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Epson Series Perfection 1240U Series Service Manual Download Page 37

EPSON Perfection 1240U

Revision A

Assembly and Disassembly

Disassembly Procedures

37

8. Follow the steps below to remove the Timing Belt from the CR Motor 

Unit.

1) Remove the E-ring from the transmission gear.

2) Remove the transmission gear.

3) Remove the E-ring from the drive pulley.

4) Remove the drive pulley.

Figure 4-22.  Timing Belt Removal

Figure 4-23.  Parts in the CR Motor Unit

Timing Belt

Drive Pulley

Transmission Gear

E-ring

Transmission Gear

E-ring

Timing Belt

Drive Pulley

Summary of Contents for Series Perfection 1240U Series

Page 1: ...EPSONPerfection1240U Perfection1240UPHOTO Color Image Scanner SESC00 008 SERVICE MANUAL SERVICE MANUAL SERVICE MANUAL SERVICE MANUAL ...

Page 2: ...he accuracy of the contents of this manual However should any errors be detected SEIKO EPSON would greatly appreciate being informed of them 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 identif...

Page 3: ...N 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 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...

Page 4: ... overview and specifications of the product CHAPTER 2 OPERATING PRINCIPLES Describes the theory of electrical and mechanical operations of the product CHAPTER 3 TROUBLESHOOTING Provides the step by step procedures for troubleshooting CHAPTER 4 DISASSEMBLY AND ASSEMBLY Describes the step by step procedures for disassembling and assembling the product CHAPTER 5 ADJUSTMENTS This product reqires no ad...

Page 5: ...EPSON Perfection 1240U Revision A Revision Status Revision Issued Date Description A August 9 2000 First Release ...

Page 6: ...ssembly 4 1 Overview 26 4 1 1 Precautions 26 4 1 2 Tools 26 4 1 3 Screws 26 4 2 Disassembly Procedures 27 4 2 1 Releasing the Carriage Lock 27 4 2 2 Document Cover Removal 28 4 2 3 Upper Housing Removal 29 4 2 4 Inverter Lamp Inverter Board Removal 30 4 2 5 Carriage Unit Removal 33 4 2 6 Carriage Motor Timing Belt Removal 36 4 2 7 Main Board Removal 38 4 2 8 Panel Board Removal 40 4 2 9 Carriage R...

Page 7: ...C H A P T E R 1 PRODUCT DESCRIPTION ...

Page 8: ...out High speed Monochrome 2 value 6 5 msec line Full Color 7 0 msec line Note 1200dpi High speed mode EASE OF USE EPSON Smart Panel Same functions as Stylus Scan 2000 2500 Achieve easy scanning with three buttons Instant Photo Print Utility Modified from Perfection 1200 New TWAIN functions DTR Document Type Recognition Auto skew correction TWAIN is version up from Perfection 1200 To make it smalle...

Page 9: ...evel A B PRINTER 3 level A B C User defined 1 level Color Correction Impact Dot Printer Thermal Printer Ink Jet Printer CRT Display User defined 1 level Brightness 7 levels Line Art Fixed threshold TET Text Enhancement Technology Digital halftoning AAS Error Diffusion 3 modes A B C Bi level Quad level Dither Resident 4 modes A B C Dither User defined 2 modes A B Interface Resident USB Type B Recep...

Page 10: ...ency Range 49 5 60 5 Hz Rated output voltage DC24V Rated output current 0 8A Insulation resistance 10 MΩ at 500VDC between AC line and chassis Dielectric strength AC 1 2kV 1 min between AC line and chassis SAFETY EMC EPA 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 CE Marki...

Page 11: ...ary office or home conditions Extreme dust should be avoided Illumination Operation under direct sunlight or near strong light source is not guaranteed and should be avoided DOCUMENT Reflective type Documents which has a smooth surface such as a printing and photograph Transparency type with transparency unit Reversal film Negative film PHYSICAL DIMENSIONS AND WEIGHT Dimensions 269 W x 435 D x 93 ...

Page 12: ... Connector Pin Assignment Table 1 2 Configuration Pin No Signal 1 VCC 2 Data 3 Data 4 GND 1 2 3 4 Element Description Device Class Vendor specific Subclass Vendor specific Protocol Vendor specific Maximum packet size for endpoint 0 64bytes Vendor ID 0x04B8 Seiko EPSON Corp Product ID 0x010B Number of possible configurations 1 Configuration Number of interfaces supported by this configuration 1 Cha...

Page 13: ...tion ESC R n1 n2 Set Zooming ESC Hi1 i2 Set Scanning Area ESC A n1 n2 n3 Set Color ESC C i Set Mirroring ESC Ki Set Scanning Parameter FS W Image Correction Set Brightness ESC Li Set Gamma Correction ESC Z i Down Load Gamma Table ESC z i d 256 Set Sharpness Control ESC Qi Image Disposition Set Half tone Processing ESC Bi Set Auto Area Segmentation ESC si Down Load Dither Pattern ESC bijd j 2 Set C...

Page 14: ...canning and printing by pushing button This button is not User programmable SCAN Button The SCAN Button is assigned to the PhotoDeluxe on ESP Scanning starts full automatically and export a image data to PhotoDeluxe This button is not User programmable 1 6 Indicator Descriptions LED indicator shows the various conditions by turning on off or blinking Conditions indicated by LED indicator are as li...

Page 15: ...ng action in the communication procedure Disposition Lamp goes off and scanner stops operating Indicator Red LED High speed blinking Remedy Turn power off and then turn it on again Plug out and in the USB connector Acceptable command None 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 ...

Page 16: ...EPSON Perfection 1240U Revision A Product Description Manuscript Table 16 1 8 Manuscript Table Dimension 216 mm Horizontal x 297 mm Vertical 216 mm 3 2 mm 297 mm Front 3 2 mm Origin Point ...

Page 17: ...C H A P T E R 2 OPERATINGPRINCIPLES ...

Page 18: ...he 24VDC and converting it from direct current to alternating current Lamp White cold fluorescent Lamp is used as light source When the light quantity is not stable the scanner blinks the Operate light until the light becomes stable and goes to stand by mode Mirror and Lens Mechanism The light emitted to the document reaches the CCD sensor after being reflected on some mirrors one after another No...

Page 19: ...ned data for n lines and n 1 line are processed consecutively Figure 2 3 Carriage Movement Carriage Unit slides into sub scan direction along with the guide rail For this sliding operation the carriage motor drives the timing belt attached to the carriage unit by conveying the driving force through the drive pulley and reduction gear Scanning start position is determined by CR HP sensor which is l...

Page 20: ... IC17 SRAM 64k x 16bit E02A32SA IC10 ASIC Manages the following Input image signal correction CCD control Line control Image processing Memory control Data in output control A3957SLBTR IC4 5 CR motor driver IC M51953A IC11 Reset IC M27C1001 10F1 IC9 PROM 4M x 8bit IS61C256AH IC16 SRAM 32k x 8bit GP1S58V PC1 CR home position sensor NJM2360 IC1 2 DC DC Converter AD9822 IC19 8bit A D Converter E02A35...

Page 21: ...C H A P T E R 3 TROUBLESHOOTING ...

Page 22: ...in at current settings Scanner sends NACK and waits for the next command or parameter Remedy Once the correct command is received the error condition is cleared Red LED High speed blinking Interface Error Cause Detects the wrong action in the communication procedure Disposition Lamp goes off and scanner stops operating Remedy z Turn power off and then turn it on again z Plug out and in the USB con...

Page 23: ...connectors disconnected Yes Connect any disconnected connectors No Replace the main board Table 3 4 The carriage unit does not operate 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 The carriage drive mechanism is defective 2 Is grease G 26 properly applied See Chapter 6 No Apply grease to the ...

Page 24: ...the surface of the lamp is dirty 1 After cleaning the mirror s check that image is read clearly No Clean the surface of the lamp The CCD sensor board is defective 2 Replace the carriage unit The main board is defective 3 Replace the main board Table 3 8 USB Interface Error Cause Step Checkpoints Finding Remedy The host does not support USB 1 On the Windows access My Computer Property Device Manage...

Page 25: ...C H A P T E R 4 ASSEMBLYANDDISASSEMBLY ...

Page 26: ...le before disassembling or assembling the scanner Wear a pair at gloves to protect your hand from the sharp edge in the scanner mechanism C A U T I O N When servicing note the points below Consider the size of the scanner and make enough room for servicing Since this scanner is a precision equipment service it on a flat level heavy duty table R e a r B a c k F r o n t R i g h t L e f t E P S O N I...

Page 27: ... 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 Figure 4 2 Carriage lock position Released Locked C A U T I O N When locking the carriage for transporting the scanner make sure the carriage is at the home position ...

Page 28: ...mbly and Disassembly Disassembly Procedures 28 4 2 2 Document Cover Removal 1 Open the Document Cover 2 Lift the Document Cover by its edges to remove it Figure 4 3 Document Cover Removal 1 Figure 4 4 Document Cover Removal 2 Document Cover ...

Page 29: ...3x8 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 Figure 4 5 Upper Housing Removal 1 Figure 4 6 Upper Housing Removal 2 Figure 4 7 After Removing the Upper Housing C A U T I O N When removing the Upper Housing make sure two hooks are released from the Lower Housi...

Page 30: ...e 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 Figure 4 8 Carriage Unit Disassembly 1 Figure 4 9 Carriage Unit Disassembly 2 CCP Screws M3x8 ...

Page 31: ...cedures 31 6 Disconnect the connector for the Inverter Lamp from the Inverter Board 7 Disconnect the 2 pin connector for the CCD sensor 8 Release the two hooks and then remove the Inverter Board Figure 4 10 Inverter Board Removal Hooks Connector 2 pin Connector Inverter Board ...

Page 32: ...Inverter Lamp Removal 2 C H E C K P O I N 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 Catches Carriage Cover Lamp Cover Carriage Cover Inver...

Page 33: ... 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 13 Carriage Unit Removal 1 Figure 4 14 Carriage Unit Removal 2 Figure 4 15 Carriage Unit Removal 3 Clip Shaft CR Shaft ...

Page 34: ... M3x8 and then remove the Main Circuit Board Shield Plate 7 Use a standard screw driver to remove the Ferrite Core 8 Disconnect the FFC Cable white from the Main Circuit Board Figure 4 16 Shield Plate Removal Figure 4 17 Ferrite Core Removal 6 CBS Screw M3x8 6 CBP Screws M3x8 6 Main Board Cover FFC Cable Ferrite Core ...

Page 35: ... 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 Figure 4 18 FFC Cable Removal 1 Figure 4 19 FFC Cable Removal 2 C A U T I O N Do not touch the mirror when removing the FFC Cable Ferrite Core Hooks Connecto...

Page 36: ...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 Disconnect the cable for the CR Motor Unit from the connector on the main board and then remove the CR Motor Unit Figure 4 20 Shield Plate Removal Figure 4 21 CR Motor Unit Removal 5 CBS Screw M3x8 5 CBS Screws M3x...

Page 37: ...rom the CR Motor Unit 1 Remove the E ring from the transmission gear 2 Remove the transmission gear 3 Remove the E ring from the drive pulley 4 Remove the drive pulley Figure 4 22 Timing Belt Removal Figure 4 23 Parts in the CR Motor Unit Timing Belt Drive Pulley Transmission Gear E ring Transmission Gear E ring Timing Belt Drive Pulley ...

Page 38: ...ection 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 Figure 4 24 Main Board Removal 1 4 Carriage Unit 5 CBS Screws M3x4 ...

Page 39: ...x5 securing the Main Board 7 Disconnect the following cables from the corresponding connectors CR Motor CN3 carriage FFC Panel Board CN4 8 Remove the Main Board Figure 4 25 Main Board Removal 2 Figure 4 26 Main Board Removal 3 Figure 4 27 Main Board CP Screw M3x5 Carriage FFC Connector CN3 CR Motor CN4 Panel Board ...

Page 40: ...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 Disconnect the Connector CN1 and Hooks x2 and then remove the Panel Board Figure 4 28 Panel Board Removal C H E C K P O I N T In the following steps manually move the carriage back and forth slowly if necessary Connector Hooks Panel Board ...

Page 41: ...age 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 Figure 4 29 Carriage Rail Removal CCP Screws M3x8 Carriage Rail ...

Page 42: ... the Carriage Unit See Steps 1 8 in Section 4 2 6 6 Release the timing belt from the Driven Pulley 7 Use a standard screw driver to remove the Torsion Spring from the Hook 8 Remove the screw CCP M3x8 securing the Driven Pulley Holder 9 Take out the Driven Pulley Holder 10 Remove the E ring 11 Remove the Driven Pulley Figure 4 30 Driven Pulley Removal Figure 4 31 Driven Pulley Unit CCP Screws M3x8 ...

Page 43: ...C H A P T E R 5 ADJUSTMENT ...

Page 44: ...EPSON Perfection 1240U Revision A Adjustment 44 This scanner needs no adjustment at the level of the service including part replacement specified in Chapter 4 Disassembly and Assembly ...

Page 45: ...C H A P T E R 6 MAINTENANCE ...

Page 46: ...with neutral detergent If any trace is left wipe it off with a dry clean cloth again 6 1 2 Lubrication You need to lubricate the carriage unit if you have replaced it or notice it making abnormal noise See the following tables for the recommended grease type and points to apply it Table 6 1 Recommended Grease EPSON exclusive Not on the market Table 6 2 Lubrication Points Figure 6 1 Lubrication Poi...

Page 47: ...C H A P T E R 7 APPENDIX ...

Page 48: ...nel Board 6 pin CN4 CN1 CN1 18 pin CCD Board 2 pin CN2 CN1 Inverter Board Lamp 2 pin CN2 CR Motor CN1 Connector Number Description Number of Pins Refer to B124MAIN Board CN1 To the CCD Sensor Board 18 Table 7 2 CN2 AC Input 2 Table 7 3 CN3 To the CR Motor 4 Table 7 4 CN4 To the Panel Board 6 Table 7 5 CN5 To the USB Cable 4 Table 1 1 CN6 To Option 8 Table 7 6 CCD Sensor Board CN1 To the Main Board...

Page 49: ... Pin No Signal I O 1 3 5 7 18 GND 2 B I 4 R I 6 G I 8 B SH O 9 R SH O 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 Signal I O 1 BX O 2 AX O 3 B O 4 A O Pin No Signal I O 1 GND 2 OP LED O 3 ERR LED O 4 PM SW1 I 5 PM SW2 I 6 PM SW3 I Pin No Signal I O 1 5V O 2 GND 3 24V O 4 LOD O 5 GND 6 RxD I 7 TxD O 8 SCK O Pin No Signal I O 1 24V O 2...

Page 50: ...EPSON Perfection 1240U Revision A Appendix Circuit Diagram 50 7 2 Circuit Diagram The figure on the next page shows the circuit diagram of B124 MAIN B124 MAIN BOARD ...

Page 51: ......

Page 52: ...35 RETAINING RING 450 BOARD ASSY PNL 105 FERRITE CORE 136 CLIP SHAFT 500 CARRIAGE ASSY 106 RAIL CR 137 PULLEY DRIVE 501 FERRITE CORE 107 FOOT 138 PULLEY IDLE 502 HARNESS 108 DOUBLE SIDE TAPE 22X10 140 C B P TITE SCREW 3X8 F ZN 503 C C P TITE 3X8 F ZB 109 HOOK HOUSING 141 C C P TITE 3X8 F ZB 504 COVER CARRIAGE 110 COVER MAIN BOARD 142 C P SCREW 505 LAMP SET ASP N 111 BASE PLATE MAIN BOARD 150 MOTOR...

Page 53: ...No 1 133 141 131 137 150 140 500 400 401 160 For JAPAN 300 134 136 103 101 104 100 135 153 132 135 102 141 105 108 141 130 106 112 201 107 107 109 109 138 151 152 111 450 200 110 113 A A 140 140 140 140 120 142 140 Perfection 1240U PHOTO No 01 Rev 01 10244 140 140 See next page 142 GT 7700U Perfection 1240U ...

Page 54: ...ection 1240U Revision A Appendix Parts List and Explode Diagrams 54 Figure 7 3 Exploded Diagram No 2 503 507 502 505 509 506 501 504 508 503 Perfection 1240U PHOTO No 02 Rev 01 10244 510 GT 7700U Perfection 1240U ...

Page 55: ...G 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 P TITE SCREW 3X8 F ZN 815 LABEL CAUTION TPU 816 LABEL UL B 820 FILM HOLDER 821 FILM HOLDER B 822 FILM HOLDER C 823 FILM HOLDER 35 824 LABEL FILMHOLDER ...

Page 56: ...d Diagram for TPU 56 7 5 Exploded Diagram for TPU Figure 7 4 Exploded Diagram for TPU 808 B 814 B A 807 800 801 802 A 809 809 805 806 811 811 811 816 FOR EAI 804 815 810 809 810 809 813 813 812 803 Perfection 1240U PHOTO FILM ADAPTER No 04 Rev 01 10244 ...

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