SERVICE MANUAL Color Inkjet Printer Stylus C41/42/43/44 series ® SEIJ01011
Notice V 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. V 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.
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.
TPCS Quality Assurance Department 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.
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 March 29. 2002 B January 20. 2003 Description First Release The model name (Stylus C43/C44 series) is added.
CONTENTS Chapter 1 PRODUCT DESCRIPTION 1.1 FEATURES ......................................................................................................... 9 1.1.1 Model ......................................................................................................... 10 1.1.2 Differences between the Stylus C41/C42 series and the Stylus C40/C20 . 10 1.2 OPERATOR CONTROLS .............................................................................. 1.2.1 Operate Switch .............................
CHAPTER PRODUCT DESCRIPTION
Stylus C41/42/43/44 series Revision B V Parallel Interface 1.1 FEATURES EPSON Stylus C41SX .EPSON Stylus C42SX The main feature of this printer is described in the following table; V USB Interface Table 1-1. Feature - 1 Item EPSON Stylus C41UX .EPSON Stylus C42UX Description Table 1-2. Feature - 2 monochrome : 48 nozzles Item Printhead color : 15 nozzles x 3 (Cyan, Magenta, Yellow) Maximum resolution Description Acoustic noize Level :Approx.
Stylus C41/42/43/44 series Revision B 1.1.1 Model Table 1-5. Ink cartridge type Models The model names are also descriminated by market as followings; Stylus C41/C42 series Table 1-3. Model name Model name Ink cartridge type Stylus C40/C20 Market Stylus C41 Mainly Asia & Pacific market Stylus C42 Mainly American & European market Stylus C42Plus Printer cover : purple CSIC No CSIC USB The Stylus C4xUX/C2xUX are adopting USB 2.0 interface. 1.1.
Stylus C41/42/43/44 series Revision B 1.2 OPERATOR CONTROLS 1.2.4 Printer Condition and Panel Status Indicators 1.2.1 Operate Switch Printer status Operate switch is located on the control panel. Power ON condition Powe Error Priority On - 10 1.2.2 Control Panel Ink sequence Blink - 6 V 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.
Stylus C41/42/43/44 series Revision B 1.2.5 Errors V Ink out 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. V Paper out When printer fails to load a sheet, it goes paper out error. V Paper jam When printer fails to eject a sheet, it goes paper jam error.
CHAPTER DISASSEMBLY AND ASSEMBLY
Stylus C41/42/43/44 series Revision B 2.1 Overview 2.1.1 Precautions This section describes procedures for disassembling the main components of the Stylus C41/C42 series. 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”.
Stylus C41/42/43/44 series W A R N IN G T T T T T C A U T IO N C A U T IO N Revision B 2.1.2 Tools 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.
Stylus C41/42/43/44 series Revision B 2.1.3 Screws Table 2-2. No. Name and Specification 1 CBS 3x6 2 CBP 3x8 3 CBS (P2) 3x6 4 CBS 3x8 5 C.P.F.
Stylus C41/42/43/44 series Revision B 2.1.4 Work Completion Check Table 2-3. 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 2-3.
Stylus C41/42/43/44 series Revision B 2.2 Disassembly 2.2.1 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 18 Move the edge guide to the right until it stops moving. Make sure the edge guide is in the upper housing’s notch position.
Stylus C41/42/43/44 series 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 2-4. Removing the side hook 4. Remove the 3 hooks at the back using a (-) screwdriver or similar tool. Figure 2-3. Removing the front hook Figure 2-5.
Stylus C41/42/43/44 series Revision B 2.2.2 ASF unit removal 1. Remove the upper housing. (Refer to Section 2.2.1) 2. Take out the three screws. CBP 3×8 3 1 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. CBS (P2) 3×6 2 CBP 3×6 Figure 2-6. Removing the ASF unit 3. Pull the ASF unit toward the rear and remove it. T When installing the ASF unit, install the spring in the guide, then install it while supporting it by hand. Figure 2-7.
Stylus C41/42/43/44 series Revision B 2.2.3 Waste ink pad removal 1. Remove the upper housing. (Refer to Section 2.2.1) 2. Remove the ASF unit. (Refer to Section 2.2.2) 3. Remove the Waste ink pad. tube stopper 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. T Waste ink counter reset operation. ( Section 3.1.13 on page 48.) Waste ink pad Figure 2-8.
Stylus C41/42/43/44 series Revision B 2.2.4 PS unit removal T 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 2.2.1) 2. Remove the ASF unit. (Refer to Section 2.2.2) 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 2-11. Reassembling the PS unit C.B.
Stylus C41/42/43/44 series Revision B 4. 2.2.5 Paper eject roller removal 1. Remove the upper housing. (Refer to Section 2.2.1) 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 2-14. Take out the screw 5. Return the carriage to the home position, then remove the Front Frame. Figure 2-13. Releasing the carriage lock 3. Move the carriage to the center. Front Frame Figure 2-15.
Stylus C41/42/43/44 series 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 T 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 2-16. Releasing the claw extending 7.
Stylus C41/42/43/44 series Revision B 3. 2.2.6 Paper Guide Upper/Left removal C A U T IO N 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 2.2.1) 2.
Stylus C41/42/43/44 series 1. Revision B Insert the tip of the spring to the Paper Guide. 3. Figure 2-21. Setting the spring to the Paper Guide 2. Assemble the Paper Guide Upper/Left to the Main Frame. Figure 2-23. Assembling the Paper Guide 1 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.
Stylus C41/42/43/44 series 5. Revision B Eject the OHP sheet from the printer by rotating the protrusion of the Paper Eject roller gear in CW direction. 2.2.7 MAIN board removal 1. Remove the upper housing. (Refer to Section 2.2.1) 2. Remove the ASF unit. (Refer to Section 2.2.2) 3. Remove the PS unit. (Refer to Section 2.2.4) 4. Remove the three screws, then remove the shield cover. Protrusion Figure 2-25.
Stylus C41/42/43/44 series Revision B 5. Disconnect the four connectors (CN9, CN4, CN7, CN12). USB Type CBS 3×6 CBS 3×8 CN9 CN4 CN7 CN12 Figure 2-27. Disconnecting the connectors Parallel Type 6. Take out the 1 screw. (Refer to Figure 2-27.) 7. Lift the MAIN board up and remove it. C.P.F.S-Tight 3×12 Tightening Torque for screw T USB Type - C.B.S 3x6 screw - C.B.S 3x8 screw T Parallel Type - C.B.S 3x6 screw - C.P.F.S-Tight 3x12 screw - C.B.S 3x8 screw CBS 3×6 : 9+/-1 kgf.cm : 9+/-1 kgf.
Stylus C41/42/43/44 series Revision B 2.2.8 Printhead unit removal A D J U S T M E N T R E Q U IR E D When replacing the Main board with a new one, perform the following service items. T 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.
Stylus C41/42/43/44 series Revision B FFC T When reassembling the CR motor, it contact the lib of Main frame after turning clockwise. Carriage unit CSIC board connector lib Figure 2-30. Disconnecting the FFC 7. Release the two hook, fixing between the Printhead unit and carriage cover, on the both sides of the carriage unit, then pull the unit forward and remove the cover. Figure 2-29. Reassembling the CR motor T Tightening Torque for screw - C.B.S 3x6 screw 6. : 9+/-1 kgf.
Stylus C41/42/43/44 series Revision B T 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 Printhead unit Figure 2-32. Removing the Printhead unit 9. 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 3-1. 1.
Stylus C41/42/43/44 series Revision B 2.2.9 LD unit removal T When reassembling the LD unit, make sure that seven hooks are 1. Remove the upper housing. (Refer to Section 2.2.1) 2. Remove the ASF unit. (Refer to Section 2.2.2) 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 2-36. Setting seven hooks Cables A D J U S T M E N T R E Q U IR E D Figure 2-34. Disconnecting the Cables 5.
CHAPTER ADJUSTMENT
Stylus C41/42/43/44 series Revision B 3.1 Overview This section describes the procedure for adjustments required when the printer is disassembled and assembled for repair or service. 3.1.1 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 3-1.
Stylus C41/42/43/44 series Revision B 2. 3.1.2 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. V Model name (Stylus C41UX/41SX/42UX/42SX) For the Stylus C41UX, select Model name “Stylus C41UX.” V Interface setting (LPT1, LPT2, LPT3, EPUSB1, EPUSB2, EPUSB3) 1. When you run this program, the following menu appears.
Stylus C41/42/43/44 series Revision B The user interface of the main menu on this program is shown below. 3.1.3 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.
Stylus C41/42/43/44 series Revision B V 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.
Stylus C41/42/43/44 series Revision B 3.1.4 EEPROM initial setting This function is used when replacing the MAIN board. 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. Figure 3-7. EEPROM initial setting (2) Figure 3-6. EEPROM initial setting (1) 2. Click the “OK” button, then the initial setting values are written to the MAIN board. If choose “Check“, the destination setting will be appera.
Stylus C41/42/43/44 series Revision B 4. 3.1.5 Head ID This adjustment function is required when any of the following parts is replaced. 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. V Printhead V Main board V Printer mechanism This adjustment function enables you to write printhead Voltage ID into the specific address of the EEPROM.
Stylus C41/42/43/44 series 6. Revision B When the Head ID is input and writes to the EEPROM, the message is displayed on the bottom column in the menu. 3.1.6 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.
Stylus C41/42/43/44 series Revision B Figure 3-12. Bi-d adjustment pattern Figure 3-13. Choose the misaligned dot size 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.
Stylus C41/42/43/44 series Revision B 3.1.7 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. Figure 3-15.
Stylus C41/42/43/44 series C A U T IO N 1. Revision B T In case the USB ID is not input in the adjustment program after 2. Choose the “Input USB ID” and click “OK” button in the “USB ID check/Input” menu. Following menu is displayed. 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.
Stylus C41/42/43/44 series Revision B 3.1.8 First Dot Position This Adjustment revises gap of left margin ( Print start position) of post card printing and A4 printing. 5. Press [OK] button after confirming. 6. Repeat above 2 to 5 and adjust so that left margin will be 3+/-1.5mm. T While warming up (Power LED blinking condition),Program can not be executed (communication error happens). Execute program on condition that Printer power LED is turning on.
Stylus C41/42/43/44 series Revision B 2. 3.1.9 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. T Removing or replacing the ASF unit. T Removing or replacing the LD unit. T Replacing the Printer mechanism Figure 3-21. Top margin adjustment pattern T Replacing the main board 1.
Stylus C41/42/43/44 series Revision B 3.1.10 Head cleaning 3.1.11 Initial ink charge 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. 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. 1.
Stylus C41/42/43/44 series Revision B 3.1.12 Refurbishment for DOA If you clean the cavity of the printhead and cap assembly, this function will be useful. C A U T IO N 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. T After carry out this function, replace the waste drain ink pad T T T T T 1. 2. with new one and reset the Waste drain ink pad counter.
Stylus C41/42/43/44 series Revision B 2. 3.1.13 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 3-26.
Stylus C41/42/43/44 series Revision B Clear the present counter value 1. Choose the “Clearning the present counter values” in the “Ptotection counter 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: T ESP : 0 T Excepting ESP: 2940 Figure 3-27.
Stylus C41/42/43/44 series Revision B 3.1.14 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.
Stylus C41/42/43/44 series Revision B 3.1.15 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 3-33. 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.
Stylus C41/42/43/44 series Revision B 3.1.16 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 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.
Stylus C41/42/43/44 series Revision B Figure 3-35.
CHAPTER MAINTENANCE
Stylus C41/42/43/44 series Revision B 4.1 Overview 4.1.2 Service Maintenance This section provides information to maintain the printer in its optimum condition. If print irregularity (missing dot, white line, etc.) has occurred or the printer indicates “Maintenance Error”, take the following actions to clear the error. V Head Cleaning: 4.1.1 Cleaning The printer has a built-in head cleaning function, which is activated by operating the control panel.
Stylus C41/42/43/44 series Revision B 4.1.3 Lubrication Table 4-2. Lubrication Type/Point 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.
Stylus C41/42/43/44 series Revision B G-58 G-58 200mm Figure 4-2. Lubrication point 2 G-58 Main frame right side view Figure 4-1. Lubrication point 1 G-46 Figure 4-3.
CHAPTER APPENDIX
Stylus C41/42/43/44 series Revision B 5.
