3x8, 3x10

146 Parts and diagrams

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Parts diagrams

Pick-up Assembly
(Figure 8-7)

Pick-up Roller
Assembly
(Figure 8-7)

DC Controller
(Figure 8-6)

Transfer Roller
Guide Assembly
(Figure 8-5)

Feed Assembly
(Figure 8-8)

Control Panel PCA
Assembly
(Figure 8-5)

Figure 8-1

EN

Delivery Assembly
(Figure 8-10)

Separation Guide
Assembly
(Figure 8-9)

Major assembly locations

Parts diagrams 147

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Not present on the
HP LaserJet 6L Pro

5

9

7

8

12
10
1

2
Not present on the
HP LaserJet 6L Pro

501

6

3
11
502

12
13
Not present on the
HP LaserJet 6L Pro

4

4A

14
Figure 8-2

Covers and doors

148 Parts and diagrams

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Table 8-3

EN

Covers and doors

Ref

LaserJet 5L
part number

LaserJet 6L
part number

LaserJet 6L Pro
part number

Qty Description

1

RB1-7211-000CN

RB2-1637-000CN

RB2-6213-000CN

1

Input Extender 1/Tray, Sub

2

RB1-7212-000CN

RB2-1638-000CN

n/a

1

Input Extender 2

3

RB1-7333-000CN

RB2-1636-000CN

RB2-1636-000CN

1

Back Cover

4

RG5-1995-000CN

RG5-3443-000CN

n/a

1

Main Cover

4A

RB1-7278-000CN

RB2-1644-000CN

RB2-1644-000CN

1

Face-up/Face-down Switch

5

RB1-7326-000CN

RB2-1696-000CN

RB2-1696-000CN

1

Output Extender 1

6

RB1-7327-000CN

RB2-1696-000CN

RG5-1697-000CN

1

EP Door Chimney

7

RB1-7331-000CN

RB2-1696-000CN

n/a

1

Output Extender 2

8

RF5-1501-030CN

RF5-2352-000CN

RG5-5475-000CN

1

EP Door Assembly/Cover
Assembly

8B

RB1-7335-000CN

RB2-1641-000CN

RB2-6229-000CN

1

Nameplate

9

RG5-1944-000CN

RG5-3488-000CN

RG5-3488-000CN

1

Input Assembly 1

10

RG5-1945-000CN

RG5-3491-000CN

RG5-3491-000CN

1

Input Assembly 2

11

XA9-0724-000CN

XA9-0724-000CN

XA9-0724-000CN

2

Screw RS, M3x8

13

RB1-7321-000CN

RB2-1639-000CN

n/a

1

Memory Door

14

n/a

n/a

RG5-5475-000CN

501

XB4-7401-007CN

XB4-7401-007CN

XA9-1262-007CN

2

Screw, TP, PH, M4x10

502

XB6-7300-807CN

XA9-0267-000CN

XA9-0267-000CN

2

Screw, Top, M3x8

Cover Assembly

Parts diagrams 149

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501

501

20
19
2
16
17
2

7

8

503

5

3
502

1

4
6

Figure 8-3

Internal components (1 of 3)

150 Parts and diagrams

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Table 8-4

EN

Internal components

Ref

LaserJet 5L
part number

LaserJet 6L
part number

LaserJet 6L Pro
part number

Qty Description

1

RY7-5005-000CN

RY7-5005-000CN

RY7-5005-000CN

1

Gear Kit #1

2

RB1-7288-000CN

RB1-7288-000CN

RB1-7288-000CN

2

Exit Roller Bushing

3

RB1-7105-000CN

RB1-7105-000CN

RB1-7105-000CN

1

Fuser Release Tab

4

RB1-7106-000CN

RB2-1632-000CN

RB2-1632-000CN

1

Gear Plate

5

RB1-7107-000CN

RB1-7107-000CN

RB1-7107-000CN

1

Front Gear Case

6

RY7-5007-000CN

RY7-5007-000CN

RY7-5007-000CN

1

Fuser Release Kit

7

RH7-1282-000CN

RH7-1320-000CN

RH7-1450-000CN

1

Main Motor

8

RY7-5006-000CN

RY7-5036-000CN

RY7-5036-000CN

1

Gear Kit #2

16

RG5-1984-000CN

RG5-3453-000CN

RF5-3256-000CN

1

EP/Cover Interlock

17

RF5-1521-000CN

RF5-2367-000CN

RF5-2367-000CN

1

Exit Roller

19

RG5-2004-000CN

RG5-3497-060CN

RG5-5473-060CN

1

Laser/Scanner Assembly

20

RB2-1714-000CN

RB2-1714-000CN

HB1-3418-000CN

1

Ground Clip, Scanner

501

XB6-7300-807CN

XB6-7300-807CN

XB6-1261-807CN

4

Screw, TP, M3x8

502

XB6-7300-607CN

XB6-7300-607CN

XB6-7300-607CN

4

Screw, TP, M3x6

503

XA9-0267-000CN

XA9-0267-000CN

XA9-1263-000CN

2

Screw, TP, M3x6

Parts diagrams 151

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9
See Figure 8-10

2

11

A

5

3
6
B
1
Note: For the HP
LaserJet 6L Pro, this
part was replaced
with a Guide Sheet.

See Figure 8-7

7

4

501

9

A
502

B

12

8
9

10
Figure 8-4

Internal components (2 of 3)

152 Parts and diagrams

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Table 8-5

EN

Internal components (2 of 3)

Ref

LaserJet 5L
part number

LaserJet 6L
part number

LaserJet 6L Pro
part number

Qty Description

1

RB1-7109-000CN

RB1-7109-000CN

n/a

1

Memory Door Guide

1

n/a

n/a

RB2-6226-000CN

1

Guide Sheet

2

RB1-7247-000CN

RB1-7247-000CN

RB1-7247-000CN

1

Fuser Paper Guide

3

RB1-7344-000CN

RB1-7344-000CN

RB1-7344-000CN

1

AC Cable Cover

4

RF5-1509-000CN

RF5-1509-000CN

RF5-6222-000CN

1

Back Sheet Metal

5

RB1-7343-000CN

RB1-7343-000CN

n/a

1

Control Panel Cable Guide

6

RB1-7130-000CN

RB1-7130-000CN

RB1-7130-000CN

1

Fuser Cable Guide

7

RB1-7234-000CN

RB1-7234-000CN

RB1-7234-000CN

1

Cap

8

RB1-7302-000CN

RB1-7302-000CN

RB1-7302-000CN

1

Cap

9

XA9-0724-000CN

XA9-0724-000CN

XA9-0724-000CN

6

Screw, RS, M3x8

10

XA9-0855-000CN

XA9-0855-000CN

XA9-0855-000CN

2

Screw, RS, M3x8 (with star
washer)

11

RB1-7176-000CN

RB1-7176-000CN

RB1-7176-000CN

2

Mylar Guide

12

RB1-7305-000CN

RB1-7305-000CN

RB1-7305-000CN

1

I/O Sheet Metal

13

RB1-7307-000CN

RB1-7307-000CN

RB1-7307-000CN

4

Foot

501

XB4-7401-007CN

XB4-7401-007CN

XB4-7401-007CN

3

Screw, Tapping, Panhead, M4x10

502

XB1-1300-807CN

XB1-1300-807CN

XB1-1300-807CN

2

Screw, PH, M3x8

Parts diagrams 153

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9

A
6

3
7

B
19

17

18
See
Figure 8-9

20
5

23

10

C
1

21

A

16

B

4

8

2
21

15

22

2

12
13
21

14

Figure 8-5

Internal components (3 of 3)

154 Parts and diagrams

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Table 8-6

EN

Internal components (3 of 3)

Ref

LaserJet 5L
part number

LaserJet 6L
part number

LaserJet 6L Pro
part number

Qty Description

1

RB1-7223-000CN

RB1-7223-000CN

RB1-7223-000CN

1

Pickup Roller Grounding Clip

2

RB1-7246-000CN

RB1-7246-000CN

RB1-7246-000CN

2

Pressure Roller Bushing

3

RB1-7341-000CN

RB1-7341-000CN

RB1-7341-000CN

1

EP Right Hand Guide #2

4

RF5-1516-000CN

RF5-2362-000CN

RF5-2364-000CN

1

Pressure Roller

5

RF5-1517-000CN

RF5-1517-000CN

RF5-1517-000CN

1

Fuser Pressure Plate

6

RF5-1530-000CN

RF5-2358-000CN

RF5-2358-000CN

1

Transfer Roller Guide

7

RF5-1534-000CN

RF5-1534-000CN

RF5-1534-000CN

1

Transfer Roller

8

RB1-7129-000CN

RB1-7129-000CN

RB1-7129-000CN

1

Case Ground Metal

9

RF5-1515-000CN

RF5-1515-000CN

RF5-1515-000CN

1

EP Right Hand Guide #1

10

RF5-1514-000CN

RF5-1514-000CN

RF5-1514-000CN

1

EP Left Hand Guide

11

RS5-0796-000CN

RS5-0796-000CN

RS5-0796-000CN

1

Pressure Roller Gear

12

RB1-7256-000CN

RB1-7256-000CN

RB1-7256-000CN

1

Right Pressure Roller Housing

13

RB1-7255-000CN

RB1-7255-000CN

RB1-7255-000CN

1

Left Pressure Roller Housing

14

RF5-1533-000CN

RF5-1533-000CN

RF5-1533-000CN

1

Pressure Roller Ground Guide

15

VS1-5057-002CN

VS1-5057-002CN

VS1-5057-002CN

1

Fuser Connector

16

RG5-1964-000CN

RG5-3459-000CN

n/a

1

Heating Element (110v)

16

RG5-1965-000CN

RG5-3463-000CN

RG5-5517-010CN

1

Heating Element (220v)

17

XA9-0824-000CN

XA9-0824-000CN

XA9-0824-000CN

1

Screw, RS, M3x10

18

RB1-7293-000CN

RB1-7293-000CN

RB1-7293-000CN

1

Flag

19

RB1-7294-000CN

RB1-7294-000CN

RB1-7294-000CN

1

Flag Spring

20

XA9-0724-000CN

XA9-0724-000CN

XA9-0724-000CN

2

Screw, RS, M3x8

21

XA9-0686-000CN

XA9-0686-000CN

XA9-0686-000CN

14

Screw, RS, M3x6

22

RG5-2028-000CN

RG5-2028-000CN

RG9-1454-000CN

1

Control Panel
Assembly

23

RG5-1961-000CN

RG5-3452-000CN

RG5-5481-000CN

1

Transfer Guide Assembly

24

RS5-2508-000CN

RS5-2508-000CN

RS5-2508-000CN

2

Compression Spring

CK-8006

CK-8006

CK-8006

1

Pressure Roller Grease

Parts diagrams 155

Service.book Page 156 Thursday, September 14, 2000 11:15 AM

7
5

15
6

1
3
6

Not shown:
connector 2A
shield plate
(6L Pro only).

2
Note: This cable (8) was
modified for the HP LaserJet
6L Pro. See Figure 8-8.

9
10

8

J202

J209
J005

J206
J002
J008
J401
J802
J801

J105

J305

J207
J208
J001

14
Figure 8-6

13

11

4

12
Note: Some of the cables and
connectors shown here are not
present on the HP LaserJet 6L Pro.

DC Controller/formatter and cables

156 Parts and diagrams

EN

Service.book Page 157 Thursday, September 14, 2000 11:15 AM

Table 8-7

EN

DC Controller case

Ref

LaserJet 5L
part number

LaserJet 6L
part number

LaserJet 6L Pro
part number

Qty Description

1

RG5-2024-000CN

RB2-1719-000CN

RB2-1719-000CN

1

Formatter Shield

2

C3942-67902

C3991-60001

C3991-60001

1

Formatter, New

C3942-69002

n/a

n/a

1

Formatter, Exchange

2A

n/a

n/a

RB2-1720-000CN

Connector Shield Plate

3

RG5-2023-000CN

RG5-3506-000CN

n/a

DC Controller PCA (110 V)

3

RG5-2025-000CN

RG5-3768-000CN

RG5-5489-000CN

1

DC Controller PCA (220 V)

3

C3941-69001

n/a

n/a

1

DC Controller PCA (110 V)
Exchange

3

C3941-69002

n/a

n/a

DC Controller PCA (220 V)
Exchange

4

RG5-3510-000CN

RG5-3510-000CN

RG5-5485-000CN

DC Controller PCA Case
Assembly

5

RG5-2036-000CN

RG5-3499-000CN

RG9-1454-000CN

1

Control Panel PCA Cable

6

XA9-0326-000CN

XA9-0890-000CN

XA9-0890-000CN

9

Screw, TP, M3x4

7

XA9-0828-000CN

XA9-0828-000CN

XA9-0828-000CN

1

Screw, with Star

8

RG5-2029-000CN

RG5-2029-000CN

RG5-5521-000CN

1

Paper Pickup Sensor Cable

9

RG5-2031-000CN

RG5-3662-000CN

n/a

1

Door Sensor Cable

10

RG5-2032-000CN

RG5-2032-000CN

RG5-5514-000CN

1

Thermistor Cable

11

RG5-2033-000CN

RG5-2033-000CN

RG5-5511-000CN

1

Motor Cable

12

RG5-2034-000CN

RG5-3661-000CN

RG5-5510-000CN

1

Scanner Cable

13

RG5-2035-000CN

n/a

n/a

1

Laser Cable

14

RG5-2037-000CN

n/a

n/a

1

Door Switch Cable

VD7-0211-002CN

VD7-0211-002CN

n/a

1

Fuse 101 (10 A/125 V)

VD7-0643-151CN

VD7-0643-151CN

VD7-0643-151CN

1

Fuse 101 (10 A/250 V)

RH3-8003-000CN

RH3-8003-000CN

n/a

1

Fuse 102 (5 A/125 V)

n/a

n/a

RB2-6220-000CN

1

Waterproof Cover

Parts diagrams 157

Service.book Page 158 Thursday, September 14, 2000 11:15 AM

18
14

2
17
16

1

5

7

13
501

19

SL001

Not shown: grounding
spring (6L Pro only).

4
3

3

See Figure 8-8

9
501

Figure 8-7

Pickup Roller assembly

158 Parts and diagrams

EN

Service.book Page 159 Thursday, September 14, 2000 11:15 AM

Table 8-8

EN

Pickup Roller assembly

Ref

LaserJet 5L
part number

LaserJet 6L
part number

LaserJet 6L Pro
part number

Qty Description

1

RB1-7177-000CN

RB1-7177-000CN

RB1-7177-000CN

1

Paper Feed Frame

2

RY7-5077-000CN

RY7-5077-000CN

RY7-5077-000CN

1

Separation Pad Kit

3

RY7-5009-000CN

RY7-5009-000CN

RY7-5009-000CN

1

Input Sensor Assembly

4

RG5-1951-040CN

RG5-3486-040CN

RG5-5483-000CN

1

Pickup Roller Assembly

5

RB1-7184-000CN

RB1-7184-000CN

RB1-7184-000CN

1

Pickup Roller Bushing

6

RB1-7197-000CN

RB1-7197-000CN

RB1-7197-000CN

1

Clutch

7

RB1-7199-000CN

RB1-7199-000CN

RB1-7199-000CN

1

Back Grounding Clip

9

RG5-1947-000CN

RG5-1947-000CN

RG5-1947-000CN

1

Idler Roller Shaft Assembly

13

RH7-5139-000CN

RH7-5139-000CN

RH7-5265-000CN

1

Solenoid

14

RS5-2501-000CN

RS5-2501-000CN

RS5-2501-000CN

1

Kick Plate Spring

16

RB1-7185-000CN

RB1-7185-000CN

RB1-7185-000CN

1

Left Leg

17

RB1-7186-000CN

RB1-7186-000CN

RB1-7186-000CN

1

Right Leg

18

RF5-1490-000CN

RF5-2372-000CN

RF5-2372-000CN

1

Paper Kick Plate

19

n/a

n/a

RB1-7172-000CN

1

Grounding Spring

501

XB4-7401-0007

XB4-7401-0007

XB4-7401-0007

2

Screw, TP, PH, M4x10

Parts diagrams 159

Service.book Page 160 Thursday, September 14, 2000 11:15 AM

9

J004

J202

Paper pick-up
sensor cable
(see Table 8-7)

J003

Figure 8-8

Feed assembly

160 Parts and diagrams

EN

Service.book Page 161 Thursday, September 14, 2000 11:15 AM

Table 8-9

EN

Feed assembly

Ref

LaserJet 5L
part number

LaserJet 6L
part number

LaserJet 6L Pro
part number

Qty Description

0

RG5-1942-000CN

RG5-3485-000CN

RG5-5522-000CN

1

Feed Assembly

9

RB1-7226-000CN

RB2-1699-000CN

RB2-1699-000CN

1

Idler Roller

10

n/a

n/a

Paper Pick-up Sensor Cable

Parts diagrams 161

Service.book Page 162 Thursday, September 14, 2000 11:15 AM

4

7

2

Figure 8-9

Separation Guide assembly

162 Parts and diagrams

EN

Service.book Page 163 Thursday, September 14, 2000 11:15 AM

Table 8-10
Ref

EN

Separation Guide assembly

LaserJet 5L
part number

LaserJet 6L
part number

LaserJet 6L Pro
part number

Qty Description

RG5-2013-000CN

RG5-3475-000CN

RG5-3475-000CN

1

Separation Guide Assembly

2

RB1-7276-000CN

RG5-3476-000CN

RG5-3476-000CN

1

Face-Up/Face-Down Lever

4

RB1-7289-000CN

RB2-1690-000CN

RB2-1690-000CN

1

Fuser Roller Bushing

7

RF5-1522-000CN

RF5-2368-000CN

RF5-2368-000CN

1

Fuser Exit Roller Assembly

Parts diagrams 163

Service.book Page 164 Thursday, September 14, 2000 11:15 AM

6

7

6

1

3

4

2

8

Figure 8-10

Delivery assembly

164 Parts and diagrams

EN

Service.book Page 165 Thursday, September 14, 2000 11:15 AM

Table 8-11
Ref

EN

Delivery assembly

LaserJet 5L
part number

LaserJet 6L
part number

LaserJet 6L Pro
part number

Qty Description

RG5-2012-000CN

RG5-3474-000CN

RG5-5482-000CN

1

Delivery Assembly

1

RB1-7284-000CN

RB1-7284-000CN

RB1-7284-000CN

4

Delivery Roller #1

2

RB1-7285-000CN

RB2-1685-000CN

RB2-1685-000CN

2

Delivery Roller #2

3

RB1-7286-000CN

RB1-7286-000CN

RB1-7286-000CN

4

Delivery Spring#1

4

RB1-7287-000CN

RB1-7287-000CN

RB1-7287-000CN

2

Delivery Spring#2

6

RG5-2015-000CN

RG5-3479-000CN

RG5-3479-000CN

2

Spur Assembly Outside

7

RG5-2014-000CN

RG5-3478-000CN

RG5-3478-000CN

1

Spur Assembly Inside

8

RB1-7334-000CN

RB1-7334-000CN

RB1-7334-000CN

1

JP Protector

Parts diagrams 165

Service.book Page 166 Thursday, September 14, 2000 11:15 AM

166 Parts and diagrams

EN

Service.book Page 167 Thursday, September 14, 2000 11:15 AM

A

Parts index

Alphabetical parts list
Table A-1 Alphabetical parts list

EN

Description

Part No.

Fig.

Ref.

AC Cable Cove

RB1-7344-000CN

8-4

3

Back Cover (5L)

RB1-7333-000CN

8-2

3

Back Cover (6L and 6L Pro)

RB2-1636-000CN

8-2

3

Back Grounding Clip

RB1-7199-000CN

8-7

7

Back Sheet Metal (5L and 6L)

RF5-1509-000CN

8-4

4

Back Sheet Metal (6L Pro)

RF5-6222-000CN

8-4

4

Cap

RB1-7234-000CN

8-4

7

Cap

RB1-7302-000CN

8-4

8

Case Grounding Metal

RB1-7129-000CN

8-5

8

Clutch

RB1-7197-000CN

8-7

6

Connector Shield Plate (6L Pro)

RB2-1720-000CN

8-6

2A

Control Panel Cable Guide

RB1-7343-000CN

8-4

5

Control Panel PCA Assembly

RG5-2028-000CN

8-5

22

Control Panel PCA Cable (5L)

RG5-2036-000CN

8-6

5

Control Panel PCA Cable (6L)

RG5-3499-000CN

8-6

5

Control Panel PCA Cable (6L Pro)

RG9-1454-000CN

8-6

5

Cover Assembly (6L Pro)

RG5-5475-000CN

8-2

14

DC Controller Fuse FU101-110 V

VD7-0211-002CN

8-6

DC Controller Fuse FU101-220 V

VD7-0643-151CN

8-6

DC Controller Fuse FU102-110 V

RH3-8003-000CN

8-6

DC Controller PCA (110 V) (5L)

RG5-2023-000CN

8-6

3

DC Controller PCA (110 V) (6L)

RG5-3506-000CN

8-6

3

DC Controller PCA (110 V) Exchange (5L)

C3941-69001

8-6

3

DC Controller PCA (220 V) (5L)

RG5-2025-000CN

8-6

3

DC Controller PCA (220 V) (6L)

RG5-3509-000CN

8-6

3

DC Controller PCA (220 V) (6L Pro)

RG5-5489-000CN

8-6

3

DC Controller PCA (220 V) Exchange (5L)

C3941-69002

8-6

3

DC Controller PCA Case Assembly (5L and 6L)

RG5-3510-000CN

8-6

4

DC Controller PCA Case Assembly (6L Pro)

RG5-5485-000CN

8-6

4

Alphabetical parts list 167

Service.book Page 168 Thursday, September 14, 2000 11:15 AM

Table A-1 Alphabetical parts list (Continued)

168 Parts index

Description

Part No.

Fig.

Ref.

Delivery Assembly (5L)

RG5-2012-000CN

8-10

Delivery Assembly (6L)

RG5-3474-000CN

8-10

Delivery Assembly (6L Pro)

RG5-5482-000CN

8-10

Delivery Roller #1

RB1-7284-000CN

8-10

1

Delivery Roller #2 (5L)

RB1-7285-000CN

8-10

2

Delivery Roller #2 (6L and 6L Pro)

RB2-1685-000CN

8-10

2

Delivery Spring #1

RB1-7286-000CN

8-10

3

Delivery Spring #2

RB1-7287-000CN

8-10

4

Door Sensor Cable (5L)

RG5-2031-000CN

8-6

9

Door Sensor Cable (6L and 6L Pro)

RG5-3662-000CN

8-6

9

Door Switch Cable (5L)

RG5-2037-000CN

8-6

14

EP/Cover Interlock

RG5-1984-000CN

9-3

16

EP/Cover Interlock

RG5-3453-000CN

9-3

16

EP/Cover Interlock

RF5-3256-000CN

8-3

16

EP Door Assembly (5L)

RF5-1501-030CN

8-2

8

EP Door Assembly (6L)

RF5-2352-000CN

8-2

8

EP Door Chimney (5L)

RB1-7327-000CN

8-2

6

EP Door Chimney (6L)

RB2-1696-000CN

8-2

6

EP Door Chimney (6L Pro)

RB2-1697-000CN

8-2

6

EP Left Hand Guide

RF5-1514-000CN

8-5

6

EP Right Hand Guide #1

RF5-1515-000CN

8-5

10

EP Right Hand Guide #2

RB1-7341-000CN

8-5

9

EP/Cover Interlock (5L)

RG5-1984-000CN

8-3

3

EP/Cover Interlock (6L and 6L Pro)

RG5-3453-000CN

8-3

16

Exit Roller (5L)

RF5-1521-000CN

8-3

16

Exit Roller (6L and 6L Pro)

RF5-2367-000CN

8-3

17

Exit Roller Bushing

RB1-7288-000CN

8-3

17

Face-up/Face-down Shaft (5L)

RB1-7276-000CN

8-9

2

Face-up/Face-down Shaft (6L and 6L Pro)

RG5-3476-000CN

8-9

2

Face-up/Face-down Switch (5L)

RB1-7278-000CN

8-2

2

Face-up/Face-down Switch (6L and 6L Pro)

RB2-1644-000CN

8-2

4A

Feed Assembly (5L)

RG5-1942-000CN

8-8

4A

Feed Assembly (6L and 6L Pro)

RG5-3485-000CN

8-8

Flag

RB1-7293-000CN

8-5

Flag Spring

RB1-7294-000CN

8-5

18

Formatter Shield (5L)

RG5-2024-000CN

8-6

19

Formatter Shield (6L and 6L Pro)

RB2-1719-000CN

8-6

1

Formatter (Exchange) (5L)

C3942-69002

8-6

1

Formatter (New) (5L)

C3942-67902

8-6

2

Formatter (New) (6L and 6L Pro)

C3991-60001

8-6

2

Front Gear Case

RB1-7107-000CN

8-3

2

Fuse 101 (110 V)

VD7-0211-002CN

8-6

5

EN

Service.book Page 169 Thursday, September 14, 2000 11:15 AM

Table A-1 Alphabetical parts list (Continued)

EN

Description

Part No.

Fig.

Ref.

Fuse 101 (220 V)

VD7-0643-151CN

8-6

Fuse 102 (110 V)

RH3-8003-000CN

8-6

Fuser Cable Guide

RB1-7130-000CN

8-4

6

Fuser Connector

VS1-5057-002CN

8-5

15

Fuser Exit Roller Assembly (5L)

RF5-1522-000CN

8-9

7

Fuser Exit Roller Assembly (6L and 6L Pro)

RF5-2368-000CN

8-9

7

Fuser Paper Guide

RB1-7247-000CN

8-4

2

Fuser Pressure Plate

RF5-1517-000CN

8-5

5

Fuser Release Kit

RY7-5007-000CN

8-3

6

Fuser Release Tab

RB1-7105-000CN

8-3

3

Fuser Roller Bushing (5L)

RB1-7289-000CN

8-9

4

Fuser Roller Bushing (6L and 6L Pro)

RB2-1690-000CN

8-9

4

Gear Kit #1

RY7-5005-000CN

8-3

1

Gear Kit #2 (5L)

RY7-5006-000CN

8-3

8

Gear Kit #2 (6L and 6L Pro)

RY7-5036-000CN

8-3

8

Gear Plate (5L)

RB1-7106-000CN

8-3

4

Gear Plate (6L and 6L Pro)

RB2-1632-000CN

8-3

4

Ground Clip, Scanner (5L and 6L)

RB1-7385-000CN

8-3

20

Ground Clip, Scanner (6L Pro)

HB1-3418-000CN

8-3

20

Grounding Spring (6L Pro)

RB1-7172-000CN

8-7

19

Guide Sheet

RB2-6226-000CN

8-4

1

Heating Element (110 V) (5L)

RG5-1964-000CN

8-5

16

Heating Element (110 V) (6L)

RG5-3459-000CN

8-5

16

Heating Element (220 V) (5L)

RG5-1965-000CN

8-5

16

Heating Element (220 V) (6L)

RG5-3463-000CN

8-5

16

Heating Element (220 V) (6L Pro)

RG5-5517-010CN

8-5

16

I/O Sheet Metal

RB1-7305-000CN

8-4

12

Idler Roller (5L)

RB1-7226-000CN

8-8

9

Idler Roller (6L and 6L Pro)

RB2-1699-000CN

8-8

9

Idler Roller Shaft Assembly

RG5-1947-000CN

8-7

9

Input Assembly 1 (5L)

RG5-1944-000CN

8-2

9

Input Assembly 1 (6L and 6L Pro)

RG5-3488-000CN

8-2

9

Input Assembly 2 (5L)

RG5-1945-000CN

8-2

10

Input Assembly 2 (6L and 6L Pro)

RG5-3491-000CN

8-2

10

Input Extender 1 (5L)

RB1-7211-000CN

8-2

1

Input Extender 1 (6L)

RB2-1637-000CN

8-2

1

Input Extender 1 (6L Pro)

RB2-6213-000CN

8-2

1

Input Extender 2 (5L)

RB1-7212-000CN

8-2

2

Input Extender 2 (6L and 6L Pro)

RB2-1638-000CN

8-2

2

Input Sensor Assembly

RY7-5009-000CN

8-7

3

JP Protector

RB1-7334-000CN

8-10

8

Kick Plate Spring

RS5-2501-000CN

8-7

14

Alphabetical parts list 169

Service.book Page 170 Thursday, September 14, 2000 11:15 AM

Table A-1 Alphabetical parts list (Continued)

170 Parts index

Description

Part No.

Fig.

Ref.

Laser Cable (5L)

RG5-2035-000CN

8-6

13

Laser\Scanner (Exchange) (5L)

C3941-69003

8-3

19

Laser\Scanner (New) (5L)

RG5-2000-000CN

8-3

19

Laser\Scanner (New) (6L)

RG5-3494-000CN

8-3

19

Laser\Scanner (New) (6L)

RG5-5473-060CN

8-3

19

Left Leg

RB1-7185-000CN

8-7

16

Left Pressure Roller Housing

RB1-7255-000CN

8-6

13

Main Cover (5L)

RG5-1995-000CN

8-2

4

Main Cover (6L)

RG5-3443-000CN

8-2

4

Main Motor (5L)

RH7-1282-000CN

8-3

7

Main Motor (6L)

RH7-1320-000CN

8-3

7

Main Motor (6L Pro)

RH7-1450-000CN

8-3

7

Memory Door (5L)

RB1-7321-000CN

8-2

13

Memory Door (6L and 6L Pro)

RB2-1639-000CN

8-2

13

Memory Door Guide

RB1-7109-000CN

8-4

1

Motor Cable

RG5-2033-000CN

8-6

11

Mylar Guide

RB1-7176-000CN

8-4

11

Nameplate (5L)

RB1-7335-000CN

8-2

8B

Nameplate (6L)

RB2-1641-000CN

8-2

8B

Nameplate (6L Pro)

RB2-6229-000CN

8-2

9B

Output Extender 1 (5L)

RB1-7326-000CN

8-2

5

Output Extender 1 (6L and 6L Pro)

RB2-1695-000CN

8-2

5

Output Extender 2 (5L)

RB1-7331-000CN

8-2

7

Output Extender 2 (6L and 6L Pro)

RB2-1696-000CN

8-2

7

Output Tray Fin

RB1-7332-000CN

8-2

14

Paper Feed Frame

RB1-7177-000CN

8-7

1

Paper Kick Plate (5L)

RF5-1490-000CN

8-7

18

Paper Kick Plate (6L and 6L Pro)

RF5-2372-000CN

8-7

18

Paper Pickup Sensor Cable (5L and 6L)

RG5-2029-000CN

8-6

8

Paper Pickup Sensor Cable (6L Pro)

RG5-5521-000CN

8-6

8

Pickup Roller Assembly (5L)

RG5-1951-000CN

8-7

4

Pickup Roller Assembly (6L)

RG5-3486-000CN

8-7

4

Pickup Roller Assembly (6L Pro)

RG5-5483-000CN

8-7

4

Pickup Roller Bushing

RB1-7184-000CN

8-7

5

Pickup Roller Grounding Clip

RB1-7223-000CN

8-5

1

Pressure Roller (5L)

RF5-1516-000CN

8-5

4

Pressure Roller (6L)

RF5-2362-000CN

8-5

4

Pressure Roller (6L Pro)

RF5-2364-000CN

8-5

4

Pressure Roller Bushing

RB1-7246-000CN

8-5

2

Pressure Roller Gear

RS5-0796-000CN

8-5

11

Pressure Roller Grease

CK-8006

8-5

Pressure Roller Grounding Guide

RF5-1533-000CN

8-5

14

EN

Service.book Page 171 Thursday, September 14, 2000 11:15 AM

Table A-1 Alphabetical parts list (Continued)

EN

Description

Part No.

Fig.

Ref.

Right Leg

RB1-7186-000CN

8-7

17

Right Pressure Roller Housing

RB1-7256-000CN

8-5

12

Scanner Cable (5L)

RG5-2034-000CN

8-6

12

Scanner Cable (6L and 6L Pro)

RG5-3661-000CN

8-6

12

Screw

XA9-0724-000CN

8-2

11

Screw (with star washer)

XA9-0855-000CN

8-4

10

Screw

XB1-1300-807CN

8-4

502

Screw

XA9-0267-000CN

8-3

503

Screw

XA9-0824-000CN

8-5

17

Screw

XA9-0686-000CN

8-5

21

Screw

XA9-0724-000CN

8-4

9

Screw

XA9-0724-000CN

8-5

20

Screw

XB4-7401-0074CN

8-4

501

Screw

XB4-7401-0007

8-7

501

Screw (5L and 6L)

XB4-7401-007CN

8-2

501

Screw (6L Pro)

XA9-1262-007CN

8-2

501

Screw (5L)

XB6-7300-807CN

8-2

502

Screw (6L and 6L Pro)

XA9-0267-000CN

8-2

502

Screw (DC Controller PCA) (5L)

XA9-0326-000CN

8-6

6

Screw (DC Controller PCA) (6L)

XA9-0890-000CN

8-6

6

Screw (DC Controller PCA)

XA9-0828-000CN

8-6

7

Screw

XB6-7300-607CN

8-3

501/502

Separation Guide Assembly (5L)

RG5-2013-000CN

8-9

Separation Guide Assembly (6L and 6L Pro)

RG5-3475-000CN

8-9

Separation Pad Kit (5L)

RY7-5008-000CN

8-7

2

Separation Pad Kit (6L and 6L Pro)

RY7-5077-000CN

8-7

2

Solenoid (5L and 6L)

RH7-5139-000CN

8-7

13

Solenoid (6L Pro)

RH7-5265-000CN

8-7

13

Spur Assembly Inside (5L)

RG5-2014-000CN

8-10

7

Spur Assembly Inside (6L and 6L Pro)

RG5-3478-000CN

8-10

7

Spur Assembly Outside (5L)

RG5-2015-000CN

8-10

6

Spur Assembly Outside (6L and 6L Pro)

RG5-3479-000CN

8-10

6

Thermistor Cable

RG5-2032-000CN

8-6

10

Transfer Guide Assembly (5L)

RG5-1961-000CN

8-5

23

Transfer Guide Assembly (6L)

RG5-3452-000CN

8-5

23

Transfer Guide Assembly (6L Pro)

RB2-6226-000CN

8-3

23

Transfer Roller

RF5-1534-000CN

8-5

7

Transfer Roller Guide (5L)

RF5-1530-000CN

8-5

6

Transfer Roller Guide (6L and 6L Pro)

RF5-2358-000CN

8-5

6

Waterproof Cover (6L Pro)

RB2-6220-000CN

8-6

Alphabetical parts list 171

Service.book Page 172 Thursday, September 14, 2000 11:15 AM

Numerical parts list

Table A-2 Numerical parts list

172 Parts index

Part No.

Description

Fig.

Ref.

C3941-69001

DC Controller PCA (110 V) Exchange (5L)

8-6

3

C3941-69002

DC Controller PCA (220 V) Exchange (5L)

8-6

3

C3941-69003

Laser\Scanner (Exchange) (5L)

8-3

19

C3942-67902

Formatter (New) (5L)

8-6

2

C3942-69002

Formatter (Exchange) (5L)

8-6

1

C3991-60001

Formatter (New) (6L and 6L Pro)

8-6

2

CK-8006

Pressure Roller Grease

8-5

HB1-3418-000CN

Ground Clip, Scanner (6L Pro)

8-3

20

RB1-7105-000CN

Fuser Release Tab

8-3

3

RB1-7106-000CN

Gear Plate (5L)

8-3

4

RB1-7107-000CN

Front Gear Case

8-3

2

RB1-7109-000CN

Memory Door Guide

8-4

1

RB1-7129-000CN

Case Grounding Metal

8-5

8

RB1-7130-000CN

Fuser Cable Guide

8-4

6

RB1-7172-000CN

Grounding Spring (6L Pro)

8-7

19

RB1-7176-000CN

Mylar Guide

8-4

11

RB1-7177-000CN

Paper Feed Frame

8-7

1

RB1-7184-000CN

Pickup Roller Bushing

8-7

5

RB1-7185-000CN

Left Leg

8-7

16

RB1-7186-000CN

Right Leg

8-7

17

RB1-7197-000CN

Clutch

8-7

6

RB1-7199-000CN

Back Grounding Clip

8-7

7

RB1-7211-000CN

Input Extender 1 (5L)

8-2

1

RB1-7212-000CN

Input Extender 2 (5L)

8-2

2

RB1-7223-000CN

Pickup Roller Grounding Clip

8-5

1

RB1-7226-000CN

Idler Roller (5L)

8-8

9

RB1-7234-000CN

Cap

8-4

7

RB1-7246-000CN

Pressure Roller Bushing

8-5

2

RB1-7247-000CN

Fuser Paper Guide

8-4

2

RB1-7255-000CN

Left Pressure Roller Housing

8-6

13

RB1-7256-000CN

Right Pressure Roller Housing

8-5

12

RB1-7276-000CN

Face-up/Face-down Shaft (5L)

8-9

2

RB1-7278-000CN

Face-up/Face-down Switch (5L)

8-2

2

RB1-7284-000CN

Delivery Roller #1

8-10

1

RB1-7285-000CN

Delivery Roller #2 (5L)

8-10

2

RB1-7286-000CN

Delivery Spring #1

8-10

3

RB1-7287-000CN

Delivery Spring #2

8-10

4

RB1-7288-000CN

Exit Roller Bushing

8-3

17

EN

Service.book Page 173 Thursday, September 14, 2000 11:15 AM

Table A-2 Numerical parts list (Continued)

EN

Part No.

Description

Fig.

Ref.

RB1-7289-000CN

Fuser Roller Bushing (5L)

8-9

4

RB1-7293-000CN

Flag

8-5

RB1-7294-000CN

Flag Spring

8-5

18

RB1-7302-000CN

Cap

8-4

8

RB1-7305-000CN

I/O Sheet Metal

8-4

12

RB1-7321-000CN

Memory Door (5L)

8-2

13

RB1-7326-000CN

Output Extender 1 (5L)

8-2

5

RB1-7327-000CN

EP Door Chimney (5L)

8-2

6

RB1-7331-000CN

Output Extender 2 (5L)

8-2

7

RB1-7332-000CN

Output Tray Fin

8-2

14

RB1-7333-000CN

Back Cover (5L)

8-2

3

RB1-7334-000CN

JP Protector

8-10

8

RB1-7335-000CN

Nameplate (5L)

8-2

8B

RB1-7341-000CN

EP Right Hand Guide #2

8-5

9

RB1-7343-000CN

Control Panel Cable Guide

8-4

5

RB1-7344-000CN

AC Cable Cove

8-4

3

RB1-7385-000CN

Ground Clip, Scanner (5L and 6L)

8-3

20

RB2-1632-000CN

Gear Plate (6L and 6L Pro)

8-3

4

RB2-1636-000CN

Back Cover (6L and 6L Pro)

8-2

3

RB2-1637-000CN

Input Extender 1 (6L)

8-2

1

RB2-1638-000CN

Input Extender 2 (6L and 6L Pro)

8-2

2

RB2-1639-000CN

Memory Door (6L and 6L Pro)

8-2

13

RB2-1641-000CN

Nameplate (6L)

8-2

8B

RB2-1644-000CN

Face-up/Face-down Switch (6L and 6L Pro)

8-2

4A

RB2-1685-000CN

Delivery Roller #2 (6L and 6L Pro)

8-10

2

RB2-1690-000CN

Fuser Roller Bushing (6L and 6L Pro)

8-9

4

RB2-1695-000CN

Output Extender 1 (6L and 6L Pro)

8-2

5

RB2-1696-000CN

EP Door Chimney (6L)

8-2

6

RB2-1696-000CN

Output Extender 2 (6L and 6L Pro)

8-2

7

RB2-1697-000CN

EP Door Chimney (6L Pro)

8-2

6

RB2-1699-000CN

Idler Roller (6L and 6L Pro)

8-8

9

RB2-1719-000CN

Formatter Shield (6L and 6L Pro)

8-6

1

RB2-1720-000CN

Connector Shield Plate (6L Pro)

8-6

2A

RB2-6213-000CN

Input Extender 1 (6L Pro)

8-2

1

RB2-6226-000CN

Guide Sheet

8-4

1

RB2-6229-000CN

Nameplate (6L Pro)

8-2

9B

RF5-1490-000CN

Paper Kick Plate (5L)

8-7

18

RF5-1501-030CN

EP Door Assembly (5L)

8-2

8

RF5-1509-000CN

Back Sheet Metal (5L and 6L)

8-4

4

RF5-1514-000CN

EP Left Hand Guide

8-5

6

RF5-1515-000CN

EP Right Hand Guide #1

8-5

10

RF5-1516-000CN

Pressure Roller (5L)

8-5

4

Numerical parts list 173

Service.book Page 174 Thursday, September 14, 2000 11:15 AM

Table A-2 Numerical parts list (Continued)

174 Parts index

Part No.

Description

Fig.

Ref.

RF5-1517-000CN

Fuser Pressure Plate

8-5

5

RF5-1521-000CN

Exit Roller (5L)

8-3

16

RF5-1522-000CN

Fuser Exit Roller Assembly (5L)

8-9

7

RF5-1533-000CN

Pressure Roller Grounding Guide

8-5

14

RF5-2352-000CN

EP Door Assembly (6L)

8-2

8

RF5-2362-000CN

Pressure Roller (6L)

8-5

4

RF5-2364-000CN

Pressure Roller (6L Pro)

8-5

4

RF5-2367-000CN

Exit Roller (6L and 6L Pro)

8-3

17

RF5-2368-000CN

Fuser Exit Roller Assembly (6L and 6L Pro)

8-9

7

RF5-2372-000CN

Paper Kick Plate (6L and 6L Pro)

8-7

18

RF5-3256-000CN

EP/Cover Interlock

8-3

16

RF5-6222-000CN

Back Sheet Metal (6L Pro)

8-4

4

RG5-1942-000CN

Feed Assembly (5L)

8-8

4A

RG5-1944-000CN

Input Assembly 1 (5L)

8-2

9

RG5-1945-000CN

Input Assembly 2 (5L)

8-2

10

RG5-1947-000CN

Idler Roller Shaft Assembly

8-7

9

RG5-1951-000CN

Pickup Roller Assembly (5L)

8-7

4

RG5-1964-000CN

Heating Element (110 V) (5L)

8-5

16

RG5-1965-000CN

Heating Element (220 V) (5L)

8-5

16

RG5-1984-000CN

EP/Cover Interlock

9-3

16

RG5-1984-000CN

EP/Cover Interlock (5L)

8-3

3

RG5-1995-000CN

Main Cover (5L)

8-2

4

RG5-2000-000CN

Laser\Scanner (New) (5L)

8-3

19

RG5-2012-000CN

Delivery Assembly (5L)

8-10

RG5-2023-000CN

DC Controller PCA (110 V) (5L)

8-6

3

RG5-2024-000CN

Formatter Shield (5L)

8-6

19

RG5-2025-000CN

DC Controller PCA (220 V) (5L)

8-6

3

RG5-2028-000CN

Control Panel PCA Assembly

8-5

22

RG5-2029-000CN

Paper Pickup Sensor Cable (5L and 6L)

8-6

8

RG5-2031-000CN

Door Sensor Cable (5L)

8-6

9

RG5-2033-000CN

Motor Cable

8-6

11

RG5-2034-000CN

Scanner Cable (5L)

8-6

12

RG5-2035-000CN

Laser Cable (5L)

8-6

13

RG5-2036-000CN

Control Panel PCA Cable (5L)

8-6

5

RG5-2037-000CN

Door Switch Cable (5L)

8-6

14

RG5-3443-000CN

Main Cover (6L)

8-2

4

RG5-3453-000CN

EP/Cover Interlock

9-3

16

RG5-3453-000CN

EP/Cover Interlock (6L and 6L Pro)

8-3

16

RG5-3459-000CN

Heating Element (110 V) (6L)

8-5

16

RG5-3463-000CN

Heating Element (220 V) (6L)

8-5

16

RG5-3474-000CN

Delivery Assembly (6L)

8-10

RG5-3476-000CN

Face-up/Face-down Shaft (6L and 6L Pro)

8-9

2

EN

Service.book Page 175 Thursday, September 14, 2000 11:15 AM

Table A-2 Numerical parts list (Continued)

EN

Part No.

Description

Fig.

Ref.

RG5-3485-000CN

Feed Assembly (6L and 6L Pro)

8-8

RG5-3486-000CN

Pickup Roller Assembly (6L)

8-7

4

RG5-3488-000CN

Input Assembly 1 (6L and 6L Pro)

8-2

9

RG5-3491-000CN

Input Assembly 2 (6L and 6L Pro)

8-2

10

RG5-3494-000CN

Laser\Scanner (New) (6L)

8-3

19

RG5-3499-000CN

Control Panel PCA Cable (6L)

8-6

5

RG5-3506-000CN

DC Controller PCA (110 V) (6L)

8-6

3

RG5-3509-000CN

DC Controller PCA (220 V) (6L)

8-6

3

RG5-3510-000CN

DC Controller PCA Case Assembly (5L and 6L)

8-6

4

RG5-3661-000CN

Scanner Cable (6L and 6L Pro)

8-6

12

RG5-3662-000CN

Door Sensor Cable (6L and 6L Pro)

8-6

9

RG5-5473-060CN

Laser\Scanner (New) (6L)

8-3

19

RG5-5475-000CN

Cover Assembly (6L Pro)

8-2

14

RG5-5482-000CN

Delivery Assembly (6L Pro)

8-10

RG5-5483-000CN

Pickup Roller Assembly (6L Pro)

8-7

4

RG5-5485-000CN

DC Controller PCA Case Assembly (6L Pro)

8-6

4

RG5-5489-000CN

DC Controller PCA (220 V) (6L Pro)

8-6

3

RG5-5517-010CN

Heating Element (220 V) (6L Pro)

8-5

16

RG5-5521-000CN

Paper Pickup Sensor Cable (6L Pro)

8-6

8

RG9-1454-000CN

Control Panel PCA Cable (6L Pro)

8-6

5

RH3-8003-000CN

DC Controller Fuse FU102-110 V

8-6

RH3-8003-000CN

Fuse 102 (110 V)

8-6

RH7-1282-000CN

Main Motor (5L)

8-3

7

RH7-1320-000CN

Main Motor (6L)

8-3

7

RH7-1450-000CN

Main Motor (6L Pro)

8-3

7

RS5-0796-000CN

Pressure Roller Gear

8-5

11

RS5-2501-000CN

Kick Plate Spring

8-7

14

RY7-5005-000CN

Gear Kit #1

8-3

1

RY7-5006-000CN

Gear Kit #2 (5L)

8-3

8

RY7-5007-000CN

Fuser Release Kit

8-3

6

RY7-5009-000CN

Input Sensor Assembly

8-7

3

RY7-5036-000CN

Gear Kit #2 (6L and 6L Pro)

8-3

8

VD7-0211-002CN

DC Controller Fuse FU101-110 V

8-6

VD7-0211-002CN

Fuse 101 (110 V)

8-6

VD7-0643-151CN

DC Controller Fuse FU101-220 V

8-6

VD7-0643-151CN

Fuse 101 (220 V)

8-6

VS1-5057-002CN

Fuser Connector

8-5

15

XA9-0267-000CN

Screw

8-3

503

XA9-0686-000CN

Screw

8-5

21

XA9-0724-000CN

Screw

8-2

11

XA9-0724-000CN

Screw

8-4

9

XA9-0724-000CN

Screw

8-5

20

5

Numerical parts list 175

Service.book Page 176 Thursday, September 14, 2000 11:15 AM

Table A-2 Numerical parts list (Continued)

176 Parts index

Part No.

Description

Fig.

Ref.

XA9-0824-000CN

Screw

8-5

17

XA9-0855-000CN

Screw (with star washer)

8-4

10

XB1-1300-807CN

Screw

8-4

502

XB4-7401-0007

Screw

8-7

501

XB4-7401-0074CN

Screw

8-4

501

XB4-7401-007CN

Screw (5L and 6L)

8-2

501

EN

Service.book Page 177 Thursday, September 14, 2000 11:15 AM

B

Regulatory information

Laser Safety (U.S.)
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!

EN

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.

Laser Safety (U.S.) 177

Service.book Page 178 Thursday, September 14, 2000 11:15 AM

Laser Statement (Finland)
The following applies to printer operation and servicing in Finland.

Laserturvallisuus
Luckan 1 Laserlaite Klass 1 Laser Apparat
HP LaserJet(s) 5L/6L/6L Gold/6L Pro laserkirjoitin on käyttäjän kannalta turvallinen luokan 1
laserlaite. Normaalissa käytössä kirjoittimen suojakotelointi estää lasersäteen pääsyn laitteen
ulkopuolelle.
Kirjoittimen on hyväksynyt Suomessa laserturvallisuuden osalta Sähk"tarkastuskeskus. Laitteen
turvallisuusluokka on määritetty standardin EN 60825-1 (1994) mukaisesti.

Varoitus!
Laitteen käyttäminen muulla kuin käyttöohjeessa mainitulla tavalla saattaa altistaa käyttäjän
turvallisuusluokan 1 ylittävälle näkymättömälle lasersäteilylle.

Varning!
Om apparaten används på annat sätt än i bruksanvisning specificerats, kan användaren utsättas f"r
osynlig laserstrålning, som överskrider gränsen för laserklass 1.
HUOLTO
HP LaserJet(s) 5L/6L/6L Gold/6L Pro kirjoittimen sisällä ei ole käyttäjän huollettavissa olevia
kohteita. Laitteen saa avata ja huoltaa ainoastaan sen huoltamiseen koulutettu henkilö. Tällaiseksi
huoltotoimenpiteeksi ei katsota väriainekasetin vaihtamista, paperiradan puhdistusta tai muita
käyttäjän käsikirjassa lueteltuja, käyttäjän tehtäväksi tarkoitettuja ylläpitotoimia, jotka voidaan
suorittaa ilman erikoistyökaluja.

Varo!
Mikäli kirjoittimen suojakotelo avataan, olet alttiina näkymättömälle lasersäteilylle laitteen ollessa
toiminnassa. Älä katso säteeseen.

Varning!
Om laserprinterns skyddshölje öppnas då apparaten är i funktion, utsättas användaren för osynlig
laserstrålning. Betrakta ej strålen.
Tiedot laitteessa käytettävän laserdiodin säteilyominaisuuksista:
Aallonpituus 775-795 nm
Teho 5 mW
Luokan 3B laser

178 Regulatory information

EN

Service.book Page 179 Thursday, September 14, 2000 11:15 AM

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.

Material data safety sheet
The Material Safety Data Sheet (MSDS) can be obtained by contacting the fax-on-demand service in
the HP LaserJet Supplies website at the following address:
http://www.hp.com/go/msds
If you do not have access to the internet, call U.S. HP FIRST at 1 (800) 231-9300 and follow the
recorded instructions.
For assistance outside the U.S. and Canada, contact your local HP sales and service office. See
“Technical Assistance” in Chapter 1 for telephone numbers.

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.

EN

Laser Safety (U.S.) 179

Service.book Page 180 Thursday, September 14, 2000 11:15 AM

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:

Note

l

Reorient or relocate the receiving antenna.

l

Increase the separation between the equipment and the receiver.

l

Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.

l

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.

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.

Figure A-1

VCCI statement (Japan)

180 Regulatory information

EN

Service.book Page 181 Thursday, September 14, 2000 11:15 AM

Index
A

C

AC bias 62
AC power
See also power
disconnecting 85
distribution 56
troubleshooting 116
accessories and supplies 23
accessories, ordering 145
acoustic emissions 18
agreements, maintenance 28
alcohol, cleaning with 51, 135
alignment, troubleshooting 132
alphabetical list, part numbers 167
ammonia-based cleaners, avoiding 51
amps, specifications 18
Asia-Pacific countries/regions
toner cartridges 34
VCCI statement 180
assemblies
locating 147
removing 70
replacing 22
Authorized Service Providers, HP 28

cables
control panel 114
DC Controller 156
parallel 21
part numbers 145
pins 141
power 21
canceling print jobs 45
capacity
circuit 18
memory 14
paper 14
cards, memory
incompatible 121
installing 72
cartridges. See toner cartridges
character dropouts, troubleshooting 129
character voids, troubleshooting 128
charging rollers 57
charging, image formation system 62
checks. See tests
circuitry
AC power distribution 56
DC Controller loads 55
DC power distribution 57
overcurrent/overvoltage protection 57
specifications 18
cleaning
connection points 135
printer 51
cleaning blade 62
clearing data 45
clips, grounding 94
clothing, washing toner off 52
Commercial Service and Support Organization-Americas
(CSSO-A) 144
Commercial Service and Support Organization-Europe
(CSSO-E) 144
communications 58, 60
complex pages
errors 39
Page Protect 60
components
DC Controller 119
internal 150
paper path 118
replacing 22
condensation specifications 32
conditioning, drum 62
configuration page, printing 43
connection points, cleaning 135
connectors
DC Controller 113
J201 (DC Controller-to-Formatter) 66
parallel cable 21
power cable 21
troubleshooting 122
wiring 112

B
back cover, removing 73
backgrounds, troubleshooting
dark 131
scattered 129
Basic Hardware Training Course, ordering 22
battery backups 32, 123
BD failure, troubleshooting 132
Beam Detect
signal 62
voltage 57
beam errors 124
bias, charging 62
bidirectional communications 58, 60
bins. See Paper Input Bin; Paper Output Bin
Bi-Tronics interface 58
black pages, troubleshooting 129
black streaks, troubleshooting 127
blank pages, troubleshooting 129, 130
blank spots, troubleshooting 131
blinking indicator lights 38, 121
block diagram, functional 54
blurred areas, troubleshooting 126
buffer memory 60
buttons
control panel 40
engine test 133
bypassing formatter 133

EN

181

Service.book Page 182 Thursday, September 14, 2000 11:15 AM

consumables
life expectancies 48
ordering 144
contacts, DC Controller 119
continue from memory errors 40
continuous self-test 44
control panel
assembly, locating 147
button 40
errors 120
removing 78
service errors, displaying 123
troubleshooting 116
wiring harness 78
control panel lights. See indicator lights
conversions, voltage 29
Country of Origin 15
course materials, ordering 22
coverage, toner 49
covers
back, removing 73
cleaning 51
locating 148
main, removing 77
Memory Expansion, locating 21
Memory Expansion, removing 72
part numbers 149
CPU, formatter 58
CSSO-A (Commercial Service and Support OrganizationAmericas) 144
CSSO-E (Commercial Service and Support OrganizationEurope) 144
curled pages, troubleshooting 130, 137
Customer Care, HP 23
Customer Information Centers
Asia-Pacific countries/regions 25
customer support
HP Customer Care 23
customer support. See support
cut-off pages 60, 129
cycling power 120

D
dark backgrounds, troubleshooting 131
data
clearing 45
DC Controller-to-Formatter 66
Enhanced I/O 59
errors, troubleshooting 121
Page Protect 60
Data light 38, 121
DC bias 62
DC Controller
components 119
connectors 113
functions 55
grounding screw 111
loads 55
locating 147
paper feed operations 63
paper path components 118
part numbers 157
parts diagrams 156
power system 56
removing 111
signals 118
timing operations 66

182

DC power
distribution 57
shutoff switch 56
default settings, returning to 45
defects
image 126, 127
repetitive 128
ruler 139
delay jams 65
delivery assembly
cleaning 51
locating 147
part numbers 165
parts diagram 164
removing 80
delivery roller
locating 63
testing 138
density
control 57
EconoMode 59
toner coverage 49
troubleshooting 131
depth, printer 33
developing roller 57
developing stage 62
diagnostics. See tests
dimensions, printer 33
direct ordering of accessories and supplies 23
dirt, troubleshooting 131
display panel. See control panel
displaying service errors 123
distorted images, troubleshooting 132
distributing toner 35
documentation, ordering 22
door open/no cartridge errors
sensor (PS204) 64
troubleshooting 120, 121
doors
EP, removing 75
locating 148
memory, removing 76
part numbers 149
dots, troubleshooting 127, 129, 131
draft mode 49
DRAM. See memory
drive roller, testing 138
dropouts, troubleshooting 129
drum
operations 63
rotation functional check 134
troubleshooting 126
drum cleaning stage 62
drum conditioning stage 62
duty cycle 14

E
EconoMode 49
edges, detecting 64
electrical specifications 18
electrophotographics. See image formation system
electrostatic discharge (ESD) 70
eliminator teeth, cleaning 51
emissions
acoustic 18
ozone 179
engine errors 124
engine tests 44, 133

EN

Service.book Page 183 Thursday, September 14, 2000 11:15 AM

Enhanced I/O 59
Enhanced PCL 5 14
envelopes, input tray capacity 14
environmental specifications 32
EP Door
disabling high voltage power supply 57
locating 20
removing 75
Error light 38, 121
error messages 121, 123
errors
beam 124
engine 124
formatter 125
fuser 123
memory 121
paper 121
persistent 122
priority 120
processor 125
ROM/RAM 123
scanner 125
service 123
status messages 121
troubleshooting 120
unclearable, troubleshooting 122
ESD (electrostatic discharge) 70
Europe
Commercial Service and Support Organization (CSSOE) 144
European support 24
events, printer 66
exit roller assembly
cleaning 51
removing 79
Exit Sensor flag
removing 90
troubleshooting 122
Exit Sensor, Paper (PS201)
jam detection 65
locating 63
operations 63

flathead screwdrivers 71
flowchart, troubleshooting 116
fonts
clearing 45
downloaded 41
standard 14
storing information 58
Form Feed 40
formatter
bypassing 133
errors 125
functions 58
parts diagrams 156
removing 114
timing operations 66
voltage 57
frame, paper feed
reinstalling 100
removing 97
frequency specifications 18
Front Output Slot
feeding operations 63
locating 19
Front Panel Button
locating 19
using 40
FRUs (Field Replaceable Units) 22, 144
functional block diagram 54
fuser components, accessing 80
fuser errors 123
fuser exit roller
cleaning 51
removing 89
fuser pressure plate, removing 82
fuser roller, testing 138
fuses
locating 119
overcurrent protection 57
fusing element. See heating element
fusing problems 83
fusing stage 62

G
F
fabric, washing toner off 52
face-up output slot. See Front Output Slot
face-up/face-down lever. See paper path lever
factory default settings, returning to 45
faded print, troubleshooting 127
fasteners, types of 146
FCC statement 180
feed assembly
locating 147
part numbers 161
parts diagram 160
removing 106
roller operations 63
feed frame, paper
reinstalling 100
removing 97
feeding operations 63
Field Replaceable Units (FRUs) 22, 144
Finnish laser safety statement 178
firmware errors 125
first print 18
flags
removing Paper Exit Sensor flag 90
troubleshooting 122
flashing lights 38, 121

EN

gear, paper pickup 92
Gold, HP LaserJet 6L 14
graphics, cut off 129
grease, pressure roller 87
grounding clips 94
grounding screws, DC Controller 111
guides
memory door, removing 109
paper, locating 19
transfer roller, removing 101

H
half-self test functional check 134
hardware service options 28
hardware training kits, ordering 22
heating element
AC voltage control 56
avoid touching 51
life expectancy 48
locating 63
removing 84
resistance, normal 123
height, printer 33
hex-head screws 146

183

Service.book Page 184 Thursday, September 14, 2000 11:15 AM

high voltage power supply
operations 57
testing 135
voltage 57
horizontal lines, troubleshooting
black 128
white 132
HP Authorized Service Providers 28
HP Customer Care 23
European and in-country support 24
product repair assistance 24
worldwide options 24
HP Customer Information Centers
Asia-Pacific countries/regions 25
HP Direct Ordering 23
HP LaserJet 6L Gold 14
HP LaserJet Printer Family Paper Specification Guide 22
HP Repair Services 28
HP Support Assistant compact disc 23
humidity specifications 32

I
I/O interface
communications 58
Enhanced 59
identification labels 15
Idler Roller tabs 96
image defect ruler 139
image defects, troubleshooting 126, 127
image developing stage 62
image formation system
stages 61
synchronization 58
testing 134
image fusing stage 62
image transferring stage 62
image writing stage 62
incompatible memory cards 121
indicator lights
blinking 38, 121
locating 19
power on 116
service errors 123
states 38
status messages 121
Information Centers
Asia-Pacific countries/regions 25
ink cartridges. See toner cartridges
Input Bin, Paper
capacity 14
operations 63
Input Extender 73
input power receptacle 119
Input Slot, Single Sheet
locating 19
operations 63
Input Supports, Paper 19
Input Tray, Paper
locating 19
installation specifications 32
installing toner cartridges 35
insufficient memory 39
interfaces
communications 58, 60
standard 14
internal components 150
INTR (initial rotation) 66

184

isolating
print settings 60
printer problems 133, 134

J
J201 (DC Controller-to-Formatter connector) 66
jams, paper
detection 65
error priority 120
troubleshooting 121
Japanese Electronic Device Industry Association. See
JEDIA
Japanese VCCI statement 180
JEDIA cards 14
jobs
canceling 45
settings 60

K
kick plate
operations 63
removing 102
spring reinstallation 103
testing 138

L
languages, printer 14
laser safety statements
Finland 178
United States 177
Laser/Beam Detect circuitry, voltage 57
Laser/Scanner Assembly
cautions 70
control 56
operations 63
removing 91
LaserJet 6L Gold 14
LaserJet Printer Family Paper Specification Guide 22
leading edges, detecting 64
leaking toner 126
LEDs. See indicator lights
lenses, operations 62
levers
face-up/face-down, removing 88
paper path 19
Paper Release 20
life expectancies, consumables 48
light print, troubleshooting 127
lights. See indicator lights
lines, troubleshooting
horizontal black 128
horizontal white 132
vertical black 127
vertical white 127, 128
lists, part numbers
alphabetical 167
numerical 172
LSTR (last rotation) 66

M
machine screws 146
main cover, removing 77
main wiring diagram 140
maintenance agreements 28
manual feed
error priority 120
troubleshooting 121

EN

Service.book Page 185 Thursday, September 14, 2000 11:15 AM

Material Safety Data Sheet (MSDS) 179
maximum paper size 14
memory
capacity 14
clearing 45
Enhanced I/O 59
error priority 120
errors, continuing from 40
errors, troubleshooting 121
incompatible cards, troubleshooting 121
installing 72
insufficient 39
operations 58
Page Protect 60
part numbers 145
ROM/RAM errors 123
standard 14
upgrading 145
memory door guide, removing 109
memory door, removing 76
Memory Enhancement technology (MEt) 59
Memory Expansion Cover
locating 21
removing 72
messages
persistent 122
printer status 121
priorities, error 120
service errors 123
microprocessor, formatter 58
minimum paper size 14
mirror, operations 62
model numbers 15
models, HP LaserJet 6L 14
monthly usage 14
motor
control 56
locating 63
observing rotation 138
removing 110
rotation on power-on 116
troubleshooting 116
voltage 57
mylar sheet, positioning 77

N
needlenose pliers 71
negative charging 62
noise level 18
numbers, model 15
numerical list, part numbers 172

O
ohms, normal resistance 123
online support services 23
operating environment 32
operations
DC Controller 55
formatter 58
image formation system 61
interface communications 58
overview 54
paper feed system 63
power system 56
timing stages 66
toner cartridges 61

EN

ordering
accessories and supplies 23, 145
consumables 144
documentation 22
parts 144
Output Bin, Paper
capacity 14
feeding operations 63
locating 19
Output Slot, Front
feeding operations 63
locating 19
Output Supports, Paper 19
outside covers. See covers
overcurrent/overvoltage protection 57
overriding PS204 and SW101 138
ozone emissions 179

P
page out 18
Page Protect 60
pages per minute 14
pages per month 14
pages, troubleshooting
black 129
blank 130
blank spots 131
curled 130, 137
cut off 129
dirty 131
skewed 132
paper
capacity 14
curl, troubleshooting 130, 137
sizes 14
specification guide, ordering 22
troubleshooting 137
Paper Exit Sensor (PS201)
jam detection 65
locating 63
operations 63
Paper Exit Sensor flag
removing 90
troubleshooting 122
paper feed frame
reinstalling 100
removing 97
paper feed system 58, 63
Paper Guides 19
Paper Input Assembly, removing 77
Paper Input Bin
capacity 14
operations 63
Paper Input Support 19
Paper Input Tray
locating 19
paper jams
detection 65
error priority 120
troubleshooting 121
paper out errors
priority 120
troubleshooting 121
Paper Out flag, troubleshooting 122
Paper Out Sensor (PS202)
jam detection 65
locating 63
operations 63, 64

185

Service.book Page 186 Thursday, September 14, 2000 11:15 AM

Paper Output Bin
capacity 14
feeding operations 63
locating 19
Paper Output Supports 19
paper path
components 118
curl, reducing 137
diagram 63
feeding system 63
testing 138
paper path lever
locating 19
removing 88
paper pickup assembly. See pickup assembly
paper pickup gear, removing 92
paper pickup roller assembly. See pickup roller assembly
paper pickup roller. See pickup roller
Paper Pick-up Solenoid (SL1) 64
Paper Registration flag, troubleshooting 122
Paper Registration Sensor (PS203)
jam detection 65
locating 63
operations 63, 64
Paper Release Lever, locating 20
parallel cables
connector, locating 21
ordering 145
parallel interface 58
part numbers
alphabetical list 167
covers and doors 149
internal components 151
models 144
numerical list 172
parts
identifying 19
ordering 144
replacing 70
Parts Exchange Program 22
path, paper
components 118
curl, reducing 137
diagram 63
feeding system 63
lever location 19
testing 138
patterns, lights 123
PCL
standard 14
Technical Reference Information Package, ordering 22
performance specifications 18
Phillips screwdrivers 71
phone numbers
Commercial Service and Support OrganizationAmericas (CSSO-A) 144
Commercial Service and Support Organization-Europe
(CSSO-E) 144
ordering consumables 144
ordering parts 22
part numbers, information on 144
photosensitive drum. See drum
photosensors. See sensors
pickup assembly
life expectancy 48
locating 147
pickup gear, removing 92
pickup jams 65

186

pickup roller
cleaning 51
locating 63
operations 63
removing 94
testing 138
pickup roller assembly
locating 147
part numbers 159
parts diagram 158
pins
cable 141
cleaning 135
PJL (Printer Job Language) 60
plate, pressure 82
pliers 71
PosiDrive screwdrivers 71
positive charging 62
power
cycling 120
DC Controller system 56
distribution 56
motor rotation 116
overcurrent/overvoltage protection 57
rating information 15
shutoff switch 56
specifications 18
testing high voltage power supply 135
troubleshooting 116
power cable connector, locating 21
power cord, unplugging 70
power receptacle 119
power supplies, uninterruptible (UPS) 32, 123
power-on jams 65
pressure plate, removing 82
pressure roller
cleaning 51
life expectancy 48
locating 63
operations 63
removing 87
pressure, inadequate 83
print cartridges. See toner cartridges
print jobs, canceling 45
print quality, troubleshooting 126, 127
print speed 14
printer door
sensor 64
shutoff switch 56
Printer Job Language (PJL) 60
printer motor. See motor
printing
engine test 133
image formation system 61
priority, errors 120
PRNT 66
procedures
error troubleshooting 120
service 22
troubleshooting 116
processor errors 125
processor, formatter 58
product repair assistance 24
Production Code 15
PS204, overriding 138
purchasing parts 144

EN

Service.book Page 187 Thursday, September 14, 2000 11:15 AM

Q
quality, troubleshooting 126, 127
Quick Reference Service Guide, HP LaserJet Family 22

R
RAM. See memory
Ready light 38, 121
receptacle, power 119
recovering from errors 40
recycling toner cartridges 50
redistributing toner 35
refilled toner cartridges 50
registration
adjusting 133
troubleshooting 132
Registration flag, troubleshooting 122
Registration Sensor (PS203)
jam detection 65
locating 63
operations 63, 64
regulatory information 177
reinstalling parts 70
Release Lever, Paper 20
remanufactured assemblies 22
removing parts 70
repair assistance 24
repair method 22
repair offices, HP 28
repetitive defects, troubleshooting 128
repetitive image defect ruler 139
replacing
consumables 48
parts 70
resetting printer 45
resistance, heating element 123
resolution 14
Resolution Enhancement technology (REt) 59
Revision Level 15
rollers
cleaning 51
exit, removing 79
fuser exit roller assembly, removing 89
Idler Roller tabs 96
life expectancies 48
locating 63
operations 63
pickup, removing 94
power supply 57
pressure, removing 87
testing motion 138
transfer, removing 101
ROM. See memory
ROM/RAM errors 123
rotational check, drum 134
ruler, repetitive image defect 139

S
safety statements
laser 177, 178
Material Safety Data Sheet (MSDS) 179
toner 179
sales and service offices 25
scanner errors 125
scanner motor
locating 119
voltage 57
screwdrivers, required 71

EN

screws
self-tapping, installing 70
types of 146
self tests
printing 41, 44
troubleshooting 117
self-tapping screws, installing 70
sending data 59
sensors
functions 64
locating 64
operations 63
paper jam 65
troubleshooting 122
voltage 57
separation guide assembly
locating 147
part numbers 163
parts diagram 162
separation pad
cleaning 51
life expectancy 48
operations 63
removing 104
spring removal 102
sequence of operations 66
serial data bus 66
serial numbers 15
service approach 22
service errors
messages 123
priority 120
service options 28
Service Providers, Authorized 28
settings
default 45
job 60
shaking toner cartridges 35
shipping guidelines 28, 34
signals, paper path 118
Single Sheet Input Slot
locating 19
operations 63
sizes, paper 14
skewed images, troubleshooting 132
SleepMode
electrical specifications 18
entering 57
indicator lights 38
troubleshooting 122
waking printer 40
smears, troubleshooting
black 127
horizontal 128
solenoids
functions 64
locating 64
operations 63
removing 92
testing 138
voltage 57
solvents 51
sound specifications 18
space requirements 33

187

Service.book Page 188 Thursday, September 14, 2000 11:15 AM

specifications
dimensions 33
electrical 18
environmental 32
performance 18
space requirements 33
speed
first print 18
pages per minute 14
spilled toner
checking for 126
cleaning 52
springs
cleaning 135
fuser pressure plate 83
kick plate 102, 103
Paper Exit Sensor flag 90
transfer roller 101
stages
image formation system 61
isolating problems 134
printer operations 66
stains, troubleshooting 127
star screws 146
static discharge 70
static eliminator teeth, cleaning 51
status information, relaying 58, 60
status, indicator lights 38
STBY (standby) 66
stopping print jobs 45
storing
product 32
toner cartridges 34
streaks, troubleshooting
horizontal black 128
vertical black 127
vertical white 127, 128
subassemblies, replacing 22
subpads
life expectancy 48
operations 63
removing 105
supplies and accessories 23
supplies, cleaning 51
supplies, ordering 145
support
Commercial Service and Support Organizations 144
HP Software and Accessory Distribution Center (SADC)
22
service options 28
worldwide 25
Support Assistant compact disc 23
supports, paper 19
SW101, overriding 138
switches, overriding 138
systems, printer 54

188

T
tabs, Idler Roller 96
teeth, static eliminator 51
temperature specifications 32
tests
drum rotation 134
engine 44, 133
half-self test 134
high voltage power supply 135
paper path 138
self 44
text coverage, toner 49
text quality, troubleshooting 128, 129
theory of operations. See operations
thermistor, normal resistance 123
timing stages 66
toner
cleaning spilled 52
fusing 62
safety statements 179
scatter, troubleshooting 129
waste cleaning stage 62
toner cartridges
Asia-Pacific region 34
compartment, locating 20
components 61
distributing toner 35
EconoMode 49
errors, troubleshooting 121
guidelines 35
installing 35
life expectancy 48, 49
operations 61
part numbers 145
recycling 50
refilled 50
removing 70
sensor (PS204) 64
storing 34
troubleshooting 126
warranty 29
weight 33, 126
tools, required 71
trailing edges, detecting 64
training kits, ordering 22
transfer roller
cleaning 51
life expectancy 48
locating 20, 63
removing 101
testing 138
transfer roller assembly, locating 147
transfer roller guide, removing 101
transferring stage 62
trays. See Paper Input Bin; Paper Output Bin

EN

Service.book Page 189 Thursday, September 14, 2000 11:15 AM

troubleshooting
beam errors 124
connectors 122
control panel 116
curled pages 130, 137
drum 126
engine errors 124
errors 120, 121
flags, sensor 122
flowchart 116
formatter errors 125
fuser errors 123
image defects 126, 127
incompatible memory cards 121
memory errors 121
motor 116
paper 137
paper curl 130, 137
paper jams 121
paper out errors 121
paper path 138
persistent errors 122
power 116
processor errors 125
repetitive defects 128, 139
ROM/RAM errors 123
scanner errors 125
self test 44, 117
sensors 122
service errors 123
SleepMode 122
status messages 121
toner cartridges 126
unclearable errors 122
trus head screws 146
typefaces. See fonts

W
WAIT 66
waking printer 40
warranty
post-warrant assistance 24
product 28
refilled toner cartridges 50
toner cartridges 29
waste toner, cleaning 62
watts, specifications 18
websites
product information 23
weight
printer 33
toner cartridge 33, 126
white areas, troubleshooting 128
white lines, troubleshooting
horizontal 132
vertical 127, 128
white pages, troubleshooting 130
width, printer 33
wiring
control panel 78
HP LaserJet 6L Pro 112
main diagram 140
worldwide
customer care options 24
wrinkled pages, troubleshooting 130
writing stage 62

U
unclearable errors, troubleshooting 122
uninterruptible power supplies (UPS) 32, 123
unplugging before servicing 70
upgrading memory 145
User’s Guides, ordering 22

V
vacuuming toner 52
VCCI statement 180
ventilation requirements 32
vertical lines, troubleshooting
black 127
white 127, 128
VIDEO signals 58
voids, character 128
voltage
AC power distribution 56
conversions, not supported 29
DC power distribution 57
electrical specifications 18
heating element, disconnecting 85
overvoltage protection 57
part numbers 144

EN

189

Service.book Page 190 Thursday, September 14, 2000 11:15 AM

190

EN

®

© Copyright 2002
Hewlett-Packard Co.

Manual Part No.
C8060-90903

*C8060-90903*
*C8060-90903*
C8060-90903



---

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