Canon DADF-Q1 Service Manual

Text of Canon DADF-Q1 User Guide:

• Canon DADF-Q1, Chapter 3 3-8 F-3-51 2) Free the hook of the pickup assembly cover [2] from the right stay; then, detach it while paying attention to the hooks on the front and rear side plates. F-3-52 3) When you have removed the ADF controller cover, disconnect the con- nector [3] of the ADF controller PCB; then, remove the screw [4], and re- move the grounding wire [5]. Free the harness from the wire saddle [6], and detach the other saddle [7]. F-3-53 4) Remove the four screws [1], and detach the main cover [2]. The main cover is fitted with the original tray [3], and cables are connected to it. Take extra care when removing it not to damage the cables. F-

• Canon DADF-Q1, Contents 3.4.5 Delivery Roller........................................................................................................................................................................... 3-18 3.4.5.1 Disconnecting the DADF.............................................................................................................................................................................. 3-18 3.4.5.2 Removing the Front Cover ........................................................................................................................................................................... 3-18 3.4.5.3 Removing the Main Cover....................................

• Chapter 3 3-24 F-3-165 13) Remove the separation roller. When mounting the one-way gear, be sure that the protrusion faces inside. F-3-166 3.4.8 Feeding (pull-off) Roller 3.4.8.1 Removing the Front Cover 0011-8200 1) Remove the front cover [1]. -Three screws [2] (remove) -One screw [3] (loosen) F-3-167 F-3-168 F-3-169 3.4.8.2 Removing the Main Cover 0011-8201 1

• Canon DADF-Q1, Chapter 2 2-1 2.1 Basic Construction 2.1.1 Overview of Electrical Circuit 0011-2223 The machine's electrical mechanisms are controlled by the ADF controller PCB (microcomputer CPU). The CPU interprets signals from sensors and the host ma- chine, and generates appropriate signals to drive such loads as motors and solenoids at such times as programmed in advance. F-2-1 CPU (Q1) ROM (IC1) EEPROM (IC2) RAM (Q4) D/A (Q9) IPC (Q2) +5V +24V +5R+24R Power supply PCB Copier Solenoid Clutch Original indic

• Canon DADF-Q1, Chapter 2 2-17 F-2-24 When the leading edge of the 1st original reaches the separation sensor (S4), the pickup motor (M3) starts to rotate to move the pickup roller unit from the surface of the stack of originals. The pickup roller unit stops about 6 mm from the surface of the stack of originals. F-2-25 When the trailing edge of the 1st original moves past the point of contact [1] of the pickup roller, the pickup roller unit once again moves down to the surface of the stack of originals to pick up the 2nd original. F-2-26 2.4.3 Switching the Separation Pressure 0011-2330 The DADF

• Canon DADF-Q1, Chapter 4 4-22 F-4-108 2) Mount the EEPROM removed in step 1) to the new ADF controller PCB. MEMO: The EEPROM on the new ADF controller PCB is not used yet. 3) Turn on the copier, and check to make sure that error code E420 is not in- dicated. 4) If error code E420 is indicated, mount back the EERPOM once removed from the new ADF controller PCB. 5) Perform the work under 1.2.3 "Adjusting the Sensors and the Delivery Motor." 4.3.2.3 Adjusting the Sensors and the 0011-3501 Perform the adjustment if you have repl

• Canon DADF-Q1, Chapter 3 3-13 F-3-87 F-3-88 3.4.2.2 Removing the Main Cover 0011-8207 1) Open the upper cover, and insert a screwdriver from above the hook; then, remove the two hooks [1]. F-3-89 2) Free the hook of the pickup assembly cover [2] from the right stay; then, detach it while paying attention to the hooks on the front and rear side plates. F-3-90 3) When you have removed the ADF controller cover, disconnect the con- nector [3] of the ADF controller PCB; then, remove the screw [4], and re- move the gr

• Canon DADF-Q1, Chapter 3 3-6 to be fully opened for removal. F-3-36 3.3.3.2 Removing the Front Cover 0011-8252 1) Remove the front cover [1]. -Three screws [2] (remove) -One screw [3] (loosen) F-3-37 F-3-38 F-3-39 3.3.3.3 Removing the Main Cover 0011-8137 1) Open the upper cover, and insert a screwdriver from above the hook; then, remove the two hooks [1]. F-3-40 2) Free the hook of the pickup assembly cover [2] from the right stay; then, detach it while paying attention to the hooks on the front and rear side plates. F-3-41 3) When you have

• Canon DADF-Q1, Chapter 2 2-37 F-2-78 2) The machine drives the registration roller and the reversing roller for pre-reversal of the original. For the 1st original, the machine uses the reversing roller to move it over a specific distance after its trail edge has moved past the pre-registration roller paper sensor (S2), and stops it. F-2-79 3) The machine uses the reversing roller and the transport belt to move the original. The machine rotates the transport belt over a specific distance after the trail edge of the 1st original has moved past the reversal sensor (S1), thus determining the o

• Chapter 2 2-39 d, Sequence of Operation (double-sided original) F-2-88 2.6.5 Fixed Reading (continuous; double-sided original) 0011-7769 a. Fax/SEND (continuous; double-sided original) Reversing solenoid SL1 DOWN DOWN UPUP UPDOWN UP A4 Double-Sided Originals; Copying separates 1st original pre-reversal for 1st original moves 2nd original to copyboard glass reads back

• Canon DADF-Q1, Chapter 3 3-2 F-3-8 3) When you have removed the ADF controller cover, disconnect the con- nector [3] of the ADF controller PCB; then, remove the screw [4], and re- move the grounding wire [5]. Free the harness from the wire saddle [6], and detach the other saddle [7]. F-3-9 4) Remove the four screws [1], and detach the main cover [2]. The main cover is fitted with the original tray [3], and cables are connected to it. Take extra care when removing it not to damage the cables. F-3-10 3.3 Drive System 3.3.1 Rever

• Chapter 4 4-27 1) Remove the ADF controller cover [2] by removing the screw [1], and set the DIP switch (SW1) on the ADF controller PCB as indicated (normal operation mode). F-4-126 F-4-127 2) Press the push switch (SW2) once. - The 7-segment LED (DSP1) on the ADF controller PCB will start to flash [1] to indicate that a check on the sensor operation has started. F-4-128 3) Press

• Chapter 3 3-18 F-3-122 8) Remove the E-ring [2] at the rear of the separation roller [1] to detach the separation belt [3]. F-3-123 3.4.5 Delivery Roller 3.4.5.1 Disconnecting the DADF 0011-8141 1) Turn off the copier. 2) Disconnect the DADF's communication cable [1] from the copier. F-3-124 3) Open the DADF fully. 4) Standing at the rear of the copier, lift the DADF to detach

• Canon DADF-Q1, Contents Contents Chapter 1 Specifications 1.1 Product Specifications ................................................................................................................................1- 1 1.1.1 ADF Specifications ..................................................................................................................................................1- 1 1.2 Names of Parts...........................................................................................................................................1- 2 1.2.1 External View.............................

• Canon DADF-Q1, Chapter 4 4-21 A single press on each switch will shift the original stop position by 0.5 mm. When the correct position is attained (after switch operation), press the push switch SW2. - The original will be delivered, and the new setting will be stored in memory. F-4-105 T-4-8 F-4-106 Holding down the push switch will not cause more than a single shift. EX If the copy paper stops 12 mm from the copyboard glass, Close the DADF slowly leaving the copy paper on the copyboard glass. To shift the stop position 1 mm to the left, the following is true: 1 0.5 (adjustment i

• Canon DADF-Q1, Chapter 4 4-6 F-4-14 4.2.4.5 Belt Assembly 0011-2669 1)Dry wipe the original feeding belt while moving it in the direction of the arrow. If the dirt is excessive, wipe it with a cloth moistened with a solution of mild detergent; then, dry wipe it. F-4-15 4.2.4.6 Original Trailing Edge Sensor 0011-2670 1) Clean the sensor widow in the original tray using a blower brush. F-4-16 4.2.4.7 Original Sensor 0011-2671 1) Remove the pickup assembly cover. 2) Clean the light-receiving area of the sensor stay and the light-emitting area at the rear of the guide plate using a blower brush. F-4-17 4.2.4.8 Separation Paper/Skew Paper 0011-2677

• Canon DADF-Q1, Chapter 2 2-27 d. Sequence of Operation (single-sided originals) F-2-48 2.6.3 CW Pickup/Delivery (stream reading) 0011-7310 In stream reading mode, the host machine keeps its scanner in place, and reads the original being moved over the copyboard glass. The following is an outline of the operation: a. Small-Size Original 1) The machine picks up the 1st original, and butts its lead edge against the registration roller to remove the skew. (For details of pickup operation, see 'Original Pickup/Separation.') F-2-49 Start key ON

• Canon DADF-Q1, Chapter 3 3-9 3.3.5 Belt Motor Unit 3.3.5.1 Removing the Front Cover 0011-8251 1) Remove the front cover [1]. -Three screws [2] (remove) -One screw [3] (loosen) F-3-58 F-3-59 F-3-60 3.3.5.2 Removing the Main Cover 0011-8132 1) Open the upper cover, and insert a screwdriver from above the hook; then, remove the two hooks [1]. F-3-61 2) Free the hook of the pickup assembly cover [2] from the right stay; then, detach it while paying attention to the hooks on the front and rear side plates. F-3-62 3) When you have removed the ADF controller cover, disconnect the con- nector [3] of the ADF controller PCB; then, remove the screw [4], and re- move the grounding wire [5]. Free the harness

• Canon DADF-Q1, Chapter 4 4-36 Separation Motor (M4), Clutch (CL) Drive Press the push switch (SW2) on the ADF controller PCB to start it; another press will stop it. While in operation, each press on the push switch SW3 changes the speed of motor rotation to 100mm/sec. (700 -> 100 mm/sec) Manual Feed Operation Place an original in the manual feed assembly, and press the push switch (SW2) on the ADF controller PCB so that the original will be picked up and stopped. Tray Pickup Arch Adjustment Press the push switch SW2 on the ADF controller PCB to start, and use the push switch S23/SW4 to make adju

• Canon DADF-Q1, Chapter 2 2-11 F-2-15 2.3.4 Original Size Detection 2 0011-2243 a. Outline In original size detection 2, the original width detecting switch (SW301) and the registration roller clock sensor (PI5) are used to identify a default size. The original width detecting switch is designed to find out the width of originals. As many as five contact plates (SSW0 through 4) are in contact with the original width detecting switch, operating in keeping with the slide guide. The state (ON or OFF) of each contact plate is communicated to the ADF controller PCB, which uses the input to determine the width of the original. The following table shows the states of the c

• Canon DADF-Q1, Chapter 3 3-5 F-3-28 3) Remove the three mounting screws [1], and detach the separation motor unit [2]. F-3-29 3.3.2.4 Removing the Pickup Motor Unit 0011-2446 1) Disconnect J601 [1] and J602 [2], and free the cable from the edge saddle [3]. F-3-30 2) Remove the two screws [1], and detach the belt motor driver PCB unit [2]. F-3-31 4) Detach the fan mtor unit [1] by removing the two screws [2]. F-3-32 5) Disconnect the pick up motor unit [1] connecter [2] and open/ closed sensor (rear) [3] connecter [4]. F-3-33 6) Remove the two m

• Canon DADF-Q1, Chapter 5 5-1 5.1 Service Error Code 5.1.1 E402 0011-7873 Cause The belt motor (M2) is faulty. The belt motor clock sensor (PI1) is faulty. The ADF controller PCB is faulty. Detection When the belt motor drive signal is generated, no clock signal is detected for 100 msec. 5.1.2 E404 0011-7874 Cause Cause The delivery motor (M5) is faulty. The delivery motor clock sensor (PI11) is faulty. The ADF controller PCB is faulty. Detection When the delivery motor drive signal is generated, no clock signal is detected for 200 msec. 5.1.3 E405 0011-7875 Cause The separation motor (M4) is faulty. The separation motor clock sensor (PI2) is faulty. The ADF controller PCB is faulty. Detection When th

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