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Canon Duplex Unit-A1 Service Manual
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Canon Duplex Unit-A1 Service Manual

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Service Manual
Duplex unit
Duplex Unit-A1
Sep 14 2005

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Summary of Contents for Canon Duplex Unit-A1

  • Page 1 Service Manual Duplex unit Duplex Unit-A1 Sep 14 2005...
  • Page 3 Canon will release technical information as the need arises. In the event of major changes in the contents of this manual over a long or short period, Canon will issue a new edition of this manual.
  • Page 4 Introduction Symbols Used This documentation uses the following symbols to indicate special information: Symbol Description Indicates an item of a non-specific nature, possibly classified as Note, Caution, or Warning. Indicates an item requiring care to avoid electric shocks. Indicates an item requiring care to avoid combustion (fire). Indicates an item prohibiting disassembly to avoid electric shocks or problems.
  • Page 5 Introduction The following rules apply throughout this Service Manual: 1. Each chapter contains sections explaining the purpose of specific functions and the relationship between electrical and mechanical systems with refer- ence to the timing of operation. In the diagrams, represents the path of mechanical drive; where a signal name accompanies the symbol , the arrow indicates the direction of the electric signal.

  • Page 7: Table Of Contents

    Contents Contents Chapter 1 Specifications 1.1 Product Specifications ........................... 1- 1 1.1.1 Specifications ............................1- 1 1.2 Names of Parts ............................... 1- 1 1.2.1 External View............................1- 1 1.2.2 Sectional View............................1- 2 Chapter 2 Functions 2.1 Basic Construction............................2- 1 2.1.1 Outline ...............................
  • Page 8 Contents 4.1 Maintenance and Inspection ......................... 4- 1 4.1.1 Periodically Replaced Parts ........................4- 1 4.1.1.1 Periodically Replaced Parts ......................4- 1 4.1.2 Durables ..............................4- 1 4.1.2.1 Durables ............................. 4- 1 4.1.3 Periodical Servicing..........................4- 1 4.1.3.1 Periodical Servicing Items ....................... 4- 1 4.2 Outline of Electrical Components .........................

  • Page 9: Chapter 1 Specifications

    Chapter 1 Specifications...
  • Page 11 Contents Contents 1.1 Product Specifications............................1-1 1.1.1 Specifications .............................. 1-1 1.2 Names of Parts..............................1-1 1.2.1 External View.............................. 1-1 1.2.2 Sectional View ............................1-2...

  • Page 13: Product Specifications

    Chapter 1 1.1 Product Specifications 1.1.1 Specifications 0010-4339 T-1-1 Item Description Remarks Type Built in the host machine Paper supply method Switchback reversing method Copy paper type 60g/m2 to 90g/m2 Copy paper size A3, B4, A4, A4R, B5, B5R, A5R, 11X17, LGL, LTR, LTR-R, STMTR Power supply DC power supply from host machine...

  • Page 14: Sectional View

    Chapter 1 1.2.2 Sectional View 0010-4341 F-1-2 T-1-3 [1] Feed roller 1 [5] Delivery guide [2] Reversal tray (sub) [6] Duplex flapper [3] Reversal tray [7] Feed roller 2 [4] Reversal flapper [8] Feed roller 3...

  • Page 15: Chapter 2 Functions

    Chapter 2 Functions...
  • Page 17 Contents Contents 2.1 Basic Construction ............................. 2-1 2.1.1 Outline ................................. 2-1 2.2 Pick-Up/Feed Systm............................2-1 2.2.1 Outline ................................. 2-1 2.2.2 Paper Feed Path ............................2-3 2.2.3 Paper Feed Operation ..........................2-3 2.3 Detecting Jams ..............................2-10 2.3.1 Outline ............................... 2-10 2.3.2 Delay Jam ..............................

  • Page 19: Basic Construction

    Chapter 2 2.1 Basic Construction 2.1.1 Outline 0010-4342 The operation sequence of the duplex unit is controlled by the duplex controller PCB. An 8-bit microcomputer mounted on the duplex controller PCB controls the operation sequence of the duplex unit and the serial communication with the DC controller PCB. The duplex controller PCB drives motors in response to various commands sent from the DC controller PCB.
  • Page 20 Chapter 2 M1002 SR1002 M1001 SL1001 SR1003 F-2-2 T-2-2 [1] Feed roller 1 M1001: Feed motor [2] Feed roller 2 M1002: Reversal motor [3] Feed roller 3 SR1002: Duplex paper sensor 1 SL1001: Duplex flapper solenoid SR1003: Duplex paper sensor 2...

  • Page 21: Paper Feed Path

    Chapter 2 2.2.2 Paper Feed Path 0010-4345 SR1002 SR1003 F-2-3 2.2.3 Paper Feed Operation 0010-4346 This section explains how two sheets of A4 paper are fed for duplex printing. 1) When the predetermined time lapses after the first paper is supplied, the reversal motor (M1002) starts rotating to feed the paper toward the reversal tray. Immediately after the leading edge of the paper is detected by the delivery sensor, the duplex flapper solenoid turns on to feed the paper to the duplex unit.
  • Page 22 Chapter 2 SR1002 Duplex flapper Fixing delivery sensor SR1003 F-2-4 2) When the trailing edge of the paper reaches the reversal point (when the predetermined time lapses after the trailing edge of the paper is detected by the delivery sensor), the reversal motor (M1002) stops.
  • Page 23 Chapter 2 SR1002 Fixing delivery sensor SR1003 F-2-5 3) After stopping for the predetermined time, the reversal motor (M1002) starts rotating to feed the paper toward the duplex unit, allowing the paper to be fed into the host machine. During this time, the second paper is supplied. When the predetermined time lapses after the reversal motor (M1002) stops, the feed motor (M1001) starts rotating.
  • Page 24 Chapter 2 SR1002 SR1003 F-2-6 4) When the predetermined time lapses after the trailing edge of the paper is detected by the duplex paper sensor 1 (SR1002), the reversal motor stops (M1002). 5) When the predetermined time lapses after the duplex paper sensor detects the leading edge of the fist paper is detected by the duplex paper sensor 2 (SR1003), the feeder motor stops.
  • Page 25 Chapter 2 SR1002 SR1003 Standby point F-2-7 6) After lapse of the predetermined time, the first paper is picked again. When the predetermined time lapses after the leading edge of the paper is detected by the pre-registration sensor in the host machine, the feed motor (M1001) stops.
  • Page 26 Chapter 2 SR1002 Fixing delivery sensor SR1003 Registration sensor F-2-8 7) During printing on the first paper, the second paper reaches the reversal point.
  • Page 27 Chapter 2 SR1002 SR1003 F-2-9 8) After completion of printing, the first paper is ejected. The second paper is supplied again and ejected after completion of printed.

  • Page 28: Detecting Jams

    Chapter 2 SR1002 SR1003 F-2-10 2.3 Detecting Jams 2.3.1 Outline 0010-4347 The following paper detection sensors are mounted to check whether paper is fed properly in the duplex unit: - Duplex paper sensor 1 (SR1002) (upper) - Duplex paper sensor 2 (SR1003) (lower) Occurrence of a jam is detected according to whether paper exists at a sensor at the check timing memorized in the CPU.

  • Page 29: Chapter 3 Parts Replacement Procedure

    Chapter 3 Parts Replacement Procedure...
  • Page 31 Contents Contents 3.1 Removing from the Host Machine ........................3-1 3.1.1 Duplex Unit ..............................3-1 3.1.1.1 Removing the Drum Unit ........................3-1 3.1.1.2 Removing the Rear Cover ........................3-1 3.1.1.3 Removing the Left Cover (Rear)......................3-1 3.1.1.4 Removing the Duplex Unit........................3-1 3.2 Drive System ..............................

  • Page 33: Removing From The Host Machine

    Chapter 3 3.1 Removing from the Host Machine side. 3.1.1 Duplex Unit 3.1.1.1 Removing the Drum Unit 0010-6344 1) Open the front cover [1]. 2) Turn the developing assembly locking lever [2] clockwise to open the left door [3]. 3) Draw out the drum unit [4]. F-3-4 4) Remove the four screws [1], and then remove the transfer/registration unit [2].

  • Page 34: Drive System

    Chapter 3 F-3-8 3.3 Electrical System 3.3.1 Duplex Paper Sensor 3.3.1.1 Removing the Duplex Paper Sensor 0010-6351 1) Remove the duplex unit from the left door. 2) Remove the connector, and then remove the duplex paper sensor 1 [1]. F-3-6 3) Remove the connector, and then remove the duplex paper sensor 2 [2].

  • Page 35: Duplex Controller Pcb

    Chapter 3 F-3-11 4) Remove the two screws [1], and then remove the duplex flapper solenoid [2]. F-3-12 3.3.3 Duplex Controller PCB 3.3.3.1 Removing the Duplex Controller PCB 0010-6350 1) Remove the duplex unit from the left door. 2) Remove the five connectors [1] form the duplex controller PCB. 3) Remove the four screws [2], and remove he duplex controller PCB [3].

  • Page 37: Chapter 4 Maintenance

    Chapter 4 Maintenance...

  • Page 39: Maintenance And Inspection

    Contents Contents 4.1 Maintenance and Inspection ..........................4-1 4.1.1 Periodically Replaced Parts......................... 4-1 4.1.1.1 Periodically Replaced Parts........................4-1 4.1.2 Durables............................... 4-1 4.1.2.1 Durables..............................4-1 4.1.3 Periodical Servicing ............................ 4-1 4.1.3.1 Periodical Servicing Items........................4-1 4.2 Outline of Electrical Components ........................4-1 4.2.1 Outline of Electrical Components .......................
  • Page 41 Chapter 4 4.1 Maintenance and Inspection 4.1.1 Periodically Replaced Parts 4.1.1.1 Periodically Replaced Parts 0010-4350 This machine has no periodically replaced parts. 4.1.2 Durables 4.1.2.1 Durables 0010-4351 This machine has no durables. 4.1.3 Periodical Servicing 4.1.3.1 Periodical Servicing Items 0010-4353 This machine has no periodical servicing items.
  • Page 43 Chapter 5 Error Code...

  • Page 45: Service Error Code

    Contents Contents 5.1 Service Error Code ............................. 5-1 5.1.1 Error Code list ............................. 5-1 5.2 Jam Codes................................5-1 5.2.1 Jam Code List .............................. 5-1...
  • Page 47 Chapter 5 5.1 Service Error Code 5.1.1 Error Code list 0011-2139 T-5-1 Code Details Explanation Countermeasure code E052 0000 Cause of faulty connection to - Check the connectors of the duplex controller PCB and duplex unit: Broken line or faulty DC controller PCB.
  • Page 49 Sep 14 2005...

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