Epson Stylus C40UX Service Manual
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Epson Stylus C40UX Service Manual

Epson Stylus C40UX Service Manual

Color inkjet printer
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SERVICE MANUAL

Color Inkjet Printer
Stylus C40UX/C40SX/C20UX/C20SX
®
SEIJ01002

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Summary of Contents for Epson Stylus C40UX

  • Page 1: Service Manual

    SERVICE MANUAL Color Inkjet Printer Stylus C40UX/C40SX/C20UX/C20SX ® SEIJ01002...
  • Page 2 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.
  • Page 3 REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTIFIED REPAIR TECHNICIAN. 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.

  • Page 4: Product Description

    Provides preventive maintenance procedures and the related to a specific subject, or comment on the results achieved through a previous action. lists of Epson-approved lubricants and adhesives required for servicing the product. I.ndicates an operating or maintenance procedure, practice or...

  • Page 5: Disassembly And Assembly

    Revision Status Revision Issued Date Description May 31. 2001 First Release 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. July 10.

  • Page 6: Table Of Contents

    CONTENTS Chapter 1 PRODUCT DESCRIPTION 1.7 INK CARTRIDGE ................... 23 1.7.1 Black Ink Cartridge ................... 23 1.1 FEATURES ......................9 1.7.2 Color Ink Cartridge ..................23 1.2 Differences between the Stylus C20 and the Stylus C40 ......... 9 Chapter 2 Operating Principles 1.3 SECIFICATIONS .....................
  • Page 7 4.1.2 Tools ......................59 6.1.3 Lubrication ....................100 4.1.3 Screws ......................59 4.1.4 Work Completion Check ................60 Chapter 7 Appendix 4.2 Disassembly ....................... 61 7.1 Connector Summary ..................104 4.2.1 Upper housing removal ................61 7.1.1 Major Component Unit ................104 4.2.2 ASF unit removal ..................

  • Page 8: Chapter 1 Product Description

    C H A P T E R PRODUCT DESCRIPTION...

  • Page 9: Features

    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 EEPROM 29 <H> bit 0 value Model...

  • Page 10: Secifications

    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. Figure 1-1. Stylus C40/C20 Dimensions Typeface* Bit map LQ font :EPSON Courier 10 CPI...

  • Page 11: Paper Feeding

    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...

  • Page 12: Envirormental Condition

    Stylus C40UX/C40SX/C20UX/C20SX Revision B 1.3.6 Envirormental Condition 1.3.8 Safety Approvals Temperature : 10 to 35 ºC (operating *3 ) 120 V version : : -20 to 60 ºC(non-operating, *1) Safety standards : UL1950 with D3 1 month at 40 ºC 120 hours at 60 ºC...

  • Page 13: Interface

    Interface specification for each model are as the following. Synchronization : By STROBE pulse Parallel Interface :EPSON Stylus C40SX .EPSON Stylus C20SX USB Interface :EPSON Stylus C40UX .EPSON Stylus C20UX Handshaking : By BUSY and ACKNLG signal *This printer interface as standard.
  • Page 14 Stylus C40UX/C40SX/C20UX/C20SX Revision B Connector pin assignment and signals : Parameter Minimum Maximum Parameter Minimum Maximum Signal Name Pin No. GND pin In/Out Functional description Return tsetup 500 ns treply The strobe pulse. Read-in of data is -STROBE thold 500 ns...

  • Page 15: Parallel Interface (Reverse Channel)

    Stylus C40UX/C40SX/C20UX/C20SX Revision B Signal Name ReturnG Pin No. GND pin In/Out Functional description Pin No. Signal Name Functional description Return ND Pin Out* Chassis GND Chassis GND. DATA0 The DATA0 through DATA7 signals represent data bits 0 to 7, respectively.

  • Page 16: Prevention Hosts From Data Transfer Time-Out

    Stylus C40UX/C40SX/C20UX/C20SX Revision B Extensibility Request : 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 The printer responds affirmatively when the extensibility request values are 00H buffer is full.

  • Page 17: Ieee1284.4 Protocol

    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.

  • Page 18: Operator Controls

    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 Powe Error Priority Operate switch is located on the control panel. Power ON condition Ink sequence Blink 1.5.2 Control Panel Ink Cartridge change mode...

  • Page 19: Printer Initialization

    Stylus C40UX/C40SX/C20UX/C20SX Revision B 1.5.5 Printer Initialization 1.5.6 Errors Ink out There are three kinds of initialization method. When the printer runs out the most part of the ink of any one color, it warns ink- (1) Power-on initialization low and keeps printing.When the printer runs out the whole ink of any one color, it This printer is initialized when turning the printer power on, or printer recognized stops printing and indicates ink-out error.

  • Page 20: Paper

    Do not perform reverse feed more than 0 mm(0”). Exclusive paper 1.6.2 Paper Specification Quality : EPSON Exclusive paper Cut Sheet * Transparency printing is only available at normal temperature. Size : A4 (Width 210 mm(8.3") x Length 297 mm(11.7")) <...

  • Page 21: Printing Area

    Stylus C40UX/C40SX/C20UX/C20SX Revision B < Photo Quality Glossy Film > 1.6.3 Printing Area Size : A4 (210mm x 297mm) Cut Sheet : A6 (105mm x 148mm) : Letter (216mm x 279mm) Thickness : 0.13 mm(0.005") Weight : N/A <Matte paper Heavy weight>...
  • Page 22 Stylus C40UX/C40SX/C20UX/C20SX Revision B Raster Graphics mode Envelope Black BM Color BM (Paper (Paper (left (Right (Top Paper size (Bottom margin) (Bottom margin) width) length) margin) margin) margin) (min.) (min.) (typ.) (typ.) (min.) (min.) (min.) 210mm 297mm 14mm (0.54”) 21mm (0.83”) (8.3”)

  • Page 23: Ink Cartridge

    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)

  • Page 24: Chapter 2 Operating Principles

    C H A P T E R OPERATING PRINCIPLES...

  • Page 25: Overview

    Revision B 2.1 Overview Paper Eject Roller This section describes the operating principles of the printer mechanism and electrical PF Motor circuit boards. The Stylus C40UX/C40SX/C20UX/C20SX has only the following two PF Roller circuit boards: Star Wheel Roller CR Timing belt...

  • Page 26: Printhead

    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 Needle 48 nozzles x 1 row: Black (nozzle pitch of the row: 1/120 inch)

  • Page 27: Printing Process

    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 For print dot system, Stylus C40UX/C40SX/C20UX/C20SX has the following two eject ink from each nozzle. kinds of printing modes. Multiple shot printing...

  • Page 28: Carriage Mechanism

    Stylus C40UX/C40SX/C20UX/C20SX Revision B 2.1.3 Carriage Mechanism 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 The carriage mechanism consists of Carriage motor (CR motor), Carriage unit sensor, HIGH signal is output to the CPU.
  • Page 29 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.

  • Page 30: Paper Feeding Mechanism

    Stylus C40UX/C40SX/C20UX/C20SX Revision B 2.1.4 Paper Feeding Mechanism Table 2-2. PF Motor Specifications Item Description 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...

  • Page 31: Paper Loading Mechanism (Asf Unit)

    Stylus C40UX/C40SX/C20UX/C20SX Revision B Additionally, the top & end of the paper is detected with the HP/PE/IC sensor. Drive sent from the PF motor is always transmitted to the ASF unit side. But, the In case the PE sensor dose not detect the paper in the paper loading sequence, the Change lever and the Clutch mechanism switch ON/OFF the PF motor drive to the LD printer detects the “Paper out error”.
  • Page 32 Stylus C40UX/C40SX/C20UX/C20SX Revision B Transfer the PF motor drive to LD roller Following Figure 2-9 shows the PF motor drive transmission path to the LD roller unit PF Motor Pinion Gear (CW) Spur Gear 60 (PF Roller) (CCW) Spur Gear 10.8...
  • Page 33 Stylus C40UX/C40SX/C20UX/C20SX Revision B Step1 Step2 Step3 Spur gear 35.2 NOTE: Clutch gear Change Lever 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...
  • Page 34 Stylus C40UX/C40SX/C20UX/C20SX Revision B Step 1 Step 2 Hopper LD roller LD roller shaft When the paper is loaded (pick up) from Paper return plate When the paper is advanced with the ASF unit, the Change lever moves to the PF roller, Change lever push...

  • Page 35: Ink System Mechanism

    Stylus C40UX/C40SX/C20UX/C20SX Revision B 2.1.6 Ink System Mechanism Table 2-4. PF motor rotational direction & Ink System Mechanism Directions Functions 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 •...

  • Page 36: Capping Mechanism

    Stylus C40UX/C40SX/C20UX/C20SX Revision B 2.1.6.2 Capping Mechanism 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.
  • Page 37 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.

  • Page 38: Ink Sequence

    EEPROM and no initial ink charge will be performed next time the -Flashing operation power is turned on. Stylus C40UX/C40SX/C20UX/C20SX takes 70 seconds to Prevents color from mixing. Stabilizes ink surface inside the nozzle. complete the initial ink charge sequence and consume about 1/4 of the brand-new black ink cartridge.
  • Page 39 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.

  • Page 40: Printing Mode

    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...

  • Page 41: Electrical Circuit Operating Principles

    2.2 Electrical Circuit Operating Principles 2.2.1 C417 PSB/PSE board The power supply boards of Stylus C40UX/C40SX/C20UX/C20SX use a RCC The electric circuit of the Stylus C40UX/C40SX/C20UX/C20SX consists of the (Ringing Chalk Converter) circuit, which generates +36VDC for drive line and following boards.
  • Page 42 Stylus C40UX/C40SX/C20UX/C20SX 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.

  • Page 43: C413 Main/B Board

    Stylus C40UX/C40SX/C20UX/C20SX Revision B 2.2.2 C413 MAIN/B Board 2.2.2.1 Main elements Table 2-8 shows the function of the each main elements on C413MAIN. 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.

  • Page 44: Chapter 3 Troubleshooting

    C H A P T E R TROUBLESHOOTING...

  • Page 45: Overview

    Stylus C40UX/C40SX/C20UX/C20SX Revision B 3.1 Overview Table 3-1. Motor, Coil Resistance Motor Location Check Point 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 Pin 1 and 3 9.6 Ohms 10%...

  • Page 46: Troubleshooting With Led Error Indications

    This section describes how to troubleshoot the problem when the printer indicates an Table 3-4. Error Condition and possible cause 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...
  • Page 47 Stylus C40UX/C40SX/C20UX/C20SX Revision B Table 3-4. Error Condition and possible cause (continued) 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...
  • Page 48 Stylus C40UX/C40SX/C20UX/C20SX Revision B Table 3-6. Paper out error indication Table 3-7. Paper out error indication Step Step Detail phenomenon Check point Remedy Detail phenomenon Check point Remedy • Check if the clutch • Replace the LD unit with ASF LD roller dose not 1.
  • Page 49 Stylus C40UX/C40SX/C20UX/C20SX Revision B Table 3-8. Paper jam error indication Table 3-9. Paper jam error indication Step Detail phenomenon Check point Remedy Step Detail phenomenon Check point Remedy • Check if the star wheel • Replace the Paper eject • Check if the Torsion •...
  • Page 50 Stylus C40UX/C40SX/C20UX/C20SX Revision B Table 3-10. Paper jam error indication Table 3-11. Paper Jam Error indication Step Step Detail phenomenon Check point Remedy Detail phenomenon Check point Remedy The PF roller 1. Check if the Torsion 1. If the Torsion spring 0.22 1.
  • Page 51 Stylus C40UX/C40SX/C20UX/C20SX Revision B Table 3-13. Multiple papers are always loaded Table 3-15. Fatal Error indication Step Step Detail phenomenon Check point Remedy Detail phenomenon Check point Remedy Check if the Paper return • Assemble the torsion 1. Check if the 1.
  • Page 52 Stylus C40UX/C40SX/C20UX/C20SX Revision B Table 3-16. Paper is not ejected completely without any error indication Table 3-17. Dot missing occur and it is not recovered with CL Step Step Detail phenomenon Check point Remedy Detail phenomenon Check point Remedy 1. Check if the Paper eject 1.
  • Page 53 Stylus C40UX/C40SX/C20UX/C20SX Revision B Table 3-18. Dot missing occur and it is not recovered with CL Table 3-19. Dot missing occur and it is not recovered with CL Step Step Detail phenomenon Check point Remedy Detail phenomenon Check point Remedy 5.
  • Page 54 Stylus C40UX/C40SX/C20UX/C20SX Revision B Table 3-20. Print quality is not good Table 3-21. Print quality is not good Step Step Detail phenomenon Check point Remedy Detail phenomenon Check point Remedy 1. Check if each segment 1. Perform the CL and check 5.
  • Page 55 Stylus C40UX/C40SX/C20UX/C20SX Revision B Table 3-22. Print quality is not good Step Detail phenomenon Check point Remedy 1. Check if the suitable 1. Use the suitable paper paper is used according to the driver according to the setting. printer driver setting.

  • Page 56: Chapter 4 Disassembly And Assembly

    C H A P T E R DISASSEMBLY AND ASSEMBLY...

  • Page 57: Overview

    See the precautions given under the handling “WARNING” and “CAUTION” in the This section describes procedures for disassembling the main components of the Stylus following column when disassembling or assembling the Stylus C40UX/C40SX/ C40UX/C40SX/C20UX/C20SX. Unless otherwise specified, disassembly units or C20UX/C20SX.
  • Page 58 Stylus C40UX/C40SX/C20UX/C20SX Revision B Never remove the ink cartridge from the carriage unless this Avant de commencer, assurez vous que l’imprimante soit eteinte manual specifies to do so. et que le cordon d’alimentation soit debranche. When transporting the printer after installing the ink cartridge,...

  • Page 59: Tools

    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. Name and Specification Outward Form Table 4-1. Name Supplier Parts No. Phillips Screw Driver (No.1) EPSON B743800100 CBS 3x6 Phillips Screw Driver (No.2)

  • Page 60: Work Completion Check

    Stylus C40UX/C40SX/C20UX/C20SX Revision B 4.1.4 Work Completion Check Table 4-3. Work Completion Check (continued) Classifi- If any service is made to the printer, use the checklist shown below to confirm all works are Item Check Point Status cation completed properly and the printer is ready to be returned to the user.

  • Page 61: Disassembly

    Stylus C40UX/C40SX/C20UX/C20SX Revision B 4.2 Disassembly 4.2.1 Upper housing removal Move the edge guide to the right until it stops moving. Make sure the edge guide is The flowchart below shows step-by-step disassembly procedures. When disassembling in the upper housing’s notch position.
  • Page 62 Stylus C40UX/C40SX/C20UX/C20SX Revision B Remove the 2 hooks at the front using a precision screwdriver (-). 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.

  • Page 63: Asf Unit Removal

    Stylus C40UX/C40SX/C20UX/C20SX Revision B 4.2.2 ASF unit removal The Top Margin adjustment is required when the ASF unit is Remove the upper housing. (Refer to Section 4.2.1) replaced. Take out the three screws. CBP 3 8 CBS (P2) 3 6 CBP 3 6 Figure 4-6.

  • Page 64: Waste Ink Pad Removal

    Stylus C40UX/C40SX/C20UX/C20SX Revision B 4.2.3 Waste ink pad removal When the Waste ink pad is replaced with a new one, following Remove the upper housing. (Refer to Section 4.2.1) service item is required. Remove the ASF unit. (Refer to Section 4.2.2) Waste ink counter reset operation.

  • Page 65: Ps Unit Removal

    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 Remove the upper housing. (Refer to Section 4.2.1) the hooks on the lower housing. Remove the ASF unit. (Refer to Section 4.2.2) Disconnect the cable from the connector (CN2) on the main board using tweezers, etc.

  • Page 66: Paper Eject Roller Removal

    Stylus C40UX/C40SX/C20UX/C20SX Revision B 4.2.5 Paper eject roller removal Take out the two screws. Remove the upper housing. (Refer to Section 4.2.1) Grip the dowel pin of the PE roller’s gear, turn it clockwise and release the carriage lock. Protrusion CBS 3 6 Figure 4-14.
  • Page 67 Stylus C40UX/C40SX/C20UX/C20SX Revision B Slide the PE roller to the left side, then remove the claw extending from the lower If the Paper eject roller gear and Paper eject roller shaft are housing. removed or , make sure that neither of the Paper eject roller shaft hooks is damaged.

  • Page 68: Paper Guide Upper/Left Removal

    Stylus C40UX/C40SX/C20UX/C20SX Revision B 4.2.6 Paper Guide Upper/Left removal 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.
  • Page 69 Stylus C40UX/C40SX/C20UX/C20SX Revision B Insert the tip of the spring to the Paper Guide. 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 Place the OHP sheet on the PF roller.
  • Page 70 Stylus C40UX/C40SX/C20UX/C20SX Revision B 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...

  • Page 71: Main Board Removal

    Stylus C40UX/C40SX/C20UX/C20SX Revision B 4.2.7 MAIN board removal Remove the three screws, then remove the shield cover. Remove the upper housing. (Refer to Section 4.2.1) USB Type Remove the ASF unit. (Refer to Section 4.2.2) CBS 3 6 Remove the PS unit. (Refer to Section 4.2.4) Remove the two hooks, then remove the Switch cover.
  • Page 72 Stylus C40UX/C40SX/C20UX/C20SX Revision B Disconnect the four connectors (CN9, CN4, CN7, CN12). Lift the MAIN board up and remove it. Tightening Torque for screw USB Type - C.B.S 3x6 screw : 9+/-1 kgf.cm - C.B.S 3x8 screw : 9+/-1 kgf.cm Parallel Type - C.B.S 3x6 screw...

  • Page 73: Cr Motor Removal

    Stylus C40UX/C40SX/C20UX/C20SX Revision B 4.2.8 CR motor removal Disconnect connector CN7 from the MAIN board then disconnect the cable. Remove the upper housing. (Refer to Section 4.2.1) When reassembling the CR motor, it contact the lib of Main Move the carriage to the center.

  • Page 74: Printhead Unit Removal

    Stylus C40UX/C40SX/C20UX/C20SX Revision B 4.2.9 Printhead unit removal Press on the left and right inside of the carriage unit, then pull the unit forward and remove the cover. Remove the upper housing. (Refer to Section 4.2.1) Remove the ink cartridges.
  • Page 75 Stylus C40UX/C40SX/C20UX/C20SX Revision B Disconnect the FFC from the connector. When the Printhead is replaced with a new one, following adjustments must be performed in the order below: Refer to Table Initial ink charge Head ID input Bi-D adjustment When the Printhead is removed and reinstalled, only the following adjustment is required.

  • Page 76: Ld Unit Removal

    Stylus C40UX/C40SX/C20UX/C20SX Revision B 4.2.10 LD unit removal When reassembling the LD unit, make sure that seven hooks are Remove the upper housing. (Refer to Section 4.2.1) set to the Main frame. Remove the ASF unit. (Refer to Section 4.2.2) Disconnect the cables which are connected to the LD unit.

  • Page 77: Printer Mechanism Removal

    Stylus C40UX/C40SX/C20UX/C20SX Revision B 4.2.11 Printer mechanism removal Remove the upper housing. (Refer to Section 4.2.1) Remove the ASF unit. (Refer to Section 4.2.2) Remove the PS unit. (Refer to Section 4.2.4) Remove the Printhead unit. (Refer to Section 4.2.9) Remove the Paper eject roller.

  • Page 78: Chapter 5 Adjustment

    C H A P T E R ADJUSTMENT...

  • Page 79: Overview

    Stylus C40UX/C40SX/C20UX/C20SX Revision B 5.1 Overview NOTE: • “O”: Required Adjustment. The number in the circle shows the required adjustment order. “NA”: Not applicable. This section describes the procedure for adjustments required when the printer is • Following adjustments are not required on this product.

  • Page 80: Adjustment Program Initial Setting Menu

    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) When you run this program, the following menu appears. Select the model name in the screen below.

  • Page 81: Adjustment Program Feature

    Stylus C40UX/C40SX/C20UX/C20SX Revision B 5.1.3 Adjustment Program feature The user interface of the main menu on this program is shown below. 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.
  • Page 82 Stylus C40UX/C40SX/C20UX/C20SX Revision B Get status This program dose not display the “Paper out” error status in the This function is used to get the printer status and following figure is displayed on the Bi-d adjustment even if the paper is out in the ASF. When the screen by clicking the “Get status”...

  • Page 83: Eeprom Initial Setting

    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. Printhead Using this function enables writing of the initial setting values to the new MAIN board’s EEPROM.
  • Page 84 Stylus C40UX/C40SX/C20UX/C20SX Revision B Choose the “Check present data” and click the OK button. Following Check Choose the “Change data” item in the Head ID input menu and click the OK present data menu is displayed. Click the OK button, then readout data is button.

  • Page 85: Bi-D

    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 Bi- directional printing. Therefore, you are required to perform this adjustment after performing the following operations.

  • Page 86: Usb Id

    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)
  • Page 87 Stylus C40UX/C40SX/C20UX/C20SX Revision B Choose the “Input USB ID” and click “OK” button in the “USB ID check/Input” menu. Following menu is displayed. 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.

  • Page 88: Top Margin

    Stylus C40UX/C40SX/C20UX/C20SX Revision B 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.

  • Page 89: Head Cleaning

    Stylus C40UX/C40SX/C20UX/C20SX Revision B The selected value is stored in EEPROM after you select the adjustment value and 5.1.9 Head cleaning click 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”...

  • Page 90: Initial Ink Charge

    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 If you clean the cavity of the printhead and cap assembly, this function will be useful.
  • Page 91 Stylus C40UX/C40SX/C20UX/C20SX Revision B Set the dummy cartridge in the printer using the ink replacement function. Select “Yes” under “Item,” then click the “OK” button. The “Refurbishment for DOA” function is then executed. Adjustment Overview...

  • Page 92: Protection Counter Check

    Stylus C40UX/C40SX/C20UX/C20SX Revision B 5.1.12 Protection counter check 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 The program allows you to check or clear the current protection counter value (waste figure.
  • Page 93 Stylus C40UX/C40SX/C20UX/C20SX Revision B Clear the present counter value Be sure to replace the installed waste ink pad with a new one after Choose the “Clear the present counter values” in the “Maintenance” menu and or before you clear the current protection counter value.

  • Page 94: Eepron Check

    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”...

  • Page 95: Eeprom Back Up Data

    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.

  • Page 96: A4 Pattern Will Print

    Figure 5-31. A4 Check pattern 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.
  • Page 97 Stylus C40UX/C40SX/C20UX/C20SX Revision B Figure 5-32. A4 Check pattern Adjustment Overview...

  • Page 98: Chapter 6 Maintenance

    C H A P T E R MAINTENANCE...

  • Page 99: Overview

    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.

  • Page 100: Service Maintenance

    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 The characteristics of the grease have great affects on the mechanical function and “Maintenance Error”, take the following actions to clear the error.
  • Page 101 Stylus C40UX/C40SX/C20UX/C20SX Revision B Table 6-2. Lubrication Type/Point Lubrication Type/Point Remarks • Use a brush to apply it. <Lubrication Point> • After lubrication, move the CR • Specified area on the Main frame. Refer to unit left or right and smooth out Figure 6-1, "Lubrication point 1".
  • Page 102 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...

  • Page 103: Chapter 7 Appendix

    C H A P T E R 1 9 APPENDIX...

  • Page 104: Connector Summary

    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 For connection with the Print Head Table 7-5 For connection with the Power supply board Table 7-6 The Major component units of this printer are as follows.
  • Page 105 Stylus C40UX/C40SX/C20UX/C20SX Revision B Table 7-5. CN9-Printhead Signal Name Function Thermistor detect signal Waveform selection signal for MS shot & variable shot Ground Head data latch pulse output Ground NCHG All nozzle fire selection pulse Ground Serial clock Ground Print data output (2)

  • Page 106: Eeprom Address Map

    Stylus C40UX/C40SX/C20UX/C20SX Revision B 7.2 EEPROM Address Map Table 7-7. EEPROM Address Map Address Explanation Setting QPIT Factory setting setting Table 7-7. EEPROM Address Map CPU Time Address Explanation Setting QPIT Factory setting setting Ink flag 1 Bit7: CSIC Disable...
  • Page 107 Stylus C40UX/C40SX/C20UX/C20SX Revision B Table 7-7. EEPROM Address Map Address Explanation Setting QPIT Factory setting setting Address Explanation Setting QPIT Factory setting setting Bi-D Adjustment for -72<=n<=+72 (*1) ND Cl shift Value Units 1/1440inchWorkaround;Bi Ink counter Cm Reserved Manufacturer Bit7: Name mode...
  • Page 108 Stylus C40UX/C40SX/C20UX/C20SX Revision B Address Explanation Setting QPIT Factory Address Explanation Setting QPIT Factory setting setting setting setting Bi-D Adjustment 3 -72<=n<=+72(by 1/2880inch) (*1) Head Actuator Rank +30<=n<=+70 (*1) ID for IwB (for Variable shot) Head Actuator Rank +30<=n<=+70 (*1)
  • Page 109 *c: Model 1 and model 2 show the following product. Model-1: EPSON Stylus C20SX , EPSON Stylus C20UX Panasonic Model-2: EPSON Stylus C40SX , EPSON Stylus C40UX Sharp *d: Manufacturer and Description name show the following setting. Sony Name mode...

  • Page 110: Component Layout

    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...
  • Page 111 Stylus C40UX/C40SX/C20UX/C20SX Revision B Figure 7-5. C417PSE component layout Figure 7-4. C417PSB component layout Appendix Component Layout...

  • Page 112: Parts List

    Stylus C40UX/C40SX/C20UX/C20SX Revision B 7.4 Parts List Table 7-8. parts list Ref No. Description Table 7-8. parts list "POROUS PAD,TUBE,STOPPER" Ref No. Description "SHIELD PLATE,M/B" "HOUSING,UPPER,USB" "C.B.P-TITE SCREW,3X8,F/ZN" "COVER,PRINTER,USB" C.B.S. SCREW(B300204211) PAPER SUPPORT EDGE GUIDE STACKER HOPPER LOGO PLATE 10X40;C "PAD,HOPPER"...

  • Page 113: Exploded Diagram

    Stylus C40UX/C40SX/C20UX/C20SX Revision B 7.5 Exploded Diagram Following pages shows exploded diagram. Figure 7-6. Stylus C40UX/C40SX/C20UX/C20SX Exploded Diagram 1 Appendix Exploded Diagram...
  • Page 114 Stylus C40UX/C40SX/C20UX/C20SX Revision B for 220V for 120V except forEURO,EAI(220V),ASIA(220V), EAL,RUSSIA Figure 7-7. Stylus C40UX/C40SX/C20UX/C20SX Exploded Diagram 2 Appendix Exploded Diagram...
  • Page 115 Stylus C40UX/C40SX/C20UX/C20SX Revision B 513 X 2 SO S Figure 7-8. Stylus C40UX/C40SX/C20UX/C20SX Exploded Diagram 3 Appendix Exploded Diagram...
  • Page 116 Stylus C40UX/C40SX/C20UX/C20SX Revision B Figure 7-9. Stylus C40UX/C20UX Exploded Diagram 4 Appendix Exploded Diagram...
  • Page 117 Stylus C40UX/C40SX/C20UX/C20SX Revision B Figure 7-10. Stylus C40SX/C20SX Exploded Diagram 4 Appendix Exploded Diagram...
  • Page 118 Stylus C40UX/C40SX/C20UX/C20SX Revision B Figure 7-11. Stylus C40UX/C40SX/C20UX/C20SX Exploded Diagram 5 Appendix Exploded Diagram...

  • Page 119: Electrical Circuits

    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...

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