Epson GT-1200 Service Manual Download Page 1

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EPSON

EPSON France S.A.

SERVICE MANUAL

GT-1200

PRODUIT

Summary of Contents for GT-1200

Page 1: ...EPSON EPSON EPSON France S A SERVICE MANUAL GT 1200 PRODUIT ...

Page 2: ...SERVICE MANUAL Color Image Scanner EPSON GT 12000 4008511 ...

Page 3: ...the contents of this manual However should any errors be detected SEIKO EPSON would greatly appreciate being informed of them n The above not withstanding SEIKO EPSON CORPORATION can assume no responsibility for any errors in this manual or the consequences thereof EPSON is a registered trademark of SEIKO EPSON CORPORATION General Notice Other product names used herein are for identification purpo...

Page 4: ...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 NUMBER RATING PL...

Page 5: ...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 Provides Epson approved methods for adjustment CHAPTER 6 MAINTENANCE Provides preventive maintenance procedures...

Page 6: ...REVISION STATUS Rev Date Page s Contents A 1997 10 20 All First release ...

Page 7: ... 6 1 5 1 Switch Specification 1 6 1 5 2 LED Specification 1 6 1 5 3 Switch Setting 1 7 1 5 4 Error Indication 1 7 1 5 5 Readable Area 1 8 1 5 6 Transportation Screw 1 8 OPERATING PRINCIPLES 2 1 GENERAL DESCRIPTION 2 1 2 2 MECHANISM OPERATING PRINCIPLES 2 2 2 3 ELECTRICAL CIRCUIT OPERATIONS 2 3 2 3 1 Control Circuit Operation 2 3 2 3 2 Power Supply Circuit Operation 2 5 ...

Page 8: ...N Board 3 9 DISASSEMBLY AND ASSEMBLY 4 1 OVERVIEW 4 1 4 1 1 Tools 4 1 4 1 2 Screws 4 1 4 2 DISASSEMBLY PROCEDURES 4 2 4 2 1 Electrical Circuit Removal 4 3 4 2 1 1 EPROM Replacement 4 3 4 2 1 2 MAIN B054PSH Board Removal 4 4 4 2 2 Scanner Body Disassembly 4 5 4 2 2 1 Upper Housing Removal 4 5 4 2 2 2 Scanner Mechanism Removal 4 6 4 2 3 Scanner Mechanism Disassembly 4 7 4 2 3 1 Panel Board Assembly ...

Page 9: ... Assembly Removal 4 17 4 2 3 9 AF Motor Assembly Installation 4 18 4 2 3 10 Option Frame Assembly Removal 4 19 ADJUSTMENT 5 1 OVERVIEW 5 1 MAINTENANCE 6 1 OVERVIEW 6 1 6 1 1 Cleaning 6 1 6 1 2 Lubrication 6 1 APPENDIX 7 1 OVERVIEW 7 1 7 1 1 Connector Pin Assignment 7 1 7 1 2 Connector Summary 7 1 7 2 COMPONENT LAYOUT 7 6 7 3 CIRCUIT DIAGRAMS 7 8 7 4 EXPLODED DIAGRAMS 7 10 ...

Page 10: ...PRODUCT DESCRIPTIONS C H A P T E R 1 ...

Page 11: ...8 B6 level with Focus control q Optional unit enhancing the function of the unit n Transparency Unit n Duplex scanning ADF Automatic Document Feeder 1 2 SPECIFICATION GENERAL Type Flat bed color image scanner Scanning Method Sub Scanning mirror movement system Photoelectric Device Color CCD Line sensor Color Separation Color filter separation Light Source Xe Gas Cold Cathode Fluorescent Lamp Scann...

Page 12: ...C I B8 B6 level with Focus control ELECTRICAL SPECIFICATION Power supply voltage 120 V version Rated voltage AC100 120 V 10 220 240 V version Rated voltage AC220 240 V 10 Rated frequency range 50 60 Hz 49 5 60 5 Hz Power consumption Approximately 60 W without an optional unit Maximum 75 W with an optional unit Insulation resistance 10 M W at 500 VDC between AC line and chassis Dielectric strength ...

Page 13: ...itions Should be kept away from extreme dust Illumination Operation under direct sunlight or near strong light source should be avoided DOCUMENT Reflective type Smooth surface such as a printing and photograph Transparency type Reversal film Negative film Note The optional transparency unit must be used PHYSICAL DIMENSIONS AND WEIGHT Dimensions 656 W x 458 D x 170 mm H See Figure 1 1 Weight Approx...

Page 14: ...andshake BUSY ACK handshaking n Signal TTL level n Connector 36 pins Amphenol q SCSI interface n Function Conforms to ANSI Standard X3 131 1986 n Electrical specification Conforms to ANSI Standard X3 131 1986 TTL compatible level n Connector 50 50 pin Amphenol n Terminator Internal terminator Switches between active and inactive n SCSI ID Set with an internal rotary switch Range 0 7 ...

Page 15: ...ting Set Brightness ESC Li Set Gamma Correction ESC Zi Download Gamma Table ESC zi d0 d1 d255 Set Sharpness ESC Qi Image Processing Set Digital Halftoning ESC Bi Set Auto Area Segmentation ESC si Download Dither Pattern ESC b I I j d j2 Set Color Correction ESC Mi Download Color Correction ESC m d1 d2 d9 Set Threshold ESC t Table 1 3 Control Code Summary continued Category Command Name Code Auxili...

Page 16: ...he back of the scanner Alternates the internal terminator setting between Connected and Disconnected when the SCSI interface is in use Note The factory default setting for this switch is On Connected 1 5 2 LED Specification This scanner has the following 3 LED indicators q OPERATE n Indicates the scanner s power On Off status It is on when the scanner power is on q READY n n Comes on when the scan...

Page 17: ...ot Available Not effective Not used CHECK POINT ü ü ü ü Do not set the ID number that is already assigned to other SCSI device q Terminator switch Setting Note ON Connects to the terminal resistor Factory default setting OFF Disconnects from the terminal resistor CHECK POINT ü ü ü ü Be aware that the terminator switch must be set according to the scanner location on the daisy chain 1 5 4 Error Ind...

Page 18: ...imum Readable Area 1 5 6 Transportation Screw A transportation screw is attached to the left side of the scanner viewed from the front Fastening the screw fixes the CR to protect the scanner from the shock while the scanner is transported or moved Be sure to turn the screw to the unlocking position Described in the figure below before turning the scanner power on L o c k i n g p o s i t i o n s e ...

Page 19: ...OPERATING PRINCIPLES C H A P T E R 2 ...

Page 20: ...he lens unit is set movable and driven by the specified motor Since the separate units in the mechanism such as the lamp light source and the mirrors move at their own speed for reading the incident distance of the reflected light from the document to the CCD sensor is kept constant The control circuit board and the power supply circuit board are stored in the separate shield compartment Since it ...

Page 21: ...ction mirror unit and the second reflection mirror unit move independently at their own speed Therefore the length of the incident light reflected from the document to the CCD sensor is kept constant Otherwise excluding the fixed L1 and L2 LV1 and LV2 keep changing to make the incident light length L constant Drive from the stepping motor moves each mirror unit via the wires The CCD sensor and the...

Page 22: ...tion on a black and white basis n Numbers of image correction such as gamma correction color correction halftoning correction They are carried out according to the settings on the host side After passed these processes image data is finally output to the host C C D C P U I C 1 3 H D 6 4 1 3 0 0 3 T F M P X A D I C 2 A D 9 8 0 7 R G B 1 2 b i t I C 2 4 M E R C U R Y I C 2 8 G G I F I C 1 E P R O M ...

Page 23: ...MX4 IC7 9 IC10 12 Line correction memory Buffer memory PSRAM 1M IC8 23 RGB image memory ROM 1M IC1 Firmware memory B054ISN BOARD Name Location Description CCD sensor ILX734K IC1 Color CCD line sensor Effective pixel 10500x3 lines Single side reading system Shutter function ADC AD9807 IC2 A D converter processing IC Minimum resolution 12 bit B054SUB BOARD This is a relay board a module is in the sh...

Page 24: ... Pin 2 Through these flows the positive and negative AC current are separately charged in the smoothing capacitors C11 and C32 respectively and the doubled VDC approximately 250 VDC equivalent to the input voltage of the 200V line is produced At power on the control circuit IC2 is activated by the full wave rectifying system Then if the input voltage is 100 VDC line level the system is automatical...

Page 25: ...TROUBLESHOOTING C H A P T E R 3 ...

Page 26: ...dy The error is cleared by the correct command parameter Communication Error LED Status Cause Operation Condition READY ERROR Wrong procedure operation is detected in communication In case of SCSI communication stops for over 30 seconds in any phase other than bus free phase The lamp goes off and the scanner stops operating Remedy Turn the scanner Off and back On or press the RESET switch Fatal Er...

Page 27: ... position HP sensor Lens CCD B054SUB board CN4 Pin 1 Signal Pin 2 GND H In the home position L Off the home position CAUTION Be careful not to short circuit the signals while checking them 3 1 2 2 Check Points for Abnormal Phenomenon See the table below which shows the abnormal phenomenon typically occurs Table 3 1 Abnormal Phenomenon Abnormal Phenomenon Description Flowchart to refer The scanner ...

Page 28: ...e outputs all corrects A Replace the B054PSH board Yes No Connect them properly Replace the fuse Has the fuse blown again at turning on the scanner A Replace the B054PSH board Disconnect the connector cables from the connectors CN2 4 5 6 7 on the B054SUB board No Yes A Check the following motors for the correct resistance Motor for mirror 15 0 Ω Motor for focus 15 5 Ω Are the resistances correct C...

Page 29: ... screw No Yes No Yes Is the transportation screw set to the locking position Is the correct voltage output Replace the B054PSH board A Yes No No Yes A Check the following motors for the correct resistance Motor for mirror 15 0 W Motor for focus 15 5 W Are the resistances correct Check the motor driver ICs on the B054MAIN board Motor for mirror Check if the resistance between Pin 8 6 of IC4 3 and t...

Page 30: ...d for the HP signal level Is the signal level HIGH when the CR is at the home position Replace the B054MAIN board No Yes Is the transportation screw set to the locking position Flowchart 3 4 Phenomenon Lamp does not light Start Replace the B054MAIN board Does the lamp light normally Lamp is defective No Yes Replace the inverter board on the CR Does the lamp light normally Inverter board is defecti...

Page 31: ... Replace the interface cable Does the scanner operate normally Replace the I F cable Flowchart 3 6 Phenomenon Communication Error SCSI SCSI SCSI SCSI is indicated Replace the B054MAIN board Are the settings correct Set them correctly No Yes Replace the I F cable I F cable is defective No Yes Does the scanner operate normally Start Check the SCSI for the following settings Terminator setting SCSI I...

Page 32: ...ective Clean the glass No Yes Clean the mirror No Yes Replace the B054MAIN board and perform a test scanning Is the image normal The mechnasim is defective Needs replacing No Is the glass free of stain and foreign matter Wipe the mirror with a dry clean cloth only Is the mirror free of stain and foreign matter Yes ...

Page 33: ...ectrical circuit board 3 1 3 1 Power Supply Board B054PSH Board Phenomenon Check Points Abnormal voltage 5VDC is not output Check IC51 TL494 Signal waveform output from Pin 8 11 chopping waveform Abnormal voltage 24 VDC is not output Check the Switching FET Q1 Waveform at the drain Abnormal voltage 15 VDC in not output Check IC52 78M15 Signal waveform output from Pin 1 ...

Page 34: ...e signal waveforms output from the following pins Pin 7 for 5V input Pin 6 for PWRES output No operation at all ROM access is bad Check the CPU IC13 for the ROM access signal waveforms output from the following pins Pin 104 for CS0 signal Pin 78 for RD signal No operation at all CPU is defective Check the clock signal waveform input to the following pin Pin 75 for XTAL input ...

Page 35: ...home position Check if the signal waveform input to Pin 91 of CPU IC13 changes in accordance with the CR position Fatal Error Lamp does not light Check the following for the lamp signal output Output from Pin 166 of ASIC IC24 Emitter waveform at Tr Q1 Fatal Error White standard level is not read properly Check ASIC IC28 Signal waveform output from Pin 161 Communication Error Bi directional I F SCS...

Page 36: ...DISASSEMBLY AND ASSEMBLY C H A P T E R 4 ...

Page 37: ...r weighs as heavy as approximately 20 kg be sure to perform servicing on a heavy duty level table n n n n Make sure that the CR fixing knob is set to the locking position to fix the CR by the rear before packing the scanner 4 1 1 Tools Tools used for servicing are as listed in the table below Table 4 1 Tool List Description Availability SE Part No Exclusive adjusting tools Leveling tools EPSON exc...

Page 38: ...t Remova Section 4 2 1 EPROM Replacement Section 4 2 1 1 MAIN Power Supply Board Removal Section 4 2 1 2 Scanner Body Disassembly Section 4 2 2 Upper Housing Removal Section 4 2 2 1 Mechanism Removal Section 4 2 2 2 Panel Board Assembly Removal Section 4 2 3 1 Sub Board Assembly Remvoal Section 4 2 3 2 HP Sensor CR Removal Section 4 2 3 3 Motor CR Assembly Removal Section 4 2 3 4 Glass Frame Assem...

Page 39: ... out the compartment from the scanner to remove CHECK POINT ü ü ü ü For easy removal insert a driver or equivalent into the bail lock of the interface and pull it 4 2 1 1 EPROM Replacement In case of EPROM replacement remove the ROM cover attached on the board unit 1 Remove the board unit See Section 4 2 1 2 Remove 1 screw No 3 fixing the ROM cover and remove the cover 3 Remove the EPROM from the ...

Page 40: ... MAIN board Ÿ 6 screws No 3 Fixing the board along the edges Ÿ 6 screws No 9 Securing the I F connector Ÿ 2 screws No 10 Securing the optional I F connector 5 Power supply board assembly removal Remove the connector cables from the connector CN1 on the power supply board assembly and the connector CN5 on the MAIN board assembly 6 Remove 6 screws No 3 securing the power supply board assembly and re...

Page 41: ... the screw caps Using tweezers pinch them out prior to removing the screws 4 Lift up the upper housing to remove it CHECK POINT ü ü ü ü When installing the upper housing make sure that the optical plate is installed on the specified position O p t i c a l P l a t e I n n e r S i d e o f t h e U p p e r H o u s i n g S c r e w C a p B e c a r e f u l n o t t o d a m a g e t h e u p p e r h o u s i ...

Page 42: ...ower housing at the bottom Then remove the mechanism from the lower housing CHECK POINT ü ü ü ü n n n n Note the following when installing the scanner mechanism 1 Remove the key tops for the power switch and reset switches from the lower housing 2 Install the scanner mechanism to the lower housing 3 Reinstall the key tops n n n n Place the removed mechanism on flat stable surface Screws No 1 Front...

Page 43: ...anner parts unless specified to do so 4 2 3 1 Panel Board Assembly Removal 1 Remove the scanner mechanism See Section 4 2 2 2 2 Turn the mechanism over and place it on a flat surface 3 Disconnect all connector cables from the panel board assembly 4 Remove 2 screws No 6 securing the panel board assembly and remove it CHECK POINT ü ü ü ü Unit arrangement at the bottom of the mechanism is as shown be...

Page 44: ...n a flat surface 3 Disconnect all connector cables from the sub board assembly B054SUB board 4 Remove 2 screws No 3 securing the board to the bracket and remove the sub board CHECK POINT ü ü ü ü When placing the scanner up side down lay a clean soft cloth under the scanner to protect the glass surface Screws No 6 Sub Board Assembly Figure 4 11 Sub Board Assembly Removal ...

Page 45: ...mechanism See Section 4 2 2 2 2 Move the carriage mirror assembly away from the HP home position 3 Turn the mechanism over and place it on a flat surface 4 Release the hook fixing the HP sensor at the bottom of the mechanism and remove the HP sensor unit Then disconnect the connector cable from the removed HP sensor HP Sensor AF Sub Board Assembly Panel Board Assembly HP Sensor CR Motor CR Figure ...

Page 46: ...n spring from the tension lever assembly then remove 1 screw No 6 to remove the tension lever assembly 4 Disconnect the cable for the motor from the relay connector and remove 4 CR damper shafts B No 8 securing the motor then remove the motor CHECK POINT ü ü ü ü When assembling hook the spring to the tension lever assembly first then fasten the screw Screw No 6 CR Damper Shafts B No 8 Torsion Spri...

Page 47: ...each of the specified feet of the scanner sit on the corresponding stage 2 Set the adjuster under the rubber foot in the front right corner of the scanner bottom aligning the center of the adjuster with the one of the rubber foot Make sure that you can see the groove on the adjuster when it is set 3 Hold the base of the adjuster with a hand and spin the table to make it reach the bottom of the sca...

Page 48: ...e glass frame assembly by the front edge Note Directions are described when the scanner is viewed from the front CAUTION When reinstalling the glass frame assembly refer to Section 4 2 3 5 1 to set the glass frame assembly on the correct position Failure in this operation will cause the CR to start scanning at a wrong position Screws No 1 Screws No 4 Screws No 3 Front Side of the Scanner Glass Fra...

Page 49: ...e rear frame Glass edge is in contact with the bushes with this operation 2 Keeping the glass frame assembly in contact with the bushes move the assembly left to push it against the positioning bump on the top surface of the left side frame 3 When the glass frame assembly is correctly positioned fix it with 9 screws CHECK POINT ü ü ü ü When installing the glass frame assembly ensure that 4 glass f...

Page 50: ...bly See Section 4 2 3 5 2 Move the CR to the position indicated in Figure 4 19 The position where the front and rear frames are indented 3 Remove 2 screws No 6 securing the carriage mirror cover and slide the cover toward the rear side of the scanner to release the engagement with the hook on the carriage Then lift up the cover and remove it Continued to the following page Screws No 6 CR Mirror Co...

Page 51: ...move 2 screws No 6 securing the inverter board assembly 7 Slide the inverter board assembly toward the front side of the scanner to release the engagement with the hook on the carriage Then remove the inverter board CHECK POINT ü ü ü ü When assembling make sure that the cover is securely engaged with the hook on the carriage H o o k C o v e r C a r r i a g e B a s e R e a r F r o n t Lift up to re...

Page 52: ...curing the AF drive mechanism cover which covers the AF drive mechanism and remove the cover 3 Rotate the screw pulley at the end of the screw shaft a thread shaft manually to move the detection flag to the area where it does not overlap with the HP sensor 4 Release the hook fixing the HP sensor and remove it then disconnect the cable from the sensor Screws No 3 Cover Figure 4 20 AF Drive Mechanis...

Page 53: ...late and fixing tension plate to loosen the timing belt 4 Disconnect the cable for the motor from the relay connector then remove 4 screws No 4 securing the motor and remove the motor Screws No 6 Tension Plate Assembly Fixing Tension Plate Spring Plate Figure 4 22 Tension Plate Assembly Removal Screws No 4 Motor Assembly AF Figure 4 23 AF Motor Assembly Removal CAUTION You are required to set the ...

Page 54: ...attached to the screw shaft end manually loosen the screw fixing the tension plate assembly to tense the belt then fasten the screw again CAUTION When fixing the tension plate assembly be careful not to apply excessive tension since it may cause the motor to rotate improperly F i x i n g T e n s i o n P l a t e S p r i n g P l a t e T e n s i o n P l a t e A s s e m b l y S c r e w s N o 6 Figure ...

Page 55: ...ADJUSTMENT C H A P T E R 5 ...

Page 56: ...v A 5 1 5 1 OVERVIEW This scanner requires no adjustment for any service such as disassembling and assembling the scanner including part replacement is provided within the specification in Chapter 4 Disassemble and Assembly ...

Page 57: ...MAINTENANCE C H A P T E R 6 ...

Page 58: ... these may deteriorate plastic and rubber parts q Outer cases Wipe stain off with a clean cloth which is moistened with water and then squeezed tightly To remove severe stain use neutral detergent q Document glass Remove dust and paper debris with a dry clean cloth If stain is severe or foreign matter is stuck use a cloth absorbed with neutral detergent If trace is left wipe it off well with a dry...

Page 59: ...APPENDIX C H A P T E R 7 ...

Page 60: ...uit boards are summarized in the table below Table 7 1 Connector Summary Board CN No Function Ref B054MAIN CN1 3 For connection with SCSI I F GT 9500 CN2 For connection with Bi directional I F GT 9500 CN4 For connection with B054SUB Board In a card edge format Page 7 2 CN5 Power supply line from the B054PSH board Page 7 3 CN6 For connection with the option Page 7 3 B054PSH CN1 For connection with ...

Page 61: ...S Home sensor Mirror Signal A29 MMB Motor Mirror Phase B A30 MMBX Motor Mirror Phase B A31 GND GND No Signal Name Function B1 5V Power supply 5V B2 12V Power supply 12V B3 ADD1 Address 1 B4 STLN Start line signal for ADC B5 CSAP Chip select ADC B6 SMP Sample hold signal for ADC B7 SB Shutter Blue for CCD B8 SR Shutter Red for CCD B9 CK Clock signal for CCD B10 AD0 Image data 0 after AD conversion ...

Page 62: ...AIN CN6 No Signal Name Function 1 IN1 TPU HOME Select 2 IN2 TPU COVER Select 3 IN3 Not used 4 OU5 Lamp control signal 5 IN4 Not used 6 5 Power supply 5V 7 GND GND 8 24 Power supply 24V 9 SDAT Motor drive serial data for TPU 10 SCK Transfer clock for TPU 11 LOD Latch pulse for TPU 12 SEL Select signal for TPU 13 5 Power supply 5V 14 GND GND 15 24 Power supply 24V 16 24 Power supply 24V 17 GND GND 1...

Page 63: ...er AD conversion 28 AD5 Image data 5 after AD conversion 29 AD6 Image data 6 after AD conversion 30 AD7 Image data 7 after AD conversion 31 AD8 Image data 8 after AD conversion 32 AD9 Image data 9 after AD conversion 33 AD10 Image data 10 after AD conversion 34 AD11 Image data 11 after AD conversion 35 GND GND B054SUB CN3 No Signal Name Function 1 24 Power supply 24V 2 24 Power supply 24V 3 24 Pow...

Page 64: ...Home sensor Mirror Signal 2 GND GND 3 HMM P Home sensor Mirror Power supply B054SUB CN7 No Signal Name Function 1 MMB Motor Mirror Phase B drive signal 2 MMA Motor Mirror Phase A drive signal 3 MMBX Motor Mirror Phase B drive signal 4 MMAX Motor Mirror Phase A drive signal ...

Page 65: ...GT 12000 Appendix Rev A 7 6 7 2 COMPONENT LAYOUT Figure 7 2 Component Layout B054MAIN Board ...

Page 66: ...GT 12000 Appendix Rev A 7 7 Figure 7 3 Component Layout B054PSH Board ...

Page 67: ... L I D 2 L O D I D 3 E O L I D 2 L O D I D 3 I N T I F S E L I D S E L I D S C K O 1 3 A D S D A T C 2 4 0 1 U T H 6 C V 5 G N D 1 T R G 2 O U T 3 D C H 7 V 8 R S T 4 I C 2 9 N J M 5 5 5 C 6 9 0 1 U C 6 8 0 1 U R 1 8 1 4 7 0 R 1 8 0 3 3 K R 1 9 4 1 0 B 3 0 B L M 1 2 1 B 3 1 B L M 1 2 1 B 3 2 B L M 1 2 1 B 3 3 B L M 1 2 1 B 6 0 B L M 1 2 1 B 6 1 B L M 1 2 1 B 6 2 B L M 1 2 1 B 6 3 B L M 1 2 1 C 8 8...

Page 68: ... 4 7 0 0 P Q 2 C 4 4 0 8 R 1 5 5 1 0 R 1 1 1 3 K Q 3 A 1 0 1 5 Y R 3 1 1 M 0 5 W R 1 9 1 0 K Q 3 1 K 1 4 8 2 F G C 5 2 2 0 0 P C 6 2 2 0 0 P F G C 2 0 1 U C 3 1 0 0 0 P C 4 1 0 0 0 P 1 2 3 4 L 2 H F 2 8 3 5 8 0 2 Y 2 R 0 R 3 2 3 9 K C 3 1 1 0 0 0 P R 2 9 1 5 M 0 5 W R 2 2 1 5 M 0 5 W R 1 4 5 1 0 R 1 3 4 7 K R 1 6 2 7 0 2 1 3 I C 1 T L 4 3 1 C 1 2 1 0 0 U 2 5 V R 3 3 1 0 0 K 1 5 1 4 C 5 5 0 3 3 U C...

Page 69: ...GT 12000 Appendix Rev A 7 10 7 4 EXPLODED DIAGRAMS Figure 7 6 Exploded Diagrams 1 ...

Page 70: ...GT 12000 Appendix Rev A 7 11 Figure 7 7 Exploded Diagrams 2 ...

Page 71: ...SERVICE MANUAL ADF Auto Document Feeder 4008512 ...

Page 72: ...the contents of this manual However should any errors be detected SEIKO EPSON would greatly appreciate being informed of them n The above not withstanding SEIKO EPSON CORPORATION can assume no responsibility for any errors in this manual or the consequences thereof EPSON is a registered trademark of SEIKO EPSON CORPORATION General Notice Other product names used herein are for identification purpo...

Page 73: ...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 NUMBER RATING PL...

Page 74: ...e 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 Provides Epson approved methods for adjustment CHAPTER 6 MAINTENANCE Provides preventive maintenance procedures a...

Page 75: ...REVISION STATUS Rev Date Page s Contents A 1997 10 20 All First release ...

Page 76: ...pty Sensor Circuit 2 13 2 1 2 4 Paper Feeding Motor Encoder Sensor Circuit 2 14 2 1 2 5 Registration Sensor Circuit 2 14 2 1 2 6 Sensor Circuits 2 15 2 1 2 7 Switch Circuits 2 16 2 1 2 8 Reset Circuit 2 16 2 1 2 9 Paper Feed Motor Driver Circuit 2 17 2 1 2 10 Transportation Paper Eject Reverse Motor Driver Circuits 2 18 2 1 2 11 Feeding Solenoid Reverse Solenoid Sensor Circuits 2 19 2 1 2 12 Rush ...

Page 77: ...or Solenoid Internal Coil Resistance 3 5 3 1 2 1 Transportation Motor Check Points 3 5 3 1 2 2 Paper Eject Reverse Motor Check Point 3 6 3 1 2 3 Solenoid Check Point 3 6 3 1 2 4 Paper Size Sensor 3 6 DISASSEMBLY AND ASSEMBLY 4 1 OVERVIEW 4 1 4 1 1 Tools 4 1 4 1 2 Screws 4 1 4 2 DISASSEMBLY PROCEDURE 4 2 4 2 1 Paper Feed Tray Removal 4 2 4 2 2 Control Board Unit Removal 4 3 4 2 3 Transportation Bel...

Page 78: ... 5 1 5 1 2 1 Flapper Solenoid Installation Position Adjustment 5 2 5 1 2 2 Separation Plate Gap Adjustment 5 3 5 1 2 3 Belt Tension Adjustment 5 4 5 1 2 4 Magnet Catch Installation Position Adjustment 5 4 5 1 2 5 Micro Switch Installation Position Adjustment 5 5 5 1 2 6 Skew Correction Adjustment 5 6 5 1 3 Electrical Adjustment 5 7 5 1 3 1 Sensor Adjustment 5 8 5 1 3 2 EEPROM Initialize and Sensor...

Page 79: ...MAINTENANCE 6 1 OVERVIEW 6 1 6 1 1 Cleaning 6 1 6 1 1 1 Cleaning Points 6 2 6 1 2 Lubrication 6 7 6 1 3 Adhesion 6 15 APPENDIX 7 1 CONNECTOR TABLE 7 1 7 2 EXPLODED DIAGRAMS 7 3 ...

Page 80: ...PRODUCT DESCRIPTIONS C H A P T E R 1 ...

Page 81: ...ge for each scanning operation q Supports duplex feeding function Document is automatically reversed for scanning 1 2 PRODUCT DESCRIPTION BASIC SPECIFICATION Type Page transportation duplex scanning type Document transportation Document center aligning Fed faced up from the bottom Face up ejection Document replacement time 1 2 seconds A4 LT landscape Loading plural sizes Unavailable Size of the do...

Page 82: ...y 50 sheets 80 g m 2 A4 landscape portrait LT landscape portrait or smaller 30 sheets 80 g m 2 B4 LG or larger Ejecting capacity 100 sheets Applicable document Paper Type High quality paper Average quality paper Ink jet paper fine super fine equivalent Bond paper Paper thickness 50 127 g m 2 Document whose thickness is more than 110g m 2 is applicable in the normal condition only Normal condition ...

Page 83: ... ENVIRONMENTAL CONDITION Temperature Operation 5 35 C Storage 25 60 C Humidity Operation 10 80 Storage 10 85 Without condensation Resistance to vibration Operation 0 2G 5 55Hz in X Y Z directions Storage 2G 5 55Hz in X Y Z directions Dropping test Height 62 cm 24 2 inch When packed RELIABILITY Paper feeding life 100 000 sheets Paper ejecting life 100 000 sheets Hinge 100 00 close motions or more S...

Page 84: ...Weight 16Kg or less Dimensions W x D x H 601 x 529 x 122 mm 23 6 x 20 8 x 4 8 inch with the extension tray stored 6 0 1 m m 2 3 6 i n c h 5 2 9 m m 2 0 8 i n c h 1 2 2 m m 4 8 i n c h 1 4 7 m m 5 8 i n c h Figure 1 2 External Dimensions of the ADF ...

Page 85: ...OPERATING PRINCIPLES C H A P T E R 2 ...

Page 86: ...tely As you follows the steps make sure that you refer to Figure 2 1 for exact locations of the parts and their functions E m p t y S e n s o r S e p a r a t i o n R o l l e r D o c u m e n t S h u t t e r D o c u m e n t W e i g h t H a l f m o o n R o l l e r P a p e r F e e d T r a y P a p e r F e e d R o l l e r R e g i s t r a t i o n R o l l e r R e g i s t r a t i o n S e n s o r T i m i n ...

Page 87: ...gistration sensor s coming on is called registration operation The transportation motor and the paper eject reverse motor also rotate forward to perform dummy ejection to prevent a remaining document from jamming when the ADF is feeding another document This is performed for every feeding motion no matter a document is remaining in the ADF or not 3 After the registration operation is carried out t...

Page 88: ... feeding complete signal to the scanner 7 While scanning is proceeding the paper feed motor starts rotating forward to pick up and transport the document The motor stops when the registration sensor comes on 8 After the registration operation is carried out the paper feed motor rotates forward to transport the document to the position where the timing sensor comes on and the pre feeding operation ...

Page 89: ...ports the document and stops rotating when the rear edge of the document passed the document stopper In case the empty sensor goes off while the document is transported the shutter solenoid goes off The ADF continues to eject the scanned document 12 Transportation motor rotates backward to feed back the fed document to align it with the document stopper causing impact then the transportation motor...

Page 90: ...tarts ejecting the scanned document The transportation motor and the paper eject reverse motor rotate forward for this operation 16 The paper eject reverse motor reduces its rotational speed when the paper eject reverse sensor is near off condition to output the document to the output tray slowly The paper eject reverse motor then stops when the paper eject reverse sensor goes off 17 The ADF sends...

Page 91: ...led registration operation The transportation motor and the paper eject reverse motor also rotate forward to perform dummy ejection to prevent a remaining document from jamming when the ADF is feeding another document This is performed for every feeding motion no matter a document is remaining in the ADF or not 3 After the registration operation is carried out the paper feed motor starts rotating ...

Page 92: ...ops and the flapper solenoid goes off to stop transporting the document With the document set for scanning the ADF sends the paper feeding complete signal to the scanner and the scanner starts scanning 7 The paper feed motor starts rotating forward to pick up and transport another document from the paper feed tray The motor stops when the registration sensor comes on 8 After the registration opera...

Page 93: ... from the paper eject reverse mechanism to the scanning position on the platen glass The paper eject reverse motor stops when the paper eject reverse sensor goes off When the document bumps against the paper stopper transportation motor stops and the flapper solenoid goes off to stop transporting the document With the document set for scan the ADF sends the paper feeding complete signal to the sca...

Page 94: ...aper eject reverse mechanism to wait for the scanned document to be ejected completely In case the empty sensor goes off while transporting the shutter solenoid goes off 15 After the scanned document is ejected the flapper solenoid comes on to switch the paper path to the paper eject reverse mechanism side The transportation motor and the paper eject reverse motor rotate forward to transport the f...

Page 95: ...orward to transport the scanned document to the paper eject reverse mechanism and the flapper solenoid comes on to switch the paper path to the paper eject reverse mechanism side 19 When the paper eject reverse sensor comes on the transportation motor stops and then the paper eject reverse motor stops to hold the document in the paper eject reverse mechanism 20 The transportation motor rotates bac...

Page 96: ...e sensor is near off condition rotational speed of the paper eject reverse motor is reduced to eject the document slowly to the output tray The transportation motor stops when the paper eject reverse sensor goes off 23 The paper eject reverse motor stops after the document is ejected to the output tray and the ADF sends the operation complete signal to the scanner Figure 2 39 Reverse Feeding Step ...

Page 97: ... the signal types reversed or non reversed then it outputs the signals to the scanner from DO1 2 signals RI1 and RI2 sent from the scanner are combined into 1 signal and output from the RO1 q Parallel transmission Signals sent from the CPU is output at the open collector via IC1 and IC3 Signals from the scanner are transferred to the CPU via the pull up resistor TXD 1 2 3 4 5 6 7 8 9 TXD RXD RXD D...

Page 98: ...he RC noise filter 1 2 3 5V DWVR GND 5V 10K R11 GND C41 0 01 uF GND TP24 AN17 63 IC12 CPU C62 0 01 uF CN1 Figure 2 43 Document Width Detection Circuit Block Diagram 2 1 2 3 Document Sensor Empty Sensor Circuit A photo interrupter sensor located at the bottom of the paper feed tray is used to detect document The ADF determines whether or not it continues pre feeding based on the signal sent from th...

Page 99: ...ce the registration sensor is a reflex type sensor it detects paper empty condition by emitting infrared light from the LED toward the mirror and receiving the light reflected on the mirror The voltage input to the sensor is divided by R55 and R56 and 1 3 of the original level is input to the AD converter of the CPU Actually it is regulated to 5 V by D2 Analog data for the input voltage is output ...

Page 100: ...ce voltage 2V If the input voltage is higher than the reference voltage it means the paper empty condition and the compactor outputs a Low signal to the CPU Since sensors are generally produced with uneven sensitivities the CPU adjusts the input voltage from the sensor to the specified level When the ADF is turned on under the paper empty condition the input voltage analog data from the sensor is ...

Page 101: ...ZD4 5V TP31 R24 10K Q7 5V R13 10K TP32 Q5 5V R6 10K TP30 ZD6 1 2 FD 24V TGOD CN4 PGND C63 0 01uF PGND ZD5 IC12 CPU P25 P26 P27 Figure 2 48 Open Close Sensor Circuit Black Diagram 2 1 2 8 Reset Circuit This circuit produces reset signals sent to the CPU and the gate array IC8 has the following 2 functions q Power on reset at power on time q Resets when 5 V is at an abnormally low level After power ...

Page 102: ...to the motor status detected by the slid plate The signals for rotation direction and stop control fed back to the CPU are transferred to the gate array via data bus where the signals are combined and decoded into one and output from Pin 65 Pin 68 as a control signal Since this motor is a phase 2 DC motor the motor control HIC IC3 is finally output from Pin 2 24V C54 1uF CN3 2 1 DFM1 DFM2 PGND C37...

Page 103: ...egulate the current via the chopping regulator IC12 CPU G A PO4 IC4 TP8 GND R54 68K TP10 R51 13K PGND C7 0 1uF 13 14 15 16 9 11 8 10 5 4 C52 10uF CN4 GND 5V PGND IC13 A 16 17 18 19 16 A A B B 24V 24V 8 7 6 5 4 3 A B B 2 3 6 7 24V C33 100uF TP9 P04 P05 P06 P07 pA pA pB pB Vref1 Vref2 Td1 Td2 SG PG Reverse Motor Driver Circuit C50 100pF IC12 CPU G A PO4 IC4 TP7 GND TP6 R50 13K PGND C8 0 1uF 13 14 15...

Page 104: ...N5 CN3 Reverse Solenoid Feeding Solenoid PWM2 PWM1 Figure 2 52 Solenoid Driver Circuit Block Diagram 2 1 2 12 Rush Current Limitation Circuit The rush current limitation circuit consists of the limitation resistance and the FET which regulates the current level Through this circuit the level of the rush current which flows into the current regeneration condensers in the transportation and the pape...

Page 105: ...erence value for the paper eject reverse sensor sensitivity q Total amount of fed document To rewrite sensitivity values for the sensors listed above or initialize the EEPROM run the automatic adjustment program built in the ROM GND E2ROM 5V R75 10 5V D5 C56 100uF 5V D3 R42 22K R42 22K R42 22K R42 22K R9 10K GND R59 100K IC9 IC12 CPU DO CS SK DI P73 P14 P15 P13 59 51 52 50 4 1 2 3 R20 R21 R22 10K ...

Page 106: ...TROUBLESHOOTING C H A P T E R 3 ...

Page 107: ...nd Test Methods No No No No Test Mode Test Method 1 Single feeding mode Feed the paper in the single feeding mode and check the operation 2 Reverse feeding mode Feed the paper in the reverse feeding mode and check the operation 3 Single feeding without paper aging mode Without any document set the ADF performs single paper feeding motion at a high speed 4 Reverse feeding without paper aging mode W...

Page 108: ...and open and then close the either feeding cover or eject cover The test mode is set with this action Step 4 Press the push switch on the control board CHECK POINT ü ü ü ü If the paper jam error occurs open and close either feeding or eject cover to clear the error status 3 1 1 2 Reverse Feeding Test Mode With this test mode you can detect the defective part by setting the document including a bla...

Page 109: ...ard 3 1 1 4 Reverse Feeding Without Paper Aging Test Mode With this test mode you can detect the defective part by putting the ADF in the reverse feeding aging mode without setting any document Note that the abnormal phenomenon does not necessary determine the test mode to be performed Therefore Performing all test modes listed in Table 3 1 one by one in the listed order is recommended The test me...

Page 110: ... rotation for 400 m sec 4 Transportation motor Forward rotation for 400 m sec 5 Transportation motor Backward rotation for 250 m sec 6 Transportation motor Backward rotation for 400 m sec 7 Reverse Motor Forward rotation for 250 m sec 8 Reverse Motor Forward rotation for 400 m sec 9 Reverse Motor Forward rotation for 400 250 m sec 3 1 1 6 Solenoid Line Output Test Mode With this test mode you can ...

Page 111: ...the value because current is measured to check the motor condition only 3 1 2 1 Transportation Motor Check Points A 4 phase motor is used for the transportation motor The coil resistance between each coil is 1 1W 10 Figure 3 2 shows the internal connection of the transportation motor The connector is directly soldered onto the transportation motor See Figure 3 3 which shows pin configuration appea...

Page 112: ...or the correct resistance of the solenoids Table 3 3 Solenoid Resistance Solenoid Coil Resistance Shutter weight solenoid 28 W 10 Reverse solenoid 80 W 10 3 1 2 4 Paper Size Sensor Size of the document set in the ADF paper tray is detected by aligning the edge guide with the document The document width measured by the edge guides is converted into the corresponding sliding resistance which is fed ...

Page 113: ...DISASSEMBLY AND ASSEMBLY C H A P T E R 4 ...

Page 114: ... disassemble assemble the TPU are as listed below Tool Name Availability SE Part No Phillips screw driver No 2 Thickness gauge set F518 SE exclusive B776702201 4 1 2 Screws Types of screws used for the ADF are listed in the table below Make sure that you use the specified type and number of screws for each part Table 4 1 Screw List No Screw Type Specification Appearance Color 1 CBP M3x12 Silver 2 ...

Page 115: ...nit from the scanner body 2 Move the edge guides blue to the center 3 Remove 2 screws and remove the paper feed tray along with the extension tray 4 Turn the tray over and disconnect the connector cable for the paper size sensor from the relay connector Screws Paper Feed Tray Figure 4 1 Paper Feed Tray Removal Paper Feed Tray Reverse Side Disconnect this connector For paper size sensor Figure 4 2 ...

Page 116: ...4 4 for connector location indicated with the yellow broken lines 3 Remove 2 screws and remove the control board unit Shield Cover Screws with toothed washers Figure 4 3 Shield Cover Removal CHECK POINT ü ü ü ü When installing the control board unit make sure that the bottom edge of the board properly fits in the edge holder Screws Control Board Unit Remove the board from the edge holder Figure 4 ...

Page 117: ...p edge of the belt and pull it forward and remove the whole belt unit by pulling it upward CHECK POINT ü ü ü ü When reinstalling the transportation belt unit ensure that the drive transmission belt is properly engaged with the belt drive gear at the lower left Transportation Belt Unit Figure 4 5 Transportation Belt Unit Fixing Position Screw right fixing position Screw left fixing position Screws ...

Page 118: ...d in Figure 4 8 4 Disengage the belt from the pinion gear of the transportation belt drive motor 5 Disconnect 4 cables for the paper feed unit from the relay connector 6 Remove the paper feed unit from the housing Screws Screw fixing the GND line Paper Feed Unit Figure 4 7 Paper Feed Unit Removal 1 Screw Located inside the paper feed unit access cover Open the cover Figure 4 8 Paper Feed Unit Remo...

Page 119: ... the paper eject reverse unit and 1 screw securing the GND line 3 Disconnect 2 cables which connect the paper eject reverse unit to the connectors on the control board unit 4 Remove the paper eject reverse unit from the housing Screw fixing the GND line Screws Paper Eject Reverse Unit Figure 4 10 Paper Eject Reverse Removal ...

Page 120: ...e shield cover See Section 4 2 2 3 Disengage the belt from the motor pinion gear 4 Disconnect the cable from the motor then unhook the tension spring from the tension roller holder plate 5 Remove 3 screws securing the transportation belt drive motor and remove it Screws Transportation Belt Drive Motor Figure 4 11 Transportation Belt Drive Motor Removal ...

Page 121: ... 2 4 2 Loosen the screw and remove the harness cover 3 Release all cables from the cable hooks attached to the paper feed motor unit 4 Remove 4 fixing screws and remove the paper feed motor unit Screw Remove the harness cover Figure 4 12 Harness Cover Removal Screw See the figure below Remove all cables from the hooks Screw Screw Remove all cables from the hooks Screw Figure 4 13 Paper Feed Motor ...

Page 122: ...per guide viewed from the top Remove them through the holes on the top frame of the paper guide 3 Lift up the paper guide to release the cable from the hooks on the paper guide then remove the paper guide 4 Remove the fixing screws securing the registration sensor and the timing sensor and remove the sensors Paper Feed Unit Viewed from the bottom Paper Guide Paper Feed Unit Access Cover Figure 4 1...

Page 123: ... section describes how to remove the paper eject reverse motor unit from the paper eject reverse unit 1 Remove the paper eject reverse motor unit See Section 4 2 5 2 Remove 3 screws and remove the paper eject reverse motor unit Screw Screw Figure 4 16 Paper Eject Reverse Motor Unit Removal ...

Page 124: ...uide 3 Remove 4 screws including 2 shoulder screws on the left and remove the paper guide 4 Remove 1 fixing screw from the back of the removed paper guide and remove the paper eject sensor Screws Paper Eject Guide Figure 4 17 Paper Eject Guide Removal Shoulder Screws Screws Paper Eject Sensor at the back of the paper guide Paper Guide Figure 4 18 Paper Eject Sensor Removal CHECK POINT ü ü ü ü 2 of...

Page 125: ...ADJUSTMENT C H A P T E R 5 ...

Page 126: ...elow lists the adjustment items and the corresponding occasions Table 5 2 Mechanical Adjustment Items Adjustment items Occasions Flapper solenoid installation position adjustment Refer to Section 5 1 2 1 Flapper solenoid is removed Flapper solenoid is replaced Separation plate gap adjustment Refer to Section 5 1 2 2 Separation plate is removed Separation plate is replaced Belt tension adjustment R...

Page 127: ...elow You must make this adjustment under the following conditions q Flapper solenoid is removed q Flapper solenoid is replaced q Flapper is replaced 1 Set the solenoid manually to On condition induced condition 2 Keeping the solenoid On move the whole solenoid backward forward to make it meet the flapper rubber Gap between the flapper and rubber 0 0 5 mm and fasten 2 fixing screws to fix the flapp...

Page 128: ...ced q 2 screws fixing the plate are loosened q PF roller is replaced 1 Loosen 2 fixing screws securing the separation plate 2 Insert a thickness gauge between the bottom edge of the separation plate and the PF roller surface Make sure that the gauge is set at a right angle with the plate 3 Push the plate down onto the thickness gauge surface and fasten the fixing screws F i x i n g S c r e w t h i...

Page 129: ...from the front Timing Belt Belt Roller L Fixing Screw DF Support Plate Shoulder Screw M3 1 4 200 gf Tension Gage Figure 5 3 Belt Tension Adjustment 5 1 2 4 Magnet Catch Installation Position Adjustment This adjustment is made to install the magnet catch securely to a proper position after removing or replacing the magnet catch 1 Install the ADF to the scanner 2 With the ADF closed position the mag...

Page 130: ...adjustment under the following conditions q Micro switch is removed q Micro switch is replaced q DF open switch plate is released q DF open switch is replaced 1 With 1 fixing screw securing the DF open switch plate loosened mount the ADF onto the scanner Then open the ADF fully and start closing gradually 2 Monitoring the micro switch shift the DF open switch plate to the position where the micro ...

Page 131: ...ut image is skewed as shown below loosen the fixing screw in the hinge base R and move it toward B then fix it PC Monitor Output Image Right side upper q If the fed document output image is skewed as shown below loosen the fixing screw in the hinge base R and move it toward A then fix it PC Monitor Output Image Right side lower B o t t o m p a r t o f t h e R i g h t H i n g e U n i t A D F F i x ...

Page 132: ...ctrical Adjustment Adjustment Item Actions taken Sensor adjustment Refer to Section 5 1 2 1 The Control board unit is replaced Any of the sensors is replaced Any of the sensors is cleaned EEPROM initialization Refer to Section 5 1 2 2 The control board is replaced Scan stop position adjustment 1 2 Refer to Section 5 1 2 3 Usually performed by the user Set scan stop positions for single and reverse...

Page 133: ...he result q Document is not fed q Document jams near the entrance on the transporting belt q Document jams in the reverse mechanism 1 Set the ADF to the scanner 2 Open the switch cover on the ADF and remove 1 screw securing the rotary switch cover then remove the rotary cover 3 Set the Dip switches as shown below 1 2 3 4 5 O N O F F 4 Open and then close either the paper eject cover or the paper f...

Page 134: ...run the adjustment program and EEPROM initialization and the sensor adjustment for each sensor are carried out 5 1 3 3 Scan Stop Position Adjustment This adjustment must be made to adjust the scanning position after the document is transported into the ADF It is performed by turning the rotary switch located under the switch cover at the top of the ADF This adjustment a user performable adjustment...

Page 135: ...MAINTENANCE C H A P T E R 6 ...

Page 136: ...ants and Adhesives Name Availability Part code Grease EM 50L EPSON Exclusive TBD Lock tight 2 EPSON Exclusive B730200200 6 1 1 Cleaning This ADF requires cleaning when the total number of fed documents is 40 000 The cleaning items are listed in the table below However the total fed number does not always determine the exact time for cleaning Therefore whenever you find the abnormal operations such...

Page 137: ...gure 6 1 Pickup Roller Location Paper Feed Roller Separation Roller Registration Roller and Registration Sensor Open the paper feed cover and clean the PF roller separation roller registration roller and registration sensor CHECK POINT ü ü ü ü Use cotton swabs to reach the narrow corners when cleaning the registration sensor and reflection plate Registration Sensor and Reflection Plate Paper Feed ...

Page 138: ...pen clean the belt by turning it manually Transportation Belt Figure 6 3 Transportation Belt Cleaning Reverse Roller 2 reverse rollers are located under the paper eject cover Clean the rollers by turning them manually Reverse Roller Figure 6 4 Reverse Roller Cleaning ...

Page 139: ...Maintenance Rev A 6 4 Paper Eject Roller 2 paper eject rollers are located near the slot where document is ejected Clean the rollers by turning them manually Paper Eject Roller Figure 6 5 Paper Eject Roller ...

Page 140: ... ADF open remove 2 screws securing the registration guide on the left Then clean the timing sensor Remove 2 screws and open the registration guide Figure 6 6 Releasing the Registration Guide Timing Sensor and Reflection Plate Figure 6 7 Timing Sensor ...

Page 141: ... open remove 2 screws securing the reverse guide on the right Then clean the reverse sensor Remove 2 screws and remove the lower reverse guide Figure 6 8 Paper Eject Reverse Sensor Paper Eject Reverse Sensor and Reflection Plate Figure 6 9 Paper Eject Reverse Sensor ...

Page 142: ...der screws M3 3 3 q q q q Locking leaf springs Colored areas in Figure 6 10 Amount q q q q Cutouts in the links 30 mg each q q q q Locking leaf springs 10 mg each A R i g h t S i d e P l a t e A r e a s t o b e L u b r i c a t e d F r o n t S i d e P l a t e L o c k i n g L e a f S p r i n g L o c k i n g L e a f S p r i n g B R e g i s t r a t i o n L i n k S l i d i n g p a r t t o b e l u b r i...

Page 143: ...l e y R o l l e r H o l d e r S l i d e S h a f t B u s h i n g A A B u s h i n g S l i d e S h a f t B u s h i n g F a c e A A P u l l e y R o l l e r H o l d e r Figure 6 11 Lubricating Point 2 Lubricating Point 3 Points Sliding parts in the dropping roller holders Colored areas in Figure 6 12 Amount 5 mg each D r o p p i n g R o l l e r H o l d e r s D r o p p i n g R o l l e r Figure 6 12 Lubr...

Page 144: ...P o i n t H o l d i n g R o l l e r L e a f S p r i n g f o r H o l d i n g R o l l e r L u b r i c a t i n g P o i n t Figure 6 13 Lubricating Point 4 Lubricating Point 5 Points Sliding parts for the belt holders and the belt holding roller 2 Colored areas in Figure 6 14 Amount 5 mg each B e l t H o l d e r s B e l t H o l d i n g R o l l e r 2 Figure 6 14 Lubricating Point 5 ...

Page 145: ...d i n g R o l l e r K S B e l t H o l d e r s Figure 6 15 Lubricating Point 6 Lubricating Point 7 Points Sliding part for the DF support shaft and right DF side plate Colored area in Figure 6 16 Amount 10 mg each D F B e l t R i g h t D F S i d e P l a t e L u b r i c a t i n g P o i n t D F S u p p o r t S h a f t R i g h t S i d e P l a t e A Figure 6 16 Lubricating Point 7 ...

Page 146: ...n s i o n P l a t e T e n s i o n S h a f t R i g h t T e n s i o n R o l l e r Figure 6 17 Lubricating Point 8 Lubricating Point 9 Points Contact Points for the eject roller and eject leaf spring Colored points in Figure 6 18 Amount 5 mg each Note Do not lubricate the external surface of the eject roller E j e c t R o l l e r L e a f S p r i n g f o r E j e c t R o l l e r Figure 6 18 Lubricating...

Page 147: ...ating Point 10 Lubricating Point 11 Points Sliding parts of the reverse roller shafts U Colored areas in Figure 6 20 Amount 5 mg each Note Do not lubricate the external surface of the reverse roller R e v e r s e R o l l e r S h a f t U R e v e r s e R o l l e r L e a f S p r i n g f o r R e v e r s e R o l l e r R e v e r s e C o v e r R e v e r s e R o l l e r S h a f t U R e v e r s e R o l l e...

Page 148: ...ng Amount 10 mg each R e a r R e v e r s e S i d e P l a t e K e y L o c k F l a p p e r F r o n t R e v e r s e S i d e P l a t e K e y L o c k Figure 6 21 Lubricating Point 12 Lubricating Point 13 Points Sliding parts of the registration roller bushings 8MM Colored areas in Figure 6 22 Amount 10 mg each R e a r S i d e P l a t e A F r o n t S i d e P l a t e A R e g i s t r a t i o n R o l l e r...

Page 149: ... n t S i d e P l a t e A R e a r S i d e P l a t e A B u s h i n g s M F Figure 6 23 Lubricating Point 14 Lubricating Point 15 Points Sliding parts for the registration links and registration pinch roller Colored areas in Figure 6 24 Amount 10 mg each F r o n t S i d e P l a t e A R e g i s t r a t i o n P i n c h R o l l e r R e g i s t r a t i o n L i n k s R e a r S i d e P l a t e A Figure 6 2...

Page 150: ...older where the front and rear compression springs are hooked A d h e r i n g P o i n t s R e a r P u l l e y C o m p r e s s i o n S p r i n g F r o n t P u l l e y C o m p r e s s i o n S p r i n g P u l l e y R o l l e r H o l d e r Figure 6 25 Adhering Point 1 Adhering Point 2 q Occasion Belt Pulley A installation q Amount 5 mg each q Method Apply lock tight to the upper half of the screw shaf...

Page 151: ...half of the screw shaft from the head then fasten the screw Note Do not apply any adhesives to the brush S c r e w s s e c u r i n g t h e b r u s h D i s c h a r g i n g B r u s h D i s c h a r g i n g B r u s h D i s c h a r g i n g B r u s h S c r e w s e c u r i n g t h e b r u s h V i e w A A R G u i d e Figure 6 27 Adhering Point 3 ...

Page 152: ...APPENDIX C H A P T E R 7 ...

Page 153: ...ocument through Off 13 AN 24V 24V Inputs 24VDC applied to the photo interrupter sensor 14 REGE Registration sensor 0 3 5V Present 1 15V Empty Outputs paper empty presence detection signal 15 RDDLED 0 24V Inputs the LED light amount control signal Table 7 2 Connector Pin Assignment CN2 Pin No Signal name I O destination Signal level Function 1 B 2 B Pulse signal Outputs transportation motor 3 A Tra...

Page 154: ...eject reverse sensor photo interrupter LED drive control signal 4 24V Paper eject Revers 24V Outputs 24VDC for inducing solenoid 5 DRSOL solenoid Pulse signal Outputs solenoid drive signal change trigger Table 7 6 Connector Pin Assignment CN6 Pin No Signal name I O destination Signal level Function 1 TXD RXD Pulse signal Data receive signal 2 TXD RXD Pulse signal Inverse receive signal 3 RXD TXD P...

Page 155: ...ADF Appendix Rev A 7 3 7 2 EXPLODED DIAGRAMS Figure 7 1 Exploded Diagram 1 ...

Page 156: ...ADF Appendix Rev A 7 4 Figure 7 2 Exploded Diagram 2 ...

Page 157: ...ADF Appendix Rev A 7 5 Figure 7 3 Exploded Diagram 3 ...

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Epson GT-1200, Service Manual

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