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SERVICE
MANUAL

REVISION 0

COPYRIGHT



1999 CANON INC.

CANON DUPLEXING UNIT DU-82 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

RY8-1396-000

JAN. 1999

DUPLEXING UNIT

Содержание DU-82

Страница 2: ...of this manual should be strictly supervised to avoid disclosure of confidential information Prepared by PERIPHERAL PRODUCTS QUALITY PLANNING DIV PERIPHERAL PRODUCTS TECHNICAL DOCUMENTATION DEPT CANON INC 5 1 Hakusan 7 chome Toride City Ibaraki Pref 302 8501 Japan ...

Страница 3: ... systems Chapter 3 The Mechanical System Explanation of mechanical operation disassembly reassembly and adjustment procedures Chapter 4 Troubleshooting Maintenance and servicing measurement and adjustments troubleshooting procedures and location of electrical components Appendix General timing chart general circuit diagram and list of signals Information in this manual is subject to change as the ...

Страница 4: ... laser beam printer final pages were printed on AGFA Selectset avantra 25 All graphics were produced with Macromedia FreeHand J and all documents and page layouts were created with QuarkXPress E The video images were captured with SONY degital video camcorder and Radius PhotoDV capture board system and modified with Adobe Photoshop J ...

Страница 5: ... External Covers 3 3 III SENSORS 3 5 A Locations 3 5 B Duplex Feed Roller 1 Home Position Sensor 3 6 C Duplexing Unit Paper Sensor 3 6 D Side Registration Guide Home Position Sensor 3 7 E Reversing Sensor 3 7 IV CLUTCH SOLENOIDS 3 8 A Locations 3 8 B Reversing Roller Release Solenoid 3 9 C Duplex Deflector Solenoid 3 10 D Duplex Feed Clutch 3 11 V MOTORS 3 12 A Locations 3 12 B Duplexing Unit Moto...

Страница 6: ...CB 4 11 VIII MAINTENANCE AND SERVICING 4 12 A Periodic Replacement Parts 4 12 B Expected Lives of Consumable Parts 4 12 C Regular Servicing Schedule 4 12 D Standard Tools 4 12 E Special Tools 4 12 F List of Lubricants and Cleaners 4 12 IX LOCATION OF CONNECTORS 4 13 APPENDIX I GENERAL TIMING CHART A 1 II GENERAL CIRCUIT DIAGRAM A 2 III LIST OF SIGNALS A 3 ...

Страница 7: ...CHAPTER 1 PRODUCT INFORMATION I FEATURES 1 1 II SPECIFICATIONS 1 2 III PARTS OF THE DUPLEXING UNIT 1 3 IV INSTALLATION 1 4 ...

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Страница 9: ...1 1 CHAPTER 1 I FEATURES 1 Optional built in type duplexing unit The duplexing unit is compact in size and can be installed inside the printer ...

Страница 10: ...er Legal Letter and Executive size plain paper 64g m2 105g m2 recommended paper 2 Power supply DC24V supplied from printer 3 Dimensions 379 W 423 D 82 H mm 4 Weight About 3 5kg Specifications are subject to change with product modification 1 2 CHAPTER 1 ...

Страница 11: ... guide plate 3 Duplex feed roller 1 4 Duplexing unit removal lever Figure 1 3 1 B Cross Sectional Views 1 Reversing roller pressure release plate 2 Reversing sensor 3 Duplex pick up sensor lever 4 Duplex feed roller 2 5 Duplex feed roller 1 6 Reversing roller Figure 1 3 2 1 3 CHAPTER 1 ...

Страница 12: ...ilure Therefore when moving the duplexing unit to a warm environment leave it packed in its box for at least an hour to acclimatize to room temperature 1 Open the duplexing unit packaging 2 Take off the plastic bag and peel the tape off 3 Remove the packing materials from the duplexing unit 4 Open the delivery cover on the printer 5 Holding the duplexing unit in both hands install it into the prin...

Страница 13: ...d inactive at ground level indicating that the signal is not being output A signal that is L or has a slash in front of its name is active at ground level and inac tive at the supply voltage level There is a microcomputer in this printer But as the internal operation of the microcom puter cannot be checked an explanation of the operation of the microcomputer has been left out As it is assumed that...

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Страница 15: ...noids and a clutch according to the duplex unit specification command and the duplex pick up command sent from the DC controller PCB The printer provides 24 VDC to the duplexing unit The duplexing driver PCB generates 5 V for ICs and sensors from 24 V The flow of signals between the duplexing unit and printer is shown below Figure 2 1 1 2 1 CHAPTER 2 Duplexing driver PCB Reversing roller release s...

Страница 16: ...when the sensor detects home position of the side registration guide Side regist ration guide home position sensor PS25 J2006 1 3 2 HREGS J21 3 1 2 5V L when the sensor detects paper Reversing sensor PS26 J2007 1 3 2 SWBKS J22 3 1 2 5V H when the sensor detects home position of the duplex feed roller 1 Duplex feed roller 1 home position sensor PS23 J2007 4 6 5 DRPS J23 3 1 2 5V ...

Страница 17: ... When L pressure is relased from the reversing roller Duplexing unit motor control signal J2009 2 24VA Duplex deflector solenoid SL6 DUPSLD 1 When L paper enters the duplexing unit J2002 2 24VA J2003 2 1 Duplex feed clutch DUPCLD L to rotate the duplex feed roller CL5 Side registration motor M7 HRGCOMA HRGCOMB HRGAD HRGAND HRGBD HRGBND J2005 1 2 3 4 5 6 Side registration motor control signal 24VA ...

Страница 18: ...tration guide in the duplexing unit see page 2 8 The paper is then transported to the printer with the duplex feed roller The reversing roller is rotated by the duplexing unit motor M8 Duplex feed rollers 1 and 2 are turned by the duplexing unit motor M8 through the duplex feed clutch The duplexing unit motor M8 is a stepping motor that is run clockwise counterclockwise at normal or high speed by ...

Страница 19: ...sor PS24 Duplexing unit paper sensor PS25 Side registration guide home position sensor PS26 Reversing sensor Fixing delivery roller M8 Feed roller 2 SL6 SIDE REGISTRATION MOTOR DRIVE signal REVERSING ROLLER RELEASE SOLENOID DRIVE signal PRRESLD DUPLEX DEFLECTOR SOLENOID DRIVE signal DUPSLD REVERSING PAPER DETECTION signal SWBKS SIDE REGISTRATION GUIDE HOME POSITION DETECTION signal HREGS DUPLEX FE...

Страница 20: ...r 4 Duplex deflector solenoid 5 Duplex feed roller 1 home position sensor 6 Side registration guide 7 Duplexing unit paper sensor 8 Duplex feed roller 1 9 Duplex feed clutch 10 Side registration guide home position sensor 11 Reversing sensor 12 Side registration motor Figure 2 2 2 2 6 CHAPTER 2 12 11 ...

Страница 21: ...d period of time to change the feeding direction of the paper The paper is fed along the lower duplex guide and goes to the feed roller in the duplexing unit Note If the paper size is A4 or Letter the duplexing driver increases the speed of paper feed to the reversing unit by increasing the speed of M8 in a prescribed period of time after it starts running M8 As a result the distance between the p...

Страница 22: ...elease solenoid SL7 releases the reversing roller pressure sets the print paper completely free and completes preparation for side registration adjustment Figure 2 2 4 When the preparation ends the duplexing driver runs the side registration motor M7 for the prescribed number of pulses according to the paper size data from the DC controller and moves the side registration guide according to the pa...

Страница 23: ...per The duplexing driver stops the paper at the duplex pick up standby position in the printer and waits for a duplex pick up command input from the printer When the duplexing driver receives a duplex pick up command from the printer it controls the speed of the duplexing unit motor M8 so that the speed equals the printer s paper feeding speed The duplexing driver then turns ON CL5 to feed the pap...

Страница 24: ... delay jam if the print paper does not reach the reversing sensor PS26 within about 1 5 seconds after the duplex deflector solenoid turns ON 2 Reversing unit stationary jam The duplexing driver detects a reversing unit stationary jam if the trailing edge of the paper does not pass through the reversing sensor PS26 within the prescribed period of time T1 after the duplex deflector solenoid turns ON...

Страница 25: ...CHAPTER 3 THE MECHANICAL SYSTEM I PREFACE 3 1 II EXTERNALS 3 2 III SENSORS 3 5 IV CLUTCH SOLENOIDS 3 8 V MOTORS 3 12 VI ELECTRICAL PARTS 3 14 ...

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Страница 27: ...Before servicing the duplexing unit disconnect its power cord from the electrical outlet 2 Assembly is the reverse of disassembly unless otherwise specified 3 Note the lengths diameters and locations of screws as you remove them When reassem bling the duplexing unit be sure to use them in their original locations 4 Do not operate the duplexing unit with any parts removed 5 Discharge electrical sta...

Страница 28: ...EXTERNALS A Locations Upper guide Lower guide PCB cover Figure 3 2 1 Following the procedures described in this section remove the covers when cleaning or check ing inside the duplexing unit 3 2 CHAPTER 3 ...

Страница 29: ...p guide plate is on the outside Upper guide Pick up guide plate Figure 3 2 3 2 Lower guide 1 Remove the upper guide 2 Remove the connector and take out the 2 screws then the guide Connector Screws Guide Figure 3 2 4 3 Remove the 2 springs Note then the reversing roller pressure release plate Springs Reversing roller pressure release plate Figure 3 2 5 3 3 CHAPTER 3 ...

Страница 30: ... 2 springs differ from each other in terms of tension and color When attaching the springs be sure to attach them in their correct positions In the picture the spring on the left is gold and the one on the right is silver 3 PCB cover 1 Remove the 2 screws and then the PCB cover Screws PCB cover Figure 3 2 8 3 4 CHAPTER 3 ...

Страница 31: ...III SENSORS A Locations Duplex feed roller 1 home position sensor Duplexing unit paper sensor Side registration guide home position sensor Reversing sensor Figure 3 3 1 3 5 CHAPTER 3 ...

Страница 32: ...nnector and then remove the duplex feed roller 1 home position sen sor Screw Connector Sensor mounting plate Duplex feed roller 1 home position sensor Figure 3 3 2 C Duplexing Unit Paper Sensor 1 Performing Step 1 on Page 3 4 remove the PCB cover 2 Disconnect the connector and then remove the duplexing unit paper sensor Connector Duplexing unit paper sensor Figure 3 3 3 3 6 CHAPTER 3 ...

Страница 33: ...or and then remove the side registration guide home position sensor Connector Side registration guide home position sensor Figure 3 3 4 E Reversing Sensor 1 Performing Step 1 on Page 3 3 remove the upper guide 2 Disconnect the connector and then remove the reversing sensor Connector Reversing sensor Figure 3 3 5 3 7 CHAPTER 3 ...

Страница 34: ...IV CLUTCH SOLENOIDS A Locations Reversing roller release solenoid Duplex deflector solenoid Duplex feed clutch Figure 3 4 1 3 8 CHAPTER 3 ...

Страница 35: ...uide 2 Take out the PCB cover 3 Remove the connector Connector Figure 3 4 2 4 Remove the 2 screws Screws Figure 3 4 3 5 Remove the cable from the cable guide and then take out the reversing roller release solenoid Cable guide Cable Reversing roller release solenoid Figure 3 4 4 3 9 CHAPTER 3 ...

Страница 36: ...tors Connectors Figure 3 4 5 3 Remove the connector 4 Remove the cable from the guide Connector Cable Cable guide Figure 3 4 6 5 Remove the 2 screws and take off the motor fixing plate Screws Motor fixing plate Figure 3 4 7 6 Remove the screw and take off the sole noid cover Screw Solenoid cover Figure 3 4 8 3 10 CHAPTER 3 ...

Страница 37: ...ctor solenoid Figure 3 4 9 D Duplex Feed Clutch 1 Performing Step 1 on Page 3 3 remove the upper guide 2 Take off the PCB cover and undo the connector Connector Figure 3 4 10 3 Remove the C ring and take out the duplex feed clutch C ring Duplex feed clutch Figure 3 4 11 3 11 CHAPTER 3 ...

Страница 38: ...V MOTORS A Locations Duplexing unit motor Side registration motor Figure 3 5 1 3 12 CHAPTER 3 ...

Страница 39: ... 4 Take out the 2 screws then the duplex ing unit motor C Side Registration Motor 1 Performing Step 1 to 5 on Page 3 3 remove the lower guide 2 Take off the PCB cover then remove the connector Connector Figure 3 5 4 3 Remove the cable from the cable guide 4 Remove the two screws and then the motor fixing plate Cable guides Cable Screws Motor fixing plate Side registration motor Figure 3 5 5 5 Take...

Страница 40: ...VI ELECTRICAL PARTS A Locations Duplexing driver PCB Figure 3 6 1 3 14 CHAPTER 3 ...

Страница 41: ...ver PCB 1 Performing Step 1 on Page 3 4 remove the PCB cover 2 Disconnect the 9 connectors unhook the 2 claws and then remove the duplexing driver PCB Connectors Claws Duplexing driver PCB Figure 3 6 2 3 15 CHAPTER 3 ...

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Страница 43: ...GE DEFECTS 4 4 III PAPER JAMS 4 5 IV PAPER TRANSPORT MALFUNCTION 4 6 V MALFUNCTION TROUBLESHOOTING 4 7 VI MALFUNCTION STATUS TROUBLESHOOTING 4 9 VII MEASUREMENT AND ADJUSTMENT 4 11 VIII MAINTENANCE AND SERVICING 4 12 IX LOCATION OF CONNECTORS 4 13 ...

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Страница 45: ...which type the malfunction falls into using the malfunction diagnosis flowchart and to clear the problem according to the troubleshooting procedures for each malfunction type Make sure the following points at the execution of troubleshooting Be sure that the connector has no poor contact when measuring the voltage at the specified terminal of the connector Before handling PCBs be sure to touch a m...

Страница 46: ...No Yes Initial check execution Power ON Displays READY Refer to the item malfunction troubleshooting Can duplex printing be executed Refer to the item malfunction status troubleshooting Execute a duplex printing Refer to the item paper jams Occurs paper jam Delivers paper normally Refer to the item paper transport troubleshooting Occurs image defect Note 1 Refer to the item image defects Refer to ...

Страница 47: ... damp 3 Others During winter particularly when moving the duplexing unit into a warm room from a cold loca tion such as warehouse condensation can appear in the duplexing unit The condensation can cause various problems If condensation appeared wipe each part with a dry cloth or leave the duplexing unit with the printer power ON for 10 to 20 minutes 4 3 CHAPTER 4 ...

Страница 48: ...uses 1 The duplex feed roller 1 is dirty Action Clean the duplex feed roller 1 2 The feed guide is dirty Action Clean the feed guide 3 The reversing roller and the duplex feed roller 2 are dirty Action Clean the dirty rollers 4 4 CHAPTER 4 ...

Страница 49: ... feed guide Action Remove the foreign substances If the feed guide suffers from burr replace it 3 The reversing roller or the duplexing feed roller is worn or deformed Action Replace it 4 Gears are worn or cracked Action Replace it 5 Sensor levers do not move smoothly or are damaged Action Re install them to move smoothly or replace if damaged 4 5 CHAPTER 4 ...

Страница 50: ...tion guide has paper particles or dust Action Clean the dirty place 2 Rollers are worn or deformed Action Check the rollers and replace if any roll is worn or deformed 3 The paper guide is cracked or deformed Action Check the paper feed path and replace if the guide is cracked or deformed 4 6 CHAPTER 4 ...

Страница 51: ... failure Possible causes 1 Poor connection with the connector of the DUPLEXING MOTOR DRIVE signal line Action Reconnect the connector J2004 on the duplexing driver PCB correctly 2 The duplexing unit motor failure Action Replace it 3 The duplexing driver PCB failure Action Replace it N 4 Reversing roller release solenoid failure Possible causes 1 Poor connection with the connector of the REVERSING ...

Страница 52: ...2002 of the duplexing driver PCB correctly 2 The duplex deflector solenoid failure Action Disconnect the connector J2002 of the duplex deflector solenoid Measure resis tance between the connector J2002 1 and the J2002 1 located cable side Replace the duplex deflector solenoid if the resistance is not about 130 Ω 3 The duplexing driver PCB failure Action Replace it 4 8 CHAPTER 4 ...

Страница 53: ...n Replace it 7 The duplexing driver PCB failure Action Replace it M 2 Duplex feed unit failure Possible causes 1 The duplex feed roller 1 home position sensor lever is damaged Action Replace it 2 Gears are damaged Action Replace it if any gear is damaged 3 Poor connection with the connectors of the DUPLEX FEED ROLLER 1 HOME POSITION DETECTION signal line of the DUPLEXING UNIT MOTOR DRIVE signal li...

Страница 54: ...t installation failure status is output when the duplexing unit is installed in the printer Possible causes 1 Poor connection in the connector Action Reconnect the connector J2001 on the duplexing driver PCB 2 Duplexing driver PCB failure Action Replace it 4 10 CHAPTER 4 ...

Страница 55: ...justment B Electrical Adjustment This duplexing unit has no item for electrical adjustment C Variable resistors LEDs test pins jumpers and switches on PCB This duplexing unit has no variable resistors LEDs test pins jumpers and switches that are required for after sales service of the unit 4 11 CHAPTER 4 ...

Страница 56: ...ration or damages at least once during the warranty period and that can be used until failures occur C Regular Servicing Schedule No parts need regular service D Standard Tools Required standard tools for the duplexing unit service are the same as for the printer E Special Tools This duplexing unit has no special tools for service F List of Lubricants and Cleaners Table 4 8 1 4 12 CHAPTER 4 Compon...

Страница 57: ...IX LOCATION OF CONNECTORS Figure 4 9 1 4 13 CHAPTER 4 J19 J23 J20 J21 J22 J2005 J2008 J2007 J2001 J2004 J2002 J2006 J2003 J2009 ...

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Страница 59: ...APPENDIX I GENERAL TIMING CHART A 1 II GENERAL CIRCUIT DIAGRAM A 2 III LIST OF SIGNALS A 3 ...

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Страница 61: ...te Reversing sensor PS26 Duplexing unit paper sensor PS24 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 PRINT Sequence Normal speed About 0 9 CCW CW Note The fixing unit delivery sensor is a part of the printer Timing chart for two consecutive prints on A4 landscape paper Unit Seconds About 2 7 About 0 9 About 0 1 About 3 3 High speed CCW CW CW CW ...

Страница 62: ...3 2 1 J20 PS25 3 2 1 J21 PS26 3 2 1 J22 PS23 3 2 1 J23 SL7 SL6 M8 M CL M7 M CL5 8 7 6 5 4 3 2 1 1 2 1 2 1 2 3 4 3 2 1 1 2 3 4 3 2 1 1 2 3 1 2 3 3 2 1 1 2 3 4 5 6 1 2 3 4 5 6 3 2 1 5V GND DUPPS N C 5V GND HREGS 5V GND SWBKS 5V GND DRPS J2009 J2008 J2006 J2007 GND GND DUPCLK DUPCMD DUPSTS DUPIDS 24VA 24VA 1 2 1 2 3 4 1 2 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 1 2 1 2 DUPSLD 24VA DUPCLD 24VA SWBAD SWBAND SW...

Страница 63: ...plexing unit motor control signal 4 SWBBND Output Duplexing unit motor control signal J2005 1 HRGCOMA Output Side registration motor control signal 2 HRGCOMB Output Side registration motor control signal 3 HRGAD Output Side registration motor control signal 4 HRGAND Output Side registration motor control signal 5 HRGBD Output Side registration motor control signal 6 HRGBND Output Side registration...

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Страница 65: ...pared by PERIPHERAL PRODUCTS QUALITY PLANNING DIV PERIPHERAL PRODUCTS TECHNICAL DOCUMENTATION DEPT CANON INC Printed in Japan REVISION 0 JAN 1999 5 1 Hakusan 7 chome Toride City Ibaraki Pref 302 8501 Japan ...

Страница 66: ...PRINTED IN JAPAN IMPRIME AU JAPON 0199AB0 70 CANON INC The printing paper contains 70 waste paper ...

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