Epson C40UX Service Manual Stylus C40SX C20UX C20SX Rev B
User Manual: Epson Service Manual La Biblioteca de los 8 bits
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SERVICE MANUAL Color Inkjet Printer Stylus C40UX/C40SX/C20UX/C20SX ® SEIJ01002 Notice All rights reserved. No part of this manual may be reproduced, stored in a retrieval system, or transmitted in any form or by any means electronic, mechanical, photocopying, or otherwise, without the prior written permission of SEIKO EPSON CORPORATION. All effort have been made to ensure the accuracy of the contents of this manual. However, should any errors be detected, SEIKO EPSON would greatly appreciate being informed of them. The contents of this manual are subject to change without notice. The above not withstanding SEIKO EPSON CORPORATION can assume no responsibility for any errors in this manual or the consequences thereof. EPSON is a registered trademark of SEIKO EPSON CORPORATION. General Notice: Other product names used herein are for identification purpose only and may be trademarks or registered trademarks of their respective owners. EPSON disclaims any and all rights in those marks. Copyright © 2001 SEIKO EPSON CORPORATION. Imaging & Information Product Division TPCS Quality Assurance Department PRECAUTIONS Precautionary notations throughout the text are categorized relative to 1)Personal injury and 2) damage to equipment. DANGER Signals a precaution which, if ignored, could result in serious or fatal personal injury. Great caution should be exercised in performing procedures preceded by DANGER Headings. WARNING Signals a precaution which, if ignored, could result in damage to equipment. The precautionary measures itemized below should always be observed when performing repair/maintenance procedures. DANGER 1. ALWAYS DISCONNECT THE PRODUCT FROM THE POWER SOURCE AND PERIPHERAL DEVICES PERFORMING ANY MAINTENANCE OR REPAIR PROCEDURES. 2. NO WORK SHOULD BE PERFORMED ON THE UNIT BY PERSONS UNFAMILIAR WITH BASIC SAFETY MEASURES AS DICTATED FOR ALL ELECTRONICS TECHNICIANS IN THEIR LINE OF WORK. 3. WHEN PERFORMING TESTING AS DICTATED WITHIN THIS MANUAL, DO NOT CONNECT THE UNIT TO A POWER SOURCE UNTIL INSTRUCTED TO DO SO. WHEN THE POWER SUPPLY CABLE MUST BE CONNECTED, USE EXTREME CAUTION IN WORKING ON POWER SUPPLY AND OTHER ELECTRONIC COMPONENTS. 4. WHEN DISASSEMBLING OR ASSEMBLING A PRODUCT, MAKE SURE TO WEAR GLOVES TO AVOID INJURIER FROM METAL PARTS WITH SHARP EDGES. WARNING 1. REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTIFIED REPAIR TECHNICIAN. 2. MAKE CERTAIN THAT THE SOURCE VOLTAGES IS THE SAME AS THE RATED VOLTAGE, LISTED ON THE SERIAL NUMBER/RATING PLATE. IF THE EPSON PRODUCT HAS A PRIMARY AC RATING DIFFERENT FROM AVAILABLE POWER SOURCE, DO NOT CONNECT IT TO THE POWER SOURCE. 3. ALWAYS VERIFY THAT THE EPSON PRODUCT HAS BEEN DISCONNECTED FROM THE POWER SOURCE BEFORE REMOVING OR REPLACING PRINTED CIRCUIT BOARDS AND/OR INDIVIDUAL CHIPS. 4. IN ORDER TO PROTECT SENSITIVE MICROPROCESSORS AND CIRCUITRY, USE STATIC DISCHARGE EQUIPMENT, SUCH AS ANTI-STATIC WRIST STRAPS, WHEN ACCESSING INTERNAL COMPONENTS. 5. DO NOT REPLACE IMPERFECTLY FUNCTIONING COMPONENTS WITH COMPONENTS WHICH ARE NOT MANUFACTURED BY EPSON. IF SECOND SOURCE IC OR OTHER COMPONENTS WHICH HAVE NOT BEEN APPROVED ARE USED, THEY COULD CAUSE DAMAGE TO THE EPSON PRODUCT, OR COULD VOID THE WARRANTY OFFERED BY EPSON. About This Manual This manual describes basic functions, theory of electrical and mechanical operations, maintenance and repair procedures of the printer. The instructions and procedures included herein are intended for the experienced repair technicians, and attention should be given to the precautions on the preceding page. Manual Configuration This manual consists of six chapters and Appendix. CHAPTER 1. PRODUCT DESCRIPTIONS Provides a general overview and specifications of the product. CHAPTER 2. OPERATING PRINCIPLES Describes the theory of electrical and mechanical operations of the product. CHAPTER 3. TROUBLESHOOTING Describes the step-by-step procedures for the troubleshooting. CHAPTER 4. DISASSEMBLY / ASSEMBLY Describes the step-by-step procedures for disassembling and assembling the product. CHAPTER 5. ADJUSTMENT Provides Epson-approved methods for adjustment. CHAPTER 6. MAINTENANCE Provides preventive maintenance procedures and the lists of Epson-approved lubricants and adhesives required for servicing the product. APPENDIX Provides the following additional information for reference: • Connector pin assignments • Electric circuit boards components layout • Electrical circuit boards schematics • Exploded diagram & Parts List Symbols Used in this Manual Various symbols are used throughout this manual either to provide additional information on a specific topic or to warn of possible danger present during a procedure or an action. Be aware of all symbols when they are used, and always read NOTE, CAUTION, or WARNING messages. A D J U S T M E N T R E Q U IR E D C A U T IO N C H E C K P O IN T W A R N IN G Indicates an operating or maintenance procedure, practice or condition that is necessary to keep the product’s quality. Indicates an operating or maintenance procedure, practice, or condition that, if not strictly observed, could result in damage to, or destruction of, equipment. May indicate an operating or maintenance procedure, practice or condition that is necessary to accomplish a task efficiently. It may also provide additional information that is related to a specific subject, or comment on the results achieved through a previous action. I.ndicates an operating or maintenance procedure, practice or condition that, if not strictly observed, could result in injury or loss of life. Indicates that a particular task must be carried out according to a certain standard after disassembly and before re-assembly, otherwise the quality of the components in question may be adversely affected. Revision Status Revision Issued Date A May 31. 2001 First Release July 10. 2001 Chapter 2 • Page 38 : Ink consumption of Initial charge was revised. Chapter 4 • Page 58 : Warning message was deleted. • Page 61 : Caution message regarding disassembly and assembly was added. • Page 63 : Adjustment Requested message for Top Margin adjustment was added. • Page 65 : Reassembly message for inserting PS cable was revised. • Page 68~70 : Disassembly procedure for Paper Guide Upper/Left was added. • Page 76 : Adjustment Requested message for Top Margin adjustment was added. Chapter 5 • Page 88,89 : Adjustment procedure for Top Margin was revised. B Description CONTENTS Chapter 1 PRODUCT DESCRIPTION 1.1 FEATURES ......................................................................................................... 9 1.7 INK CARTRIDGE ........................................................................................... 23 1.7.1 Black Ink Cartridge ................................................................................... 23 1.7.2 Color Ink Cartridge .................................................................................... 23 1.2 Differences between the Stylus C20 and the Stylus C40 ................................. 9 1.3 SECIFICATIONS ............................................................................................. 1.3.1 Physical Specification ................................................................................ 1.3.2 Printing Specification ................................................................................ 1.3.3 Paper Feeding ............................................................................................ 1.3.4 Input Data Buffer ....................................................................................... 1.3.5 Electrical specification ............................................................................... 1.3.6 Envirormental Condition ........................................................................... 1.3.7 Reliability .................................................................................................. 1.3.8 Safety Approvals ....................................................................................... 1.3.9 Acoustic Noise ........................................................................................... 1.3.10 CE Marking ............................................................................................. 10 10 10 11 11 11 12 12 12 12 12 1.4 INTERFACE ..................................................................................................... 1.4.1 USB Interface ............................................................................................ 1.4.2 Parallel Interface (Forward Channel) ........................................................ 1.4.3 Parallel Interface (Reverse Channel) ......................................................... 1.4.4 Prevention Hosts from Data Transfer Time-out ........................................ 1.4.5 IEEE1284.4 Protocol ................................................................................. 13 13 13 15 16 17 1.5 OPERATOR CONTROLS .............................................................................. 1.5.1 Operate Switch ........................................................................................... 1.5.2 Control Panel ............................................................................................. 1.5.3 Panel Functions .......................................................................................... 1.5.4 Printer Condition and Panel Status ............................................................ 1.5.5 Printer Initialization ................................................................................... 1.5.6 Errors ......................................................................................................... 18 18 18 18 18 19 19 1.6 PAPER ............................................................................................................... 1.6.1 Paper Handling .......................................................................................... 1.6.2 Paper Specification .................................................................................... 1.6.3 Printing Area .............................................................................................. 20 20 20 21 Chapter 2 Operating Principles 2.1 Overview ............................................................................................................ 2.1.1 Printer Mechanism ..................................................................................... 2.1.2 Printhead .................................................................................................... 2.1.2.1 Printing Process ................................................................................. 2.1.2.2 Printing Method ................................................................................. 2.1.3 Carriage Mechanism .................................................................................. 2.1.4 Paper Feeding Mechanism ......................................................................... 2.1.5 Paper Loading Mechanism (ASF Unit) ..................................................... 2.1.6 Ink System Mechanism ............................................................................. 2.1.6.1 Pump Unit & Wiper mechanism ....................................................... 2.1.6.2 Capping Mechanism .......................................................................... 2.1.7 Ink Sequence .............................................................................................. 2.1.8 Printing mode ............................................................................................ 25 25 26 27 27 28 30 31 35 35 36 38 40 2.2 Electrical Circuit Operating Principles .......................................................... 2.2.1 C417 PSB/PSE board ................................................................................ 2.2.2 C413 MAIN/B Board ................................................................................ 2.2.2.1 Main elements ................................................................................... 41 41 43 43 Chapter 3 Troubleshooting 3.1 Overview ............................................................................................................ 45 3.2 Troubleshooting with LED Error Indications ............................................... 46 Chapter 4 Disassembly and Assembly 4.1 Overview ............................................................................................................ 57 4.1.1 Precautions ................................................................................................. 57 4.1.2 Tools .......................................................................................................... 59 4.1.3 Screws ........................................................................................................ 59 4.1.4 Work Completion Check ........................................................................... 60 4.2 Disassembly ....................................................................................................... 4.2.1 Upper housing removal .............................................................................. 4.2.2 ASF unit removal ....................................................................................... 4.2.3 Waste ink pad removal .............................................................................. 4.2.4 PS unit removal .......................................................................................... 4.2.5 Paper eject roller removal .......................................................................... 4.2.6 Paper Guide Upper/Left removal ............................................................... 4.2.7 MAIN board removal ................................................................................ 4.2.8 CR motor removal ..................................................................................... 4.2.9 Printhead unit removal ............................................................................... 4.2.10 LD unit removal ....................................................................................... 4.2.11 Printer mechanism removal ..................................................................... 61 61 63 64 65 66 68 71 73 74 76 77 Chapter 5 Adjustment 5.1 Overview ............................................................................................................ 5.1.1 Required Adjustment ................................................................................. 5.1.2 Adjustment Program Initial Setting menu ................................................. 5.1.3 Adjustment Program feature ...................................................................... 5.1.4 EEPROM initial setting ............................................................................. 5.1.5 Head ID ...................................................................................................... 5.1.6 Bi-D ........................................................................................................... 5.1.7 USB ID ...................................................................................................... 5.1.8 Top margin ................................................................................................. 5.1.9 Head cleaning ............................................................................................ 5.1.10 Initial ink charge ...................................................................................... 5.1.11 Refurbishment for DOA .......................................................................... 5.1.12 Protection counter check .......................................................................... 5.1.13 EEPRON check ....................................................................................... 5.1.14 EEPROM back up data ............................................................................ 5.1.15 A4 pattern will print ................................................................................. 79 79 80 81 83 83 85 86 88 89 90 90 92 94 95 96 Chapter 6 Maintenance 6.1 Overview ............................................................................................................ 99 6.1.1 Cleaning ..................................................................................................... 99 6.1.2 Service Maintenance ................................................................................ 100 6.1.3 Lubrication ............................................................................................... 100 Chapter 7 Appendix 7.1 Connector Summary ...................................................................................... 104 7.1.1 Major Component Unit ............................................................................ 104 7.2 EEPROM Address Map ................................................................................ 106 7.3 Component Layout ......................................................................................... 110 7.4 Parts List ......................................................................................................... 112 7.5 Exploded Diagram .......................................................................................... 113 7.6 Electrical Circuits ........................................................................................... 119 CHAPTER 1 PRODUCT DESCRIPTION Stylus C40UX/C40SX/C20UX/C20SX 1.1 FEATURES High color print quality - 1440 (H) x 720 (V) dpi printing - 4 color printing (YMCK) Revision B 1.2 Differences between the Stylus C20 and the Stylus C40 The Stylus C20 and Stylus C40 are mechanically the same, but the throughput of the Stylus C40 is slightly higher than that of the Stylus C20. (Refer to Table 1-1.) Table 1-1. Throughput - Traditional and New Microweave Built-in auto sheet feeder Models memo economy Normal - Holds 100 cut-sheets (65 g/m²) Stylus C20 6.5 PPM 3.0 PPM - Holds 10 envelopes Stylus C40 8.0 PPM 3.5 PPM - Holds 10 transparency films Built-in 1 I/F Interface specification for each model are as the following. In both models, demarcation is determined by the EEPROM value 29. When the value of bit 0 is 1, a wait of 40 msec is inserted for each CR pass during printing, then the next operation starts. Parallel Interface .EPSON Stylus C40SX .EPSON Stylus C20SX Table 1-2. Delay of oparation USB Interface .EPSON Stylus C40UX .EPSON Stylus C20UX Windows / Macintosh exclusive PRODUCT DESCRIPTION EEPROM 29 bit 0 value Model Delay time during printing 0 Stylus C40 None 1 Stylus C20 CR 40 msec for each pass. FEATURES 9 Stylus C40UX/C40SX/C20UX/C20SX 1.3 SECIFICATIONS This section covers specifications of the printer. 1.3.1 Physical Specification Weight : 2.48kg (without the ink cartridges) Dimension : 424 mm(W) x 227 mm (D) x 168 mm (H) (Printing) Revision B 1.3.2 Printing Specification Print method : On demand ink jet Nozzle Configuration : monochrome 48 nozzles : color 15 nozzles x 3 (Cyan, Magenta, Yellow) Print direction : Bi-direction with logic seeking Print speed & Printable columns Character mode : Black only Character Pitch Character Quality Printable Columns CR Speed 10CPI LQ 80 Columns 20IPS Raster graphics mode Figure 1-1. Stylus C40/C20 Dimensions Horizontal resolution Printable area Available dot CR Speed Notes 480 dpi 8.26 inch 3968 14.1 IPS Black mode 360 dpi 8.26 inch 2976 23.8 IPS - 720 dpi 8.26 inch 5952 20 IPS - 1440 dpi 8.26 inch 11904 20 IPS - Control code* : ESC/P R4C7050 exclusive : EPSON Remote command Character tables* : none ASCII 20h to 7Fh code support. Typeface* Bit map LQ font :EPSON Courier 10 CPI International character sets * : None * Do not mention to the user’s manual about control code, character table, typeface and International character sets. PRODUCT DESCRIPTION SECIFICATIONS 10 Stylus C40UX/C40SX/C20UX/C20SX Revision B 1.3.3 Paper Feeding 1.3.5 Electrical specification Feeding method : Friction feed with ASF 120 V version Paper path : Cut-sheet ASF (Top entry) Rated voltage : AC 120 V Feed speed : Input voltage range : AC 99 - 132 V Rated frequency range : 50 - 60 Hz Feed condition Time Speed 10.16mm(0.4 inch) feed 110msec 92.36mm (3.64inch)/sec Input frequency range : 49.5 - 60.5 Hz Continuous feed 140msec 139.7mm (5.5inch)/sec Rated current : 0.4A Power consumption : Approx. 16W (ISO/IEC 10561 Letter pattern : Approx. 4W in standby mode : Energy Star compliant 1.3.4 Input Data Buffer Buffer size :12 Kbytes Insulation Resistance :10 M ohms min. (between AC line and chassis, DC 500 V) Dielectric strength : AC 1000 V rms. 1 minute or AC 1200 V rms. 1 second (between AC line and chassis) 220-240 V version Rated voltage : AC 220 - 240 V Input voltage range : AC 198 - 264 V Rated frequency range : 50 - 60 Hz Input frequency range : 49.5 - 60.5 Hz Rated current : 0.2A Power consumption : Approx. 16W (ISO/IEC 10561 Letter pattern : Approx. 4W in standby mode : Energy Star compliant PRODUCT DESCRIPTION SECIFICATIONS Insulation Resistance :10 M ohms min. (between AC line and chassis, DC 500 V) Dielectric strength : AC 1500 V rms. 1 minute (between AC line and chassis) 11 Stylus C40UX/C40SX/C20UX/C20SX Revision B 1.3.6 Envirormental Condition 1.3.8 Safety Approvals Temperature 120 V version : : 10 to 35 ºC (operating *3 ) : -20 to 60 ºC(non-operating, *1) 1 month at 40 ºC 120 hours at 60 ºC Humidity : 20 to 80% RH (operating, *2,*3) : 5 to 85% RH (non-operating, *1, *2) Resistance to shock : 1 G, within 1 ms (operating) : 2 G, within 2 ms (non-operating, *1) Resistance to vibration : 0.15G (operating) : 0.50G (non-operating, *1) Safety standards : UL1950 with D3 CSA C22.2 No.950 with D3 EMI : FCC part15 subpart B class B CSA C108.8 class B 220-240 V version : Safety standards : EN 60950(VDE) EMI : EN 55022(CISPR Pub.22) class B : AS/NZS 3548 class B *1: with shipment container *2: without condensation *3: Condition is as following figure. 1.3.9 Acoustic Noise Level : Approx. 45 dB(A) (According to ISO 7779) 1.3.10 CE Marking 220-240 V version Low Voltage Directive 73/23/EEC : EN60950 EMC Directive 89/336/EEC : EN55022 Class B EN61000-3-2 EN61000-3-3 EN50082-1 IEC801-2 IEC801-3 IEC801-4 Figure 1-2. Environmental Condition 1.3.7 Reliability Total print volume : 10,000 pages (A4, Letter) or 20,000 pages (A4, Letter) *refer to “EEPROM Address Map” on page -106 Print Head Life : 4000 million dots/nozzle PRODUCT DESCRIPTION SECIFICATIONS 12 Stylus C40UX/C40SX/C20UX/C20SX Revision B 1.4 INTERFACE 1.4.2 Parallel Interface (Forward Channel) Interface specification for each model are as the following. Parallel Interface :EPSON Stylus C40SX .EPSON Stylus C20SX USB Interface :EPSON Stylus C40UX .EPSON Stylus C20UX *This printer interface as standard. 1.4.1 USB Interface Transmission mode : 8 bit parallel, IEEE-1284 compatibility mode Synchronization : By STROBE pulse Handshaking : By BUSY and ACKNLG signal Signal level : TTL compatible level Adaptable connector : 57-30360(amphenol) or equivalent BUSY signal is set high before setting either -ERROR low or PE high and held high until all these signals return to their inactive state. Standard : based on “Universal Serial Bus Specifications Revision 1.1” “Universal Serial Bus Device Class Definition for Printing Devices Version 1.1” Bit rate : 12Mbps (Full Speed Device) Data encording : NRZI Adaptable connector : USB Series B Recommended cable length : 2 meters BUSY signal is at high level in the following cases. -During data entry (see Data transmission timing) -When input data buffer is full -During -INIT signal is at low level or during hardware initialization -During printer error (See -ERROR signal) Pin No. Signal name In/Out 1 VCC - 2 Data bi-directional Data ERROR signal is at low level when the printer is in one of the following states. -Printer hardware error (fatal error) -Paper-out error -Paper-jam error -Ink-out error -Ink overflow error 3 +Data bi-directiona data, pull up to +3.3V via 1.5K ohm resistor PE signal is at high level during paper-out error. 4 Ground - Connect er pin assinment and signals: Function description Cable power. Maximum power consumption is 100mA Cable ground Data transmission timing : DATA -STROBE BUSY -ACKNLG Figure 1-3. USB Pin Assignment PRODUCT DESCRIPTION INTERFACE 13 Stylus C40UX/C40SX/C20UX/C20SX Revision B Connector pin assignment and signals : Parameter Minimum Maximum Parameter Minimum Maximum Pin No. Signal Name Return tsetup 500 ns - treply 0 - GND pin In/Out thold 500 ns - tack 500 ns 10 us 1 -STROBE 19 In tstb 500 ns - tnbusy 0 - 2 DATA0 20 In tready 0 - tnext 0 - tbusy - 500 ns 3 DATA1 21 In 4 DATA2 22 In tt-out* - 120 ns * Rise and fall time of every output signals tt-in** - 200 ns 5 DATA3 23 In ** Rise and fall time of every input signals 6 DATA4 24 In ***Typical time of tack is shown below. 7 DATA5 25 In 8 DATA6 26 In 9 DATA7 27 In 10 -ACKNLG 28 Out This signal is a negative pulse indicating that the printer can again accept data. 11 BUSY 29 Out A high signal indicates that the printer cannot receive data. 12 PE 28 Out A high signal indicates paper-out error. 13 SLCT 28 Out Always at high level when the printer is powered on. 14 -AFXT 30 In Not used. 31 -INIT 30 In The falling edge of a negative pulse or a low signal on this line causes the printer to initialize. Minimum 50 us pulse is necessary. 32 -ERROR 29 Out A low signal indicates printer error condition. 36 -SLIN 30 In 18 Logic H - Out Pulled up to +5 V via 3.9 K ohm resistor. 35 +5V - Out Pulled up to +5 V via 3.3 K ohm resistor. Parallel I/F mode typical time of tack High speed 2us Normal speed 4usror Signal level : TTL compatible (IEEE-1284 level 1 device) Parameter Minimum Maximum VOH* - 5.5 V Condition is. VOL* -0.5 V - IOH* - 0.32 mA VOH = 2.4 V IOL* - 12 mA VOL = 0.4 V CO - 50 pF VIH - 2.0 V VIL 0.8V - IIH - 0.32 mA VIH = 2.0 V IIL - 12 mA VIL = 0.8 V CI - 50 pF PRODUCT DESCRIPTION * A low logic level on the Logic H signal is. 2.0 V or less when the printer is powered off and this signal is equal or exceeding 3.0V when the printer is powered on. The receiver shall provide an impedance equivalent to 7.5 K ohm to ground INTERFACE Functional description The strobe pulse. Read-in of data is performed at the falling edge of this pulse. The DATA0 through DATA7 signals represent data bits 0 to 7, respectively. Each signal is at high level when data is logical 1 and low level when data is logical 0. Not used. 14 Stylus C40UX/C40SX/C20UX/C20SX Revision B Pin No. Signal Name Return GND pin In/Out 17 Chassis GND - - Chassis GND. 16, 33 19-30 GND - - Signal GND. 15, 34 NC - - Not connected. Functional description * In/Out refers to the direction of signal flow from the printer's point of view. 1.4.3 Parallel Interface (Reverse Channel) Transmission mode : IEEE-1284 nibble mode Adaptable connector : See forward channel Synchronization : Refer to the IEEE-1284 specification Handshaking : Refer to the IEEE-1284 specification Data trans. timing : Refer to the IEEE-1284 specification Signal level : IEEE-1284 level 1 device See forward channel Connector pin assignment and signals : Pin No. 1 Signal Name HostClk ReturnG ND Pin 19 In/ Out* In Functional description Host clock signal. Pin No. Signal Name ReturnG ND Pin In/ Out* 2 DATA0 20 In 3 DATA1 21 In 4 DATA2 22 In 5 DATA3 23 In 6 DATA4 24 In 7 DATA5 25 In 8 DATA6 26 In 9 DATA7 27 In 10 PtrClk 28 Out Printer clock signal. 11 PtrBusy / DataBit-3,7 29 Out Printer busy signal and reverse channel transfer data bit 3 or 7. 12 AckDataReq / DataBit-2,6 28 Out Acknowledge data request signal and reverse channel transfer data bit 2 or 6. 13 Xflag / DataBit-1,5 28 Out X-flag signal and reverse channel transfer data bit 1 or 5. 14 HostBusy 30 In Host busy signal. 31 -INIT 30 In Not used. 32 -DataAvail / DataBit-0,4 29 Out 36 1284-Active 30 In 18 Logic-H - Out Pulled up to +5 V via 3.9 K ohm resistor. 35 +5V - Out Pulled up to +5 V via 3.3 K ohm resistor. 17 Chassis GND - - Chassis GND. 16, 33 19-30 GND - - Signal GND. 15, 34 NC - - Not connected. Functional description The DATA0 through DATA7 signals represent data bits 0 to 7, respectively. Each signal is at high level when data is logical 1 and low level when data is logical 0. These signals are used to transfer the 1284 extensibility request values to the printer. Data available signal and reverse channel transfer data bit 0 or 4. 1284 active signal. * In/Out refers to the direction of signal flow from the printer's point of view. PRODUCT DESCRIPTION INTERFACE 15 Stylus C40UX/C40SX/C20UX/C20SX Revision B Extensibility Request : The printer responds affirmatively when the extensibility request values are 00H or 04H, that mean, 00H : Request Nibble Mode Reverse Channel Transfer. 04H : Request Device ID; Return Data Using Nibble Mode Rev Channel Transfer. busy state. This slowdown is started when the rest of the input buffer becomes several hundreds of bytes. Finally, the printer is in the busy state continuously when the input buffer is full. Device ID : The printer sends following device ID string when it is requested. When IEEE1284.4 is enabled, [00H] [4EH] MFG:EPSON; CMD:ESCPL2,BDC,D4; MDL:Stylus[SP]XXX; CLS:PRINTER; DES:EPSON[SP]Stylus[SP]XXX; When IEEE1284.4 is disabled, [00H] [4BH] MFG:EPSON; CMD:ESCPL2,BDC; MDL:Stylus[SP]XXX; CLS:PRINTER; DES:EPSON[SP]Stylus[SP]XXX; *XXX is C20 or C40 Note : (1) [00H] denotes a hexadecimal value of zero. (2) MDL value depends on the EEPROM setting. Refer to Appendix F. (3) CMD value depends on the IEEE1284.4 setting, Refer to Appendix F. 1.4.4 Prevention Hosts from Data Transfer Time-out Generally, hosts abandon data transfer to peripherals when a peripheral is in the busy state for dozens of seconds continuously. To prevent hosts from this kind of time-out, the printer receives data very slowly, several bytes per minute, even if the printer is in PRODUCT DESCRIPTION INTERFACE 16 Stylus C40UX/C40SX/C20UX/C20SX Revision B 1.4.5 IEEE1284.4 Protocol The packet protocol described by IEEE1284.4 standard allows a device to carry on multiple exchanges or conversations which contain data and/or control information with another device at the same time across a single point-to-point link. The protocol is not, however, a device control language. It does provide basic transport-level flow control and multiplexing services. The multiplexed logical channels are independent of each other and blocking of one has no effect on the others. The protocol operate over IEEE1284. - Automatic selection An initial state is compatible interface and starts IEEE1284.4 communication when magic strings (IEEE 1284.4 synchronous commands) are received. - On An initial state is IEEE1284.4 communication and data that received it by the time it is able to take synchronization by magic string (IEEE 1284.4 synchronous commands) is discarded. - Off An initial state is compatible interface and never starts IEEE1284.4 communication even if magic strings (IEEE 1284.4 synchronous commands) are received. Factory setting is on.(Refer to Appendix H.EEPROM Map 09h) PRODUCT DESCRIPTION INTERFACE 17 Stylus C40UX/C40SX/C20UX/C20SX Revision B 1.5 OPERATOR CONTROLS 1.5.4 Printer Condition and Panel Status Indicators 1.5.1 Operate Switch Printer status Operate switch is located on the control panel. Power ON condition Powe Error Priority On - 10 1.5.2 Control Panel Ink sequence Blink - 6 Switches Ink Cartridge change mode Blink - 5 Data processing Blink - 9 Paper Out *1 - On 4 (1) Power (green) Lights when the operate switch is "ON", and AC power is supplied. Paper jam condition*1 - On 3 3 Ink end(Black)*1 - On->On 8 (2) Error (red) Lights or blinks when some error occurs to the printer. Ink level low(Black) - Blink->Blink 8 Ink end(Color)*1 - On->On 8 1.5.3 Panel Functions Ink level low(Color) - Blink->Blink 8 Panel Functions Ink end (Black and Color) - On->On 8 No Ink Cartridge (Black or Color)*1 - On 7 Alt blink Alt blink 2 Off On 1 There are 2 non-lock type push switches, and 2 LED. Indicators SW Error Reset SW Function • Loads or Ejects the Paper(Pushing within 3seconds). • Starts the Cleaning of head(Pushing for 3seconds) • When carriage is on the Ink Cartridge change position, return carriage from Ink Cartridge change position. • Starts the Ink Cartridge change (Pushing for 6seconds) *This function is not available in printing status. Error Reset SW PRODUCT DESCRIPTION Fatal error*1 “-”:Indicator status don’t change “a->b”:a is a Indicator condition when carriage is on Home Position. b is a Indicator condition in Ink exchange sequence. Panel Function with Power on SW Maintenance request (Ink Overflow Counter error) Function *1 : see Starts status printings OPERATOR CONTROLS 18 Stylus C40UX/C40SX/C20UX/C20SX Revision B 1.5.5 Printer Initialization 1.5.6 Errors There are three kinds of initialization method. Ink out (1) Power-on initialization This printer is initialized when turning the printer power on, or printer recognized the cold-reset command (remote RS command). When printer is initialized, following action is performed. (a) Initializes printer mechanism. (b) Clears input data buffer. (c) Clears print buffer. (d) Sets default values. Paper jam When printer fails to eject a sheet, it goes paper jam error. No ink-cartridge This printer is initialized when printer recognized the -INIT signal (negative pulse) of parallel interface. When printer is initialized, following action is performed. (3) Software initialization Paper out When printer fails to load a sheet, it goes paper out error. (2) Operator initialization (a) Cap the print head. (b) Eject a paper. (c) Clears input data buffer. (d) Clears print buffer. (e) Sets default values. When the printer runs out the most part of the ink of any one color, it warns inklow and keeps printing.When the printer runs out the whole ink of any one color, it stops printing and indicates ink-out error. User is requested to install a new inkcartridge in this state. When printer detects that ink-cartridge comes off , it goes this error mode. Maintenance request When the total quantity of ink wasted through the cleanings and flushing is reaches to the limit, printer indicates this error and stops. The absorber in the printer enclosure is needed to be replaced with new one by a service person. Fatal errors Carriage control error. * panel status is described on section1.4.4. The ESC @ command also initializes the printer. When printer is initialized, following action is performed. (a) Clears print buffer. (b) Sets default values. (4) Power-on initialization except I/F The printer recognized the IEEE 1284.4 “rs” command. When printer is initialized, following action is performed. (a) Initializes printer mechanism. (b) Clears input data buffer. (c) Clears print buffer. (d) Sets default values except I/F. PRODUCT DESCRIPTION OPERATOR CONTROLS 19 Stylus C40UX/C40SX/C20UX/C20SX Revision B 1.6 PAPER Quality 1.6.1 Paper Handling : #10,DL,C6 Bond paper, Plain paper, Air mail : CHOUKEI4,3 Kraft, new Kent paper : YOUKEI1,2,3,4 Kraft, new Kent paper * Envelope printing is only available at normal temperature. * Keep the longer side of the envelope horizontally at setting. Do not perform reverse feed more than 0 mm(0”). Exclusive paper 1.6.2 Paper Specification Quality Cut Sheet * Transparency printing is only available at normal temperature. Size Thickness Weight Quality : A4 (Width 210 mm(8.3") x Length 297 mm(11.7")) : Letter (Width 215.9 mm(8.5") x Length 279.4 mm(11.0")) : B5 (Width 182 mm(7.2") x Length 257 mm(10.1")) : Legal (Width 215.9 mm(8.5") x Length 355.6 mm(14.0")) : Half Letter (Width 139.7 mm(5.5") x Length 215.9 mm(8.5")) : Exclusive (Width 184.2 mm(7.5") x Length 266.7 mm(10")) : A5 (Width 148 mm(5.8") x Length 210 mm(8.3")) : A6 (Width 105 mm(4.1") x Length 210 mm(8.3")) : 0.08 mm(0.003") - 0.11 mm(0.004") : 64 g/m 2 (17 lb.55Kg) - 90 g/m 2 (24 lb.78Kg) : Exclusive paper, Bond paper, PPC < Photo Quality Ink Jet Paper > Size Thickness Weight Envelope Size Thickness Weight : No.10 Width 241 mm(9 1/2") x Length 104.8 mm(4 1/8") : DL Width 220 mm(8.7") x Length 110 mm(4.3") : C6 Width 162 mm(6.4”) x Length 114 mm(4.5”) : Envelope220*132 Width 220 mm(8.7”) x Length 132 mm(5.2”) : Japanese CHOUKEI 3 Width 120 mm x Length 235 mm * : Japanese CHOUKEI 4 Width 90 mm x Length 205 mm * : Japanese YOUKEI 1 Width 120 mm x Length 176 mm * : Japanese YOUKEI 2 Width 114 mm x Length 162 mm * : Japanese YOUKEI 3 Width 98 mm x Length 148 mm * : Japanese YOUKEI 4 Width 105 mm x Length 235 mm * * except for glue. : N/A :#10,DL,C6 45 g/m 2 (12 lb.) - 75 g/m 2 (20 lb.) : CHOUKEI 50 g/m 2 (43Kg) - 70 g/m 2 (60Kg) : YOUKEI 50 g/m 2 (43Kg) - 100 g/m 2 (86Kg) :A4 (210mm x 297mm) :A6 (105mm x 148mm) :B5 (182mm x 257mm) :Letter (216mm x 279mm) :Legal (216mm x 356mm) :5” x 8” (127mm x 203mm) :8” x 10” (203mm x 254mm) :Post Card (100mm x 148mm) : 0.13 mm(0.005") : 98 g/m 2 (26 lb.84Kg) <360 dpi Ink Jet Paper > Size Thickness Weight : A4 (210mm x 297mm) : Letter (216mm x 279mm) : 0.11 mm(0.004") : 89 g/m 2 (24 lb.78Kg) Size Thickness Weight : A4 (210mm x 297mm) : Letter (216mm x 279mm) : : Size Thickness Weight PRODUCT DESCRIPTION : EPSON Exclusive paper PAPER : A4 (210mm x 297mm) : Letter (216mm x 279mm) 0.13 mm(0.005") : N/A 20 Stylus C40UX/C40SX/C20UX/C20SX < Photo Quality Glossy Film > Size : A4 (210mm x 297mm) Revision B 1.6.3 Printing Area Cut Sheet : A6 (105mm x 148mm) : Letter (216mm x 279mm) Thickness : 0.13 mm(0.005") Weight : N/A Size : A4 (210mm x 297mm) : Letter (216mm x 279mm) Thickness : 0.23 mm(0.009") Weight : 167 g/m 2 (44 lb.143Kg) < Iron-on Cool Peel Transfer Paper > Size Thickness Weight : A4 (210mm x 297mm) : Letter (216mm x 279mm) : 0.18 mm(0.007") : 124 g/m 2 (33 lb.107Kg) *Base paper weight. Size Thickness Weight : A4 (210mm x 297mm) : 0.11 mm(0.004") : 80 g/m 2 (21 lb.45Kg) PRODUCT DESCRIPTION Figure 1-4. Printable Area for Cut Sheet PAPER 21 Stylus C40UX/C40SX/C20UX/C20SX Revision B Envelope Raster Graphics mode PW (Paper width) (typ.) PL (Paper length) (typ.) A4 210mm (8.3”) 297mm (11.7”) 3mm 3mm 3mm 14mm (0.54”) (0.12”) (0.12”) (0.12”) /3mm (0.12”) 21mm (0.83”) /3mm (0.12”) Letter 216mm (8.5”) 279mm (11.0”) 3mm 3mm 3mm 14mm (0.54”) (0.12”) (0.12”) (0.12”) /3mm (0.12”) 21mm (0.83”) /3mm (0.12”) B5 182mm (7.2”) 257mm (10.1”) 3mm 3mm 3mm 14mm (0.54”) (0.12”) (0.12”) (0.12”) /3mm (0.12”) 21mm (0.83”) /3mm (0.12”) Lega 216mm (8.5”) 356mm (14.0”) 3mm 3mm 3mm 14mm (0.54”) (0.12”) (0.12”) (0.12”) /3mm (0.12”) 21mm (0.83”) /3mm (0.12”) Statement 139.7mm 215.9mm 3mm 3mm 3mm 14mm (0.54”) (5.5”) (8.5”) (0.12”) (0.12”) (0.12”) /3mm (0.12”) 21mm (0.83”) /3mm (0.12”) Executive 190.5mm 254mm (7.5”) (10”) 21mm (0.83”) /3mm (0.12”) Paper size LM (left margin) (min.) RM (Right margin) (min.) TM (Top margin) (min.) Black BM (Bottom margin) (min.) 3mm 3mm 3mm 14mm (0.54”) (0.12”) (0.12”) (0.12”) /3mm (0.12”) Color BM (Bottom margin) (min.) Figure 1-5. Printable Area for Envelopes * Bottom margin is expanded to 3mm when paper dimension is defined by using command(ESC (S), otherwise it is not expanded (Black,14mm Color 21mm). Refer to Appendix C. Paper size ** Print quality may decline in the expanded areas(For 3 mm to 14 mm (Color 21mm) of the printing areas). #10 28mm(1.10 ”) 3mm(0.12”) 3mm(0.12”) 14mm(0.54”0 /3mm(0.12”)* 21mm(0.83”) /3mm(0.12”)* DL 7mm(0.28”) 3mm(0.12”) 3mm(0.12”) 14mm(0.54”0 /3mm(0.12”)* 21mm(0.83”) /3mm(0.12”)* C6 3mm(0.12”) 3mm(0.12”) 3mm(0.12”) 14mm(0.54”0 /3mm(0.12”)* 21mm(0.83”) /3mm(0.12”)* LM(Left margin) (min.) RM(Right margin) (min.) TM(Top margin) (min.) Black BM (Bottom margin) (min.) Color BM (Bottom margin) (min.) * Bottom margin is expanded to 3mm when paper dimension is defined by using command ESC (S), otherwise it is not expanded (Black,14mm Color 21mm). Refer to Appendix C. ** Print quality may decline in the expanded areas(For 3 mm to 14 mm (Color 21mm) of the printing areas). PRODUCT DESCRIPTION PAPER 22 Stylus C40UX/C40SX/C20UX/C20SX Revision B 1.7 INK CARTRIDGE 1.7.1 Black Ink Cartridge Type : Exclusive cartridge Color : Black Print capacity : 270 pages / A4 (ISO/IEC10561 Letter Pattern at 360 dpi) Ink life : 2 years from production date Storage temperature : -20°C - 40°C (Storage, within a month at 40°C) : -30°C - 40°C (Packing storage, within a month at 40°C) : -30°C - 60°C (Transit, within 120 hours at 60°C and within a month at 40) Dimension : 19.8 mm(W) x 52.7 mm(D) x 38.5 mm(H) 1.7.2 Color Ink Cartridge Type : Exclusive cartridge Color : Magenta, Cyan, Yellow Print capacity : 150 pages /A4 (360 dpi, 5% duty each color) Ink life : 2 years from production date Ink cartridge (color) Ink cartridge (black) * Ink cartridge can not re-fill, only ink cartridge is prepared for article of consumption. * Do not use the ink cartridge which was passed away the ink life. Storage temperature : -20°C - 40°C (Storage, within a month at 40°C) : -30°C - 40°C (Packing storage, within a month at 40°C) * Ink will be frozen under -18 to -21 o C environment, however it will be usable after placing it more than 3 hours at room temperature. mm (0.12”) * : -30°C - 60°C (Transit, within 120 hours at 60°C and within a month at 40) Dimension : 42.9 mm(W) x 52.7 mm(D) x 38.5 mm(H) PRODUCT DESCRIPTION INK CARTRIDGE 23 CHAPTER 2 OPERATING PRINCIPLES Stylus C40UX/C40SX/C20UX/C20SX Revision B 2.1 Overview Paper Eject Roller This section describes the operating principles of the printer mechanism and electrical circuit boards. The Stylus C40UX/C40SX/C20UX/C20SX has only the following two circuit boards: Main board: C413 MAIN/MAIN-B Power supply board: C417 PSB/PSE PF Motor PF Roller Star Wheel Roller 2.1.1 Printer Mechanism CR Timing belt CR unit The printer mechanism for Stylus C40UX/C40SX/C20UX/C20SX is designed newly. But, the basic component of the printer mechanism is same as previous product. This printer consists of Print Head, Carriage Mechanism, Paper Feeding Mechanism, Paper Loading Mechanism, Ink System (Pump Mechanism, Cap Mechanism, and Carriage Lock Mechanism). HP/PE/IC Sensor sensor LD Roller Paper feed back plate Like other EPSON ink jet printers, the Stylus C40UX/C40SX/C20UX/C20SX is equipped with two stepping motors; one for ASF, Paper feeding/ Pump mechanism, and one for CR mechanism. ASF unit uses rear entry front eject system. This ASF unit is also designed newly and single LD roller loads the paper to the printer mechanism. Paper separation pad ASF Hopper Spring For cap assembly, Stylus C40UX/C40SX/C20UX/C20SX uses valveless mechanism; new design for this model. Clutch mechanism Pump unit CR Motor Cap Assembly Figure 2-1. Printer Mechanism block diagram Operating Principles Overview 25 Stylus C40UX/C40SX/C20UX/C20SX Revision B 2.1.2 Printhead Head Driver Board The printhead uses a new developed U-CHIPS head and Stylus C40UX/C40SX/ C20UX/C20SX can perform multiple shot printing and variable printing. Printhead nozzle configuration is as follows. Ink Cartridge 48 nozzles x 1 row: Black (nozzle pitch of the row: 1/120 inch) Needle 45 nozzles x 1 row: Color (nozzle pitch of the row: 1/120 inch) In the one row for the color, 15 nozzles are assigned for each yellow, magenta, cyan color) The basic operating principles of the printhead, which plays a major role in printing, are the same as previous models; on-demand method which uses PZT (Piezo Electric Element). In order to uniform the amount of ejecting ink, the printhead has its own head ID (6 digits for this printhead) which adjust PZT voltage drive features. The printer read the head ID form EEPROM and generates appropriate PZT drive voltage to prevent amount of ink from varying by printheads. Filter Nozzle Plate Following explains printhead basic components. PZT PZT Cavity Figure 2-2. Printhead Sectional Drawing PZT is an abbreviation of Piezo Electric Element. Certain amount of voltage expands and contracts PTZ. The drive wave generated on MAIN board drives PZT and PZT pushes the top cavity which has ink stored to discharge the ink from each nozzle on the nozzle plate. Ink Cavity The ink absorbed from the ink cartridge goes through the filter and then is stored temporarily in this tank called “cavity” until PZT is driven. Nozzle Plate The board with nozzle holes on the printhead surface is called Nozzle Plate. Filter When the ink cartridge is installed, if any dirt or dust around the cartridge needle is absorbed into the head, there is a great possibility of causing nozzle clog and disturbance of ink flow, and finally causing alignment failure and dot missing. To prevent this problem, a filter is set below the cartridge needle, where ink is filtered. Operating Principles Overview 26 Stylus C40UX/C40SX/C20UX/C20SX Revision B 2.1.2.1 Printing Process 2.1.2.2 Printing Method This section explains the process in which the printheads of On-Demand inkjet printers eject ink from each nozzle. For print dot system, Stylus C40UX/C40SX/C20UX/C20SX has the following two kinds of printing modes. 1. Normal State: When no printing signal is sent from PC, or no PZT drive voltage is applied, PZT does not change shape, therefore PZT does not squeeze the cavity. Ink pressure inside the cavity is kept normal. (Refer to Figure 2-3.) 2) Ejecting State: When the print signal is output from the C413MAIN/B board, IC (Nozzle Selector) located on the printhead unit latches data once by 1-byte unit. An appropriate PZT latched by the nozzle selector is pushed into the cavity by the common voltage applied from the main board. By this operation, ink stored in the cavity spurts out from nozzles.(Refer to Figure 2.1.2.2.) Ink Path PZT Nozzle Ink Cavity Multiple shot printing Variable dot printing The above two printing modes are automatically selected depending on the media and the resolution setting of the printer driver. The following explains each printing mode. Multiple shot printing This printing mode is developed to improve the print quality on plain paper or transparencies in low resolution. The multiple shot printing mode uses normal dot and the number of dot shots varies from 1 shot to maximum 4 shots depending on the print data to enable sharp image output even in a low resolution. Variable dot printing This printing mode is developed to improve the print quality on exclusive paper. This mode is basically the same as variable dot printing mode used on other products /; micro dot, middle dot, and large dot compose this mode. Print dot size varies according to print data and this mode enables even sharper image output on exclusive paper. Nozzle plate PZT drive voltage Figure 2-3. Printhead printing process Operating Principles Overview 27 Stylus C40UX/C40SX/C20UX/C20SX Revision B 2.1.3 Carriage Mechanism The carriage mechanism consists of Carriage motor (CR motor), Carriage unit (including printhead), CR timing belt, CR guide shaft, CR guide frame, CR home & I/C detector (HP/PE/IC sensor) etc. The carriage mechanism moves the carriage back and forth according to the drive from the carriage motor. The following stepping motor is mounted to drive CR mechanism. (See the table below.) CR home position is detected with the HP/PE/IC sensor and the detection plate molded in the CR unit as following figure. When the CR home position is detected with this sensor, HIGH signal is output to the CPU. Right side view HP/IC detection Lever CR HP detection plate HP/IC detection Lever Table 2-1. Carriage Motor Specification Items Specifications Type 4-Phase/ 48-Pole PM Stepping motor Drive Voltage +42 V +/ - 5% (DRV IC voltage) Coil Resistance 10.8 Ω +/ - 10% (per phase at 25 degree) Inductance 15 mH +/ - 20%(1KH 1VmA) Drive Method Bi-Polar drive Driver IC XC901503FNR2 CR HP detection plate Figure 2-5. CR home position The drive from CR motor is transferred to the CR unit via CR timing belt. And the CR home position is detected with the HP/PE/IC sensor. This sensor is available as CR HP detector only in the HP (home position) detection sequence & pump operation sequence. (not available in the paper feeding sequence for the CR HP detector because it is used for only PE sensor during the paper feeding sequence.) Moreover, unlike the previous products, this printer dose not have the PG adjustment mechanism. HP/PE/ICSensor High signal Low signal Unlike the previous products, I/C detection sensor is not built in the CR unit. The I/C is detected with the HP/PE/IC sensor and the detection plate molded on the I/C cover as following figure. The I/C installation condition is monitored only when the CR unit moves to the I/C detection position (HP detection sequence). So, this sensor function is not available in the paper feeding sequence. When the I/C is not installed into the CR unit, HIGH signal is output to the CPU. HP/IC detection Lever Right side view I/C detection plate HP/IC detection Lever CR Motor High signal Low signal I/C detection plate Figure 2-6. I/C detection position CR unit CR Timing belt Figure 2-4. Carriage Mechanism (Top view) Operating Principles Overview 28 Stylus C40UX/C40SX/C20UX/C20SX Revision B Also, when replacing ink use this lever to confirm whether the cover cartridge is open or closed. There are separate replacement positions for replacing the Black and Color ink cartridges. If the cover cartridge is open, the I/C detection plate makes contact with the HP/IC detection lever, causing the HP/IC sensor to detect a high signal. HP/IC detection Lever Right side view I/C detection plate HP/IC detection Lever High signal Low signal I/C detection plate Figure 2-7. I/C change position If a High signal is detected even once, it is regarded as if that ink cartridge was replaced and the cleaning and ink counters are cleared. If the High signal is not detected even once, the cleaning and ink counter are not cleared. If both the ink cartridges have not been set before carrying out initial filling, the carriage moves to the position where both ink cartridges can be set, but checking if the cartridge is open or closed is not done. If one of the ink cartridges has not been set, the carriage moves to the replacement position of the ink cartridge that is not set due to one time prevention of the set ink cartridge. Operating Principles Overview 29 Stylus C40UX/C40SX/C20UX/C20SX Revision B 2.1.4 Paper Feeding Mechanism Table 2-2. PF Motor Specifications The paper feeding mechanism consists of Paper feed motor (PF motor), PF roller, Paper eject roller, Star wheel roller, and so on. The paper feeding mechanism feeds paper loaded from ASF using the PF roller and Paper Eject Roller & Star wheel roller. For this mechanism, the PF motor mentioned in the right Table 2-2 is used on this product. Item Description Motor type 4-Phase/ 48-Pole PM Stepping motor Drive voltage +42 V +/ - 5% (DRV IC voltage) Coil Resistance 10 Ω +/ - 10% (per phase) The drive of the PF motor is transfer to the PF roller and the Paper Eject Roller as following Figure 2-8. Following shows you how to transfer the PF motor drive to the PF roller and the Paper Eject Roller. Inductance 10.5 mH +/ - 20%(1kH 1Vrms) Driving method Bi-Polar drive PF motor drive transmission path Driver IC XC901503FNR2 PF Motor Pinion Gear (CW) → Spur Gear 60 (PF roller)(CCW) → Spur Gear 60 (PF roller)(CCW) Spur Gear 35.2 Change Lever Combination Gear 16, 32 PF roller Spur Gear 10. 8 Spur Gear 25.6 Spur Gear 18. 28 Spur Gear 27. 2 Figure 2-8. Paper Feeding Mechanism Paper loaded from ASF is advanced by the following roller. Paper feed roller & Paper guide roller (assembled on the Top Frame) → Paper eject roller & Star wheel roller (assembled on the Paper eject frame). Operating Principles Overview 30 Stylus C40UX/C40SX/C20UX/C20SX Revision B Additionally, the top & end of the paper is detected with the HP/PE/IC sensor. In case the PE sensor dose not detect the paper in the paper loading sequence, the printer detects the “Paper out error”. If the paper is detected after complete the paper eject sequence, the printer detects the “Paper jam error”. Drive sent from the PF motor is always transmitted to the ASF unit side. But, the Change lever and the Clutch mechanism switch ON/OFF the PF motor drive to the LD roller with the motor rotational direction. Drive from the PF motor is transmitted to the ASF unit as described below: 2.1.5 Paper Loading Mechanism (ASF Unit) Switch the PF motor drive to ASF unit side PF Motor Pinion Gear (CCW) → Spur Gear 60 (PF Roller) (CW) → Spur Gear 10.8 (CW) → Combination Gear18, 28 (CCW) → Spur Gear 27.2 (CW) → Spur Gear 25.6 (CCW) → Change Laver Rotates (CCW) → Release the Clutch mechanism The Paper loading mechanism is positioned at the printer rear. The Paper loading mechanism loads paper at the ASF unit and feeds paper to the PF roller. This ASF unit was designed newly for this product and consists of LD roller, Pad holder (Paper return plate), ASF Frame, Hopper, and so on. For the major feature of this ASF unit, ASF HP sensor is not used and the single LD roller is built in the ASF unit. lock position Following Figure 2-9 shows you the switching path for PF motor drive to ASF unit side. Spur Gear 35. 2 Combination Gear 35. 2 Change Lever Spur Gear 10. 8 Spur Gear 25. 6 Combination Gear 18, 28 Spur Gear 27. 2 Figure 2-9. Switch the PF motor drive to ASF unit side Operating Principles Overview 31 Stylus C40UX/C40SX/C20UX/C20SX Revision B Transfer the PF motor drive to LD roller PF Motor Pinion Gear (CW) → Spur Gear 60 (PF Roller) (CCW) → Spur Gear 10.8 (CCW) → Combination Gear 18, 28 (CW) → Spur Gear 27.2 (CCW) → Spur Gear 25.6 (CW) → Change Laver rotates (CW) → Combination Gear 16, 32 (CCW) → Spur Gear 35.2 (CW) (include the clutch mechanism) → LD Roller (CW) Following Figure 2-9 shows the PF motor drive transmission path to the LD roller unit built in the ASF unit. The LD roller is assembled on the same shaft that the Spur gear 35.2 is assembled. Change Lever Spur Gear 35. 2 Combination Gear 35. 2 Spur Gear 25. 6 Spur Gear 10, 8 Combination Gear 18, 28 Spur Gear 27. 2 Figure 2-10. PF motor drive transmission path When the PF motor torque is switched to the ASF unit side by the clutch mechanism, the function of the ASF mechanism varies depending on the rotational direction of the PF motor, as shown in the table below. Table 2-3. ASF unit function & PF Motor rotational direction Directions Clutch Mechanism Unlike the previous products, this product dose not have a ASF HP sensor. Instead of the ASF HP sensor, Change lever and the Clutch mechanism are used to detect the ASF home position. Following figures describe the mechanism. Corresponding Functions Clockwise (*1) • Picks up and loads paper Counterclockwise (*1) • Release the DE lever & Clutch mechanism (*1): The PF Motor rotational direction = seen from the right side of the printer. Operating Principles Overview 32 Stylus C40UX/C40SX/C20UX/C20SX NOTE: Revision B Step1 Spur gear 35.2 Step2 Clutch gear Change Lever Step3 Tension spring 0.143 LD roller shaft The Clutch gear is molded on the back side of the Spur gear 35.2 such as Combination gear. Clutch Clutch lever Clutch lock tooth Figure 2-11. Disengage & Clutch mechanism The Clutch mechanism transmits the PF motor drive to the LD roller shaft only when the Clutch gear rotates CW direction after the Change lever releases the Clutch lever. If the Clutch gear rotates CCW direction, the PF motor drive is not transmitted to the LD roller. This is due to the combination of the shape of the Clutch gear and the Clutch lock tooth such as described on the figure. 1. 2. 3. 4. Paper Return Plate (Pad holder) Unlike the previous products, The Paper return plate is built in the ASF frame instead of the Paper return lever. The Paper separation pad is also stacked on the plate. It works with the spring force of the Torsion spring 26 (mounted in the ASF frame) as following figure. When the paper is advanced with the PF roller, the Change lever is set on the Clutch lever and the Clutch is pushed down as above Step1’s figure. As the result, the Clutch gear (*1) is released from the Cluck lock tooth and the drive from the PF motor is not transmitted to the LD roller shaft. LD roller Paper Return Plate When the PF pinion gear rotates CCW direction in the above Step2’s figure, the Change lever moves to the left direction with the CCW rotation of Spur gear 25.6. The Clutch turns back to the engagement position by the tension force of the Tension spring 0.143 and the Clutch gear is engaged with the Clutch lock tooth as above Step2’s center figure. When the PF pinion gear rotates CW direction in the above Step3’s figure, the Change lever moves to the right direction with the CW rotation of the Spur gear 25.6. And the drive from the PF motor is transmitted to the LD roller shaft via Clutch gear and Clutch lock tooth. ASF frame Torsion spring 26 Compression spring 2.11 Figure 2-12. Paper Return Plate The Paper return plate is set to return the paper to the paper stand-by position in the ASF unit when the ASF unit is in the standby mode. When the paper is fed with the LD roller, the Paper return plate is stored in the ASF frame by the LD roller. The LD roller shaft rotates about 360 degree and the Change lever push the Clutch lever and the PF motor drive is interrupted. This position is the ASF home position. Operating Principles Hopper Following figures show you the ASF paper loading sequence and the operation of the each mechanism. Overview 33 Stylus C40UX/C40SX/C20UX/C20SX Revision B Step 1 Step 2 Hopper LD roller LD roller shaft When the paper is advanced with the PF roller, Change lever push down the Clutch lever as right figure and the Clutch lock tooth is disengaged from the Clutch gear. As the result, the drive from the PF motor is interrupted and the LD roller dose not rotate. This position is the ASF home position. The Paper return plate is set to avoid that the paper is slipped down from the paper set position. Paper return plate Change lever Tension spring 0.143 Clutch lock tooth Clutch Clutch lever PF roller CCW rotation The PF motor pinion gear rotates CW direction and the drive from the PF motor is transmitted to the ASF LD roller shaft through the Clutch lock tooth and the Clutch gear. The ASF hopper release lever rotates with the ASF LD roller and release the ASF Hopper. The ASF hopper is pushed with the Compression spring 2.11 and the paper is picked up with the ASF LD roller. Printer front side Clutch gear PF roller CW rotation Step 3 Step 4 Compression spring 2.11 ASF Hopper release lever ASF Frame Paper return plate LD roller shaft PF roller CCW rotation When the paper is loaded (pick up) from the ASF unit, the Change lever moves to the printer front side with the CCW rotation of the PF motor pinion gear and releases the Clutch lever. As the result, the Clutch turns back to the engagement position by the tension force of the Tension spring 0.143. And the Clutch lock tooth is engaged with the Clutch gear as right figure. ASF hopper release lever The ASF LD roller rotates CW direction moreover and the Paper return plate is stored under the ASF frame. The paper is advanced up to the PF roller. and the ASF LD roller & the clutch rotate to the “Step1” position. The Clutch lever is locked with the Change lever. The drive from the PF motor is interrupted and the drive is transmitted to the PF roller side. PF roller CCW rotation Figure 2-13. ASF Paper Loading Sequence Operating Principles Overview 34 Stylus C40UX/C40SX/C20UX/C20SX Revision B 2.1.6 Ink System Mechanism Table 2-4. PF motor rotational direction & Ink System Mechanism Directions Ink system mechanism consists of pump unit (include the CR lock lever) and capping mechanism. Ink system mechanism drives the pump unit that presses cap to the printhead and ejects ink from ink cartridge, head cavity and cap to the waste ink pad. Functions Counterclockwise (*1) • Absorbs ink by the pump unit • Set the CR lock lever 2.1.6.1 Pump Unit & Wiper mechanism (*1): The PF Motor rotational direction = seen from the right side of the printer. The pump unit is driven by PF motor. PF motor drive is always transmitted to the paper feeding mechanism and pump unit through the following gears. Refer to the Figure 2-15. Following figure shows the overview of the pump mechanism operation. PF Motor Pinion Gear (CCW) → Spur Gear 60 (PF Roller)(CW) → Spur Gear 10.8(CW) → Combination Gear 18, 28 (CCW) → Spur Gear 27.2 (CW)(Pump unit) Figure 2-14. Pump mechanism Pump unit Spur Gear 10. 8 Cap unit Pump unit Combination Gear 18, 28 Spur Gear 27. 2 Figure 2-15. PF motor drive transmission path to the Pump unit Operating Principles Overview 35 Stylus C40UX/C40SX/C20UX/C20SX Revision B 2.1.6.2 Capping Mechanism The capping mechanism covers the printheads with the cap holder to prevent the nozzle from increasing viscosity when the printer is in stand-by mode or when the printer is off. This product has valveless cap system. Air valve function used for the previous models pumps and ejects ink only inside the cap by absorbing ink with the valve open. By opening the Air valve, the negative pressure is decreased and only the ink inside the cap is ejected. (the ink is not absorbed from Ink cartridge or head cavity.) But, valveless cap system, this operation is done out side of the capping area. The CR moves to left side of the Cap assembly and the pump absorbs the ink inside the cap. 3. If the carriage moves to the left side, spring forces tends to force the cap back to its original position, but it stops at the wiping position due to the lever lock slider. (Refer to Figure 2-17. Wiping Position) 4. When the carriage moves to the left side, the head surface and wiper makes contact and wiping is performed. (Refer to Figure 2-17. Wiping Position) 5. Even when wiping is completed, the carriage moves further to the left side and when the hook on the carriage’s right side hits the lever lock slider lever, the lever lock slider’s hook is released. (Refer to Figure 2-17. Wiper Set Release) Carriage unit Print head Viewed from front side CR unit The carriage pushes the lever. Slider cap Right side from capping position Printhead Wiper Hook Figure 2-17. Wiper Set Position Cap Waste Ink tube Print head Figure 2-17. Wiping Position Carriage unit Hook Slide up The hook is released. Figure 2-16. Cap Mechanism Also, unlike previous models, the cap unit is newly designed for this model as follows. 2.1.6.2.1 Wiper with the cap unit Wiper Print head Wiping control is carried out by the procedure shown below. 1. The carriage is moved to the wiper set position. (Refer to Figure 2-17. Wiper Set Position) 2. When the carriage moves to the wiper set position, the hook on the lever lock slider engages, locking the lever lock slider. (Refer to Figure 2-17. Wiper Set Position) Operating Principles Overview Figure 2-17. Wiping Figure 2-17. Wiper Release 36 Stylus C40UX/C40SX/C20UX/C20SX Revision B 2.1.6.2.2 Non porous pad in cap Due to this, the cap is newly designed as follows. Stylus COLOR 480 Stylus C40/C20 seal rubber porous pad ink eject hole Figure 2-18. non porous pad in cap (Stylus C40/C20) The cap unit used for the previous models has the porous pad to keep the moisture in the cap and prevent that the air bubble occurs in CL sequence. To get the same effects on new cap unit without the porous pad. For keep the moisture in the cap The diameter of the ink eject hole is smaller than that of Stylus COLOR 480 For prevent that the air bubble occurs in CL sequence The cap is modified so that ink flows to ink eject hole with air bubble in CL sequence. Operating Principles Overview 37 Stylus C40UX/C40SX/C20UX/C20SX Revision B CL2 2.1.7 Ink Sequence Initial ink charge After the product is purchased and the printer is turned on for the first time, the printer must be performed the initial ink charge and charges ink inside the head cavity. When the initial ink charge is completed properly, the printer releases the flag inside the EEPROM and no initial ink charge will be performed next time the power is turned on. Stylus C40UX/C40SX/C20UX/C20SX takes 70 seconds to complete the initial ink charge sequence and consume about 1/4 of the brand-new black ink cartridge. If the power is turned off during initial filling, CL1 is performed when the power is turned on the next time. Manual Cleaning Stylus C40UX/C40SX/C20UX/C20SX provides three type of manual cleaning to clean air bubbled or clogged ink with viscosity or foreign substances. The following manual CL sequences can be executed by the utility included in the printer driver. CL1 - Ink absorption Black Ink: 0.3g, Color Ink: 0.3g -Wiping operation Wipes nozzle plate by the rubber part on the right half of the wiper. -Flashing operation Prevents color from mixing. Stabilizes ink surface inside the nozzle. The above mentioned manual CL is executed by performing nozzle check pattern and manual CL alternately. The cleaning order is CL1→ CL2→ CL1→ CL1’→ CL1. Like the previous products, CL1 is selected automatically and performed in case any print check is not executed between each manual CL. Additionally, if the manual CL is performed with over 5 pages printing cycle, CL1 is always selected and performed. Additionally, if either black or color I/C is ink low or end condition, any manual cleaning is prohibited and it is displayed on the LED indicators. - Ink absorption Black Ink: 0.175g, Color Ink: 0.175g Timer Cleaning -Wiping operation Wipes nozzle plate by the rubber part on the right half of the wiper. Unlike the previous product, this printer dose not have Timer IC and Lithium battery which is used for the backup power source for Timer IC. So, this printer manages the printer off period or cleaning cycle by using the following method. -Flashing operation Prevents color from mixing. Stabilizes ink surface inside the nozzle. CL1’ - Ink absorption Black Ink: 1.02g, Color Ink: 1.02g -Wiping operation Wipes nozzle plate by the rubber part on the right half of the wiper. -Flashing operation Prevents color from mixing. Stabilizes ink surface inside the nozzle. Operating Principles The timer command is sent to the printer by the printer driver before printing. The timer command s generated based on the PC’s timer and is configured from the year, month, day, hour, minute and second. When the printer receives the timer command, it generates data which include the month, day and time and stores it at addresses 04 and 05 in the EEPROM. The printer compares the values stored in addresses 02 and 03 with the values stored in addresses 04 and 05 of the EEPROM, and if the compared value is greater than the specified time, timer cleaning is performed automatically. The printer writes the values in EEPROM addresses 02 and 03 in addresses 04 and 05 when cleaning (timer cleaning, manual cleaning, ink cartridge replacement cleaning, etc.) is performed. A maximum of 0.48 g of ink is consumed (0.24 g each for the single color and color ink cartridges) during timer cleaning. Overview 38 Stylus C40UX/C40SX/C20UX/C20SX Revision B Flashing This printer performs the following two kinds of the Flashing for the following purpose. Periodical Flashing This is due to avoid the increment of both ink’s viscosity in the printhead nozzle during the continuous printing and the specific small amount of the ink is ejected in the cap based on the periodical flashing timer. Periodical large amount Flashing This is due to avoid the increment of black ink’s viscosity in the printhead nozzle during the continuous printing and large amount of the ink is ejected in the cap based on the periodical large mount flashing timer. Operating Principles Overview 39 Stylus C40UX/C40SX/C20UX/C20SX Revision B 2.1.8 Printing mode Table 2-6. Printing mode for Black mode The print resolution and printing method are determined automatically by setting the media type and print quality (It is able to set by slider bar) in the printer driver as following table. Following table show you the detail setting in the “Auto” mode. Slide bar Resolution Print mode High Speed*1 Micro weave Dot size*2 Speed 120 x 120 Economy ON OFF ND-3dot Default 240 x 240 Normal 240 ON ON MSD1 Quality 360 x 360 Fine 360 ON ON MSD2 N/A 360 x 360 Normal 360 OFF ON MSD2 Default 360 x 360 Fine 360 ON ON MSD2 Quality 720 x 720 Photo 720 ON ON VSD 6pl Default 360 x 360 Fine 360 ON ON MSD2 Quality 720 x 720 Photo 720 ON ON VSD 6pl Default 360 x 360 Fine 360 ON ON MSD2 Quality 720 x 720 Photo 720 ON ON VSD 6pl Photo Quality Glossy Film N/A 720 x 720 Photo 720 OFF ON VSD 6pl Ink Jet transparencies N/A 360 x 360 Normal 360 OFF ON MSD2 Print media Table 2-5. Printing mode for Color mode Print media Plain paper 360 dpi Ink jet paper Plain paper Slide bar Resolution Print mode High Speed*1 Micro weave Dot size*2 Speed 120 x 120 Economy ON OFF ND-3dot Default 360 x 360 Normal 360 ON ON MSD2 Quality 720 x 720 Photo 720 ON ON VSD 6pl N/A 360 x 360 Normal 360 OFF ON MSD2 Default 360 x 360 Fine 360 ON ON MSD2 Quality 720 x 720 Photo 720 ON ON VSD 6pl 360 dpi Ink jet paper Photo Quality ink jet paper Matte PaperHeavyweight Photo Quality ink jet paper Default 360 x 360 Fine 360 ON ON MSD2 Quality 720 x 720 Photo 720 ON ON VSD 6pl Default 360 x 360 Fine 360 ON ON MSD2 Quality 720 x 720 Photo 720 ON ON VSD 6pl Photo Quality Glossy Film N/A 720 x 720 Photo 720 OFF ON VSD 6pl Ink Jet transparencies N/A 360 x 360 Normal 360 OFF ON MSD2 Photo paper Matte PaperHeavyweight Photo paper NOTE: *1: High speed means Bi-directional printing. *2: ND means Normal dot. MS means Multi Shot Dot. VSD means Variable Shot dot. NOTE: *1: High speed means Bi-directional printing. *2: ND means Normal dot. MS means Multi Shot Dot. VSD means Variable Shot dot. Operating Principles Overview 40 Stylus C40UX/C40SX/C20UX/C20SX Revision B 2.2 Electrical Circuit Operating Principles The electric circuit of the Stylus C40UX/C40SX/C20UX/C20SX consists of the following boards. Main board: C413 MAIN (USB) C413 MAIN-B (Parallel) Power supply board: C417 PSB/PSE Board 2.2.1 C417 PSB/PSE board The power supply boards of Stylus C40UX/C40SX/C20UX/C20SX use a RCC (Ringing Chalk Converter) circuit, which generates +36VDC for drive line and +5VDC for logic line to drive the printer. The application of the output voltage is described below. Table 2-7. Application of the DC Voltages Voltage NOTE: The C413MAIN/-B board is used for the product in the first mass production and it will be changed to C413MAIN-C/-D board at an early date. The major difference is that a single chip which integrates the ASIC, CPU and PROM is used on the C413MAIN-C/-D board. C413 MAIN-C (USB) C413 MAIN-B (Parallel) This section provides operating principles of C413 MAIN/B Board and C417 PSB/PSE Board. Refer to Figure 2-19 for the major connection of the each boards and their roles. +36VDC Application • Motors (CR Motor, PF Motor) • Printhead common voltage • Printhead nozzle selector 36V drive voltage AC voltage input from AC inlet first goes through filter circuit that removes high frequency components and is then converted to DC voltage via the rectifier circuit and the smoothing circuit. DC voltage is then lead to the switching circuit and FET Q1 preforms the switching operation. By the switching operation of the primary circuit, +36VDC is generated and stabilized at the secondary circuit. Printer Mechanism C413 MAIN-A/B Board CR Motor PF Motor +5VDC Print Head HP/PE/IC Sensor +36VDC C417 PSB/PSE Board Figure 2-19. Electric Circuit Operating Principles Electrical Circuit Operating Principles 41 Stylus C40UX/C40SX/C20UX/C20SX +36VDC Revision B The C417 PSB/PSE board has the various control circuits to stop voltage output if a malfunction occurs on the power supply board or the main board while the printer mechanism is on duty. Following explains each control and protection circuit. +5VDC ZD53 +36V line constant voltage control circuit: +5VDC line over voltage limitation +36VDC over current protection The output level of +36V line is monitored by a R92, R93,Q91,ZD51. When + 36V line reaches about 36.4V, ZD51 has a continuity with and PC1 start the operation via Q91. Consequently, Q1 switching operation is controlled by this circuit to stabilize the 36V line. F51 ZD52,87 +36Vline over voltage protection circuit: +36VDC line over voltage limitation The output voltage line is monitored by ZD52,ZD87. If the output level of the voltage level of +36DC line exceeds +48V, this circuit stops the operation of the switching FET Q1 via PC1,Q82,Q83 and prevents high voltage from applied to the secondary side ZD51,R92,93,Q91 +36VDC Line Constant Control +36Vline over current protection circuit: The output voltage is monitored by the F51. When the abnormal current is detected by F51, F51 is fused and cut off the +36V line output to the Main board C51 Smoothing Circuit PC1 Photo Coupler TRANS(T1) Smoothing Circuit Over Current Protection Main Switching Filter Circuit +5V line over voltage protection circuit: The output voltage level of the +5V line is monitored by ZD53. If the output level of the voltage level of +5DC line exceeds +7V, this circuit stops the operation of the switching FET Q1 via PC1,Q82,Q83and prevents high voltage from applied to the secondary side. Feed back circuit Full Wave rectifier circuit Figure 2-20. C417 PSB/PSE Board Block Diagram Operating Principles Electrical Circuit Operating Principles 42 Stylus C40UX/C40SX/C20UX/C20SX Revision B 2.2.2 C413 MAIN/B Board 2.2.2.1 Main elements The printer mechanism is controlled by C413MAIN. On this MAIN board, 3.3V regulator IC is not mounted and all IC is driven with 5.0 V. See Figure for the C413 MAIN/B board block diagram. Table 2-8 shows the function of the each main elements on C413MAIN. PROM 4M (IC6) Address Data D-RAM 1M (IC5) Reset IC (IC2) Table 2-8. Main Elements IC Location Function ASIC E01A24NA IC1 16bit CPU mounted on the MAIN board is driven by clock frequency 24MHz and controls the printer. PROM IC6 • Capacity 4MB, Bus= 16 bit • Program for CPU RAM IC5 Bus= 16 bit, 1Mbit DRAM IC3 1kbit EEPROM • Default value setting • Parameter backup BH6150F-E2 IC2 Reset IC • For +5V; reset when +4.2V is detected • For +36V, reset when +29.2 is detected E09A39RA IC9 Head drive control HIC • Generates head common voltage. XC901503FNR2 IC10 • CR motor driver • PF motor driver • +5V regulator 74LVX161284 IC7 IEEE1284 parallel I/F transceiver IC. EEPROM (IC3) AT93C46 CN4 E01A24CA CPU (IC1) Motor Driver (IC10) HP/PE/IC Sensor CN12 CR Motor CN7 PF Motor +5V CR1 Common Driver (IC9) Q2 & Q3 Common Driver (IC7) CN9 Head CN7 Parallel I/F (C413MAIN-B) CN3 USB (C413MAIN) Figure 2-21. Block Diagram for the (C413 MAIN/B) Board Following shows you the major characteristic of this main board. Timer IC & Lithium battery are not mounted Unlike the previous products, the Timer IC and the Lithium battery are not mounted on the Main board. So, this product perform the Power-on cleaning or Timer cleaning based on the time command which is sent from the printer driver. As for the detail, refer to the 2.1.7 Ink Sequence. D-RAM 1Mbit D-RAM is mounted on the Main board. One CPU controls the all function on the main board. Operating Principles Electrical Circuit Operating Principles 43 CHAPTER 3 TROUBLESHOOTING Stylus C40UX/C40SX/C20UX/C20SX Revision B 3.1 Overview Table 3-1. Motor, Coil Resistance This chapter describes how to identify troubles in two levels: unit level repair and component level repair. Refer to the flowchart in this chapter to identify the defective unit and perform component level repair if necessary. This chapter also explains motor coil resistance, sensor specification and error indication. Motor Location Check Point Resistance CR Motor CN12 Pin 1 and 3 Pin 2 and 4 9.6 Ohms ± 10% (at 25 °C/ phase) PF Motor CN7 Pin 1 and 3 Pin 2 and 4 7.35 Ohms ±10% (at 25 °C/ phase) START Table 3-2. Sensor Check Point Sensor Name Unit level Troubleshooting Check Point Signal Level Switch Mode Less than 0.7V Off • Out of HP range • No paper • Detect the I/C More than 2.4V On • Within HP range • Detect the paper • Not detects the I/C Analog signal 10 K (at 24 °C) Unit repair HP/PE Sensor CN4/Pin 1 and 2 Assemble & Adjustment Thermistor (THM) END TH1 (on the Head driver board) Figure 3-1. Troubleshooting Flowchart Troubleshooting Overview 45 Stylus C40UX/C40SX/C20UX/C20SX Revision B 3.2 Troubleshooting with LED Error Indications This section describes how to troubleshoot the problem when the printer indicates an error at power on and can not print. The Stylus C40UX/C40SX/C20UX/C20SX can detect the following six errors and seven status, and indicates them with the LEDs, as shows below. See the following tables which show the error conditions and corresponding possible causes: Table 3-4. Error Condition and possible cause Symptom Printer Status Priority Power Error On - 10 Ink sequence Blink - 6 Ink Cartridge change mode Blink - 5 Data processing Blink - 9 Paper Out - On 4 Paper jam condition - On 3 Ink end (Black) - On → ON 8 Ink level low (Black) - Blink → Blink 8 Ink end (Color) - On → ON 8 Ink level low (Color) - Blink→ Blink 8 Ink end (Black and Color) - ON → ON 8 No Ink Cartridge (Black and Color) - On 7 Alt Blink Alt Blink 2 Power ON condition Maintenance request (Ink Overflow Counter error) Fatal error Off On Check table Paper out error indication (Paper is not loaded correctly) • The friction of the LD roller is lowered due to the paper dust. • The clutch mechanism is broken. • Tension spring 0.143 come off in the clutch mechanism. • Compression spring 1.47 comes off. • Tip of Change lever has any damage. • PF motor is broken. Paper jam error indication • Star wheel assembly is not assembled on the Paper eject frame. • The Spur gear 10.8 is not assembled correctly. • The paper guide front is not assembled correctly or has any damage. • The PE detection lever dose not move smoothly. Table 3-8 Table 3-9 Table 3-10 Multiple papers are always loaded • The paper return plate dose not work correctly. Table 3-13 Paper is always loaded without any print job • The Change lever is broken in the Clutch mechanism. Table 3-14 Fatal error indication • HP sensor lever or PE sensor lever dose not move smoothly. • HP/PE sensor is defective. • CR motor is defective. • PF motor is defective. • Main board is defective. • Printer Housing dose not secured with screw on -the printer mechanism. Table 3-14 Table 3-15 Table 3-15 Table 3-3. Error Indicator of Operation Panel Indicators Possible Cause 1 " - " : Indicator status don't change. Table 3-5 Table 3-6 Table 3-7 " A -> B " :A is a indicator condition when carriage is on Home Position. B is a indicator condition in Ink exchange sequence. Troubleshooting Troubleshooting with LED Error Indications 46 Stylus C40UX/C40SX/C20UX/C20SX Revision B Table 3-4. Error Condition and possible cause (continued) Symptom Possible Cause Check table Any error indication is not displayed. But, the paper is not ejected completely. Paper jam dose not occur. • Paper eject roller gear is disengaged from the pump’s gears. • The Paper eject frame is not assembled in the Paper eject frame. Dot missing occur and it is not recovered with CL • Pump unit dose not absorb the ink from the printhead. • Cap unit dose not stick on the surface of the printhead completely. • The printhead is broken. • The head FFC has any damage. • The main board is defective. Print quality is not good • Vertical banding • Horizontal banding • Printing is blurred • Ink stains the paper • The accuracy of the CR motor is lowered. • The lack of the lubricant around the CR unit. • The both I/C is not held in the CR unit securely. • The Paper eject frame is deformed. • Any foreign material is sticking around the printhead. • Paper feed accuracy is lowered. • Printer driver setting is not suitable. • Paper path has ink stain somewhere. If the problem fits to the detail phenomenon in the table, make sure the check point and repair the product following the corresponding remedy mentioned in the table when you find the defective parts in the check point. Table 3-5. Paper out error indication Figure 3-16 Step No. Detail phenomenon Figure 3-17 Figure 3-18 Figure 3-19 1 Table 3-20 Table 3-21 Table 3-22 ASF LD roller attempt to load the paper. But, paper is not loaded at all. The LD roller seems slipping. Check point Remedy • Check the surface of the LD roller if the micro pearl or severe smear is adhered. • Set a cleaning sheet in the ASF up side down. Then holding the top edge, try to load the paper from the Printer driver. The micro pearl on the LD roller surface is removed. To remove severe smear, staple a cloth moistened with alcohol to a post card and clean the roller in the same manner. LD roller If it is no problem, proceed the next step. Non-adhesive Area (Use a post card for the base sheet) CL Sheet Adhesive Area Staplers This side down Cloth moistened with alcohol • If the problem is not solved, replace the LD unit with new one. Troubleshooting Troubleshooting with LED Error Indications 47 Stylus C40UX/C40SX/C20UX/C20SX Revision B Table 3-6. Paper out error indication Step No. Detail phenomenon ASF LD roller dose not attempt to load the paper. But, the PF motor and the Spur gear 35.2 is rotating. Check point • Check if the clutch tooth is broken. Table 3-7. Paper out error indication Remedy Step No. • Replace the LD unit with new one. Clutch tooth 3 4 If it is no problem, proceed the next step. 1. Set the tension spring 0.143 in the clutch mechanism. When the print data is sent to the printer, ASF LD roller continue to load the paper even if the first paper is loaded to the PF roller and the paper is ejected while the ASF hopper is flapping. Tension spring 0.143 1. Replace the Change lever (Printer mechanism) with new one. Comp. spring 1.47 2. Check if the Compression spring 1.47 comes off from the Change lever. 2. Set the Compression spring 1.47 in the Change lever. If it is no problem, proceed the next step. 5 2. Set the Compression spring 1.47 in the Change lever. Troubleshooting Remedy Change lever 1. Check if the tension spring 0.143 comes off in the Clutch mechanism. ASF LD roller dose not attempt to load the paper. But, the PF motor and the Spur gear 35.2 is rotating. Check point 1. Check if the tip of the Change lever has any damage. 2 Spur gear 35.2 Detail phenomenon When the printer is turned on, PF motor dose not operate at all in the power on sequence. Troubleshooting with LED Error Indications 1. Check if the PF motor connector is connected to the CN7. 2. Check if the PF motor coil resistance is about 7.35 ohm by using tester Refer to Table 3-1. 1. Connect the PF motor connector to the CN7 on the Main board. 2. Replace the Printer mechanism with new one. 3. If the problem is not solved, replace the Main board with new one. 48 Stylus C40UX/C40SX/C20UX/C20SX Revision B Table 3-8. Paper jam error indication Step No. Detail phenomenon Check point Table 3-9. Paper jam error indication Remedy Step No. Detail phenomenon • Check if the star wheel • Replace the Paper eject assembly is assembled frame with new one. in the Paper eject frame. 1 Paper is not ejected completely and jammed around the Paper eject frame. 3 Star wheel assy Paper is loaded correctly from ASF. But, after complete the print job, paper jam indicated on the screen without any paper jam. Check point • Check if the Torsion spring 0.22 comes off on the both PE sensor lever. Tension spring 0.22 Remedy • If the Torsion spring 0.22 is not set on the correct position, set it correctly. If any paper dust is placed around the PE sensor lever, remove it. PE sensor lever • If it is no problem, proceed the next step. If it is no problem, proceed the next step. • Check if the Paper eject roller is rotating correctly. • Set the tip of the Spur gear 60 to the PF motor pinion and assemble it correctly. Spur gear 60 2 Ditto PF motor pinion If it is no problem, proceed the next step. Troubleshooting Troubleshooting with LED Error Indications 49 Stylus C40UX/C40SX/C20UX/C20SX Revision B Table 3-11. Paper Jam Error indication Table 3-10. Paper jam error indication Step No. Detail phenomenon The PF roller continues to turn when the printer’s power is turned on. Check point Remedy 1. If the Torsion spring 0.22 is not set on the correct position, set it correctly. If any paper dust is placed around the PE sensor Tension Spring 0.22 lever, remove it. 2. If the Torsion spring 0.22 is not set on the correct position, set it correctly. If any paper dust is placed PE sensor lever around the HP/IC sensor 2. Check if the Torsion level, remove it. spring 0.22 comes off on the both HP/IC sensor lever Detail phenomenon 1. Check if the Torsion spring 0.22 comes off on the both PE sensor lever HP/IC sensor lever Torsion spring 0.22 3. Check if the CN4 connector cable for HP/ PE sensor cable is disconnected on the Main board or sensor. 4. Check if the HP/PE sensor operates correctly by using the tester. Refer to Table 3-2. 5 Remedy 1. Check if the CR motor connector is connected CN12 on the Main board. 2. Check if the coil resistance of the CR motor is about 9.8 ohm by using the tester. Refer to Table 3-1. 1. Connect the CR motor connector to the CN12 on the Main board. 2. Replace the CR motor with new one. Table 3-12. Ink Out error indication 3. Connect the CN4 connector cable to the CN4 on the Main board. Detail phenomenon “Ink Out error” is displayed regardless of whether a new ink cartridge is installed or not. 4. Replace the LD unit with new one. 5. If the problem is not solved, replace the Main board with new one. When the printer is turned on, the CR unit dose not move at all in the power on sequence. Check point 3. If the problem is not solved, replace the Main board with new one. Step No. 4 Troubleshooting Step No. Check point 1. Check if the HP/IC detection lever is damaged. 1 Troubleshooting with LED Error Indications 2. Check if the cover cartridge is damaged. Remedy 1. Replace the LD unit with new one. 2. Replace the cover cartridge with a new one. 50 Stylus C40UX/C40SX/C20UX/C20SX Revision B Table 3-13. Multiple papers are always loaded Step No. 1 Detail phenomenon Any error indication is not displayed on the monitor. But, multiple papers are always loaded from ASF. Check point Check if the Paper return plate is operating correctly in the ASF when the paper is loaded. Remedy Table 3-15. Fatal Error indication Step No. Detail phenomenon Check point 1. Check if the compression spring 1.47 is installed securely on the change lever. • Assemble the torsion spring 26 in the ASF frame. Remedy 1. Install the compression spring 1.47 securely. Change lever Torsion spring 26 Table 3-14. Paper is always loaded without any print job Step No. 4 Detail phenomenon Paper is always loaded from ASF without any print job. 1 ASF hopper continue to flapping when the printer is turned on. Troubleshooting Check point Remedy When the printer is turned on, it sounds strange noise and the CR unit is stopped around the CR lock lever. Check if the tip of the Change lever has any damage. Change lever Replace the Change lever (Printer mechanism) with new one. Troubleshooting with LED Error Indications Comp. spring 1.47 2. Check if the PF motor is operated. Check the CN7 connector and the coil resistance for PF motor. 2. Connect the PF motor cable to CN7 on the Main board. Replace the PF motor with new one. 3. If the CR lock lever is not released even if the PF motor rotate in the power on sequence, check if one of the gears has any damage in the PF motor torque transportation path. Refer to Figure 2-15. 3. Replace the Printer mechanism with new one. 4. If the problem is not solved, replace the Main board with new one. 51 Stylus C40UX/C40SX/C20UX/C20SX Revision B Table 3-16. Paper is not ejected completely without any error indication Step No. 1 Detail phenomenon Printing is normal. But, the paper is not ejected completely and the bottom area stay around the Paper eject frame. Check point Remedy 1. Check if the Paper eject roller rotate when the paper is ejected. 1. Assemble the Spur gear 60 to the PF motor pinion. Table 3-17. Dot missing occur and it is not recovered with CL Step No. Detail phenomenon Check point Remedy Spur gear 60 1. Check if ink is ejected to the waste ink pad via pump unit in the CL sequence. PF motor pinion 2. Check if there is any foreign material around the seal rubber parts on the cap assembly. 1. If ink is not ejected at all to the waste ink pad in the CL sequence, proceed the following check point 2). 2. Remove the foreign material around the seal rubber parts. Cap seal rubber parts 2. Check if the Paper eject frame is secured with the three fixing screws to the Main frame. 2. Secure the Front frame with the two fixing screws to the Main frame. 1 Front frame In the CL sequence, the pump unit seems work correctly. But, ink is not ejected to the waste ink pad at all. Moreover, any ink is not absorbed from the head to the cap. Screws 3. Check if any damage is observed around the seal rubber parts on the cap assembly. 3. Replace the Printer mechanism with new one. 4. Check if the compression spring is assembled in the Cap assembly correctly. 4. Replace the Printer mechanism with new one. Compression spring Troubleshooting Troubleshooting with LED Error Indications 52 Stylus C40UX/C40SX/C20UX/C20SX Revision B Table 3-18. Dot missing occur and it is not recovered with CL Step No. Detail phenomenon Check point 5. Check if the Pump tube is connected to the bottom of the Cap assembly correctly 1 In the CL sequence, the pump unit seems work correctly. But, any ink is not ejected to waste ink pad. Moreover, any ink is not absorbed from the head to the cap. Pump tube connection point 6. Check if the pump tube has a little slack between the Cap assembly and the pump unit when the Cap assembly is slide up completely. Cap assy. Remedy Table 3-19. Dot missing occur and it is not recovered with CL Step No. Detail phenomenon Check point Remedy 1. Check if the segment in the nozzle check patter is reduced every CL & Nozzle check pattern printing. 2. Check if any damage is observed on the Head FFC. 1. Replace the I/C with new one in the I/C replacement sequence. 2 In the CL sequence, ink is ejected to the Waste ink pad (this means pump unit & cap unit are working correctly). But, the dot missing is not solved at the specific nozzles even if the several CLs are performed. In the CL sequence, ink is ejected to the Waste ink pad. But, dot missing is occurred on all nozzle in the printing and is not solved in the several CLs. 1. Check if the Head FFC is connected to the CN9 on the Main board or Head FFC. 5. Replace the Printer mechanism with new one. 6. Pump unit may coil the pump tube inside the unit. In this case, pull out the coiled tube from the pump unit carefully. After that, connect the pump tube to the Cap assembly after placing the tube correctly. 3 2. Replace the Head FFC with the new one. 3. Replace the printhead with new one. 1. Connect the Head FFC securely to the CN9 on the Main board or Printhead. 2. Replace the Printhead with new one. 3. Replace the Main board with new one. Tube Pump unit 7. If the problem is not solved, replace the Printer mechanism with new one. Troubleshooting Troubleshooting with LED Error Indications 53 Stylus C40UX/C40SX/C20UX/C20SX Revision B . Table 3-20. Print quality is not good Step No. Detail phenomenon Vertical banding is appeared against the CR movement direction. And it looks like uneven printing. Check point Remedy 1. Check if each segment is printed correctly in the nozzle check pattern. 2. Check if the CR rail 1. Perform the CL and check the nozzle check pattern. on the main frame is not extremely dirty, etc. 3. Check if the surface of the CR sliding portion on the Paper eject frame has enough oil. 1 Table 3-21. Print quality is not good CR movement direction Step No. 1 Check point Ditto the main frame and lubricate G-58. 3. Clean the surface of the CR sliding portion on the Paper eject frame and lubricate specific amount of the G-58. Micro banding appears horizontally against the paper feeding direction and it appears with the same width. 2 CR movement direction 1. Check if each segment is printed correctly in the nozzle check pattern. 2. Check if the suitable paper is used according to the printer driver setting. 3. Check if the Paper feed roller is dirty. 4. Check if the following parts do not have any damage. 1. Perform the CL and check the nozzle check pattern. by using the Adjustment program. 2. Use the suitable paper according to the printer driver setting. 3. Clean the surface of the PF roller carefully with the soft brush 4. Replace the Printer mechanism with new one. Spur gear 60 4. Replace the Paper eject frame with new one. PF motor pinion Troubleshooting Remedy 5. Replace the following parts. • CR motor • CR timing belt • Compression spring 11.8 2. Clean the CR rail on G-58 lubrication 4. Check if the surface of the Paper eject frame is flat. Detail phenomenon Troubleshooting with LED Error Indications 5. Replace the Printhead with new one. 54 Stylus C40UX/C40SX/C20UX/C20SX Revision B Table 3-22. Print quality is not good Step No. 3 4 Detail phenomenon Check point Remedy 1. Use the suitable paper according to the driver setting. Printing is blurred 1. Check if the suitable paper is used according to the printer driver setting. 2. Check if the correct head ID is stored in the EEPROM by using the Adjustment program. 1. Clean the ink stained parts with soft cloth. Ink stains the paper 1. Check if the following parts are stained with ink. • PF roller • Paper guide front • Paper eject roller. 2. Check if there is some ink drops around the backside of the printhead. 3. If the bottom area of the printed paper has ink stain, check if the Paper eject frame is secured with three screws. 4. If the bottom area of the printed paper has ink stain, check if the Paper eject frame is bent upward. Troubleshooting 2. Input 6 digits code of the head ID into the EEPROM by using the Adjustment program. 2. Wipe off the ink drop with the soft cloth carefully. 3. Secure the screws fixing the Paper eject frame. 4. Replace the Paper eject frame with new one. Troubleshooting with LED Error Indications 55 CHAPTER 4 DISASSEMBLY AND ASSEMBLY Stylus C40UX/C40SX/C20UX/C20SX Revision B 4.1 Overview 4.1.1 Precautions This section describes procedures for disassembling the main components of the Stylus C40UX/C40SX/C20UX/C20SX. Unless otherwise specified, disassembly units or components can be reassembled by reversing the disassembly procedure. Things, if not strictly observed, that could result in injury or loss of life are described under the heading “Warning”. Precautions for any disassembly or assembly procedures are described under the heading “CAUTION”. Chips for disassembling procedures are described under the heading “CHECK POINT”. If the assembling procedure is different from the reversed procedure of the disassembling, the procedure is described under the heading “REASSEMBLY”. Any adjustments required after disassembling the units are described under the heading “ADJUSTMENT REQUIRED”. When you have to remove any units or parts that are not described in this chapter, refer to the exploded diagrams in the appendix. See the precautions given under the handling “WARNING” and “CAUTION” in the following column when disassembling or assembling the Stylus C40UX/C40SX/ C20UX/C20SX. Disconnect the power cable before disassembling or assembling W A R N IN G the printer. If you need to work on the printer with power applied, strictly follow the instructions in this manual. Wear protective goggles to protect your eyes from ink. If ink gets Read precautions described in the next section before starting. Disassembly and Assembly Overview in your eye, flush the eye with fresh water and see a doctor immediately. Always wear gloves for disassembly and reassembly to avoid injury from sharp metal edges. To protect sensitive microprocessors and circuitry, use static discharge equipment, such as anti-static wrist straps, when accessing internal components. Never touch the ink or wasted ink with bare hands. If ink comes into contact with your skin, wash it off with soap and water immediately. If irritation occurs, contact a physician. When a lithium battery is installed on the main board of this printer, make sure to observe the following instructions when serving the battery: 1. Keep the battery away from any metal or other batteries so that electrodes of the opposite polarity do not come in contact with each other. 2. Do not heat the battery or put it near fire. 3. Do not solder on any part of the battery. (Doing so may result in leakage of electrolyte from the battery, burning or explosion. The leakage may affect other devices close to the battery.) 4. Do not charge the battery. (An explosion may be generated inside the battery, and cause burning or explosion.) 5. Do not dismantle the battery. (The gas inside the battery may hurt your throat. Leakage, burning or explosion may also be resulted.) 6. Do not install the battery in the wrong direction. (This may cause burning or explosion.) Danger of explosion if the battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacture. Dispose the used batteries according to government’s law and regulations. 57 Stylus C40UX/C40SX/C20UX/C20SX W A R N IN G Revision B Avant de commencer, assurez vous que l’imprimante soit eteinte et que le cordon d’alimentation soit debranche. Lorsque vous changez la pile au lithium, assurez vous que la nouvelle respecte bien les caracteristiques requises. Lorque que vous installez la pile au lithium, faites attention a l’inserer dans le bon sens en respectant la polarite. Veillez a jeter les piles usagees selon le reglement local. Ne rechargez pas les piles au lithium. C A U T IO N Never remove the ink cartridge from the carriage unless this C A U T IO N Risque d’explosion si la pile est remplacée incorrectment. Ne remplacer que par une pile du même type ou d’un type équivalent recommandé par le fabricant. Eliminer les piles déchargées selon les lois et les règles de sécurité en vigueur. Disassembly and Assembly Overview manual specifies to do so. When transporting the printer after installing the ink cartridge, be sure to pack the printer for transportation without removing the ink cartridge. Use only recommended tools for disassembling, assembling or adjusting the printer. Observe the specified torque when tightening screws. Apply lubricants and adhesives as specified. (See Chapter 6 for details.) Make the specified adjustments when you disassemble the printer. (See Chapter 5 for details.) When assembling, if an ink cartridge is removed and needs to be installed again, be sure to install a new ink cartridge because of the following reasons; 1. Once the ink cartridge mounted on the printer is removed, air comes in and creates bubbles in the cartridge. These bubbles clog ink path and cause printing malfunction. 2. If an ink cartridge in use is removed and is reinstalled, ink quantity will not be detected correctly since the counter to check ink consumption is cleared. Because of the reasons above, make sure to return the printer to the user with a new ink cartridge installed. 58 Stylus C40UX/C40SX/C20UX/C20SX Revision B 4.1.2 Tools 4.1.3 Screws Use only specified tools to avoid damaging the printer. Table 4-2. No. Table 4-1. Name Supplier Outward Form Parts No. Phillips Screw Driver (No.1) EPSON B743800100 Phillips Screw Driver (No.2) EPSON B743800200 Nipper EPSON B740500100 Tweezers EPSON B741000100 Disassembly and Assembly Name and Specification Overview 1 CBS 3x6 2 CBP 3x8 3 CBS (P2) 3x6 4 CBS 3x8 5 C.P.F.S-Tite 3x12 59 Stylus C40UX/C40SX/C20UX/C20SX Revision B 4.1.4 Work Completion Check Table 4-3. Work Completion Check (continued) Classification If any service is made to the printer, use the checklist shown below to confirm all works are completed properly and the printer is ready to be returned to the user. Table 4-3. Work Completion Check Classification Lubrication Item Self-test On-line Test Printhead Carriage Mechanism Main Unit Check Point Status Is the operation normal? Is the printing successful? Is ink discharged normally from all the nozzles? Does it move smoothly? Is there any abnormal noise during its operation? Is there any dirt or foreign objects on the CR Guide Shaft? Is the CR Motor at the correct temperature? (Not too heated?) Paper Feeding Mechanism Is paper advanced smoothly? • No paper jamming? • No paper skew? • No multiple feeding? • No abnormal noise? Is the PF Motor at correct temperature? Is the paper path free of any obstructions? Adjustment Specified Adjustment Disassembly and Assembly Are all the adjustment done correctly? Item Specified Lubrication Checked Not necessary Checked Others Checked Is the amount of lubrication correct? Are the ink cartridges installed correctly? Protective Materials Have all relevant protective materials been attached to the printer? Attachments, Accessories Have all the relevant items been included in the package? Checked Not necessary Are all the lubrication made at the specified points? Ink Cartridge Packing Not necessary Check Point Status Checked Not necessary Checked Not necessary Checked Not necessary Checked Not necessary Checked Not necessary Not necessary Checked Not necessary Checked Not necessary Checked Not necessary Checked Not necessary Checked Not necessary Checked Not necessary Checked Not necessary Overview 60 Stylus C40UX/C40SX/C20UX/C20SX Revision B 4.2 Disassembly 4.2.1 Upper housing removal The flowchart below shows step-by-step disassembly procedures. When disassembling each unit, refer to the page number shown in the figure. 1. Upper housing removal Page 61 ASF unit removal Page 63 PS unit removal Page 65 Move the edge guide to the right until it stops moving. Make sure the edge guide is in the upper housing’s notch position. Edge guide CR Motor removal Page 73 Printhead unit removal Paper eject roller removal Page 74 Page 66 MAIN board removal LD unit removal Page 71 Page 76 Waste ink pad removal Page 76 Figure 4-2. Position of Edge guide Figure 4-1. Disassembling Flowchart C A U T IO N Do not remove the Main Frame from the Lower Housing to avoid the deformation of the Main Frame. Therefore, you cannot remove the following parts. Lower Housing Main Frame PF Motor Pump Unit Cap Unit PF Roller Assy. Disassembly and Assembly Disassembly 61 Stylus C40UX/C40SX/C20UX/C20SX 2. Revision B Remove the 2 hooks at the front using a precision screwdriver (-). C A U T IO N 3. Remove the 2 hooks on the sides by pushing the tops of the hooks up. The printer should not turn when the front 2 hooks are removed. Upper housing Figure 4-4. Removing the side hook 4. Remove the 3 hooks at the back using a (-) screwdriver or similar tool. Figure 4-3. Removing the front hook Figure 4-5. Removing the back hook Disassembly and Assembly Disassembly 62 Stylus C40UX/C40SX/C20UX/C20SX Revision B 4.2.2 ASF unit removal 1. Remove the upper housing. (Refer to Section 4.2.1) 2. Take out the three screws. A D J U S T M E N T R E Q U IR E D The Top Margin adjustment is required when the ASF unit is replaced. CBP 3×8 CBS (P2) 3×6 3 1 CBP 3×6 2 Figure 4-6. Removing the ASF unit 3. Pull the ASF unit toward the rear and remove it. When installing the ASF unit, install the spring in the guide, then install it while supporting it by hand. Figure 4-7. reassembling the ASF unit When reassembling the ASF unit tighten screws form lower numbers in Figure4-6. Tightening Torque for screw - C.B.S 3x6 - C.B.S (P2) 3x6 - C.B.P 3x8 Disassembly and Assembly : 9+/-1 kgf.cm : 9+/-1 kgf.cm : 6+/-1 kgf.cm Disassembly 63 Stylus C40UX/C40SX/C20UX/C20SX Revision B 4.2.3 Waste ink pad removal 1. Remove the upper housing. (Refer to Section 4.2.1) 2. Remove the ASF unit. (Refer to Section 4.2.2) 3. Remove the Waste ink pad. A D J U S T M E N T R E Q U IR E D When the Waste ink pad is replaced with a new one, following service item is required. Waste ink counter reset operation. (Refer to Section 5.1.12) Waste ink pad tube stopper Figure 4-8. Removing the Waste ink pad When assembling the Waste ink pad, be sure to set the tip of the ink tube in the correct position of the Waste ink pad. Otherwise it will cause ink leakage. Tip of ink tube Figure 4-9. Tip of ink tube setting position Disassembly and Assembly Disassembly 64 Stylus C40UX/C40SX/C20UX/C20SX Revision B 4.2.4 PS unit removal When installing the PS unit, make sure the claws are attached to the hooks on the lower housing. 1. Remove the upper housing. (Refer to Section 4.2.1) 2. Remove the ASF unit. (Refer to Section 4.2.2) 3. Disconnect the cable from the connector (CN2) on the main board using tweezers, etc. 4. Take out the 2 screws. CN2 PS unit Figure 4-11. Reassembling the PS unit C.B.S 3×6 Do not insert the pin of the PS cable to the leftmost side of the connector because the 1st pint of its cable is cut. C.B.P 3×8 Figure 4-10. Removing the PS unit 5. 2 3 4 5 Pull the PS unit out while lifting up on it. Blue line marking Figure 4-12. Connecting the PS cable(CN2) Tightening Torque for screw - C.B.S 3x6 - C.B.P 3x8 Disassembly and Assembly Disassembly : 6+/-1 kgf.cm : 6+/-1 kgf.cm 65 Stylus C40UX/C40SX/C20UX/C20SX Revision B 4. 4.2.5 Paper eject roller removal 1. Remove the upper housing. (Refer to Section 4.2.1) 2. Grip the dowel pin of the PE roller’s gear, turn it clockwise and release the carriage lock. Protrusion Take out the two screws. CBS 3×6 Figure 4-14. Take out the screw 5. Return the carriage to the home position, then remove the Front Frame. Figure 4-13. Releasing the carriage lock 3. Move the carriage to the center. Front Frame Figure 4-15. Removing the Front Frame Disassembly and Assembly Disassembly 66 Stylus C40UX/C40SX/C20UX/C20SX 6. Revision B Slide the PE roller to the left side, then remove the claw extending from the lower housing. C A U T IO N Paper Eject roller If the Paper eject roller gear and Paper eject roller shaft are removed or , make sure that neither of the Paper eject roller shaft hooks is damaged. If either of the hooks is damaged, it should be replaced with a new one. hook Figure 4-16. Releasing the claw extending 7. Remove the gear from the frame, then remove the Paper eject roller. Figure 4-18. Hook of Paper eject roller Tightening Torque for screw - C.B.S 3x6 screw for Front frame : 6+/-1 kgf.cm Gear Figure 4-17. Removing the Paper eject roller Disassembly and Assembly Disassembly 67 Stylus C40UX/C40SX/C20UX/C20SX 4.2.6 Paper Guide Upper/Left removal C A U T IO N Revision B 3. Press the dowel of the paper guide unit with tweezers, etc., then pull it forward and remove it. Perform this operation by the following procedures so that the coating material of the PF roller does not damage. 1. Remove the upper housing. (Refer to Section 4.2.1) 2. Place the OHP sheet between the Paper Guide Upper/Left and the PF roller by rotating the protrusion of the Paper Eject roller gear in CW direction. OHP paper dowel Figure 4-20. Removing the Paper Guide Upper/Left Protrusion Figure 4-19. Place the OHP sheet Disassembly and Assembly Disassembly 68 Stylus C40UX/C40SX/C20UX/C20SX Revision B 1. Insert the tip of the spring to the Paper Guide. 3. Assemble the Paper Guide Upper/Left to the Main Frame. Figure 4-21. Setting the spring to the Paper Guide Figure 4-23. Assembling the Paper Guide 1 2. Place the OHP sheet on the PF roller. 4. Fix the dowel of the Paper Guide Upper/Left to the hole of the Main Frame by sliding the Paper Guide Upper/Left to the right side. And, release the spring from the hook of the Paper Guide Upper/Left. dowel OHP paper Release the spring Figure 4-22. Placing the OHP sheet Figure 4-24. Assembling the Paper Guide 2 Disassembly and Assembly Disassembly 69 Stylus C40UX/C40SX/C20UX/C20SX Revision B 5. Eject the OHP sheet from the printer by rotating the protrusion of the Paper Eject roller gear in CW direction. Protrusion Figure 4-25. Ejecting the OHP sheet Disassembly and Assembly Disassembly 70 Stylus C40UX/C40SX/C20UX/C20SX Revision B 5. 4.2.7 MAIN board removal 1. Remove the upper housing. (Refer to Section 4.2.1) 2. Remove the ASF unit. (Refer to Section 4.2.2) 3. Remove the PS unit. (Refer to Section 4.2.4) 4. Remove the two hooks, then remove the Switch cover. Remove the three screws, then remove the shield cover. USB Type CBS 3×6 Switch cover Parallel Type Hooks C.P.F.S-Tight 3×12 Figure 4-26. Removing the Switch cover CBS 3×6 Figure 4-27. Removing the Shield cover Disassembly and Assembly Disassembly 71 Stylus C40UX/C40SX/C20UX/C20SX 6. Disconnect the four connectors (CN9, CN4, CN7, CN12). Revision B 8. Lift the MAIN board up and remove it. Tightening Torque for screw USB Type - C.B.S 3x6 screw - C.B.S 3x8 screw Parallel Type - C.B.S 3x6 screw - C.P.F.S-Tight 3x12 screw - C.B.S 3x8 screw CN9 CN4 : 9+/-1 kgf.cm : 9+/-1 kgf.cm : 9+/-1 kgf.cm : 9+/-1 kgf.cm : 9+/-1 kgf.cm CN7 CN12 A D J U S T M E N T R E Q U IR E D Figure 4-28. Disconnecting the connectors 7. Take out the 1 screw. CBS 3×8 When replacing the Main board with a new one, perform the following service items. Before removing the Main Board, connect the parallel cable or USB cable and try to read out the following data by using the Adjustment program. If this operation succeeds, replace the Main board and write the read out data to the new Main board through the Adjustment program. (Refer to Section 5.1.14) 1) I/C Ink consumption counter. 2) Waste ink drain pad counter. 3) EEPROM Initial setting 4) Head ID input 5) Top margin adjustment 6) Bi-D adjustment In case the above mentioned data are not able to be read out from the defective Main board, perform the following service items. Replace the both ink cartridges with a brand new one. Replace the Waste ink pad with a new one. Reset the Ink pad counter Input the EEPROM initial setting value Input the Head ID Adjust the Top margin Adjust the Bi-D alignment. Figure 4-29. Removing the MAIN board Disassembly and Assembly Disassembly 72 Stylus C40UX/C40SX/C20UX/C20SX Revision B 5. 4.2.8 CR motor removal 1. Remove the upper housing. (Refer to Section 4.2.1) 2. Move the carriage to the center. 3. Press on the driven pulley and loosen the timing belt, then remove the timing belt from the CR pinion gear. Disconnect connector CN7 from the MAIN board then disconnect the cable. When reassembling the CR motor, it contact the lib of Main frame after turning clockwise. Timing belt lib Driven pulley CR pinion gear Figure 4-30. Removing the Timing belt 4. Take out the screw, then remove the CR motor from the frame. Figure 4-32. Reassembling the CR motor CR motor Tightening Torque for screw - C.B.S 3x6 screw A D J U S T M E N T R E Q U IR E D : 9+/-1 kgf.cm The Bi-D adjustment is required when the CR motor is removed or replaced. Refer to Table 5-1 CBS 3×6 Figure 4-31. Removing the CR motor Disassembly and Assembly Disassembly 73 Stylus C40UX/C40SX/C20UX/C20SX Revision B 6. 4.2.9 Printhead unit removal 1. Remove the upper housing. (Refer to Section 4.2.1) 2. Remove the ink cartridges. 3. Move the carriage to the center. 4. Press on the driven pulley and loosen the timing belt, then remove the timing belt from the CR pinion gear. Press on the left and right inside of the carriage unit, then pull the unit forward and remove the cover. Carriage cover Timing belt Driven pulley CR pinion gear Figure 4-33. Removing the Timing belt 5. Figure 4-35. Removing the Carriage cover 7. Lift the Printhead unit up and remove it. Disconnect the FFC from the carriage unit. FFC Printhead unit Carriage unit Figure 4-36. Removing the Printhead unit Figure 4-34. Disconnecting the FFC Disassembly and Assembly Disassembly 74 Stylus C40UX/C40SX/C20UX/C20SX 8. Revision B Disconnect the FFC from the connector. A D J U S T M E N T R E Q U IR E D FFC When the Printhead is replaced with a new one, following adjustments must be performed in the order below: Refer to Table 5-1 1. Initial ink charge 2. Head ID input 3. Bi-D adjustment When the Printhead is removed and reinstalled, only the following adjustment is required. Refer to Table 5-1 1. Head cleaning 2. Bi-D adjustment Figure 4-37. Disconnecting the FFC If the Carriage unit is disassembled or replaced with a new one, make sure that the Carriage timing belt is set in the assembling groove correctly as following figure. Timing belt Disassembly and Assembly Disassembly 75 Stylus C40UX/C40SX/C20UX/C20SX Revision B 4.2.10 LD unit removal When reassembling the LD unit, make sure that seven hooks are 1. Remove the upper housing. (Refer to Section 4.2.1) 2. Remove the ASF unit. (Refer to Section 4.2.2) 3. Disconnect the cables which are connected to the LD unit. 4. Disconnect connector CN4 form the MAIN board. set to the Main frame. LD unit Figure 4-40. Setting seven hooks Cables A D J U S T M E N T R E Q U IR E D Figure 4-38. Disconnecting the Cables 5. The Top Margin adjustment is required when the LD unit is replaced. Push the two hooks on the LD unit, then lift it up and remove hook of pump unit Hooks Figure 4-39. Removing the LD unit Disassembly and Assembly Disassembly 76 Stylus C40UX/C40SX/C20UX/C20SX Revision B 4.2.11 Printer mechanism removal 1. Remove the upper housing. (Refer to Section 4.2.1) 2. Remove the ASF unit. (Refer to Section 4.2.2) 3. Remove the PS unit. (Refer to Section 4.2.4) 4. Remove the Printhead unit. (Refer to Section 4.2.9) 5. Remove the Paper eject roller. (Refer to Section 4.2.5) A D J U S T M E N T R E Q U IR E D When the Printer mechanism with a new one, following adjustments must be performed in the order below: Refer to Table 5-1 1. Initial ink charge 2. Head ID input 3. Top margin adjustment 4. Bi-D adjustment Disassembly and Assembly Disassembly 77 CHAPTER 5 ADJUSTMENT Stylus C40UX/C40SX/C20UX/C20SX Revision B 5.1 Overview This section describes the procedure for adjustments required when the printer is disassembled and assembled for repair or service. 5.1.1 Required Adjustment Table 5-1 lists all the necessary adjustments for this printer. If any service listed in this table is carried out, all adjustments corresponding to that service item should be performed to ensure proper operation of the printer. Table 5-1. Required Adjustment Performance Priority 1 2 Replacing parts/ Service item EEPROM initial setting Ink pad Counter reset Initial Head USB Top margin Bi-D Ink ID ID Adjustment Adjustment Charge Setting Input Replacing the Main Board c d NA e f g h Removing the Printhead unit NA NA NA NA NA c NA Replacing the Printhead unit NA NA c d NA e NA Replacing the CR motor NA NA NA NA NA c NA Replacing the Printer mechanism NA NA c d e f NA Replacing the Waste drain ink pad NA c NA NA NA NA NA Removing or Replacing the ASF unit NA NA NA NA c NA NA Removing or Replacing the LD unit NA NA NA NA c NA NA Adjustment 3 4 5 6 7 NOTE: • “O”: Required Adjustment. The number in the circle shows the required adjustment order. “NA”: Not applicable. • Following adjustments are not required on this product. -Platen Gap adjustment -Head Angular adjustment. • When the Main board is replaced with new one, you may have to replace the following parts also in case the EEPROM parameter back up function is not available on the defective main board. * Waste drain ink pad * Both Black & Color Ink Cartridge This section describes the detailed procedures of each adjustment by Adjustment Program. In this printer, it is necessary to set the adjusting information for each printer mechanism in order to maintain consistent printing function and quality, eliminating differences of each printer mechanism’s characteristics. Therefore, in case that the combination of the printer mechanism and main board changes or the print head is replaced during the repair service, you must set and save the correct information to the MAIN board, using the exclusive adjustment program. Overview C H E C K P O IN T In case any parts is removed and assembled on the repair product while running the Adjustment program, turn off the printer certainly. 79 Stylus C40UX/C40SX/C20UX/C20SX Revision B 2. 5.1.2 Adjustment Program Initial Setting menu Select the Interface port number which you connect the printer to your PC. You have to input the following four items before entering the adjustment main menu. Model name (Stylus C40UX/40SX/20UX/20SX) For the Stylus C40UX, select Model name “Stylus C40UX.” Interface setting (LPT1, LPT2, LPT3, EPUSB1, EPUSB2, EPUSB3) 1. When you run this program, the following menu appears. Select the model name in the screen below. Figure 5-2. Interface Setting Figure 5-1. Model Name Selection NOTE: This printer stores model name in the PROM. Therefore, even you select the model name in the screen above, model name will not stored in the EEPROM. Selecting model name in the screen above determines respective special command for each model. Adjustment Overview 80 Stylus C40UX/C40SX/C20UX/C20SX Revision B The user interface of the main menu on this program is shown below. 5.1.3 Adjustment Program feature The adjustment program enables you to set various values correctly to prevent malfunction and fluctuation of printing quality and printing function caused by difference in components and assembly when the printer components are replaced during repair. Basic adjustment items by using this program are shown as fellows. C H E C K P O IN T This program does not operate under DOS or Windows 3.X, NT. Perform this adjustment program using parallel I/ F or USB. Table 5-2. Basic adjustment items No Main Menu Service Figure 5-3. Adjustment program main menu EEPROM initial setting Head ID input 1 Adjustment Bi- D adjustment Head cleaning Additionally, this program runs under the D4 (IEEE-1284.4) protocol. So, this program can get the several error statuses even if the printer is error condition, and can control the printer under the error condition. Following explain you the common function of the Adjustment program. Initial ink charge Quit Refurbishment for DOA If you want to exit this program, click the “Quit” button. Following menu is displayed on the screen. And clicking the “Quit” Button in the following menu exit the adjustment program completely. Clicking the “Next” button returns to the Top menu (Initial setting menu) of Figure 5-3. USB ID input Top margin 2 The “Adjusted item” in the right column shows you the adjusted item which executed in this program and it is easy to confirm the adjusted value. Maintenance Protection counter check EEPROM check EEPROM back up data 3 Print A4 pattern A4 pattern will print Figure 5-4. Quit function Adjustment Overview 81 Stylus C40UX/C40SX/C20UX/C20SX Revision B Get status This function is used to get the printer status and following figure is displayed on the screen by clicking the “Get status” button. This function can get the printer status even if the printer is error condition except the main logic circuit failure, and control the printer by using the D4 mode functions. C A U T IO N This program dose not display the “Paper out” error status in the Bi-d adjustment even if the paper is out in the ASF. When the paper is out in the ASF, this program continues to send the paper feed command until the paper is set in the ASF. Figure 5-5. Get status function Adjustment Overview 82 Stylus C40UX/C40SX/C20UX/C20SX Revision B 5.1.4 EEPROM initial setting 5.1.5 Head ID This function is used when replacing the MAIN board. This adjustment function is required when any of the following parts is replaced. Using this function enables writing of the initial setting values to the new MAIN board’s EEPROM. 1. Choose the “EEPROM initial setting” in the Adjustment menu. Printhead Main board Printer mechanism This adjustment function enables you to write printhead Voltage ID into the specific address of the EEPROM. This operation is considered the most important to maintain proper ink discharging system. If any ID is not written correctly, it results in white or color lines and also gives bad influence on dot weight. 1. When replacing any of the parts above, make a note of VH voltage ID in advance. You can find the VH voltage ID on the following position: Printhead: On the top right face of the printhead. A 6-digit ID code is printed with the QR code on the label. Printer mechanism: On the label of the packing box of the printer mechanism. 2. Run the Adjustment program and enter the Adjustment Main menu. 3. Choose the “Head ID” and click it. The menu shown in the next page appears. Figure 5-6. EEPROM initial setting 2. Click the “OK” button, then the initial setting values are written to the MAIN board. Figure 5-7. Head ID input menu Adjustment Overview 83 Stylus C40UX/C40SX/C20UX/C20SX 4. Choose the “Check present data” and click the OK button. Following Check present data menu is displayed. Click the OK button, then readout data is displayed. Revision B 5. Figure 5-8. Read out the Head ID from the EEPROM Adjustment Choose the “Change data” item in the Head ID input menu and click the OK button. Following Head ID input menu is displayed. Input a 6-digit code of the Head Voltage ID in the following menu. Figure 5-9. Entering the 6-digits Head ID 6. When the Head ID is input and writes to the EEPROM, the message is displayed on the bottom column in the menu. Overview 84 Stylus C40UX/C40SX/C20UX/C20SX Revision B 5.1.6 Bi-D You perform this adjustment to correct differences in printing positions, which is caused by incorrect of printing timing in right and left directions during the Bidirectional printing. Therefore, you are required to perform this adjustment after performing the following operations. Replacing the Print mechanism Replacing the main board Replacing the CR motor Figure 5-11. Bi-d adjustment pattern Replacing the Printhead 1. NOTE: As shown in the sample, gaps between passes are sometimes created in different directions among patterns. This unexpected change in direction is caused by an ink jet printer-specific reason, which is an ink jet printer inevitably performs a periodical cleaning specified by the flashing timer even during Bi-D pattern printing, so that the printing direction suddenly changes. However, this directional difference among Bi-D patterns should not be considered, and you can always confirm and adjust the pattern correctly by referring to gap amount only. Choose the “Bi-D” in the “Adjustment menu” as following figure. 3. Click the “Previous” and go back to the “BI-Directional Adjustment” menu. And choose the “Adjust” menu and click the “OK” button. 4. Check the printed pattern and find the misaligned dot type. Choose the misaligned dot size in the following menu and click the “OK” button. Figure 5-10. Choose the Bi-d adjustment 2. Choose the “Print the Bi-d adjustment pattern” in the “Bi-Directional Adjustment pattern” and click the “OK” button. Figure 5-12. Choose the misaligned dot size Adjustment Overview 85 Stylus C40UX/C40SX/C20UX/C20SX 5. Revision B By choosing the misaligned dot size, following input menu for the adjustment value is displayed. Check the printed pattern again and Input the suitable value in the following menu and click the “OK” button. The input value is written in the specific address of the EEPROM. 5.1.7 USB ID When you replace the main board with a new one, you have to input the USB ID newly into the specific address of the EEPROM. When the Printer and the PC are connected with a USB cable, the USB port driver loads the unique code from the specific address of the printer’s EEPROM and the provides the USB port number to the unique code. The USB port driver controls the several USB ports under the Windows 98 environment. A unique code called USB ID is input to the specific address of the EEPROM in our manufactory and the following total 18-digit code is used as a USB ID for the EPSON ink jet printer. Factory line number (3-digit) PC number (2-digit) Input year/month/date/time (hour, minutes, second) (12-digit) The timer data of the PC is used for this input data. Number 0 A “0” is automatically added for the last digit in the input program. Figure 5-13. Bi-d adjustment input menu 6. To confirm if the adjustment value is suitable, click the “Previous” button and go back to the “Bi-Directional Adjustment” menu. Choose the “Print the Bi-D adjustment patter” and click the “OK” button. Adjustment In repair activity, we use a 10-digit code of the Serial number for a USB ID. The remaining 8digits code is generated in the adjustment program and added to the serial number automatically. Overview 86 Stylus C40UX/C40SX/C20UX/C20SX Revision B 2. C A U T IO N 1. In case the USB ID is not input in the adjustment program after the main board is replaced to new one, the USB ID may not possibly unique one. In this case, the USB ID conflicts another peripheral USB ID in the USB port driver and the another USB peripheral may not possibly be used with the USB. Choose the “Input USB ID” and click “OK” button in the “USB ID check/Input” menu. Following menu is displayed. Choose the “USB ID input” in the Adjustment menu. Figure 5-15. Choose the USB ID input menu 3. Figure 5-14. Choose the USB ID input menu Adjustment Check the 10digits code of the serial number on the serial number label stuck around the rear side of the Upper housing. Input the 10digits code of the serial number in the input menu and click “OK” button. NOTE: Even though you input irresponsible another 10digits code and click the “OK” button, the program allow to input the code and write down it the specific address of the EEPROM. But, there is a possibility that the code is not unique and the code conflicts another USB ID in the USB port driver. Overview 87 Stylus C40UX/C40SX/C20UX/C20SX Revision B 2. 5.1.8 Top margin Choose the “Print the Top margin” in the “Top margin adjustment” and click the “OK” button. This function can be used to change the top margin value. You are required to perform this adjustment after performing the following operations. Removing or replacing the ASF unit. Removing or replacing the LD unit. Replacing the Printer mechanism Replacing the main board 1. Choose the “Top margin” in the Adjustment menu. Figure 5-17. Top margin adjustment pattern 3. Check that the printed horizontal line is in 2.6mm ~ 7.2mm from the top of the paper. If it is out of the specific range, perform the Top Margin adjustment by the following procedure. 4. When adjusting the top margin, select “Adjust” from “Top margin adjustment”, the click the “OK” button. Figure 5-16. Choose the Top margin menu Adjustment Overview 88 Stylus C40UX/C40SX/C20UX/C20SX 5. Revision B The selected value is stored in EEPROM after you select the adjustment value and click 5.1.9 Head cleaning This printhead cleaning is CL1’ and about 1/8 of the brand-new black I/C and 1/17 of the brand-new color I/C are consumed. Before use this function, check the remaining ink amount of the both I/C by using the “Get status” function. 1. Choose the “Head cleaning” in the Maintenance menu. Figure 5-18. Top margin adjustment input menu 6. When checking the adjusted top margin, return to the previous screen by pressing the “Previous” button, then select “Print the Top Margin” and click the “OK” button. Figure 5-19. Choose the Head cleaning menu 2. Adjustment Overview Click the “OK” button in the menu. The powerful cleaning is performed. 89 Stylus C40UX/C40SX/C20UX/C20SX Revision B 5.1.10 Initial ink charge 5.1.11 Refurbishment for DOA After you replaced any of the following units, perform initial ink charge and return the printer after making sure that ink is ejected correctly from the printhead. If you clean the cavity of the printhead and cap assembly, this function will be useful. After replacing the printer mechanism C A U T IO N After carry out this function, replace the waste drain ink pad After replacing or removing the printhead C A U T IO N Before you perform the initial ink charge operation, replace the installed cartridges with new ones, because the ink amount used for the initial ink charge operation is so large. 1. Choose the “Initial ink charge” in the Maintenance menu. 1. with new one and reset the Waste drain ink pad counter. Otherwise, the ink or S46 liquid may leak from the pad during the transportation. Prepare the following tool. *Dummy ink cartridge, Injector, S46 liquid Do not carry out this program repeatedly. This operation is available only one time. Excessive operation causes overflow of the ink and S46 liquid. When you refurbish the repair product by using this program, do it on your responsibility. When you charge S46 liquid into the dummy ink cartridge with the Injector, make sure fill out the dummy ink cartridge with S46 liquid. In case enough S46 liquid is not charged into the dummy cartridge, the printhead will not cleaned and not filled with the S46 liquid enough in this operation. Keep the S46 liquid and the dummy ink cartridge clean. Choose the “Refurbishment for DOA” in the Maintenance menu. Figure 5-20. Choose the Initial Ink Charge menu 2. Click the “OK” button in the menu. The initial ink charge is performed. NOTE: As described in the menu message, about 1/4 amount of the Black ink cartridge and 1/9 amount of the Color ink cartridge are consumed in the initial ink charge operation. Adjustment Figure 5-21. Choose the Refurbishment for DOA menu Overview 90 Stylus C40UX/C40SX/C20UX/C20SX 2. Set the dummy cartridge in the printer using the ink replacement function. 3. Select “Yes” under “Item,” then click the “OK” button. The “Refurbishment for DOA” function is then executed. Adjustment Revision B Overview 91 Stylus C40UX/C40SX/C20UX/C20SX Revision B 2. 5.1.12 Protection counter check The program allows you to check or clear the current protection counter value (waste ink amount counter). After read the Caution description on the above menu, click the “OK” button in the menu. The present counter value is displayed on the bottom column as following figure. Check the present counter value 1. Choose the “Check the present counter values” in the “Maintenance” menu and click the “OK” button. Figure 5-23. Present counter value 3. If the present counter value is over 5845 points, we recommend you to replace the Waste ink drain pad to new one. Overview 92 Figure 5-22. Choose the Check the present counter value Adjustment Stylus C40UX/C40SX/C20UX/C20SX Revision B Clear the present counter value 1. Choose the “Clear the present counter values” in the “Maintenance” menu and click the “OK” button. C A U T IO N Be sure to replace the installed waste ink pad with a new one after or before you clear the current protection counter value. C H E C K P O IN T The initial value of the Protection counter is differ by destination as bellow: ESP : 0 Excepting ESP: 2940 Figure 5-24. Choose the Clear the present counter value 2. After you read the description on the menu, click the “OK” button. Figure 5-25. Clear the present counter value Adjustment Overview 93 Stylus C40UX/C40SX/C20UX/C20SX Revision B 5.1.13 EEPRON check You can check the EEPROM data or can write the specific data into the specific address of the EEPROM directly even if the printer is error condition. (In case one of the main logic circuit such as CPU, I/F receiver IC, RAM, EEPROM is broken, this function is not available) Select the “EEPROM check” function in the Maintenance menu. The main menu of this function is as following figure. The following two functions are built in this program. Figure 5-27. Check the EEPROM data Change EEPROM data You can change the specific data stored in the specific address of the EEPROM. However, do not use this function except the special case. Careless usage causes any trouble. Figure 5-26. EEPROM check function Check the EEPROM data You can check the specific data stored in the specific address of the EEPROM. Input the specific address with hexadecimal code. Use this function in your analysis usefully. Figure 5-28. Change the EEPROM data Adjustment Overview 94 Stylus C40UX/C40SX/C20UX/C20SX Revision B 5.1.14 EEPROM back up data This function is used when replacing the MAIN board. Using this function, the data on the currently used MAIN board are backed up, then the backed up data can be written to the EEPROM on the new MAIN board after replacement. Figure 5-30. Replace the defective main board with new one C H E C K P O IN T 1. This function may fail. If it fails, replace the MAIN board with a new one, then carry out the specified adjustments in order. 3. The backed up data will be written to the EEPROM on the new MAIN board. Choose the “EEPROM backup data” in the Maintenance menu. Figure 5-29. EEPROM backup data 2. The EEPROM data on the current MAIN board are backed up by clicking the “OK” button. The following message is displayed when the data backup operation is completed. Replace the printer’s MAIN board, then turn the power ON again and click the “OK” button. Adjustment Overview 95 Stylus C40UX/C40SX/C20UX/C20SX Revision B 5.1.15 A4 pattern will print We recommend to use this function to check the repaired product quality in your final stage of your repair. The following 6 items are printed on the check pattern. C H E C K P O IN T The check point for the first black and each color solid pattern (beta pattern 360 x 360dpi normal dot) in the A4 Check pattern is as follows. -Any white line is not observed. -Uneven banding is not observed extremely. The check point for the second Nozzle check pattern (120dpi) is as follows. -Ink is fired from all nozzles. -Uneven banding is not observed extremely. The check point for the third Alignment pattern is as follows. -Each vertical line is printed straight. If any incorrect printing is observed on the A4 Check pattern, perform the head cleaning or bi-d adjustment. If the phenomenon is not improved, replace the printhead or suitable mechanical parts. Figure 5-31. A4 Check pattern C A U T IO N Adjustment Do not print the A4 Check pattern on the EPSON exclusive paper such as Photo quality ink jet paper. This check pattern is for the plain paper. So, use the Plain paper for this check pattern printing. Overview 96 Stylus C40UX/C40SX/C20UX/C20SX Revision B Figure 5-32. A4 Check pattern Adjustment Overview 97 CHAPTER 6 MAINTENANCE Stylus C40UX/C40SX/C20UX/C20SX Revision B 6.1 Overview This section provides information to maintain the printer in its optimum condition. 6.1.1 Cleaning This printer has no mechanical components which require regular cleaning except the printhead. Therefore, when returning the printer to the user, check the following parts and perform appropriate cleaning if stain is noticeable. C A U T IO N Never use chemical solvents, such as thinner, benzine, and acetone to clean the exterior parts of printer like the housing. These chemicals may deform or deteriorate the components of the printer. Be careful not to damage any components when you clean inside the printer. Do not scratch the surface (coated part) of PF roller assembly. Use soft brush to wipe off any dusts. Use a soft cloth moistened with alcohol to remove the ink stain. Do not use cleaning sheet included in the media for normal usage. It may damage the coated surface of PF roller. If the adhesive surface of the cleaning sheet is set to the ASF LD roller side and used to clean the ASF LD roller surface, it is no problem. Exterior parts Use a clean soft cloth moistened with water and wipe off any dirt. If the exterior parts are stained with ink, use a cloth moistened with neutral detergent to wipe it off. Inside the printer Use a vacuum cleaner to remove any paper dust. ASF LD Roller If paper dust on the surface of ASF LD Roller lowers the friction, set the adhesive surface of the cleaning sheet included in the media to the surface of the ASF roller and repeat loading paper from the ASF. Maintenance Overview 99 Stylus C40UX/C40SX/C20UX/C20SX Revision B 6.1.2 Service Maintenance 6.1.3 Lubrication If print irregularity (missing dot, white line, etc.) has occurred or the printer indicates “Maintenance Error”, take the following actions to clear the error. The characteristics of the grease have great affects on the mechanical function and durability, especially does the characteristics about temperature environment. The type and amount of grease used to lubricate the printer parts are determined based on the results of internal evaluations. Therefore, be sure to apply the specified type and amount of grease to the specified part of the printer mechanism during servicing. Head Cleaning: The printer has a built-in head cleaning function, which is activated by operating the control panel. Confirm that the printer is in stand-by state (the POWER indicator is not blinking), and hold down the Error Reset SW on the control panel for more than 3 seconds. The printer starts the cleaning sequence (The POWER indicator blinks during the cleaning sequence). Maintenance Error Clear: Ink is used for the operations such as cleaning as well as printing. Therefore, the printer wastes certain amount of ink and drains it into waste ink pad, while counting the amount of the waste ink. Once the amount of the waste ink reaches the predetermined limit, the printer indicates “Maintenance Error” and the waste ink pad should be replaced. Overflow Counter Limit: Overflow Counter (Protection Counter A) >=8350 C A U T IO N Never use oil or grease other than those specified in this manual. Use of different types of oil or grease may damage the component or give bad influence on the printer function. Never apply larger amount of grease than specified in this manual. Table 6-1. Specified Lubricants Type Name EPSON Code Supplier Grease G-46 1039172 EPSON Grease G-58 T.B.D EPSON Timing for Replacing the Waste Ink Pad: When the total amount of the waste ink reaches the predetermined limit, the LED indicates “Maintenance Error”. Also, during repair servicing, check the ink counter along with the firmware version, ink counter, select code page, nozzle check pattern on the status printing sheet. If the ink counter value is close to its limit, notify your customer and recommend that the waste ink pad be replaced (If the waste ink pad is not replaced at that time, there is a possibility that “Maintenance Error” will occur soon after the printer is returned to the customer). Once you have the confirmation of the customer, replace the waste ink pad. Replacement Procedure: Refer to 4.2.3 Waste ink pad removal After the Replacement: Reset the Overflow Counter (Protection Counter A) : Refer to 5.1.12 Protection counter check Maintenance Overview 100 Stylus C40UX/C40SX/C20UX/C20SX Revision B Table 6-2. Lubrication Type/Point No. Lubrication Type/Point Remarks 1 • Specified area on the Main frame. Refer to Figure 6-1, "Lubrication point 1". • G-58 • 100mg x 4 points • Use a brush to apply it. • After lubrication, move the CR unit left or right and smooth out the grease on the Front frame. 2 • Specified area on the Front frame. Refer to Figure 6-2, "Lubrication point 2". • G-58 • Φ1mm x 200mm • Use a syringe to apply it. • After lubrication, move the CR unit left or right and smooth out the grease on the Front frame. 3 • Specified area on the Paper eject roller. Refer to Figure 6-3, "Lubrication point 3". • G-46 • Φ1mm x 1mm x 9points • Use a syringe to apply it. • After lubrication, turn the Paper eject roller and smooth out the grease on the Paper eject roller. G-58 G-58 Main frame right side view Figure 6-1. Lubrication point 1 Maintenance Overview 101 Stylus C40UX/C40SX/C20UX/C20SX Revision B G-58 200mm Figure 6-2. Lubrication point 2 G-46 Figure 6-3. Lubrication point 3 Maintenance Overview 102 CHAPTER19 7 APPENDIX Stylus C40UX/C40SX/C20UX/C20SX Revision B 7.1 Connector Summary Table 7-1. Connector Summary for C413MAIN/B Connector Function Table to refer to 7.1.1 Major Component Unit CN9 For connection with the Print Head Table 7-5 The Major component units of this printer are as follows. CN2 For connection with the Power supply board Table 7-6 CN1 For connection with the parallel interface Refer to “IEEE-1284 Parallel Interface (Forward Channel)” CN3 For connection with the USB interface Refer to “1.3.1 USB INterface” Main Board (C413MAIN or C413MAIN-B) Power Supply Board (C417/PSE) The figure below shows how these components connect. C417PSB/PSE CN2 AC Power Table 7-2. CN4-HP/PE/IC Sensor C413MAIN/B CN2 CN12 CN9 CN1 Parallel I/F (C413MAIN) CN3 USB I/F (C413MAIN-B) CN7 Pin Signal Name I/O Function 1 SIG In Sensor detect signal 2 GND --- Ground 3 VCC --- Sensor Power Supply CN4 Table 7-3. CN12-CR Monitor Print Head PF Motor CR Motor HP/PE/IC Printer Mechanism Figure 7-1. Connection of the Major Components Pin Signal Name I/O 1 CRA Out Phase drive signal (A) 2 CRB Out Phase drive signal (B) 3 CR-A Out Phase drive signal (-A) 4 CR-B Out Phase drive signal (-B) See the following tables for the connector summary for the C413MAIN/B board and each connector’s pin alignment. Table 7-1. Connector Summary for C413MAIN/B Connector Function Table to refer to CN4 For connection with the HP/PE/IC/sensor Table 7-2 CN12 For connection with the CR motor Table 7-3 CN7 For connection with the PF motor Table 7-4 Appendix Function Table 7-4. CN3-PF Motor Pin Signal Name I/O 1 PFA Out Phase drive signal (A) 2 PFB Out Phase drive signal (B) 3 PF-A Out Phase drive signal (-A) 4 PF-B Out Phase drive signal (-B) Connector Summary Function 104 Stylus C40UX/C40SX/C20UX/C20SX Revision B Table 7-5. CN9-Printhead Pin Signal Name I/O Function 1 THM In 2 CH Out Waveform selection signal for MS shot & variable shot 3 GND --- Ground 4 LAT Out Head data latch pulse output 5 GND --- Ground 6 NCHG Out All nozzle fire selection pulse 7 GND --- Ground 8 SCK Out Serial clock 9 GND --- Ground 10 SI2 Out Print data output (2) 11 SP Out Select signal for CH signal 12 SI1 Out Print data output (1) 13 VDD --- Logic power supply (+5V) 14 GND9 --- Ground 15 COM --- Head drive pulse (trapezoid waveform) 16 VHV --- +42V power supply for nozzle selector Thermistor detect signal Table 7-6. CN2-Power Supply Board Pin Signal Name I/O 1 PSC Out Power supply switch output signal 2 GND --- Ground 3 +42V --- Mechanism driven power supply 4 GND --- Ground 5 +5V --- Logic power supply Appendix Function Connector Summary 105 Stylus C40UX/C40SX/C20UX/C20SX Revision B 7.2 EEPROM Address Map Table 7-7. EEPROM Address Map Address Explanation Setting QPIT setting Factory setting 00H 00H 00H 00H 00H 00H 00H 00H 00H 00H 04H 04H*a 00H (*1)*e 00H (*1)*e 00H 00H 00H 00H 00H 00H 0FH 00H 00H 10H | 13H 00H | 00H 00H | 00H 00H | 00H 00H | 00H Table 7-7. EEPROM Address Map Address 00H 01H 02H 03H Appendix Explanation Ink flag 1 Ink flag 2 CL time QPIT setting Factory setting 04H Bit7: CSIC Disable Bit6: black one-time Bit5: color one-time Bit4: Initial charge required Bit3: Reserved Bit2: ink cleaning seq. Bit1: black CL required Bit0: color CL required 00H 10H 06H Bit7: Printed after Cleaning 0:Not printed after Cleaning 1:Printed after Cleaning Bit6: Black 1st Ink Cartridge Bit5: Color 1st Ink Cartridge Bit4: Bk CSIC changed Flag1 Bit3: YMC CSIC changed Flag1 Bit2: YMC cartridge change and cleaned 0:first cartridge 1:changed Bit1: Black cartridge change and cleaned 0:first cartridge 1:changed Bit0: Black cartridge change and cleaned 0:with YMC cartridge 1:alone 00H Setting CPU Time 05H 07H accumulated printing time 08H Intial Charge Counter 09H 04mode I/F Bit7:I/F Control Flag Bit6: Bit5:Reserved Bit4: 00H Bit3:D4mode USB Bit2: Bit1:D4mode Parallel Bit0: 0AH Ink counter A0 0BH 0CH Ink counter Rb0 0DH 0EH 00H 00H 00H 00H 14H | 17H EEPROM Address Map Ink counter Ry0 Ink counter Cy 106 Stylus C40UX/C40SX/C20UX/C20SX Revision B Table 7-7. EEPROM Address Map Address Explanation 18H | 1BH Ink counter Cm 1CH | 1FH Ink counter Cc Setting QPIT setting Factory setting 00H | 00H 00H | 00H 00H | 00H 00H | 00H Address Explanation Setting QPIT setting Factory setting 2BH Bi-D Adjustment for ND Cl shift Value -72<=n<=+72 Units 1/1440inchWorkaround;Bi 00H (*1) 2CH Reserved 00H 00H 2DH Manufacturer setting 00H (*1)*d 2EH Reserved 00H 00H 2FH Reserved 00H 00H 30H Interface selectionow Bit7, 6, 5, 4: Reserved Bit3: USB Bit2: Reserved Bit1: Parallel Bit0: Auto 00H 00H data in 00h - 1Fh are written to EEPROM at NMI Address Explanation Setting QPIT setting Factory setting Bit7: Name mode Bit6: Bit5: Customer name | Bit0: 20H | 23H Ink counter Clm 000H | 000H 000H | 000H 24H | 27H Ink counter Clc 00H | 00H 00H | 00H 31H Interface timeoutParall 0 to 255 (by second, value of 0 means 10seconds). 00H 00H 28H ERROR Code 00H 00H 32H I/F SpeeddIn 00H 00H 29H Production flag 01H 01H (*1) Bit7: Reserved Bit6: Bit5: Reserved Bit4: Bit3: ECP speed Bit2: Bit1: Compatibility speed Bit0: 33H Bi-D Adjustment 1 (for Multishot1)ility speed -72<=n<=+72(by 1/2880inch) 00H (*1) 34H Bi-D Adjustment 2 (for Multishot2) -72<=n<=+72(by 1/2880inch) 00H (*1) Bit7:dummy flag Bit6:Reserved Bit5: Bit4: Bit3: Bit2: Bit1: Bit0:Change of the model*c 1:for Model-1 0:for Model-2 2AH Appendix Bi-D Adjustment 4 for ND BK shift Value -72<=n<=+72 Units 1/1440inchWorkaround;Bi 00H (*1) EEPROM Address Map 107 Stylus C40UX/C40SX/C20UX/C20SX Address Explanation Revision B Setting Factory setting Address Explanation 00H (*1) 47H Head Actuator Rank ID for IwB 48H Setting QPIT setting Factory setting +30<=n<=+70 00H (*1) Head Actuator Rank ID for IwC +30<=n<=+70 00H (*1) 49H Head Actuator Rank ID for IwM +30<=n<=+70 00H (*1) 35H Bi-D Adjustment 3 (for Variable shot) 36H Reserved 00H 00H 37H Reserved 00H 00H 38H Reserved 00H 00H 39H 1stDot Position Adjustment 00H (*1) 4AH Head Actuator Rank ID for IwY +30<=n<=+70 00H (*1) 3AH CL2 Counter KKd-7 00H 03H 4BH +30<=n<=+70 00H (*1) 3BH Total Timer CL Counter 00H 00H Head Actuator Rank ID for IwLC 4CH +30<=n<=+70 00H (*1) Printer For CSIC 00H Head Actuator Rank ID for IwLM 00H (*1) 00H Same as the settings 00H - 3CH -72<=n<=+72(by 1/2880inch) QPIT setting -72<=n<=+72 (by 1/2880inch) 89H:World 09H:Japan 3DH 3EH CSIC1_InkName1; CSIC2_InkName1; 3FH Head Actuator Rank ID for VhN +1<=n<=+32 40H Head Actuator Rank ID for VhM +1<=n<=+37 00H (*1) 41H Head Actuator Rank ID for VhL +1<=n<=+34 00H (*1) 42H Head Actuator Rank ID for VhV +1<=n<=+34 00H (*1) 43H Head Actuator Rank ID for VhU +1<=n<=+40 00H (*1) 44H Head Actuator Rank ID for VhM2 +1<=n<=+34 00H (*1) 45H Head Actuator Rank ID for VhB +1<=n<=+34 00H (*1) 46H Head Actuator Rank ID for AR 0<=n<=+6 00H (*1) Appendix 00H 00H 00H (*1) 4DH-5EH USB IDdHe 5FH Market ID 60H-7DH Model NamedHe Stylus C40 :00Hor 01H Stylus C20 :02Hor 03H Custom :04H 7EH PassworddHe 55H - 7FH PassworddHe 33H - *1 : Adjusted at factory EEPROM Address Map 108 Stylus C40UX/C40SX/C20UX/C20SX Revision B Customer name *a : D4mode setting (EEPROM 09H) USB Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 Customer name 0 0 0 0 Bit3 Bit2 D4mode 0 0 0 0 Auto 0 0 0 0 0 1 Acer 0 1 On 0 0 0 0 1 0 Apple 1 0 Off 0 0 0 0 1 1 Compaq 0 0 0 1 0 0 Dell 0 0 0 1 0 1 eMachines 0 0 0 1 1 0 Fujitsu 0 0 0 1 1 1 Hewlett-Packard 0 0 1 0 0 0 IBM 0 0 1 0 0 1 Gateway 0 0 1 0 1 0 NEC 0 0 1 0 1 1 Panasonic Parallel Bit1 Bit0 D4mode 0 0 Auto 0 1 On 1 0 Off *c: Model 1 and model 2 show the following product. Model-1: EPSON Stylus C20SX , EPSON Stylus C20UX Model-2: EPSON Stylus C40SX , EPSON Stylus C40UX Sharp *d: Manufacturer and Description name show the following setting. 0 0 1 1 0 0 Sony 0 0 1 1 0 1 Toshiba 0 0 1 1 1 1 PHILIPS Name mode Bit7 Bit6 Name mode 0 0 Ineffective 0 1 Apply to the Description and Manufacturer. 1 0 Apply to the Description. 1 1 ReserveddAp Appendix *e: 0AH and 0BH are factory setting for Market specification. Market EEPROM address EEPROM setting Total print volumes 10,000 Pages (Except for ESP specification) 0A 0B 0B 7C Total print volumes 20,000 Pages (ESP specification) 0A 00 0B 00 EEPROM Address Map 109 Stylus C40UX/C40SX/C20UX/C20SX Revision B 7.3 Component Layout Figure 7-2. C413MAIN component layout Figure 7-3. C413MAIN-B component layout Appendix Component Layout 110 Stylus C40UX/C40SX/C20UX/C20SX Revision B Figure 7-5. C417PSE component layout Figure 7-4. C417PSB component layout Appendix Component Layout 111 Stylus C40UX/C40SX/C20UX/C20SX Revision B 7.4 Parts List Table 7-8. parts list Table 7-8. parts list Ref No. Description 601 "POROUS PAD,TUBE,STOPPER" Ref No. Description 602 "SHIELD PLATE,M/B" 100 "HOUSING,UPPER,USB" 603 "C.B.P-TITE SCREW,3X8,F/ZN" 101 "COVER,PRINTER,USB" 604 C.B.S. SCREW(B300204211) 102 PAPER SUPPORT 700 EDGE GUIDE 103 STACKER 701 HOPPER 104 LOGO PLATE 10X40;C 702 "PAD,HOPPER" 105 "BUTTON,SW" 703 "COMPRESSION SPRING,2.50" 200 "BOARD ASSY.,MAIN" 704 "FRAME,ASF" 300 "POWER SUPPLY ASSY.,C413,ASP;120V" 705 "HOLDER,PAD" 500 PRINTER MECHANISM(ASP)MA410-101 706 "PAD,LD;D" 501 PRINT HEAD 707 "TORSION SPRING,29.1" 502 "HOLDER,I/C" 708 C.B.S. SCREW(B300204211) 503 "COVER CARTRIDGE,BK" 709 "C.B.P-TITE SCREW,3X8,F/ZN" 504 "COVER CARTRIDGE,C" 710 "C.B.S-TITE(P4),3X6,F/ZN" 505 "CABLE,HEAD" 01 INDIVIDUAL CARTON BOX FOR AMERICA 506 "SHEET,PROTECT,CABLE HEAD" 03 "PAD,PRINTER" 507 "MOUNTING PLATE,M/B,ES2" 04 "PAD,ACCESSORY" 508 "HOLDER,SHAFT ASSY.,C413,ASP" 05 "PLASTIC PROTECTIVE BAG,360X680X0.03T" 509 "MOTOR ASSY.,CR" 06 PLASTIC PROTECTIVE BAG 180X260X0.03T 510 "HOUSING,LOWER" 07 "PAD,CR" 511 FOOT NON FIG "INK CARTRIDGE,B,OVERSEAS,AS" 512 "FRAME,FRONT ASSY.,C413,ASP" NON FIG "INK CARTRIDGE,C,OVERSEAS,AS" 513 C.B.S. SCREW(B300204211) 600 "POROUSPAD,INKEJECT" Appendix Parts List 112 Stylus C40UX/C40SX/C20UX/C20SX Revision B 7.5 Exploded Diagram Following pages shows exploded diagram. 104 105 100 102 101 103 Figure 7-6. Stylus C40UX/C40SX/C20UX/C20SX Exploded Diagram 1 Appendix Exploded Diagram 113 Stylus C40UX/C40SX/C20UX/C20SX Revision B for 220V for 120V 300 except ETT 200 400 forEURO,EAI(220V),ASIA(220V), EAL,RUSSIA Figure 7-7. Stylus C40UX/C40SX/C20UX/C20SX Exploded Diagram 2 Appendix Exploded Diagram 114 Stylus C40UX/C40SX/C20UX/C20SX Revision B 508 503 B 507 D 506 505 504 C 501 A 513 X 2 502 513 509 F 511 513 512 500 510 511 511 511 SOFigure S 7-8. S C C40UX/C40SX/C20UX/C20SX C S C C S Exploded Diagram 3 Stylus Appendix Exploded Diagram 115 Stylus C40UX/C40SX/C20UX/C20SX Revision B 604 604 604 604 604 602 603 600 601 Figure 7-9. Stylus C40UX/C20UX Exploded Diagram 4 Appendix Exploded Diagram 116 Stylus C40UX/C40SX/C20UX/C20SX Revision B 604 605 605 604 604 602 603 600 601 Figure 7-10. Stylus C40SX/C20SX Exploded Diagram 4 Appendix Exploded Diagram 117 Stylus C40UX/C40SX/C20UX/C20SX Revision B 700 701 704 702 710 703 705 706 708 707 709 Figure 7-11. Stylus C40UX/C40SX/C20UX/C20SX Exploded Diagram 5 Appendix Exploded Diagram 118 Stylus C40UX/C40SX/C20UX/C20SX Revision B 7.6 Electrical Circuits See the following pages for the electric circuit diagrams below: C413MAIN control circuit board C413MAIN-B control circuit board C413MAIN-C control circuit board C413MAIN-D control circuit board C413PSB power supply circuit board C413PSE power supply circuit board Appendix Electrical Circuits 119
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