Page 3 Copyright The title to this document belongs to Canon Inc., and no part of it must be reproduced, quoted, or trans- lated into another language without the consent of Canon Inc. in writing. COPYRIGHT © 2000 CANON INC.
Page 4 REF. Provides a description of a service mode. Provides a description of the nature of an error indication. Refers to the Copier Basics Series for a better understanding of the contents. COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 5 INTRODUCTION 2 Outline of the Sevice Manual This Service Manual contains basic information needed to service the DADF-G1 in the field, conducted for the purpose of maintaining its product quality and a specific level of performance. This Service Manual consists of the following chapters: Chapter 1 General Description shows the features and specifications of the machine, as well as the names of parts and how to operate it.
Page 6: Table Of Contents
(SDIR), and Pickup Motor 2.3.1 Outline ......2-9 Rotation Speed Control 2.3.2 Detecting the Presence/ Signal (SMPWM) ..2-26 Absence of an Controlling the Belt Original ....... 2-10 Motor ........2-27 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 7 Pickup Roller Unit ....3-18 Pickup Drive Assembly ..3-51 Pickup Roller ...... 3-21 5.1.1 Rear ......3-51 Separation Belt Unit ... 3-22 5.1.2 Front ......3-51 Feed Roller Unit ....3-23 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 8 Diagram (2/6) ....... A-5 List of Signals/Abbreviations ..A-2 DADF Controller Circuit General Circuit Diagram ..... A-3 Diagram (3/6) ....... A-6 DADF Controller Circuit DADF Controller Circuit Diagram ........A-4 Diagram (4/6) ....... A-7 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 9 DADF Controller Circuit Indicator PCB Circuit Diagram (5/6) ....... A-8 Diagram ........A-11 DADF Controller Circuit List of Special Tools ....A-12 Diagram (6/6) ....... A-9 List of Solvents/Lubricants ..A-13 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 11: Features
1.1 Identifying the Size of Originals The machine checks the length (feed direction) and the width of an original to find out its size and communicate the result to the host copier. COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 12: Specifications
A UFG xxxx INCH/AB RRR xxxx Operating environment Temperature range Same as host copier. Humidity range Same as host copier. The above specifications are subject to change for product improvement. T01-200-01 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 13 • Sheets with clips or glue. • Sheets with curl, wrinkle, or bend. The same original must not be used on the machine more than once to pre- vent damage to the original. REF. COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 14: Names Of Parts
[3] Feed roller [8] Paper retaining plate [13] Paper stopper plate [4] Separation belt [9] Pickup roller [14] Feed belt drive roller [5] Separation flapper [10] Feed belt slave roller [15] Registration roller COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 15: Operating The Machine
3) Place the originals on the original tray with the first page on top. 4) As necessary, set the appropriate mode on the host copier. 5) Press the host copier’s Start key. COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 16 Check the parts of the machine. If any part is soiled, wipe it using solution of mild deter- gent. (Be sure to dry wipe afterward to remove all residues of detergent.) 4.3.4 Separation Belt and Feed Roller Clean them using the host copier’s user mode. COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 18: Basic Construction
DADF controller PCB Sensor Motor (Q1) Variable (Q2) Solenoid resistor (Q4) Clutch Communi- cation IC (Q3) Brake 5-VDC Indicator power Motor LED PCB supply Accessories power supply Host copier F02-101-01 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 19 The machine’s IPC communication mode is known as IPC communication 2, which dif- fers from the existing mode in that it enables exchanges of data at a higher speed. RSOUT Communi- Communi- RSIN cation IC cation IC Host copier Machine F02-102-01 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 20 J207 J9-A1 Delivery sensor EJTS1 When original is detected, ‘1’. (light-blocking plate is at sensor) J208 Pickup sensor J9-A4 When original is detected, ‘1’. SPRS (light-blocking plate is at sensor) F02-103-01 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 21 J101-3 J8-3 Recirculation When recirculating lever is sensor placed on topmost original, ‘1’. J218 J8-7 Original width Detects width of original WIDTH detecting volume placed on original tray. (analog signal) F02-103-02 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 22 See p. 2-45. J102-1 J8-5 Recirculation J101 -5 motor RSDRV When ‘0’, recirculation motor (M4) turns on. LED101 LED102 When ‘0’, Original Set ORGLED J101-4 indicator turns on. Indicator PCB F02-104-01 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 23: Outline
(M3) delivers originals to the deliv- ery tray. The clutch (CL) is designed to engage or disengage the drive from the feed motor (M2) or the belt motor (M3). DADF controller PCB Indicator F02-201-01 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 24: Operations
(last page), and places them on the copyboard glass one by one. As each original is copied, it moves it from the copyboard glass back to the original tray. Original Original tray Placement Delivery 1 Pickup 2 Delivery 2 Copying F02-202-01 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 25 Reversing the Original, Copying the 2nd Size, Copying the 1st Side, and Delivering the Original Pickup Copying 2nd side Scanner 1st side pickup Reversing from 2nd side to 1st side Copying 1st side Reversing from 1st side to 2nd side Delivery F02-202-02 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 26: Detecting Originals
2. size of the originals placed on the original tray. 3. number of originals to find out whether all have been copied. 4. trailing edge of the last original. Original Set indicator Original Original tray F02-203-01 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 27: Detecting The Size Of Originals
The machine identifies the size of an original in terms of its vertical (feeding direction) and horizontal directions. b. Detection in Vertical Direction (feeding direction) Detection in vertical direction is performed using the registration paper sensor (S3) and the registration roller clock sensor (S11). 2-10 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 28 (VR). The VR operates in conjunction with the side guide, changing its resistance. The DADF controller PCB detects the changes in resistance, and converts the result into a length in horizontal direction. Side guides DADF controller PCB F02-203-04 2-11 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 29 Each default size allows a margin of ±10 mm in vertical direction and ±5 mm in horizon- tal direction; a size falling outside will be identified as being a non-default size. 2-12 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 30 Each default size allows a margin of ±10 mm in vertical direction and ±5 mm in horizon- tal direction; a size falling outside will be identified as being a non-default size. 2-13 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 31: Detecting The Trailing Edge Of The Last Original
(generating the RSS signal) so that its host copier will not pick up the next sheet of paper. Recirulating lever 2nd original F02-203-05 2-14 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 32: Picking Up Originals
After pickup, the original is moved between the separation belt and the feed roller to prevent double-feeding. Paper retaining plate Separation belt Paper stopper plate Feed roller Pickup sensor (S7) F02-204-02 2-15 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 33 Registration roller F02-204-03 3) Feeding The feed belt, registration roller, and feed roller are rotated to move the original to the copyboard glass. Feed roller Registration roller Feed belt F02-204-04 2-16 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 34 Large size T02-204-01 In the case of small-size originals, the originals are moved beyond the reg- istration roller so as to reduce the feed time. Scanner Ahead of registration roller F02-204-05 2-17 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 35 (M2) Belt motor (M3) Clutch (CL1) Paper stopper (SL1) plate solenoid Paper retaining (SL2) solenoid Brake (BK1) : Low-speed CW: feed belt CW rotation CCW: feed belt CCW rotation F02-204-06 2-18 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 36: Reversing Originals
While the scanner is moving in reverse, the original is reversed, and the first original is placed on the copyboard glass. The original is delivered when its 1st side has been copied. F02-205-03 2-19 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 37: Sequence Of Operations (Reversal)
Pickup motor Feed motor (M2) Low-speed Low-speed (M3) Belt motor Paper deflecting (SL3) plate solenoid (CL) Clutch Brake (BK) CW: feed belt CW rotation CCW: feed belt CCW rotation F02-205-04 2-20 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 38: Delivery
CHAPTER 2 OPERATIONS AND TIMING 2.6 Delivery 2.6.1 Outline The machine is designed to deliver originals to the original tray. Original tray F02-206-01 2-21 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 39: Delivery Operations
As soon as the trailing edge of the origi- nal moves past the delivery roller, the feed motor switches to low-speed rota- tion to limit the impact of delivery. Scanner F02-2-6-05 2-22 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 40 Reversal sensor (S8) Delivery sensor (S6) Pickup motor (M1) Feed motor (M2) Belt motor (M3) Clutch (CL1) Brake (BK1) CW: feed belt CW rotation CCW: feed belt CCW rotation F02-206-07 2-23 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 41 Pickup motor (M1) Feed motor (M2) Belt motor (M3) Clutch (CL1) Brake (BK1) Picking up in passing (SL1) : Low-speed CW: feed belt CW rotation CCW: feed belt CCW rotation F02-206-08 2-24 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 43: Signal (Smpwm)
‘0’ Pickup roller rotates CCW by inertia. ‘1’ ‘0’ Pulse Pickup roller rotates CW. ‘1’ ‘0’ ‘0’ Pickup roller rotates CW by inertia. ‘0’ ‘1’/‘0’ ‘1’/‘0’ Pickup roller stops. T02-207-01 2-26 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 44: Controlling The Belt Motor
(M3) will always rotate at a specific speed. DADF controller PCB Belt motor J7-1 BMON BDIR Drive circuit BMPWM J7-2 Belt motor clock sensor BCLK1 J9-B4 F02-208-01 2-27 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 45: Relationship Between The Feed Belt And The Belt
An overcurrnt can occur depending on the type and condition of an original. An overcurrent control circuit is used to protect the power supply circuit against excess loads because of overcurrent while the belt is moving in pickup direction. 2-28 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 46 The sensor (S3) remains on even when the 1st original has been placed on the copyboard glass. Original The sensor (S3) has not detected the leading edge of an original at the start of pickup. T02-209-01 2-29 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 47 An original has been detected on the copyboard glass when picking up the first original (1st side). Recirculating The recirculating lever swung idly without coming lever idle swing into contact. (2nd or subsequent original) T02-209-02 2-30 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 48 As a rule, the detection of a condition caused by the first original is identi- fied as “improperly placed original,” and jams are identified starting with REF. the second original. 2-31 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 49 When an original is found to be improperly placed, the machine will communicate the fact to its host copier, which indicates it in its service mode. 2-32 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 51 The machine may be reset by removing all originals from the original tray. Some host copiers indicate a message. Be sure to check the message and follow the instructions, if any, to correct the placement of originals. 2-34 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 52 Circuit breaker (CB1) Sensor (S1toS14) Original width detecting volume (VR) Indicator LED Logic Fuse resistor (LED101,102) (R26) J1-6 24VL Regulator Recirulating motor (M4) IC (Q14) Host copier DADF controller PCB F02-301-01 2-35 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 54: Basic Construction
1.1.1 Detaching the DADF 1) Turn of the host copier. 2) Disconnect the machine’s communica- tion cable from the host copier. 3) Fully open the machine. F03-101-02 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 55 When lifting it, avoid holding the delivery assembly; other- wise, delivery faults can occur. (Hold it as indicated in the fig- ure.) COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 56: Removing The Covers
CHAPTER 3 MECHANICAL SYSTEMS 1.1.2 Removing the Covers 1) Remove the seven mounting screws [1] used to hold the covers in place. F03-101-04 F03-101-05 F03-101-06 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 57 The original tray is connected with a cable. Take care not to damage the cable during the work. F03-101-07 3) While avoiding the original tray, detach the main cover and the front cover. COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 58: Side Guide Lock
1) Loosen the screw [1], and free the side guide lock [2]. F03-101-08 Be sure to adjust the side guide to the original before making a copy. Otherwise, the original will tend to move askew. COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 59: Switches
DADF 10 to100mm Copier F03-102-02 1.2.2 Upper Cover Switch (MS2) 1) Check to make sure that both front and rear upper cover switches turn on when the upper cover is closed. COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 60: Mounting The Original Width Detecting Volume
1) Loosen the screw [2], and free the side guide lock [1]. F03-102-03 2) Fully open the side guides at the rear [3] and at the front [4]. F03-102-04 3) Mount the gear [5]. F03-102-05 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 61 [8]; then, connect the connector [9]. F03-102-07 6) Engage the side guide lock freed in step 1), and execute original width detecting volume adjustment. (For details of in- structions, see p. 5-13.) COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 62: Adjusting The Height Of The Machine
±0.1 mm from the side size plate of the copyboard glass when the machine is closed. F03-103-01 2) After adjustment, check to make sure that the front rubber feet (left, right) are firmly in contact with the copyboard glass. COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 63: Drive System
2) As necessary, remove the tie-wraps. 3) Disconnect the connector J12 [2] of the DADF controller PCB [1]. F03-201-01 4) Remove the screw [3], and disconnect the cable guide [4]. F03-201-02 3-10 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 64: Removing The Feed Motor Unit
2.2 Removing the Feed Motor Unit 1) Remove the pickup motor unit. 2) As necessary, remove the tie-wraps. 3) Disconnect the connector J11 [2] of the DADF controller PCB [1]. F03-202-01 3-11 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 65 4) Disconnect the connector [3] of the feed motor clock sensor (S9), and remove the two screws [4]. F03-202-02 5) Detach the two drive belts [5], and de- tach the feed motor unit [6]. F03-202-03 3-12 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 66: Belt Motor Unit
4) Remove the four screws [3], and detach the right hinge unit [4]. F03-203-01 5) Disconnect the connectors J6 [1], J7 [2], and J13 [3] of the DADF controller PCB. F03-203-02 3-13 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 67 [5] on the machine; then, remove the three screws [6]. F03-203-04 8) Detach the timing belt [7] from the side of the feed belt drive roller [8], and de- tach the belt motor unit [5]. F03-203-05 3-14 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 68: Making Adjustments
2) Push up the belt tensioner [4] under a force of 500 ±50 g, and fix it in place with a screw [5]. Gauge spring: capable of measuring a force of 600 g (tool No.: CK-0058). F03-203-07 3-15 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 69: Removing The Clutch Unit
CHAPTER 3 MECHANICAL SYSTEMS 2.4 Removing the Clutch Unit 1) Remove the clutch motor unit [1]. 2) Detach the drive belt [2]. F03-204-01 3) Remove the E-ring [3]. 3-16 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 70 4) Shift the bush [4], and detach the clutch unit [5]. F03-204-02 When mounting the clutch unit, make sure that the clutch stop ring [6] and the stopper [7] of the mounting base en- gage. F03-204-03 3-17 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 71: Feed System
2) Remove the two screws [1], and detach the original tray mounting plate [2]. F03-301-01 3) Remove the two screws [3], and detach the original inlet guide plate [4]. F03-301-02 3-18 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 72 4) Remove the pickup motor unit. 5) Remove the E-ring [5], and detach the gear [6]. (Take care not to lose the pin.) F03-301-03 6) Remove the E-ring [7], and detach the bush [8]. F03-301-04 3-19 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 73 [10]. [10] F03-301-05 8) Detach the timing belt [11], and remove the E-ring [12] and the gear [13]. (Take care not to lose the pin.) [11] [13] [12] F03-301-06 3-20 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 74: Pickup Roller
1) Open the upper cover. 2) Turn the pickup roller [5] until it is as shown in the figure; then, remove the screw [6], and detach the pickup roller [5]. F03-302-01 3-21 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 75: Separation Belt Unit
2) Open the upper cover. 3) Detach the reversing roller drive belt [1]. F03-303-01 4) Remove the two screws [2], and detach the separation belt unit [3] together with the fixing plate [4]. F03-303-02 3-22 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 76: Feed Roller Unit
2) Remove the two screws [1], and detach the original tray mounting plate [2]. F03-304-01 3) Remove the two screws [3], and detach the original inlet guide plate [4]. F03-304-02 4) Detach the separation belt unit. 3-23 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 77 [6]. F03-304-03 6) Remove the two screws [8], and detach the inside guide plate [7]. F03-304-04 7) Remove the screw [9], and detach the [10] stopper [10]. F03-304-05 3-24 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 78 (Take care not to lose the pin.) [14] [13] F03-304-06 10) Remove the E-ring [16], and shift the [16] [17] [18] arm [17] and the gear [18] in the direc- tion of the arrow. F03-304-07 3-25 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 79 2) Detach the machine from its host copier. 3) Remove the feed roller unit. 4) Remove the pickup motor unit. 5) Remove the four screws [2], and detach the right hinge unit [1]. F03-305-01 3-26 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 80 CHAPTER 3 MECHANICAL SYSTEMS 6) Remove the E-ring [3], and detach the bush [4]. F03-305-02 7) Remove the screw [5], and detach the solenoid base [6]. F03-305-03 3-27 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 81 8) Remove the spring [7] and the screw [8]; then, detach the arm [9]. F-3-305-04 9) Remove the E-ring [10] and the bush [10] [11] [12] [11]; then, detach the link arm shaft [12]. F03-305-05 3-28 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 82 10) Remove the two screws [13], and detach [14] the sensor base [14]. [13] F03-305-06 11) Remove the E-ring [15], tension spring [16] [18] [17] [15] [16], bush [17], and two screws [18]. [18] F03-305-07 3-29 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 83 [20] F03-305-08 13) Remove the grip ring [23], tension [25] [24] [23] [26] spring [24], bush [25], and two screws [26]; then, detach the registration roller [27]. [27] [26] F03-305-09 3-30 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 84 [2], timing belt [3], and bush [4]. (Take care not to lose the pin.) F03-306-01 5) Remove the gear [5]. (Take care not to lose the pin.) F03-306-02 3-31 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 85 REF. F03-306-03 6) Remove the grip ring [6], and remove the bush [7]. F03-306-04 [10] [11] [12] 7) Remove the screw [9], and remove the lower guide stopper [10]. F03-306-05 3-32 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 86 9) Remove the screw [13], and detach the [13] sensor cover [12]; then, disconnect the sensor connector [14] from under to shift up and detach the registration sen- [12] sor [15]. F03-306-07 [14] [15] F03-306-08 3-33 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 87 11) Remove the two screws [17] from the rear and the two screws [18] from the rear; then, detach the reversing plate [19] by moving it down. [17] F03-306-10 (front) [19] [18] F03-306-11 (rear) 3-34 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 88 CHAPTER 3 MECHANICAL SYSTEMS 12) Remove the four screws [20], and de- [21] tach the front side plate [21]. [20] F03-306-12 13) Remove the delivery/reversing roller [22] [22]. F03-306-13 3-35 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 89 CHAPTER 3 MECHANICAL SYSTEMS 3.7 Delivery Roller Unit 1) Remove the main cover. 2) Remove the pickup motor. 3) Remove the screw [1]. F03-307-01 4) Remove the two E-rings [2]. F03-307-02 3-36 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 90: Reversing Guide
F03-307-03 3.8 Reversing Guide 1) Remove the main cover. 2) Remove the gear [1], and detach the timing belt [2]. F03-308-01 Remove the gear while freeing the lock. REF. F03-308-02 3-37 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 91 CHAPTER 3 MECHANICAL SYSTEMS 3) Remove the front [3] and the rear [4] of the reversing guide spring. F03-308-03 F03-308-04 4) Remove the screw [5], and detach the solenoid unit [6]. F03-308-05 3-38 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 92 [11], and fixing pin [12]; then, detach the reversing guide [13]. When mounting the fixing pin, be sure to put it back to its ini- tial position. [13] [12] [11] [10] F03-308-07 3-39 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 93: Stopper Plate Solenoid
2) Remove the two screws [1], and detach the original tray mounting plate [2]. F03-309-01 3) Remove the two screws [3], and discon- nect the connector [4]; then, detach the stopper plate solenoid [5]. F03-309-02 3-40 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 94: Making Adjustments
3.10 Adjusting the Position of the Paper Deflecting Plate Sole- noid (SL3) 1) Remove the main cover. 2) Loosen the fixing screw [1], and secure the solenoid [2] in position where its 4.5mm stroke is 4.5 mm. F03-310-01 3-41 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 95: Feed Belt
1) Remove the main cover. 2) Remove the front spring [1]. F03-311-01 3) Free the rear spring [2] from the hook [3]; then, engage it on the temporary hook [4]. F03-311-02 3-42 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 96 4) Remove the screw [5], and detach the solenoid [6]. F03-311-03 Take care not to lose the pin attached to the solenoid arm. 5) Remove the four screw [8], and detach the side plate [7]. F03-311-04 3-43 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 97 CHAPTER 3 MECHANICAL SYSTEMS 6) Remove the three screws [9], and detach [10] the delivery unit crossmember [10]. F03-311-05 7) Pull out the feed belt [11] to the front. [11] F03-311-06 3-44 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 98: Cleaning
3) Press the push switch (SW3) to execute separation belt cleaning. 4) When cleaning has ended, press the push switch (SW3), and shift all its bits to OFF. 5) Mount the DADF controller cover. 3-45 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 99: Sensors
4.2.1 Cleaning the Original Sensor (S1) 1) Remove the two screws [1], and detach the original tray mounting plate [2]. F03-402-01 2) Clean the sensor (S1) [3] shown in the figure. F03-402-02 3-46 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 100: Original Sensor Reflecting Segment
1) Detach the separation belt unit. 2) Remove the four screws [2], and detach the separation guide plate [1]. F03-402-04 3) Remove the two screws [4], and detach the inside guide plate [3]. F03-402-05 3-47 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 101: Registration Sensor Led3
[3]. F03-402-06 4.2.4 Registration Sensor LED3 1) Remove the screw [3], and detach the registration sensor LED3 cover [2] from the reversing roller unit [1]. F03-402-07 3-48 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 102: Separation Flapper
2) Remove the separation flapper at the rear [1] and at the front [2]. • To facilitate detachment, push the mount in the direction of the arrow. F03-403-01 3-49 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 103: Separation Front Guide
2) Remove the separation flapper at the rear and at the front. (See the appropri- ate instructions.) 3) Clean the eight faces of the separation front guide which come into contact with paper using alcohol. F03-404-01 3-50 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 104: Lubricating
5.1 Pickup Drive Assembly Apply lubricant to the areas indicated in Apply lubricant. the figure. 5.1.1 Rear Took No.: CK-0551-020 Pickup motor unit F03-501-01 5.1.2 Front Apply lubricant. Tool No.: CK-0551-020 F03-501-02 3-51 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 106: Periodically Replaced Parts
Separation flapper (rear) FF5-9583-000 1 250,000 sheets Separation flapper (front) FF5-9584-000 1 250,000 sheets The above values are estimates only and are subject to change based on fu- ture data. T04-200-01 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 107 Or 6 months, whichever is earlier. Vertical size plate Feed belt retaining roll spring Upon replacement of feed belt Apply lubricant where the spring comes into contact with the feed belt retaining roll. T04-300-01 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 110: Standards And Adjustments
Machine” in advance; be sure to per- form “Correcting the Original Skew,” “Ad- justing the Distance to the Horizontal Size Plate,” and “Adjusting the Original Leading Edge Stop Position,” in the order indicated. COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 111 4) Press the push switch (SW3) on the 4 1 2 10 1 DADF controller PCB once. • The copy paper will be picked up and stopped on the copyboard glass. DSW1 J9 A12 J12 F05-101-05 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 112 Adjusting screw F05-101-07 When turning the adjusting screw, be sure to force the Hinge unit (right) hinge assembly in the direc- tion of arrow A. Adjusting screw Pillar (right) F05-101-08 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 113 3) Press the push switch (SW3) on the 4 1 2 10 1 DADF controller PCB once. • The copy paper will be fed and stopped on the copyboard glass. DSW1 J9 A12 J12 F05-101-10 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 114 Fixing screw screws and the positioning Fixing Positioning screw screw. Otherwise, the original screw may jam. F05-101-13 • Relationship Between Original Tray Direction of shift Decreases Increases T05-101-02 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 115 3) Press the push switch (SW3) of the 4 1 2 10 1 DADF controller PCB once. • The copy paper will be fed and stopped on the copyboard glass. DSW1 J9 A12 J12 F05-101-15 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 116 To rear To left T05-101-03 Holding down the push switch DADF will not result in a change of more than 0.34 mm. Copy paper Leading Trailing edge edge Copyboard glass F05-101-18 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 117 Press the push switch (SW1) three times and then the push switch (SW3) once so that the copy paper will be discharged and the new setting will bostored. COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 118: Adjusting The Dadf Open/Close Switch (Ms1)
(MS1) turns on and off when the machine is 10 to 100 mm from the copyboard glass. [1] DADF switch (MS1) [2] Retaining plate F05-101-19 DADF 10 to 100mm Host copier F05-101-20 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 119: Adjusting The Separation Belt Pressure
Vertical direction Copy paper (A4) 10 mm (approx.) Put tape on both sides. Open a hole. 70 mm (approx.) 35mm 20 mm (approx.) 300 mm (approx.) F05-101-22 5-10 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 120 6 to ON to select separation belt/ feed roller cleaning mode (service mode). Be sure to remove all copy pa- DSW1 per from the original tray. J9 A12 J12 F05-101-25 5-11 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 121 Spring gauge: capable of measuring about 600 g (Tool No.: CK-0058) F05-101-26 Measuring the Feeding Force (front) 7) Open the machine’s upper cover to end the measurement. 5-12 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 122 Direction of turn Feeding power Clockwise Decreases Counterclockwise Increases Guide: a 90° turn of the adjusting screw will change the feeding power by about 25 g. T05-101-05 Adjusting Screw and Feeding Power 5-13 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 123 11) Shift bit 6 of the DIP switch (DSW1) 4 1 2 10 1 on the DADF controller PCB to OFF to end service mode. DSW1 J9 A12 J12 F05-101-28 12) Mount the DADF controller cover. 5-14 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 124: Electrical
1) Remove the machine’s cover, and shift 4 1 2 10 1 bit 4 of the DIP switch (DSW1) of the DADF controller PCB to ON. DSW1 J9 A12 J12 F05-102-02 5-15 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 125 • The two LEDs will turn off to end ad- justment. 4) Shift the bits of the DIP switch (DSW1) on the DADF controller PCB back to their initial positions. 5-16 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 126: Adjusting The Original Width Detecting Volume (Vr1)
10 1 DSW1 J9 A12 J12 F05-102-04 3) Place copy paper in A4/LTR orientation on the original tray, and adjust the side guide to suit the width of the paper. F05-102-05 5-17 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 127 • If adjustment fails, LED1 and LED2 on the DADF controller PCB flash. J9 A12 J12 F05-102-08 7) Shift all bits of the DIP switch (DSW1) on the DADF controller PCB back to their initial positions. 5-18 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 128 (The pickup assembly operates.) 4) Press the push switch (SW3) once. 5) Shift the bits of the DIP switch (DSW1) on the DADF controller PCB back to their initial positions. 5-19 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 129: Troubleshooting
Start key? YES: Check the wiring from the pickup motor (M1) to the DADF con- troller PCB; if normal, replace the pickup motor (M1). Replace the DADF controller PCB. 5-20 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 130: E402 Indicator
23 V in response to a press on the Start key? YES: Check the wiring from the feed motor (M2) to the DADF control- ler PCB; if normal, replace the feed motor (M2). Replace the DADF controller PCB. 5-21 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 131: E411 Indicator
1. Is the reading of the digital multimeter 1.2 V or less? Adjust the position of the sensor. Sensor 5) Is the problem corrected after step 4? YES: End. Replace the sensor. 5-22 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 132: E712 Indicator
+probe -probe 1 J2-1 J2-2 2 J1-6 DADF controller PCB 3) Try replacing the DADF controller PCB. Is the problem corrected? YES: End. Replace the host copier’s reader controller PCB. 5-23 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 133: Arrangement Of Electrical Parts
CHAPTER 5 TROUBLESHOOTING 3 Arrangement of Electrical Parts 3.1 Motors, Solenoids, and Sensors LED102 LED101 F05-301-01 5-24 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 134 Pickup sensor Reversal sensor Feed motor clock sensor Belt motor clock sensor Registration roller lock sensor Delivery motor clock sensor Recirculation sensor LED101 Original Set indicator LED102 Original Set indicator T05-301-01 5-25 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 135: Pcbs
CHAPTER 5 TROUBLESHOOTING 3.2 PCBs F05-302-01 Ref. Name Description DADF controller PCB DADF control Indicator PCB Original Set indicator T05-302-01 5-26 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 136: Variable Resistors (Vr), Light-Emitting Diodes, And Check Pins By Pcb
2. VR that may be used in the DSW1 field ......VR that must not be used in J9 A12 J12 the field ....F05-401-01 5-27 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 137 1) Turn off the machine’s power switch. 2) Shift bit 4 of the DIP switch (DSW1) 4 1 2 10 1 on the DADF controller PCB to ON. DSW1 J9 A12 J12 F05-401-02 5-28 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 138: Indicator Pcb
Check the position of that sen- sor. 4.2 Indicator PCB LED101 LED102 J102 F05-402-01 Description LED101 Original Set indicator LED102 Original Set indicator T05-402-01 5-29 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 139: Functions Of The Dip Switch
Each press on the push switch (SW3) of the check DADF controller PCB causes the original tray paper sensor and the registration sensor to be in level check mode. T05-403-01 5-30 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 140 (SW3) once again. Original size Use it to store the position of the original horizontal tray inside guide for A4 or LTR. direction detection (adjustment using A4) adjustment (adjustment using LTR) T05-403-02 5-31 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 141: Self Diagnosis
2. If the machine is out of order, copies may be made by opening the ma- chine and placing originals on its host copier’s copyboard. 5-32 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 143 10 Stopper plate solenoid (SL1) 11 Paper retaining solenoid (SL2) (BK1) 12 Brake (M5) 13 Delivery motor : Motor low-speed rotation CW: CW (copy mode delivery direction) rotation CCW: CCW (pickup direction) rotation COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 144 PICK-UP MOTOR DRIVE Command SMPWM PICK-UP MOTOR SPEED CONTROL Command STPSLD STOPPER SOLENOID DRIVE Command UPCC UPPER COVER CLOSED Signal 1 CVRSW UPPER COVER CLOSED Signal 2 WGTSL WEIGHT SOLENOID DRIVE Command COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 145 (white) J302 Pickup sensor Reversal sensor Paper deflecting Delivery sensor Feed motor Belt motor plate solenoid clock sensor clock sensor LED3 Registration paper sensor Registration paper sensor (light-receiving segment) (light-receiving segment) COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 146: Dadf Controller Circuit Diagram (1/6
P61/BREQ* STPSL P40/D0 TURNS CTS1* P60/WAIT* FLPSL1 P41/D1 P42/D2 SMPSL P53/A19 BDIR P43/D3 P52/A18 P51/A17 FG/CLK P44/D4 P50/A16 P45/D5 P27/A15 P46/D6 P26/A14 RESETB* PGM* 11 12 13 DSW1 RESETA* RESET VOUT COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 147: Dadf Controller Circuit Diagram (2/6
+24U N.IN N.IN ININ ININ ROUT TCON OCON OPSW +24V CVRPSV SOLTMOR CVRSW >CK +24V RSSENS +24V ORGLED +24V RSMON KC< RSDRV STPSL RESETB* RSSENS WIDTH SL SWCLK +24V WGTSL R128 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 148: Dadf Controller Circuit Diagram (3/6
4.3 DADF Controller Circuit Diagram (3/6) +24V BMPWM BELT_MTR BDIR BMON +24U – – +24V R133 R134 SMPWM SPR_MTR SDIR SMON +24V FEED_MTR FMPWM R140 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 149 4.4 DADF Controller Circuit Diagram (4/6) +24V EJCT_MTR EMPWM R141 +24V STAMP SL SMPSL R129 R113 CP10 R114 R115 EJTS2 R130 R131 R132 ECLK COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 150 – R110 R104 R111 R145 R112 R147 EMPLED R146 +24U DCTS – R149 R148 R106 R150 R107 R105 RCLK R154 +24U +24U – R151 R153 EMPS – R156 R152 R155 R157 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 151 4.6 DADF Controller Circuit Diagram (6/6) R116 R160 EDTCT* R119 R117 R118 RXD2 R159 R120 TXD2 R121 R124 R122 R123 RXD1 R158 R125 TXD1 R126 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 153 A: Each service person is expected to carry one. REF. B: Each group of five service persons is expected to carry one. C: Each workshop is expected to carry one. A-12 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...
Page 154 (isopropyl alcohol) ⋅ Tool No.: Lubricant Lubricating Silicone oil CK-0551 (20 g) ⋅ Cleaning tissue, Cleaning Cleaning: tissue e.g., feeding belt, Tool No.: TKN-0454 copyboard cover, copyboard glass T0A-700-01 A-13 COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000...

Canon DADF-G1 Service Manual

Chapter 1 General Description

Chapter 2 Operations and Timing

Chapter 3 Mechanical Systems

Chapter 4 Maintenance and Inspection

Chapter 5 Troubleshooting

Quick Links

Troubleshooting

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Summary of Contents for Canon DADF-G1

Table of Contents