SERVICE MANUAL Color Image Scanner EPSON Perfection 1240U Perfection 1240U PHOTO ® SESC00-008
EPSON Perfection 1240U Revision A 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, recording, or otherwise, without the prior written permission of SEIKO EPSON CORPORATION. The contents of this manual are subject to change without notice. All effort have been made to ensure the accuracy of the contents of this manual.
EPSON Perfection 1240U Revision A PRECAUTIONS Precautionary notations throughout the text are categorized relative to 1)Personal injury and 2) damage to equipment. DANGER WARNING 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. Signals a precaution which, if ignored, could result in damage to equipment.
EPSON Perfection 1240U Revision A PREFACE This manual describes basic functions, theory of electrical and mechanical operations, maintenance and repair procedures of EPSON Perfection 1240U and Perfection 1240U PHOTO. 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. The chapters are organized as follows: CHAPTER 1.
EPSON Perfection 1240U Revision A Revision Status Revision Issued Date Description A August 9, 2000 First Release
EPSON Perfection 1240U Revision A Contents Chapter 1 Product Description 1.1 Features ................................................................................................... 8 1.2 Product Description .................................................................................. 9 1.3 Interface Specifications .......................................................................... 12 1.3.1 USB Specifications........................................................................ 12 1.
1 CHAPTER PRODUCT DESCRIPTION
EPSON Perfection 1240U Revision A 1.1 Features EPSON Perfection 1240U consists of two models : 1240U and 1240U PHOTO. Major features are as follows. Perfection 1240U PHOTO has the TPU (transparency unit) as standard unit. MAJOR FEATURES Best suited speed / best image quality A4 color image scanner for consumer use High quality Resolution: Depth: 1200 dpi (Optical resolution by 6 line CCD with 30600 pixels) 14 bit-in, 14 bit-out High speed Monochrome 2 value: 6.5 msec/line Full Color: 7.
EPSON Perfection 1240U Revision A 1.
EPSON Perfection 1240U Revision A ELECTRICAL SPECIFICATIONS SAFETY, EMC, EPA Scanner unit electrical specifications Safety: NOM UL 1950 CSA C22.2 NO.950 EN60950 IEC60950 EMC: FCC Part15 Subpart B Class B CSA C108.8 Class B AS/NZS3548 Class B CISPR Pub22 Class B CNS 1348 Class B Korea EMC Rated input voltage: DC24V Power consumption: Approx.20W (Operating) Approx.10W (Stand-by) Rated input current: 0.
EPSON Perfection 1240U Revision A ENVIRONMENTAL CONDITIONS PHYSICAL DIMENSIONS AND WEIGHT Temperature: Dimensions: 269(W) x 435(D) x 93(H) mm Weight: Approx. 2.8 Kg Operating: 5 °C to 35 °C Storage: -25 °C to 60 °C Humidity: Operating: 10 to 80%, no condensation Storage: 10 to 85%, no condensation RELIABILITY MCBF: 30, 000 cycle OPERATING CONDITIONS Ordinary office or home conditions. Extreme dust should be avoided.
EPSON Perfection 1240U Revision A 1.3 Interface Specifications Table 1-2. Configuration This section provides specifications of the USB, the only interface supported by the Perfection 1240U and the Perfection 1240U PHOTO. Element Device • • • • • • • Class: Vendor specific Subclass: Vendor specific Protocol: Vendor specific Maximum packet size for endpoint 0: 64bytes Vendor ID: 0x04B8 (Seiko EPSON Corp.
EPSON Perfection 1240U Revision A 1.4 Control Codes classification The command levels of this scanner are ESC/I (B8) and FS. The commands supported are shown in the table below. Table 1-3.
EPSON Perfection 1240U Revision A 1.5 Switches 1.6 Indicator Descriptions Push Button Switch (3) - Front (See Figure 1-4.) LED indicator shows the various conditions by turning on/off or blinking.
EPSON Perfection 1240U Revision A 1.7 Error Indications FATAL ERROR Cause: Lamp is broken. Power is turned on or command is received without removing the transportation lock. Scanner unit fault. Disposition: Lamp goes off and the scanner stops operating. The bit 7 of the status byte is set. Indicator: Red LED High speed blinking Remedy: ( After cause is remove ) Switch off the power and turn it on again. Send initialization command (ESC @). Plug out and in the USB connector.
EPSON Perfection 1240U Revision A 1.
2 CHAPTER OPERATING PRINCIPLES
EPSON Perfection 1240U Revision A 2.1 Engine Mechanism This section explains the engine function and operating principles. Engine can be divided into Carriage Unit and Carriage Move Mechanism. CCD Sensor Board: This board has Color CCD line sensor (independent R,G,B), and controls it and drives circuit. Inverter Board: This board generates voltage to drive the lamp by pressuring up to the +24VDC and converting it from direct current to alternating current.
EPSON Perfection 1240U Revision A 2.1.2 Carriage Move Mechanism Scanning image is performed in the main scan direction (=1 line) by the CCD sensor and in the sub-scan direction (=several lines) combined with carriage unit movement. (See the figure below) Line type, color CCD sensor can scan 1 line in main scan direction (parallel to the carriage unit) by one time.
EPSON Perfection 1240U Revision A 2.2 Control Circuit The CPU (IC12) of this scanner is a one-tip 16-bit bus CPU operating at 20MHz. ASIC (IC10) manages input signal correction, image processing, and controlling the CCD sensor board and USB interface. The power supply control uses a DC/DC converter to generate 5 V and 12 V signals from the 24 V DC input. Table 2-1 shows the major IC functions.
3 CHAPTER TROUBLESHOOTING
EPSON Perfection 1240U Revision A 3.1 Overview Table 3-1. Errors Detected by the Self-Diagnostic Function This chapter describes troubleshooting procedures for this scanner. LED Condition Command Error Cause: Undefined command or undefined command parameter is received. Disposition: The scanner ignores the wrong command or parameter, ( Maintain at current settings.) Scanner sends NACK, and waits for the next command or parameter.
EPSON Perfection 1240U Revision A 3.3 Troubleshooting Table 3-4. The carriage unit does not operate. This section describes how to troubleshoot problems according to exhibited phenomenons. See Table 3-2 that enables you to find the defective part to the unit level. Then refer to the corresponding table for checkpoints and solutions. Cause Step Checkpoints Finding Remedy CN3 on the main board is disconnected. 1 Check that CN3 is disconnected. Yes Connect CN3 on the main board properly.
EPSON Perfection 1240U Revision A Table 3-8. USB Interface Error Table 3-6. The lamp does not light up. Cause Step Checkpoints Finding Remedy CN1 on the main board is disconnected. 1 Check that CN1 is disconnected. Yes Connect CN1 on the main board properly. CN1 or CN2 on the CCD sensor board is disconnected. 2 Check that CN1 or CN2 on the CCD sensor board is disconnected. Yes Connect CN1 or CN2 on the CCD sensor board properly.
4 CHAPTER ASSEMBLY AND DISASSEMBLY
EPSON Perfection 1240U Revision A 4.1 Overview 4.1.2 Tools Use the tools specified in Table 4-1. This chapter describes procedures for disassembling the EPSON Perfection 1240U. Unless otherwise specified, the scanner can be disassembled by reversing the disassembly procedures. Table 4-1. Tools Names 4.1.1 Precautions W A R N IN G C A U T IO N Disconnect the power cable before disassembling or assembling the scanner.
EPSON Perfection 1240U Revision A 4.2 Disassembly Procedures 4.2.1 Releasing the Carriage Lock 1. Disconnect the AC adapter from the scanner body. 2. Check that the carriage lock at the back of the scanner body is released. Released Locked Figure 4-2. Carriage lock position C A U T IO N When locking the carriage for transporting the scanner, make sure the carriage is at the home position.
EPSON Perfection 1240U Revision A 4.2.2 Document Cover Removal 1. Open the Document Cover. 2. Lift the Document Cover by its edges to remove it. Document Cover Figure 4-3. Document Cover Removal (1) Assembly and Disassembly Figure 4-4.
EPSON Perfection 1240U Revision A 4.2.3 Upper Housing Removal 1. Release the Carriage Lock. (See Section 4.2.1.) Two Hooks on the Front 2. Remove the Document Cover. (See Section 4.2.2.) 3. Remove the two screws (gold, CBP, M3x8) at the back of the scanner body. 4. Lifting up the rear end of the Upper Housing, release the two hooks with pushing the Upper Housing toward the front, and then remove the Upper Housing.
EPSON Perfection 1240U Revision A 4.2.4 Inverter Lamp / Inverter Board Removal 1. Release the Carriage Lock. (See Section 4.2.1.) 2. Remove the Document Cover. (See Section 4.2.2.) 3. Remove the Upper Housing. (See Section 4.2.3.) 4. Remove the two screws (CCP, M3x8) on the Carriage Unit. (See Figure 4-8.) 5. Using a standard screw driver, lift up the carriage cover in the Carriage Unit, and then move it to the back to remove it. (See Figure 4-9.) CCP Screws (M3x8) Figure 4-8.
EPSON Perfection 1240U Revision A 6. Disconnect the connector for the Inverter Lamp from the Inverter Board. Connector 7. Disconnect the 2-pin connector for the CCD sensor. Inverter Board 8. Release the two hooks, and then remove the Inverter Board. Connector (2-pin) Hooks Figure 4-10.
EPSON Perfection 1240U Revision A 9. Remove the Lamp Cover from the Carriage Cover. 10. Remove the Inverter Lamp from the carriage cover. C H E C K P O IN T • When installing the Inverter Lamp, be sure to connect it to the hook on the Carriage Cover. • When removing the Inverter Lamp, be careful not to touch the Inverter Lamp directly. • The Inverter Board will be warm immediately after the power is turned off, so wait for it to cool sufficiently before removing it.
EPSON Perfection 1240U Revision A 4.2.5 Carriage Unit Removal 1. Release the Carriage Lock. (See Section 4.2.1.) 2. Remove the Document Cover. (See Section 4.2.2.) 3. Remove the Upper Housing. (See Section 4.2.3.) 4. Remove the Clip Shaft. 5. Raise the Carriage Unit slightly to remove it from the timing belt, remove the Carriage Guide Shaft, and then remove the Carriage Unit. Figure 4-14. Carriage Unit Removal (2) Clip Shaft Figure 4-13. Carriage Unit Removal (1) CR Shaft Figure 4-15.
EPSON Perfection 1240U Revision A 6. Remove the six screws (gold, CBP, M3x8), and then remove the Main Circuit Board Shield Plate. 6. CBS Screw (M3x8) 7. Use a standard screw driver to remove the Ferrite Core. 6. Main Board Cover 8. Disconnect the FFC Cable (white) from the Main Circuit Board. 6. CBP Screws (M3x8) Figure 4-16. Shield Plate Removal FFC Cable Ferrite Core Figure 4-17.
EPSON Perfection 1240U Revision A 9. FFC Cable Removal 1) Remove the two screws (CCP, M3x8) on top of the Carriage Unit. (See Section 4.2.4.) 2) Remove the Carriage Cover. (Use a standard screw driver to raise the Carriage Cover and then pull it backward.) (See Section 4.2.4.) 3) Use a standard screw driver to remove the Ferrite Core. 4) Disconnect the FFC Cable (white) from underneath the Carriage Unit (connector and hook x2). C A U T IO N Do not touch the mirror when removing the FFC Cable.
EPSON Perfection 1240U Revision A 4.2.6 Carriage Motor / Timing Belt Removal 5. CBS Screw (M3x8) 1. Release the Carriage Lock. (See Section 4.2.1.) 5. Main Board Cover 6. CBS Screws (M3x8) 2. Remove the Document Cover. (See Section 4.2.2.) 3. Remove the Upper Housing. (See Section 4.2.3.) 4. Remove the Carriage Unit. (See Steps 1-8 in Section 4.2.5.) 5. Remove the six screws (gold, CBP, M3x8) and then remove the main board cover. 6. Remove the screw (gold, CBP, M3x8) securing the CR Motor Unit. 7.
EPSON Perfection 1240U Revision A 8. Follow the steps below to remove the Timing Belt from the CR Motor Unit. Transmission Gear 1) Remove the E-ring from the transmission gear. Drive Pulley 2) Remove the transmission gear. 3) Remove the E-ring from the drive pulley. 4) Remove the drive pulley. E-ring Timing Belt Figure 4-22. Timing Belt Removal Timing Belt Drive Pulley Transmission Gear E-ring Figure 4-23.
EPSON Perfection 1240U Revision A 4.2.7 Main Board Removal 5. CBS Screws (M3x4) 1. Release the Carriage Lock. (See Section 4.2.1.) 2. Remove the Document Cover. (See Section 4.2.2.) 3. Remove the Upper Housing. (See Section 4.2.3.) 4. Slide the Carriage Unit slowly until you see the whole main board cover. 5. Remove the six screws (CBP, M3x8) securing the main board cover, and then remove the main board cover. 4. Carriage Unit Figure 4-24.
EPSON Perfection 1240U Revision A 6. Remove the two screws (CP, M3x5) securing the Main Board. Carriage FFC Connector 7. Disconnect the following cables from the corresponding connectors; CR Motor - CN3, carriage FFC, Panel Board - CN4. CN4 (Panel Board) 8. Remove the Main Board. CN3 (CR Motor) Figure 4-26. Main Board Removal (3) CP Screw (M3x5) Figure 4-25. Main Board Removal (2) Figure 4-27.
EPSON Perfection 1240U Revision A 4.2.8 Panel Board Removal 1. Release the Carriage Lock. (See Section 4.2.1.) 2. Remove the Document Cover. (See Section 4.2.2.) Hooks 3. Remove the Upper Housing. (See Section 4.2.3.) 4. Disconnect the Connector (CN1) and Hooks (x2), and then remove the Panel Board. C H E C K P O IN T In the following steps, manually move the carriage back and forth slowly if necessary. Connector Panel Board Figure 4-28.
EPSON Perfection 1240U Revision A 4.2.9 Carriage Rail Removal CCP Screws (M3x8) 1. Release the Carriage Lock. (See Section 4.2.1.) 2. Remove the Document Cover. (See Section 4.2.2.) 3. Remove the Upper Housing. (See Section 4.2.3.) 4. Remove the Carriage Unit. (See Steps 1-6 in Section 4.2.5.) 5. Remove the two screws (CCP, M3x8) securing the Carriage Rail, and then remove the Carriage Rail. Carriage Rail Figure 4-29.
EPSON Perfection 1240U Revision A 4.2.10 Driven Pulley Removal Torsion Spring Hooks 1. Release the Carriage Lock. (See Section 4.2.1.) CCP Screws (M3x8) 2. Remove the Document Cover. (See Section 4.2.2.) 3. Remove the Upper Housing. (See Section 4.2.3.) Driven Pulley Holder 4. Remove the Carriage Unit. (See Steps 1-8 in Section 4.2.5.) E-ring 5. Remove the Carriage Unit. (See Steps 1-8 in Section 4.2.6.) Driven Pulley 6. Release the timing belt from the Driven Pulley. 7.
5 CHAPTER ADJUSTMENT
EPSON Perfection 1240U Revision A This scanner needs no adjustment at the level of the service, including part replacement, specified in Chapter 4 “Disassembly and Assembly”.
6 CHAPTER MAINTENANCE
EPSON Perfection 1240U Revision A 6.1 Overview Table 6-2. Lubrication Points Figure This chapter provides information necessary to keep the scanner function in optimum condition constantly and to prevent troubles. Lubrication Points Lubrication Figure 6-1 Transmission gear shaft of the CR motor and drive pulley shaft. G-26 (1x3 mm) for each Figure 6-1 Driven pulley shaft G-26 (1x3 mm) 6.1.1 Cleaning Perform cleaning when stain is noticeable.
7 CHAPTER APPENDIX
EPSON Perfection 1240U Revision A 7.1 Overview 7.1.2 Connector Assignment This section provides useful information for servicing this scanner. Table 7-1. Connector Summary- B124MAIN Connector Number 7.1.
EPSON Perfection 1240U Revision A Table 7-2. Main Board - CN1 Table 7-5. Main Board - CN4 Pin No. Signal I/O 1, 3, 5, 7, 18 GND - 1 GND - 2 B I 2 OP-LED O 4 R I 3 ERR-LED O 6 G I 4 PM-SW1 I 8 B-SH O 5 PM-SW2 I 9 R-SH O 6 PM-SW3 I 10 G-SH O 11 SH O 12 12V O 13 F1X O 14 F2X O 15 RS O 16 5V O 17 24V O Pin No. Signal I/O 1 +24V I 2 GND - Pin No.
EPSON Perfection 1240U Revision A 7.2 Circuit Diagram The figure on the next page shows the circuit diagram of B124 MAIN.
EPSON Perfection 1240U Revision A 7.3 Parts List and Explode Diagrams Table 7-9. Parts List Ref.# Appendix Description Ref.# Description Ref.# Description 100 HOUSING ASSY.,LOWER;ASP 131 TIMING BELT 201 WIRE HARNESS 101 HOUSING ASSY.,UPPER;ASP OTHERS 132 HOLDER ASSY.,PULLEY,DRIVEN 300 AC ADAPTER 102 LEVER,MOUNT,CARRIAGE 133 TORSION SPRING,238 400 POWER CABLE 103 MAT,COVER,DOCUMENT 134 SHAFT,CR 401 HARNESS 104 COVER,DOCUMENT 135 RETAINING RING 450 BOARD ASSY.
EPSON Perfection 1240U Revision A 140 140 140 120 See next page. 110 104 113 103 A 200 140 111 140 500 150 140 201 400 152 151 101 300 153 A 112 141 450 106 136 102 142 141 401 160 (For JAPAN) 134 142 130 137 135 138 135 131 140 141 109 105 140 133 108 132 109 100 107 107 GT-7700U/Perfection 1240U Perfection 1240U PHOTO No.01 Rev.01 10244 Figure 7-2. Exploded Diagram No.
EPSON Perfection 1240U Revision A 506 505 508 503 510 503 504 509 501 507 502 GT-7700U/Perfection 1240U Perfection 1240U PHOTO No.02 Rev.01 10244 Figure 7-3. Exploded Diagram No.
EPSON Perfection 1240U Revision A 7.4 TPU; Parts List Table below shows the parts list of TPU (Transparency Unit). Table 7-10. TPU Parts List Appendix Number Parts Name 800 HOUSING ASSY.,UPPER 801 B/L ASSY. 802 COVER,ILLUMINATION 803 HOUSING,LOWER 804 HOUSING,BASE 805 HOUSING,FASTEN,R 806 HOUSING,FASTEN,L 807 BOARD ASSY.,INVERTER 808 HARNESS 809 FOOT 810 SHEET,SPACER 811 C.B.B. SCREW 812 C.B.B.SCREW 813 C.B.B. SCREW 814 C.B.
EPSON Perfection 1240U Revision A 7.5 Exploded Diagram for TPU 800 808 814 B A 807 801 B 816 FOR EAI 815 803 810 809 806 809 804 A 811 810 802 809 811 809 811 813 805 813 812 Perfection 1240U PHOTO / FILM ADAPTER No.04 Rev.01 10244 Figure 7-4.
