Download - Canon DADF-C1 Service Manual Ingles
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
REVSION 0
JAN. 1999 FY8-13FM-000
DADF-C1
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
IMPORTANT
THIS DOCUMENTATION IS PUBLISHED BY CANON INC., JAPAN, TO SERVE AS A SOURCEOF REFERENCE FOR WORK IN THE FIELD.SPECIFICATIONS AND OTHER INFORMATION CONTAINED HEREIN MAY VARY SLIGHTLYFROM ACTUAL MACHINE VALUES OR THOSE FOUND IN ADVERTISING AND OTHERPRINTED MATTER.
ANY QUESTIONS REGARDING INFORMATION CONTAINED HEREIN SHOULD BE DIRECTEDTO THE COPIER SERVICE DEPARTMENT OF THE SALES COMPANY.THIS DOCUMENTATION IS INTENDED FOR ALL SALES AREAS, AND MAY CONTAIN IN-FORMATION NOT APPLICABLE TO CERTAIN AREAS.
COPYRIGHT © 1999 CANON INC.
Printed in JapanImprimé au Japon
Use of this manual should be strictly su-
pervised to avoid disclosure of confidential
information.
Prepared by
OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DEPARTMENT 1
OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DIVISION
CANON INC.
5-1, Hakusan, 7-chome, Toride-City, Ibaraki-Pref., 302-8501, Japan
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) i
INTRODUCTION
This Service Manual provides information needed to service the DADF in the field. ThisService Manual consists of the following chapters:
Chapter 1 “General Description” introduces the DADF’s features and specifications, andshows how to operate it.
Chapter 2 “Basic Operation” introduces the ADAF’s mechanical and electrical systems; italso explains the principles used in these systems and the timing at which they areoperated with reference to the ADAF’s electrical circuitry.
Chapter 3 “Mechanical System” explains the ADAF’s mechanical construction and how itsparts may be disassembled/assembled and adjusted.
Chapter 4 “Maintenance and Servicing” provides tables of periodically replaced parts andconsumables/durables and scheduled servicing charts.
Chapter 5 “Troubleshooting” provides tables of maintenance/inspection, standards/adjustments, and problem identification (image fault/malfunction).
Appendix contains a general timing chart and general circuit diagrams.
The descriptions in this Service Manual are subject to change without notice for productimprovement or other purposes, and major changes will be communicated in the form of ServiceInformation bulletins.
All service persons are expected to have a good understanding of the contents of this ServiceManual and all relevant Service Information bulletins, and be able to identify and isolate faults inthe machine.
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) iii
CONTENTS
CHAPTER 1 GENERAL DESCRIPTION
I. FEATURES..................................1-1II. SPECIFICATIONS .......................1-2
A. DADF-C1 ................................1-2III. NAMES OF PARTS .....................1-4
A. External View .........................1-4B. Cross Section .........................1-4
IV. OPERATION................................1-5A. Original Set Indicator .............1-5B. Warnings and Actions ............1-5C. Routine Maintenance by the
User ........................................1-6
CHAPTER 2 BASIC OPERATION
I. BASIC CONSTRUCTION ...........2-1A. Outline of the Electrical
Circuitry ..................................2-1B. Communication with
the Copier ..............................2-2C. Inputs to the DADF Controller
PCB ........................................2-3D. Outputs to the DADF Controller
PCB ........................................2-5II. BASIC OPERATION....................2-6
A. Outline ....................................2-6B. Operation ...............................2-7C. Detecting Originals ............. 2-12D. Picking Up Originals............ 2-16
E. Reversal .............................. 2-20F. Reduced Page
Composition ........................ 2-22G. Delivery ............................... 2-24H. Controlling the Pick-Up
Motor ................................... 2-27I. Controlling the Belt
Motor ................................... 2-29J. Detecting Original
Jams .................................... 2-31K. Improper Placement of
Originals .............................. 2-34III. POWER SUPPLY ..................... 2-37
A. Outline ................................. 2-37
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)iv
CHAPTER 3 MECHANICAL SYSTEM
CHAPTER 4 MAINTENANCE AND SERVICING
I. BASIC CONSTRUCTION ...........3-1A. External Covers .....................3-1B. Switches .................................3-3C. Adjusting the DADF
Height .....................................3-5II. DRIVE SYSTEM .........................3-6
A. Removing the Pick-UpMotor Unit...............................3-6
B. Removing the FeederMotor Unit...............................3-6
C. Belt Motor ...............................3-7D. Removing the Clutch
Unit .........................................3-9E. Delivery Motor ..................... 3-10
III. FEEDING SYSTEM ................. 3-11A. Pick-Up Roller ..................... 3-11B. Removing the Separation
Belt Unit ............................... 3-12C. Feeding Roller Unit ............. 3-12D. Registration Roller .............. 3-14E. Delivery/Resersing
Roller ................................... 3-16
F. Delivery Roller Unit(bottom pick-up mode) ........ 3-20
G. Delivery Roller Unit(top pick-up mode) .............. 3-21
H. Reversing Guide ................. 3-22I. Stopper Plate Solenoid ....... 3-24J. Positioning the Paper Retaining
Plate Solenoid (SL2) ........... 3-25K. Positioning the Paper Deflecting
Solenoid (SL3) .................... 3-26L. Stamp Solenoid................... 3-26M. Feeding Belt ........................ 3-28
IV. CLEANING ............................... 3-31A. Belt Assembly ..................... 3-31B. Sensors ............................... 3-31C. Separation Guide ................ 3-34
V. FEEDING ................................. 3-35A. Pick-Up Drive Assembly ..... 3-35B. Right Delivery Drive
Assembly ............................. 3-35
I. PERIODICALLY REPLACEDPARTS .........................................4-1
II. CONSUMABLES ANDDURABLES .................................4-1
III. SCHEDULED SERVICINGCHART ........................................4-2
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) v
CHAPTER 5 TROUBLESHOOTING
APPENDIX
I. STANDARDS ANDADJUSTMENTS..........................5-1A. Mechanical System ................5-1B. Electrical System ................ 5-11
II. TROUBLESHOOTING ............. 5-15A. Troubleshooting
Malfunctions ........................ 5-15III. ARRANGEMENT OF THE ELEC-
TRICAL PARTS ........................ 5-20A. Motors, Solenoids, and
Sensors ............................... 5-20
B. PCB ..................................... 5-22IV. VARIABLE RESISTORS, LIGHT-
EMITTING DIODES, AND CHECKPINS BY PCB........................... 5-23A. DADF Controller PCB ......... 5-23B. Indicator PCB ...................... 5-25C. DIP Switch Functions .......... 5-26
V. SELF DIAGNOSIS ................... 5-28A. DADF Self Diagnosis .......... 5-28
A. GENERAL TIMING CHART ....... A-1B. NAMES AND ABBREVIATIONS OF
SIGNALS .................................... A-2C. DADF-C1 GENERAL CIRCUIT
DIAGRAM................................... A-3
D. DADF CONTROLLER CIRCUITDIAGRAM................................... A-4
E. DISPLAY BOARD..................... A-11F. SPECIAL TOOLS ..................... A-12G. SOLVENTS AND OILS............. A-13
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 1
GENERAL DESCRIPTION
I. FEATURES ..................................1-1II. SPECIFICATIONS........................1-2A. DADF-C1 ....................................1-2
III. NAMES OF PARTS ......................1-4A. External View..............................1-4B. Cross Section .............................1-4
IV. OPERATION ................................1-5A. Original Set Indicator..................1-5B. Warnings and Actions ................1-5C. Routine Maintenance
by the User .................................1-6
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 1-1
CHAPTER 1 GENERAL DESCRIPTION
I. FEATURES
1. Original Size IdentificationThe machine can identify the size of an original in terms of its length (feeding direction) and
width for communication to its host copier.
CHAPTER 1 GENERAL DESCRIPTION
1-2 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Item
Original pick-up
Original placement 1
Original placement 2
Original pick-up
Original type
Original size
Original tray
Delivery tray
Original processingmode
Original sizeidentification
Residual originaldetection
Continuous feeding
Size mix
Communication withcopier
Power supply
Maximum powerconsumption
Weight
Dimensions (mm)
Serial No.
Operating conditionsTemperatureHumidity
II. SPECIFICATIONS
A. DADF-C1
Specifications
Circulating, auto duplexing pick-up method
Face up
Center reference
Top pick-up
Sheet (50 to 105 g/m2), single-sided sheet,double-sided sheet
A5/STMT to A3/279×432 mm (11"×17")
If small size, 50 sheets, 5.5 mm high max. (A5,B5, B5R, A4, A4R, STMT, LTR, LTRR)
If large size, 25 sheets (B4, A3, LGL, 279×432mm (11"×17")
If small size, 50 sheets (A5, B5, B5R, A4, A4R,STMT, LTR, LTRR)
If large size, 25 sheets (B4, A3, LGL, 279×432mm (11"×17")
Single-sided, double-sided, reduce imagecomposition
Length (feeding direction) and width
Possible in conjunction with the host copier.
Possible
Possible
IPC 2
24 VDC (from the host copier)
170 W or less
14.8 kg (approx.)
684 (W) × 527 (D) × 161 (H)
AB ZRH xxxxxINCH/AB ZRJ xxxxxA ZRK xxxxxINCH/AB ZRL xxxxx
Same as the host copier.
Remarks
See p.2-17.
No extra length original.
Paper of 80 g/m2 or less.
Paper of 80 g/m2 or less.
Paper of 80 g/m2 or less.
Paper of 80 g/m2 or less.
Of the same width only.
Not including the deliverytray.
Not including the deliverytray.
Table 1-201
The above specifications are subject to change for product improvement.
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 1-3
CHAPTER 1 GENERAL DESCRIPTION
Note:The following must not be used as originals:
• A transparency or paper with an opacity of 80% or less.• A carbon-backed sheet.• A sheet with paste-ups or binding.• A sheet with a cut-off, hole, or tear.• A sheet with a clip or glue.• A sheet with curling, wrinkling, or creasing.
Caution:Do not feed the same original more than once to protect against damage.
CHAPTER 1 GENERAL DESCRIPTION
1-4 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
III. NAMES OF PARTS
A. External View
[1] [2] [3] [4] [5] [6] [7] [8]
Figure 1-301
[1] Upper cover[2] Side guide[3] Re-circulating guide[4] Original Set indicator[5] Original tray[6] Sub tray[7] Body cover[8] Original delivery tray
B. Cross Section
[1] [2] [3] [4] [5] [6] [7] [8] [9]
[15] [14] [13] [12] [11] [10]
Figure 1-302
[1] Reversing roller[2] Paper deflecting plate[3] Feeding roller[4] Separation belt[5] Pre-separation guide
[6] Delivery/pick-up roller[7] Paper retaining plate[8] Pick-up roller[9] Delivery roller[10] Feeding belt link roller
[11] Retaining rolls[12] Feeding belt[13] Paper stopper plate[14] Feeding belt drive roller[15] Registration roller
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 1-5
CHAPTER 1 GENERAL DESCRIPTION
IV. OPERATION
A. Original Set Indicator
The Original Set indicator turns on whenan original is placed on the original tray, andflashes when an original jams.
A4/B5A3/B4
Figure 1-401Operation1) If the original is B5R or larger or is A5 in
feeding length, open the original sub tray.2) Set the side guide to suit the size of the
original.
Reference:The side guide lock must be removed ifthe width of the original is larger than297 mm (A4/A3). For details, see 3.“Side Guide Lock” on p. 3-3.
3) Place the originals with the first page ontop.
4) As needed, set the appropriate copyingmode on the copier.
5) Press the copier’s Copy Start key.
B. Warnings and Actions
If the Original Set indicator flashes whilean original is being fed, suspect a jam andperform the following:1) Remove the originals from the original
tray.2) Open the upper cover, and remove the
jam. Then, open the DADF to reset thewarning. (If any original is on thecopyboard glass, remove it.)
Caution:If the jam is in the copier, the copier willrun jam recovery mode and willautomatically set the originals. Do notopen the DADF to reset.
3) Set the originals in correct order, and setthe stack in the DADF.
CHAPTER 1 GENERAL DESCRIPTION
1-6 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
C. Routine Maintenance by the User
Instruct the user to clean the following at least once a week:
1. Copyboard GlassWipe it with a cloth moistened with water or alcohol; then, dry-wipe it.
2. Feeding BeltWipe it with water or alcohol.
3. Other PartsClean all other parts of the DADF (if soiled) using a solution of mild detergent; then, dry-wipethem to remove any residue.
4. Feeding Belt and Feeding RollerExecute cleaning mode in the copier’s user mode.
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 2
BASIC OPERATION
I. BASIC CONSTRUCTION ............2-1A. Outline of the Electrical
Circuitry ......................................2-1B. Communication with the Copier .2-2C. Inputs to the DADF
Controller PCB ...........................2-3D. Outputs to the DADF
Controller PCB ...........................2-5II. BASIC OPERATION.....................2-6
A. Outline ........................................2-6B. Operation ....................................2-7C. Detecting Originals .................. 2-12
D. Picking Up Originals ................ 2-16E. Reversal .................................. 2-20F. Reduced Page Composition ... 2-22G. Delivery ................................... 2-24H. Controlling the Pick-Up Motor . 2-27I. Controlling the Belt Motor........ 2-29J. Detecting Original Jams .......... 2-31K. Improper Placement of
Originals .................................. 2-34III. POWRE SUPPLY ...................... 2-37
A. Outline ..................................... 2-37
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 2-1
CHAPTER 2 BASIC OPERATION
I. BASIC CONSTRUCTION
A. Outline of the Electrical Circuitry
The machine’s electrical mechanisms are controlled by the DADF controller PCB. Amicroprocessor (CPU) is used on the DADF controller PCB, and the microprocessor reads theinput signals from the sensors and the copier and generates signals used to drive DC loads (motors,solenoids) at such times as programmed in advance.
Sensor
Variable resistor
DADF controller PCB
CPU(Q1)
ROM(Q2)
RAM(Q4)
Communication IC(Q3)
24V
J2-1
J1-6
5V
5 VDC power supply
ACCPower Supply
Copier
Motor
Solenoid
Clutch
Brake
Indicator LED PCB Motor
Figure 2-101
CHAPTER 2 BASIC OPERATION
2-2 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
B. Communication with the Copier
The operation modes selected on the copier are communicated to the machine in an IPCcommunication method. Likewise, the operation states of the machine are communicated to thecopier in an IPC communication.
If an error occurs in the IPC communication, the copier’s self diagnosis function turns on toindicate “E712” on its control panel.
CommunicationIC
CommunicationIC
CPUCPU
RSOUT
RSIN
Copier DADF
Figure 2-102
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 2-3
CHAPTER 2 BASIC OPERATION
C. Inputs to the DADF Controller PCB
Inputs to the DADF Controller PCB (1/2)
DADF switch
MS1
MS2
S1 J203
J205
LED3
S3
S4
S5
S6
S7
J212
COM J2-3+24V
+5V
+5V
+5V
+5V
+5V
+5V
RFC
EMPS
ENTS
CVRSW
DCTS
EJTS1
SPRS
UPCC1
-4
1-2
J5-7
J9-B10-B9
-B12
J9-B6
J5-3
J9-A1
J9-A4-A6-A5
-A3-A2
-1-2
-B8-B7
-B11
-8-9
3
121
312
3
J207
J208
12
312
312
312
132
132
312
2
412
J3-
NO
COM
NO
Upper cover switch
Original traypaper sensor
Registration paper sensor
Upper coversensor
Pick-up roller sensor
Delivery sensor 1
Pick-up sensor
DADF controller PCB
When the DADF is open, '0'.
When the upper cover is open, '0'.
When an original blocks the sensor, '1'.
When an original blocks the sensor, '1'.
When the upper cover is open, '0'.(The light-blocking plate is at the sensor.)
When the pick-u roller is at the home position, '1'.(The light-blocking plate is at the sensor.)
When an original is detected, '1'.(The light-blocking plate is at the sensor.)
When an original is detected, '1'.(The light-blocking plate is at the sensor.)
Figure 2-103
CHAPTER 2 BASIC OPERATION
2-4 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Reversal sensor S8
3
1
2
J2093
1
2
J9-A7
-A9
-A8
+5V1
3
2
Feeder motorclock sensor
S9
1
2
3
J9-A12
-A11
-A10
+5V
Belt motorclock sensor
S10
1
2
3
J9-B5
-B4
-B3
+5V
Registration rollerclock sensor
S11
1
2
3
J5-4
-5
-6
+5V
Delivery sensor 2 S12
3
1
2
J2193
1
2
J14-4
-6
-5
+5V1
3
2
1
2
3
4
5
6
3
2
1
Delivery motorclock sensor
Re-circulationsensor
Original widthdetecting VR
S13
S14
VR
J219J14-3
-2
-1
+5V
+5V
+5V
WIDTH(Analog signal)
RSS
ECLK
RCLK
BCLK1
FCLK
TURNS
EJTS2
J8-3
-2
-1
J101-3
-2
-1
J2181
2
3
J8-7
-8
-9
3
2
1
Display PCB
DADF controller PCB
When an original is detected, '1'.(When the light-blocking plate isat the sensor.)
While the feeder motor is rotating, alternates '1' and '0'.
While the belt motor is rotating,alternates '1' and '0'.
While the feeder motor is rotating,alternates '1' and '0'.
When an original is detected, '1'.(When the light-blocking plate isat the sensor.)
While the delivery motor is rotating,alternates '1' and '0'.
When the re-circulation bar is seton the top original, '1'.
Detects the width of the originalstacked on the original tray.
Inputs to the DADF Controller PCB (2/2)
Figure 2-104
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 2-5
CHAPTER 2 BASIC OPERATION
D. Outputs to the DADF Controller PCB
Outputs to the DADF Controller PCB (1/1)
Stopper plate solenoid When '0', the solenoid (SL1) turns on.(The stopper plate moves down.)SL1
J2171
2
J5-10
-11
+24V
STPSL
2
1
Paper retaining platesolenoid
When '0', the solenoid (SL2) turns on.(The paper retaining plate moves down.)SL2
J2161
2
J5-12
-13
+24V
WGTSL
2
1
Clutch When '0', the clutch (CL1)turns on.CL
J13-1
-2
+24V
CL
Brake When '0', the brake (BK1)turns on.BK
J6-1
-2
+24V
BK
Pick-up motor See p. 2-43.M1
J12-1
-2
Feeder motor When '0', the feeder motor (M2)turns on.
M2
J11-1
-2
+24V
FMPWM
Belt motor
Delivery motor
See p. 2-45.M3
J7-1
-2
When '0', the delivery motor (M5)turns on.M5
J14-8
-7
+24V
EMPWM
Re-circulation motor
Display PCB
LED101
LED102
When '0', the re-circulation motor (M4)turns on.M4
J8-5
-6
-3
-4
J102-1
-2J101 -5
-6
-3
+5V
RSDRV
When '0', the Original Set indicatorturns on.
+5V
ORGLED
1
2
3
2
J221
J101-4
Paper deflecting platesolenoid
When '0', the solenoid (SL3) turns on.(The paper deflecting plate operates.)SL3
J9-B2
-B1
+24V
FLPSL1
Figure 2-105
CHAPTER 2 BASIC OPERATION
2-6 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
II. BASIC OPERATION
A. OutlineThe machine uses four motors and one clutch to pick up, feed, and deliver originals.The pick-up motor (M1) serves to pick up originals. The feeder motor (M2) serves to reverse
and deliver originals. The belt motor (M3) moves and stops originals to and on the copyboard glass,and delivers them. The delivery motor (M3) operates to deliver originals to the delivery tray.
The clutch (CL) is used to engage or disengage the drive of the feeder motor (M2) and the beltmotor (M3).
DADF control ler PCB
IndicatorPCB
Bel
t mot
or d
rive
sign
alF
eede
r be
lt br
ake
driv
e si
gnal
Bel
t mot
or c
lock
sig
nal
Clu
tch
driv
e si
gnal
Fee
der
mot
or c
lock
sig
nal
Fee
der
mot
or d
rive
sign
al
Rev
ersa
l/fee
der
pape
r de
tect
ion
sign
al
Pape
r def
lect
ing
plat
e so
leno
id d
rive
sign
al
Del
iver
y de
tect
ion
sign
al 1
Pic
k-up
reg
istr
atio
n si
gnal
Pic
k-up
pap
er d
etec
tion
sign
al
Upp
er c
over
ope
n/cl
osed
det
ectio
n si
gnal
2O
rigin
al tr
ay p
aper
sig
nal
Pick
-up
rolle
r hom
e po
sitio
n de
tect
ion
sign
alP
aper
hol
ding
sol
enoi
d dr
ive
sign
alS
topp
er p
late
sol
enoi
d dr
ive
sign
alR
egis
trat
ion
rolle
r cl
ock
sign
alLa
st o
rigin
al d
etec
tion
sign
alO
rigin
al s
et in
dica
tor
ON
sig
nal
Re-
circ
ulat
or m
otor
driv
e si
gnal
Pic
k-up
mot
or d
rive
sign
alD
eliv
ery
mot
or c
lock
sig
nal
Del
iver
y m
otor
driv
e si
gnal
Del
iver
y de
tect
ion
sign
al 2
S9
M2
CL SL3
S6
S7S3
S11
SL1
S4SL2
M1
S14
M4
S13 M5
S12
S5S1
S8
S10
BK M3
Figure 2-201
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 2-7
CHAPTER 2 BASIC OPERATION
B. Operation
The machine enables the following five operations:1. Double-sided original to single-sided copy2. 2 small-size originals to reduced page composition3. Single-sided original to double-sided copy4. Double-sided original to double-sided copy
Using auto duplexing unit.5. Top pick-up mode original feeding
The machine feeds originals in any of the following three ways according to the instructionsfrom the copier:
CHAPTER 2 BASIC OPERATION
2-8 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
1. Double-Sided Original ModeWhen copying the face (1st side) and the back (2nd side) of an original, the machine
automatically reverses the original.
a. Reverse the original Copies the 2nd side. Copies the 1st side. Delivers theoriginal.
Figure 2-202
Pick-Up Operation
Picks up an original for the 1st side.
Reverses the original from the 1st side to the 2nd side.
Scanner Copies the 2nd side.
Reverses the original from the 2nd side to the 1st side.
Copies the 1st side.
Delivers the original.
— — —
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 2-9
CHAPTER 2 BASIC OPERATION
b. Copies the 1st side Copies the 2nd side Reverse the original. Delivers theoriginal.
— — —
Pick-Up Operation
Picks up an original for the 1st side. Reverses the original from the 2nd side to the 1st side.
Scanner Copies the 2nd side.
Reverses the original from the 1st side to the 2nd side.
Copies the 1st side.
Delivers the original.
Figure 2-203
CHAPTER 2 BASIC OPERATION
2-10 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
2. Reduced Page Compositon ModeWhen reducing and copying two originals in page composition mode, the machine
automatically picks up two originals and places them on the copyboard glass side by side. Table 2-201 shows the sizes of originals that may be used in the machine.
Figure 2-204
A/B-configured
A5
B5
A4
Inch-configured
STMT
LTR
Table 2-201
1st original
2nd original
The 1st original is moved back to adjust the sheet-to-sheet distance to the 2nd original. At the same time, the 2nd original is moved and stopped at a specific position.
The difference in speed between the reversing rollerand the feeding belt is eliminated to discharge the two originals at the same time.
At the end of reading the original, the feeding belt isrotated counterclockwise to discharge 1st and 2nd originals.
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 2-11
CHAPTER 2 BASIC OPERATION
3. Top Pick-Up FeedingThe machine picks up the originals on the
original tray from the top (first page of thestack), and places them on the copyboardglass.
Each time an original has been read, themachine moves the original from thecopyboard glass to the original delivery tray.
Figure 2-205
Placement
Pick-up
Reading
Delivery 1
Delivery 2
CHAPTER 2 BASIC OPERATION
2-12 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
C. Detecting Originals
1. OutlineThe machine has the following four types
of document detection:1. Detects the presence/absence of an
original on the original tray.2. Detects the size of originals place on the
original try.3. Detects the number of originals that
have been copied.4. Detects the trailing edge of the last
original.
2. Detecting the Presence/Absenceof an Original
The presence/absence of an original onthe original tray is detected by the original traypaper sensor (PS1).
When an original is set on the originaltray, the light between the original tray papersensor (S1) and the prism is blocked, causingthe original tray paper sensor (S1) to generatethe original detection signal (EMPS).
In response to the original detection signal(EMPS), the DADF controller PCB turns onthe Original Set indicator (LED101,LED102).
DADF controller PCB
Prism
OriginalIndicator
PCB
Orig
inal
Set
indi
cato
r O
Nsi
gnal
Orig
inal
tray
pap
er s
igna
l
LED 101,102
S1
S11
Figure 2-206
Original Set indicator
Original
Original tray
Figure 2-207
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 2-13
CHAPTER 2 BASIC OPERATION
3. Detecting the Size of an Originala. Outline
The machine detects the size of an originalin relation to the vertical (feeding) andhorizontal directions of the original, ensuringcorrect size detection.
b. Detecting in Vertical (feeding) DirectionDetection in vertical direction is made by
the registration paper sensor (S3) and theregistration roller clock sensor (S11).
The registration paper sensor detects theleading and trailing edges of an original, andthe registration roller clock sensor detects therotation of the registration roller while theoriginal moves past the sensor. The rotation ofthe registration roller is converted to thelength of the original.
DADF controller PCB
Registration paper sensor
Registration rollerRegistration roller clock sensor
Pic
k-up
det
ectio
n si
gnal
Reg
istr
atio
n ro
ller
cloc
k si
gnal
Figure 2-208
c. Detection in Horizontal DirectionDetection in horizontal direction is made
by the original width detecting volume (VR)on the original tray. The original widthdetecting volume operates in conjunction withthe side guide. As its resistance varies, thechanges are detected by the DADF controllerPCB, which converts them into a length inhorizontal direction.
Side guides
DADF controller PCB
VR
Figure 2-209
The copier identifies the size of anoriginal in terms of a default size based on theresults of vertical and horizontal lengthscommunicated by the machine.
Table 2-202 shows the default sizes thatare identified:
CHAPTER 2 BASIC OPERATION
2-14 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
d. A Model, A/B Model f. Inch Model and Inch/AB Model
Default
B5R
A5
A4R
FOOLSCAP
B5
B4
COMPUTERpaper
A4
A3
Vertical length
257mm
148.5mm
330mm
330mm
182mm
364mm
381mm
210mm
420mm
Original width
177~187mm
205~215mm
252~262mm
274~284mm
292~302mm
For vertical direction, a deviation of ±10mm is ignored; for horizontal direction, adeviation of ±5 mm is ignored; outside theranges, the original will be identified as beingof a non-default size.
Table 2-202
e. Inch Model
In vertical direction, a deviation of ±10mm is ignored; in horizontal direction, adeviation of ±5 mm is ignored; outside theranges, the original will be identified as beingof a non-default size.
Table 2-203
For original length, a deviation of ±10mm is ignored; for original width, a deviationof ±5 mm is ignored; outside the ranges, theoriginal will be identified as being of a non-default size.
Table 2-204
Originalwidth
211~221mm
274~284m
Default
STMT
LTRR
FOOLSCAP
LGL
LTR
COMPUTERpaper
297mm×432mm(11"×17")
Originallength
140mm
279mm
330mm
356mm
216mm
381mm
432mm
Originalwidth
177~187mm
205~213mm
214~221mm
252~262mm
274~284mm
Default
B5R
A5
A4R
STMT
LTRR
FOOLSCAP
LGL
B5
B4
LTR
COMPUTERpaper
279mm×432mm(11"×17")
A4
A3
Originallength
257mm
148mm
297mm
140mm
279mm
330mm
356mm
182mm
364mm
216mm
381mm
432mm
210mm
420mm
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 2-15
CHAPTER 2 BASIC OPERATION
4. Detecting the Trailing Edge of theLast Original
A copier with a long paper path (from thecassette to the drum) is designed to pick upcopy paper early to speed up copying work.As such, when the machine picks up the lastoriginal and places it on the copyboard glass,the next paper is likely to be kept in wait.
To accommodate this, the machine isdesigned to pick up originals to suit the timingat which its host copier picks up copy paper.
If the length of an original is 220 mm orless, the machine sets the first original on thecopyboard glass, and moves the secondoriginal beyond the registration roller.
Recirculating lever
2nd original
Figure 2-210
If the re-circulating lever is on the originaltray in this condition, the machinecommunicates to the copier that the third andsubsequent originals are present, and thecopier picks up copy paper for the nextcopying run.
When the re-circulating lever has droppedon the original tray, the machinecommunicates to the copier that there is notthird or subsequent originals (RSS signal) sothat the copier will not pick up copy paper.
CHAPTER 2 BASIC OPERATION
2-16 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
D. Picking Up Originals
1. OutlineThe machine uses top pick-up mode (i.e., top separation, in which the topmost sheet of the
stack of originals is picked up first); in other words, the first page will be picked up first. See thefollowing diagram for the construction of the pick-up assembly.
Top pick-up mode
Figure 2-211
When the pick-up motor starts to rotate counterclockwise, the arm on the pick-up roller shafttransmits its drive to the original guide and the switching arm. In response, the original guidemoves downward. On the other hand, the rear and the front of the separation belt operating inconnection with the switching arm move upward to start top pick-up mode.
DADF controller PCB
Original guide
Pick-up motor (M1)
M1
Separation belts Switchingarm Arm
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 2-17
CHAPTER 2 BASIC OPERATION
Figure 2-212 Top Separation Mode
2. Top Pick-Up Mode
a. OperationWhen top pick-up mode is executed with
originals on the original tray, the followingwill take place:1) Pick-Up Separation
The paper stop plate is brought down, andthe paper retaining plate is moved down tothe stack of originals; then, the first pageof the stack is picked up.After pick-up, the original is fed betweenthe separation belt and the feeding rollerto prevent double feeding. (The directionof rotation of the separation belt and thefeeding roller is the opposite of thedirection in bottom pick-up mode.)
2) ArchingThe original is butted against theregistration roller so that it arches.
Separation belt
Pick-up sensor
Feeding rollerPaper stopper plate
Paper retaining plate
1st page of the stack
Figure 2-213
Arching
Registration roller
Figure 2-214
CHAPTER 2 BASIC OPERATION
2-18 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
3) FeedingThe feeding belt, registration roller, andfeeding roller are rotated to move theoriginal to the copyboard glass.
4) Picking Up the 2nd OriginalWhen the original reaches a specificposition on the copyboard glass, thecopier’s scanner starts to move forward.At the same time, the 2nd original ispicked up (if of small size).In the case of a large-size original, the 2ndoriginal is picked up after delivery of thefirst original.
Registration roller
Feeding roller
Feeding belt
Figure 2-215
Edged out by the registration roller.
Scanner
Figure 2-216
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 2-19
CHAPTER 2 BASIC OPERATION
b. Sequence of Operations (A4, 2 originals, top pick-up mode)
Figure 2-217
The pick-up motor rotates in the direction opposite to the direction in copying mode.The feeding belt rotates clockwise.The feeding belt rotates counterclockwise.
CWCCW
Pick-up sensor (S7)
(S3)
(S7)
(M1)
(M2)
(M3)
(CL)
(BK)
(SL2)
(SL1)
Registrationpaper sensor
Delivery sensor 2
Pick-up motor
Feeder motor
Belt motor
Clutch
BrakePaper retainingplate solenoidStopper platesolenoid
Copy Start key ON
1st original picked up, fed Scanner started, 2nd original picked up 2nd original fed Scanner
forward
Low speed
CW CCW CCW CCW
Low speed Low speed
CHAPTER 2 BASIC OPERATION
2-20 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
E. Reversal
1. OperationReversal may be either from the first side
to the second side, or from the second side tothe first side. (Since the same mechanism isinvolved, the discussions herein will be onreversal from the first side to the second side.)
1) Picking Up for the 1st SideAn original is moved from the originaltray to the copyboard glass.
2) Reversal/FeedingThe feeding belt is rotated counterclockwise toreverse/feed the original on the copyboardglass.
3) Reversal/Delivery SwitchingThe paper deflecting solenoid (SL3) isturned on to open the paper deflectingplate so that the original is moved back tothe copyboard glass, reversing theoriginal.When the second side of the original is seton the copyboard glass, the scanner startsto move forward.While the scanner is moving in reverse,the original is reversed once again so thatits first side is set on the copyboard glass.When the 1st side of the original has beencopied, the original is moved for delivery.
Figure 2-218
Picking up for the 1st side.
Figure 2-219
Paper deflectingplate
Reversing from the 1st side to the 2nd side.
Figure 2-220
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 2-21
CHAPTER 2 BASIC OPERATION
2. Sequence of Operations (reversal)
Figure 2-221
CW : The feeding belt rotates CW.CCW : The feeding belt rotates CCW.
Pick-up sensor (S7)
(S3)
(S8)
(S6)
(M1)
(M2)
(M3)
(SL3)
(CL)
(BK)
Registrationpaper sensor
Reversal sensor
Delivery sensor 1
Pick-up motor
Feeding motor
Belt motorPaper deflectingplate solenoid
Clutch
Brake
1st side picked up1st sidecopied 1st side reversed 2nd side
copiedReversed/fed 3rd side
copied
CCW CCW CCWCW CWLow speed Low speed
CHAPTER 2 BASIC OPERATION
2-22 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
F. Reduced Page Composition
1. Top Pick-Up ModeIn top pick-up mode, the originals are
picked up starting with the top sheet, notrequiring reordering of the originals.
1) Picking Up the 1st SideThe 1st original is picked up and stoppedon the copyboard glass. For details ofpick-up operation, see D-2 “Top Pick-UP” on p. 2-17.
2) Positioning the 1st Side Original/Feedingthe 2nd Side OriginalThe 1st original is moved back to adjustthe sheet-to-sheet distance. Further, twooriginals are moved simultaneously andstopped at specific positions.
3) Feeding the 1st Side and 2nd SideOriginals SimultaneouslyThe clutch (CL) is turned on to eliminatethe difference in speed between thedelivery/reversing roller an the feedingbelt, and two originals are fedsimultaneously.
Figure 2-222
2nd original
1st original
Figure 2-223
Figure 2-224
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 2-23
CHAPTER 2 BASIC OPERATION
4) Delivering the 1st and 2nd OriginalsWhen the original has been read, thefeeding belt is rotated counterclockwise,and the 1st and 2nd originals aredelivered.If there are 3rd and 4th originals, pick-upis started.
2. Sequence of Operations (reduced page composition; top pick-up)
Figure 2-226
Figure 2-225
The pick-up motor rotates in the direction opposite of copying mode.The feeding belt rotates clockwise.The feeding belt rotates counterclockwise.
CWCCW
Pick-up sensor (S7)
(S3)
(M1)
(M2)
(M3)
(CL)
(BK)
(SL2)
(M5)
Registrationpaper sensor
Delivery sensor 2
Pick-up motor
Feeder motor
Belt motor
Clutch
BrakePaper retainingsolenoid
Delivery motor
Copy Start key ON
1st original picked up/fed 2nd original picked up/fed Scanner started Delivered
Low speed
Low speed
CW CWCCW CCW CCW CCW
Low speed
Low speed Low speed
CHAPTER 2 BASIC OPERATION
2-24 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
G. Delivery
1. OutlineThe machine discharges originals to the original dilivery tray.
Figure 2-227Top Pick-up mode
Original delivery tray
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 2-25
CHAPTER 2 BASIC OPERATION
2. Top Pick-Up Mode Deliverya. Operation
The machine delivers the original on the copyboard tray as follows:
2) Delivering the 1st Original/Picking Upthe 2nd OriginalThe clutch (CL) is turned on to eliminatethe difference in speed between thedelivery/reversing roller and the feedingbelt; the 1st original is moved for delivery,and the 2nd original is picked up.
Figure 2-228
Figure 2-229
1st original
2nd original 1st original
1) Feeding the 1st OriginalThe feeding belt is rotatedcounterclockwise to feed the 1st originalabout 30 mm (to maintain the sheet-to-sheet distance from the 2nd original).
Figure 2-230
Original delivery tray
3) Delivery to the Original Delivery TrayWhile the trailing edge of the original ismoved to the original delivery tray, thedelivery motor (M5) switches to lowspeed to deliver the original slowly.
CHAPTER 2 BASIC OPERATION
2-26 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
b. Sequence of Operations (small size, pick-up/delivery)
Figure 2-231
(S7)
(S3)
(M1)
(M2)
(M3)
(CL)
(BK)
(SL2)
(M5)
Scanner started/2nd original picked up
2nd originalmoved
Scanner started/3rd original pick-up
3rd original moved/1st original delivered
The pick-up motor rotates in the position opposite of copying mode.The feeding belt rotates clockwise.The feeding belt rotates counterclockwise.
CWCWW
Pick-up sensorRegistrationpaper sensor
Delivery sensor 2
Pick-up motor
Feeder motor
Belt motor
Clutch
BrakePaper retainingsolenoid
Delivery motor
Low speed
CCW CCW
Low speed
CCW CCW
Low speed Low speed
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 2-27
CHAPTER 2 BASIC OPERATION
H. Controlling the Pick-Up Motor
1. OutlineFigure 2-267 is a block diagram of the pick-up motor.The feeder motor is a DC motor. The microprocessor (Q1) on the DADF controller PCB sends
to the drive circuit the pick-up motor drive signal (SMON), pick-up motor rotation direction signal(SDIR), and pick-up motor rotation speed control signal (SMPWM).
In response, the drive circuit drives the pick-up motor according to these three signals.The control circuit is not equipped with a circuit used to provide the microprocessor (Q1) with
feed back, indicating the state of pick-up rotation. As such, the pick-up motor rotation speed controlsignal (SMPWM) remains constant at all times, and no correction is made when the rotation speedof the pick-up motor fluctuates because of an external force.
Figure 2-232
Pick-up motor
DADF controller PCB
Drivecircuit
J12-1
M1J12-2
Q1CPU
SMON
SDIR
SMPWM
CHAPTER 2 BASIC OPERATION
2-28 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
2. Relationship Between the Pick-UP Motor Drive Signal (SMON), Pick-Up MotorRotation Direction Signal (SDIR), and Pick-Up Motor Rotation Speed ControlSignal (SMPWM) and the Operation of the Pick-Up Roller
Table 2-205
Belt motor drivesignal (SMON)
"1"
"1"
"1"
"1"
"0"
Belt motorrotation direction
signal(SDIR)
"1"
"1"
"0"
"0"
"1" / "0"
Belt motor rotationspeed control signal
(SMPWM)
Pulses
"0"
Pulses
"0"
"1" / "0"
Pick-up roller operation
The pick-up roller rotates in copiermode pick-up direction(counterclockwise).
The pick-upper roll rotates byinertia in copier mode pick-updirection.
The pick-up roll rotates in faxmode pick-up direction(clockwise).
The pick-upper roller rotates byinertia in fax mode pick-up direction(clockwise).c
The pick-up roller stops.
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 2-29
CHAPTER 2 BASIC OPERATION
I. Controlling the Belt Motor
1. OutlineFigure 2-268 is an outline diagram of the belt motor control circuit.The belt motor is a DC motor.The microprocessor (Q1) on the DADF controller PCB sends the belt motor drive signal
(BMON), belt motor rotation direction signal (BDIR), and belt motor rotation speed control signal(BMPWM) to the drive circuit.
When the belt motor starts to rotate, the belt motor clock sensor (S10) sends the belt motorclock signal (BCLK1) to the microprocessor (Q1). In response, the microprocessor (Q1) comparesthe belt motor clock signal (BCLK1) against the rotation speed stored in memory to vary the beltmotor rotation speed control signal (PMPWM) to make a match, causing the belt motor (M3) torotate at a specific speed at all times.
Figure 2-233
Belt motorclock sensor
DADF controller PCB
Belt motor
Drivecircuit
J7-1
J7-2
J9-B4
S10
M3
Q1CPU
BMON
BDIR
BMPWM
BCLK1
CHAPTER 2 BASIC OPERATION
2-30 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
2. Relationship Between the Belt Motor Drive Signal (BMON), Belt Motor RotationDirection Signal (BDIR), and Belt Motor Rotation Speed Control Signal(BMPWM) and the Feeding Belt
Table 2-206
3. Protecting the Belt Motor from OvercurrentAt times, overcurrent can occur because of a specific type of original or state of the machine.
To protect the power supply circuit from extra loads occurring because of continuing overcurrentwhile the belt is rotating in pick-up direction, an overcurrent control circuit is provided.
Belt motor drivesignal (BMON)
"1"
"1"
"1"
"1"
"0"
Belt motorrotation direction
signal(BDIR)
"1"
"1"
"0"
"0"
"1" / "0"
Belt motor rotationspeed control signal
(BMPWM)
Pulses
"0"
Pulses
"0"
"1" / "0"
Feeding Belt
The feeding belt rotates in pick-updirection (counterclockwise).
The feeding belt rotates by inertialin pick-up direction(counterclockwise).
The feeding belt rotates in copiermode delivery direction(clockwise).
The feeding belt rotates by inertial incopier mode deliverydirection(clockwise).
The feeding belt stops.
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 2-31
CHAPTER 2 BASIC OPERATION
J. Detecting Original Jams
MS1 MS2
M4
S14
S4
S1
S7S3
S8S12
S6
Figure 2-234
The timing at which the machine checks for jams is stored in memory in the microprocessor onthe DADF controller PCB, and a jam is detected in terms of the presence/absence of paper at aspecific sensor at the time.
When a jam is detected, the machine communicates the fact to the copier in the form of a code.(Some copiers show such codes in service mode.)
Jam type
Original retraction
Pick-up delay
Registration delay
Sensor type
S1,S7 01H
02H
03HS3,S7
S7
Description Code
Pick-up
The sensor S7 does not detect the leading edge of an original1500 msec after the pick-up motor (M1) has turned on and, inaddition, the sensor S1 does not detect an original.
The sensor S7 does not detect the leading edge of an original1500 msec after the pick-up motor (M1) has turned on.
The sensor S3 does not detect the leading edge of an original350 msec after the sensor S7 has detected the leading edge ofan original.
Table 2-207a
S1 Original tray papersensor
S3 Registration papersensor
S4 Upper cover sensorS6 Delivery sensor 1S7 Pick-up sensorS8 Reversal sensor
S12 Delivery sensor 2S14 Re-circulation sensorMS1 DADF switchMS2 Upper cover switch
CHAPTER 2 BASIC OPERATION
2-32 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Jam type Sensor type
S3
S3
S8
S8
S8
S8
S3
S3
S6
S6
MS2S4
S1
S6,S3S8,S7
S8
S14
MS1
06H
08H
11H
12H
13H
20H
21H
23H
41H
42H
81H
82H
83H
84H
88H
89H
Description Code
Pick-up
Rev-ersal
Deli-very
Double feeding
Original leadingedge retreat
Reversal delay 1
Reversal stationary
Reversal delay 2
Reversal pick-updelay
Reversal pick-upstationary
Delivery delay
Delivery stationary
DADF open
Upper cover open
Jam original
Re-circulating leveridle rotation(2nd circulation orlater)Residual original
Double feeding
Reversal initialpaper
The sensor S3 remains on even when the 1st original isplaced on the copyboard.
At the start of original pick-up, the sensor S3 does notdetect the leading edge of an original.
At time of original reversal, the sensor S8 is on.
At time of original reversal or delivery, the sensor S8 does notdetect the trailing edge of an original after a reversal delay check.
At time of original reversal, the sensor S3 does not detect the leading edge of the original that has been reversed 100 mm or 300 msec after the sensor S8 has detected an original.
The sensor S3 does not detect the trailing edge of an original 'original size + 180 mm' after the sensor S8 has turned on.
At time of original delivery, the sensor S6 does not detect an original 100 mm or 250 msec after the sensor S8 has detectedthe leading edge of an original.
The sensor S6 does not detect the trailing edge of an original100 mm or 250 msec after a reversal stationary check.
The DADF is opened while in operation.
The upper cover is opened while the DADF is in operation.
The sensor S1 does not detect the original delivered on theoriginal tray.
At the start of original pick-up, the sensor S6, S3, or S8(also S7 if the paper stopper plate is up) is on.
When picking up the 1st original, an original is detectedon the copyboard glass.
For the 2nd circulation or later, the re-circulating leverrotates idly without coming into contact with an original.
At time of original delivery pick-up, the sensor S8 does notdetect the preceding original 50 mm after the belt motor hasstarted to rotate counterclockwise. (The original to be deliveredis moved back to the copyboard glass together with the originalpicked up).
At time of original reversal or delivery, the sensor S8 does notdetect the leading edge of an original 140 mm or 225 msecafter the belt motor (M3) has started to rotate clockwise.
Table 2-207b
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 2-33
CHAPTER 2 BASIC OPERATION
Table 2-207c
Deli-very
Delivery failure
DADF open
Upper cover open
Re-circulatinglever idle rotation
S3,S6
MS1
MS2,S4
S13
At time of delivery in bottom separation pick-up mode,the original fails to stop (e.g., the original that has beenpicked up is longer than the original being delivered).
While the copier is at reset because of, for example, theabsence of paper, the DADF is opened.
While the copier is at reset because of, for example, theabsence of paper, the upper cover is opened.
At time of original pick-up, the re-circulating lever fell offa stack of original.
Jam type Sensor type
84H
91H
92H
93H
Description Code
Caution:1. Result of Detection
The DADF will stop operation immediately upon detection of a jam shown in Table 2-209.2. Resetting
For a pick-up delay jam, the machine may be reset by removing the original from theoriginal tray. For other types of jams, remove the originals from the original tray, remove thejam from the DADF, and open the DADF.
Reference:As a rule, detection of a condition for the first original is treated as “improperly placedoriginal”; jams are identified starting with the detection of a condition for the second andsubsequent originals.
CHAPTER 2 BASIC OPERATION
2-34 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
K. Improper Placement of Originals
Figure 2-235
An improperly placed original can cause a jam or damage to the original. The machine makesa check to ensure that all originals are placed properly to prevent jams or damage. The timing of acheck is stored in the microprocessor on the DADF controller, and detection is made in terms of thepresence/absence of paper over a specific sensor.
When the machine detects an improperly placed original, it communicates the fact to its hostcopier. (Some copiers show such codes in service mode.)
Paper stopper plate
S4
S1
S7S3
S14
M4
Re-circulating lever
S1 Original tray paper sensorS3 Registration paper sensorS7 Pick-up sensorS14Re-circulation sensor
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 2-35
CHAPTER 2 BASIC OPERATION
Fault Sensor Description DADF operation Code
Re-circulating lever idlerotation
S11
S7
S7
S3
S3
S14
S3
S3
01H
03H
05H
11H
12H
13H
14H
15H
Immediately after the re-circulation motor M4starts to operate, the re-circulating lever rotatesidly without coming into contact with an original.
Stops operationimmediately upondetection.
Stops operationmmediately upondetection.
Pick-up failure
Paper stopper plateoverriding
Count mismatch
Original count
Original extraction
Wrong original size
Wrong original size orsize mix in reducedpage composition mode
The sensor S7 does not detect the leadingedge of an original 1500 msec after thestart of pick-up.
At time of placement of originals, theoriginals ride over the paper stopper plate.
The number of originals placed on theoriginal tray after jam removal is as follows;see Note:
The re-circulating lever does not fall underthe original tray, not enabling detection ofthe last original.
The re-circulating lever fell under the originaltray while an original is being processed.
The size of the original that is picked upis of a non-default size.
Original copied Original placed on tray
Stops operationimmediately upondetection.
ReferenceNormally, the original tray can hold asmany as 50 sheets of A5, STMT, A4,B5, or LTR or 25 sheets of A3, B4,279x432mm (11"x17"), or LGL.
Stops operationafter counting 100sheets.
Stops operationimmediately upondetection.Stops operationimmediately upondetection.Stops detection immediately upon detection.
The separation belt, feeding roller, and pick-up roller stopoperation immediately. The original moving in advance is delivered after the end of copying; then, the DADF stops operation.
1. The original that is picked up is of a type not supported by reduced page composition mode.
2. The original that is picked up is of a size different from the size of the first original.
Table 2-208
CHAPTER 2 BASIC OPERATION
2-36 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
When a jam occurs, the host copier remembers how many originals have been copied. Thecount is sent to the DADF after jam removal, and the DADF circulates the originals that have beencopied; it then places originals that have not been copied on the copyboard for copying. This is whynormal copying would not be possible if a different number of originals are placed on the originaltray after jam removal.
In the above chart, error 1 will be treated as a condition in which a different number of originalsare placed after jam removal; in such a case, both the DADF and the copier stop operation toindicate an error. The operation continues, however, for error 2.
1. ResettingTo reset, remove all originals from the original tray, and then place the originals once again.
Some copiers indicate an appropriate message. Be sure to follow such a message when placing theoriginals.
In reduced page composition mode, on the other hand, remove the originals from the originaltray, and open the DADF once.
As many as10 originalsare placed on theoriginal tray.
The 8th originaljams.
The 3rd originaljams.
Error 2
Error 1
NormalThe 7 originals thathave been copied arecounted, and copying isresumed with the 8th original.
Put the 10 originals as they were initially, andplace them on the original tray.
As many as 3 originalsare placed on theoriginal tray.
The originals are counted,and then the DADF isstopped.
(As many as 2 originals have been copied.)
(As many as 7 originals have been copied.)
As many as 8 originalsare placed on theoriginal tray.
10 (originals) - 2 (copied) = 8 originals
10 (originals) - 7 (copied) = 3 originals
The originals are counted,and then copying is resumedwith the 2nd.
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 2-37
CHAPTER 2 BASIC OPERATION
III. POWER SUPPLY
A. OutlineFigure 2-301 is an outline diagram of the machine’s power supply system.The machine’s power supply is provide by its host copier with 24 V (24 VP, 24 VL).24 VP is mainly used for loads, and is cut off when the machine is opened or its upper cover is
opened. The circuit breaker (CB1) operates to cut off the power to protect the circuit in response toovercurrent.
24 VL is converted by the regulator into 5 V, and is used by the logic system and sensors.The fuse resistance (R26) melts in response to overcurrent in the circuit, thereby cutting off the
power and protecting the circuit.
Figure 2-301
RF switch(MS1)
J2-3
CO
M
J2-4
N
O
J3-1
CO
M
J3-2
N
O
Upper cover switch (MS2)
Circuit breaker(CB1)
Fuse resistance(R26)
Copier
24VL
24VP
J1-6 5V
J2-1
RegulatorIC (Q14)
Logic
DADF controller PCB
Solenoid(SL1 through SL4)
Clutch (CL)
Motor (M1, M2, M3, M4)
Brake (BK)
Sensor (S1 through S14)
Original width detectingvolume (VR)
Re-circulation motor (M4)
Indicator LED(LED101, LED102)
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 3
MECHANICAL SYSTEM
I. BASIC CONSTRUCTION ............3-1A. External Covers ..........................3-1B. Switches .....................................3-3C. Adjusting the DADF Height ........3-5
II. DRIVE SYSTEM ..........................3-6A. Removing the Pick-Up
Motor Unit ...................................3-6B. Removing the Feeder
Motor Unit ...................................3-6C. Belt Motor ...................................3-7D. Removing the Clutch Unit ..........3-9E. Delivery Motor ......................... 3-10
III. FEEDING SYSTEM .................. 3-11A. Pick-Up Roller ......................... 3-11B. Removing the Separation
Belt Unit ................................... 3-12C. Feeding Roller Unit.................. 3-12D. Registration Roller ................... 3-14E. Delivery/Reversing Roller ........ 3-16F. Delivery Roller Unit
(bottom pick-up mode) ........... 3-20
G. Delivery Roller Unit(top pick-up mode) .................. 3-21
H. Reversing Guide ...................... 3-22I. Stopper Plate Solenoid ........... 3-24J. Positioning the Paper Retaining
Plate Solenoid (SL2) ............... 3-25K. Positioning the Paper Deflecting
Solenoid (SL3) ........................ 3-26L. Stamp Solenoid ....................... 3-26M. Feeding Belt ............................ 3-28
IV. CLEANING ................................ 3-31A. Belt Assembly .......................... 3-31B. Sensors ................................... 3-31C. Separation Guide .................... 3-34
V. FEEDING .................................. 3-35A. Pick-Up Drive Assembly .......... 3-35B. Right Delivery Drive
Assembly ................................. 3-35
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 3-1
CHAPTER 3 MECHANICAL SYSTEM
I. BASIC CONSTRUCTION
A. External Covers
[2][1] [3]
[4][1] Upper cover[2] Original tray[3] Body cover[4] Front cover
Figure 3-101
Remove the covers as shown whencleaning, inspecting, and repairing the insideof the machine.
1. Removing the DADF1) Turn on off the copier.2) Disconnect the communication cable of
the DADF from the copier.3) Open the DADF fully.
Figure 3-102
4) Go to the rear of the copier, and lift theDADF upright to remove.
Figure 3-103
Reference:The feet of the hinges of the machine areequipped with a locking mechanismdesigned to prevent slippage. Whendetaching the machine from the copier,you must fully open it to disengage itslocks.When removing the DADF from thecopier, be sure to hold it as shown inFigure 1-103 , not supporting it by thedelivery assembly to prevent faultydelivery.
CHAPTER 3 MECHANICAL SYSTEM
3-2 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
2. Removing the Body Cover1) Remove the seven mounting screws[1],
and detach the body cover.
[1][1]
Figure 3-104
[1][1] [1]
Figure 3-105
[1]
[1]
Figure 3-106
2) Remove the two mounting screws [2], anddetach the original tray.
Caution:The original tray is connected by meansof a cable. Take extra care not to damagethe cable during work.
[3]
[2]
Figure 3-107
3) While avoiding the original tray, detachthe body cover and the front cover.
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 3-3
CHAPTER 3 MECHANICAL SYSTEM
3. Side Guide LockThe side guide of the machine is equipped
with a side guide lock so that it will not openfarther than 297 mm (A/A3).
If an original longer in width than 297 mmis used, the side guide lock must be removed(300 mm max.).
1) Loosen the screw [1], and remove the sideguide lock [2].
StopperScrew
Plate
Figure 3-108
Caution:When making copies, be sure to adjust theside guide to the size of the original.If the side guide is improperly positioned,the original will tend to move askew.
B. Switches
The machine is equipped with twomicroswitches (DADF switch MS1 and uppercover open/closed switch MS2) so that themachine will not operate when it or its uppercover is open.
1. Adjusting the DADF Switch (MS1)1) Remove the body cover.2) Open and close the DADF, and adjust the
retaining plate [2] so that the DADFswitch (MS1) [1] turns on and off whilethe distance from the copyboard glass tothe DADF end is between 10 and 100 mm.
[1]
[2]
Figure 3-109
Copier
DADF
10~100mm
Figure 3-110
CHAPTER 3 MECHANICAL SYSTEM
3-4 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
2. Upper Cover Switch (MS2)1) Check to make sure that both upper cover
switches (front, rear) are on when theupper cover is closed.
3. Mounting the Original WidthDetecting Volume
1) Loosen the two screws [2], and detach theside guide [1].
[2][1]
Figure 3-111
2) Open the side guide at the rear [3] and thefront [4] fully.
[4]
[3]
Figure 3-112
3) Mount the gear [5].
[5]
Figure 3-113
4) Turn the original width detecting volume[6] fully in the direction of the arrow;then, turn it in the opposite direction(equivalent of half a tooth) so that it is asindicated in the figure.
[6]
Half a tooth
Figure 3-114
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 3-5
CHAPTER 3 MECHANICAL SYSTEM
5) Keeping the original width detectingvolume [6] as in step 4), mount it to theoriginal tray [7], and fix it in position withscrews [8]; then, connect the connector[9].
[6]
[8][7]
[9]
Figure 3-115
6) Mount the side guide lock removed instep 1, and execute adjustments of theoriginal width detecting volume. (Foradjustments, see p. 5-18.)
C. Adjusting the DADF Height
1) Remove the copier’s rear side plate.Loosen the locking nut [1], and turn theheight adjusting screw [2] so that the left/right rear foot is 0.2 ±0.1 mm from thehorizontal size plate of the copyboardglass.
[1]
[2]
Figure 3-116
2) After making adjustments, check to makesure that the left and right front rubber feetare in contact with the copyboard glass.
CHAPTER 3 MECHANICAL SYSTEM
3-6 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
II. DRIVE SYSTEMA. Removing the Pick-Up
Motor Unit
1) Remove the body cover.2) Remove the tie-wrap as necessary.3) Disconnect the connector J12 [2] from the
DADF controller PBC [1].
Figure 3-201
4) Remove the screw [3], and remove thecable guide [4].
[3][4]
Figure 3-202
5) Disconnect the connector [5] of the uppercover sensor S4.
6) Remove the two mounting screws [6], anddetach the pick-up motor unit [7].
[6][6] [5]
[7]
Figure 3-203
B. Removing the FeederMotor Unit
1) Remove the pick-up motor unit.2) Remove the tie-wrap as necessary.3) Disconnect the connector J11 [2] from the
DADF controller PCB [1].
[1] [2]
Figure 3-204
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 3-7
CHAPTER 3 MECHANICAL SYSTEM
4) Remove the two screws [4], anddisconnect the connector [3] of the feedermotor clock sensor S9.
[3]
[4] [4]
Figure 3-205
5) Detach the two drive belts [5], and detachthe feeder motor unit [6].
[5]
[6]
Figure 3-206
C. Belt Motor
1. Removing the Belt Motor1) Remove the DADF from the copier.2) Remove the feeder motor unit.3) Remove the tie-wrap as necessary.4) Disconnect the connectors J6 [1], J7 [3],
and J13 [3] of the DADF controller PCB.
[3] [1] [2]
Figure 3-207
5) Disconnect the connector [4] of the beltmotor clock sensor (S10).
[4]
Figure 3-208
CHAPTER 3 MECHANICAL SYSTEM
3-8 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
6) Mark the position of the belt motor count[5] on the DADF with a scriber, andremove the three screws [6].
[6]
[5]
Figure 3-209
7) Detach the feeding belt drive roller side[8] of the timing belt [7], and detach thebelt motor unit [5].
[5]
[7] [8]
Figure 3-210
2. Making Adjustments
1) Secure the belt motor unit [2] in placewith three screws so that the displacementis 3 ±1 mm when the timing belt is pushedunder a force of 3 ±1 mm.
[1] [3]
[2]
50mm (approx.)
200 20g+
31m
m+
The spring gauge must be capable of measuring 600 g or so(CK-0058).
Figure 3-211
2) Pull the belt tensioner [4] with a force of500 ± 50 g, and secure it in place with thescrew [5].
[4] [5]
500 20g+
The spring must be capable of measuring 600 g or so(CK-0058).
Figure 3-212
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 3-9
CHAPTER 3 MECHANICAL SYSTEM
D. Removing the Clutch Unit
1) Remove the belt unit [1].2) Detach the drive belt [2].
[1]
[2]
Figure 3-213
3) Remove the E-ring [3].4) Displace the bush [4], and remove the
clutch unit [5].
[4]
[3]
[5]
Figure 3-214
Caution:When mounting the clutch unit, be surethat the slip stop [6] of the clutch engageswith the stopper [7] of the mount.
[6] [7]
figure 3-215
CHAPTER 3 MECHANICAL SYSTEM
3-10 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
E. Delivery Motor
1) Remove the body cover.2) Disconnect the three connectors [1].
Figure 3-216
3) Remove the two screws [2], and free thecable [4] from the cable retainer [3]; then,detach the delivery monitor unit [5].
[5]
[3]
[2] [4] [2]
Figure 3-217
4) Disconnect the connector [6], and removethe two screws [7]; then, detach thedelivery motor [8].
[7]
[8]
[6]
Figure 3-218
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 3-11
CHAPTER 3 MECHANICAL SYSTEM
III. FEEDING SYSTEM
A. Pick-Up Roller
1) Remove the body cover.2) Remove the two screws [1], and detach
the original tray mount [2].
[1] [2] [1]
Figure 3-301
3) Remove the screw [3], and detach thepaper retaining solenoid [4].
[4]
[3]
Figure 3-302
4) Remove the two screws [5], and detachthe original inlet guide plate [6].
[5]
[6] [5]
Figure 3-303
5) Rotate the pick-up roller [7] so that it is asshown in the figure; then, remove thescrew [8], and detach the pick-up roller.
[8]
[7]
Figure 3-304
CHAPTER 3 MECHANICAL SYSTEM
3-12 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
B. Removing the SeparationBelt Unit
1) Remove the body cover.2) Detach the reversing roller drive belt [1].
[1]
Figure 3-305
3) Remove the two screws [2], and detachthe separation belt unit [3] together withthe fixing plate [4].
[3] [2] [4] [2]
Figure 3-306
C. Feeding Roller Unit
1) Remove the body cover.2) Remove the original tray mount.3) Remove the original inlet guide plate.4) Remove the separation belt unit.5) Remove the four screws [5], and detach
the separation guide plate [6].
[5] [6] [5]
Figure 3-307
6) Remove the two screws [8], and detachthe inside guide plate [7].
[8] [7] [8]
Figure 3-308
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 3-13
CHAPTER 3 MECHANICAL SYSTEM
7) Remove the screw [9], and detach thestopper [10].
[9] [10]
Figure 3-309
8) Remove the E-ring [11], and detach theidler gear [12].
9) Remove the E-ring [13], and detach thegear [14] and the timing belt [15]. (Takecare not to drop the pin.)
[12]
[14] [13]
[11] [15]
Figure 3-310
10) Remove the E-ring [16], and shift the arm[17] and the gear [18] in the direction ofthe arrow.
[16] [17] [18]
Figure 3-311
11) Remove the E-ring [19], and shift the bush[20] in the direction of the arrow; then,remove the feeding roller unit [21].
[21] [19] [20]
Figure 3-312
CHAPTER 3 MECHANICAL SYSTEM
3-14 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
D. Registration Roller
1) Remove the DADF from the copier.2) Remove the body cover.3) Remove the feeding roller unit.4) Remove the pick-up motor unit.5) Remove the four screws [2], and detach
the right hinge unit [1].
[2]
[2] [1] [2]
Figure 3-313
6) Remove the E-ring [3], and detach thebush [4].
[4] [3]
Figure 3-314
7) Remove the screw [5], and detach thesolenoid mount [6].
[5]
[6]
Figure 3-315
8) Remove the spring [7] and the screw [8];then, detach the arm [9].
[7] [9] [8]
Figure 3-316
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 3-15
CHAPTER 3 MECHANICAL SYSTEM
9) Remove the E-ring [10] and the bush [11];then, detach the link arm shaft [12].
[10] [11] [12]
Figure 3-317
10) Remove the two screws [13], and removethe sensor mount [14].
[14]
[13]
Figure 3-318
11) Remove the E-ring [15], tension spring[16], bush [17], and two screws [18].
[16] [17][18][15]
[18]
Figure 3-319
12) Remove the grip ring [19], clock plate[20], sensor mount [21], and spring [22].
[22]
[21]
[20][19]
Figure 3-320
CHAPTER 3 MECHANICAL SYSTEM
3-16 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
13) Remove the grip ring [23], tension spring[24], bush [25], and two screws [26]; then,detach the registration roller [27].
[25] [26] [24] [23]
[27][26]
Figure 3-321
E. Delivery/Reversing Roller
1) Remove the DADF from the copier.2) Remove the body cover.3) Remove the registration roller.4) Remove the two E-rings [1], gear [2],
timing belt [3], and bush [4]. (Take carenot to drop the pin.)
[3] [1] [2] [1] [4]
Figure 3-322
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 3-17
CHAPTER 3 MECHANICAL SYSTEM
5) Remove the gear [5]. (Take care not todrop the pin.)
[5]
Figure 3-323
Reference:Remove the gear while unlocking it.
Figure 3-323-a
6) Remove the grip ring [6], and remove thebush [7].
[7]
[6]
Figure 3-324
7) Remove the spring [8] and the screw [9];then, detach the lower guide stopper [10].
[10] [9] [8]
Figure 3-325
CHAPTER 3 MECHANICAL SYSTEM
3-18 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
8) Remove the spring [11].
[11]
Figure 3-326
9) Remove the screw [13], and detach thesensor cover; then, disconnect the sensorconnector [14], and remove theregistration sensor [15] by lifting it.
[13]
[12]
Figure 3-327
[14]
[15]
Figure 3-328
10) Remove the paper guide [16].
[16]
Figure 3-329
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 3-19
CHAPTER 3 MECHANICAL SYSTEM
11) Remove the two screws [17] at the frontand the two screws [18] at the rear; then,detach the reversing plate [19] to thebottom.
[17]
Figure 3-330 (front)
[19]
[18]
Figure 3-331 (rear)
12) Remove the four screws [20], and removethe front plate [21].
[21]
[20]
Figure 3-332
13) Remove the delivery/reversing roller [22].
[22]
Figure 3-333
CHAPTER 3 MECHANICAL SYSTEM
3-20 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
F. Delivery Roller Unit(bottom pick-up mode)
1) Remove the body cover.2) Remove the pick-up motor .3) Remove the screw [1].
[1] [2] [1]
Figure 3-334
4) Remove the E-ring [2].
[2]
Figure 3-335
5) Remove the screw [3], and remove thefixing pin [4]; then, detach the deliveryroller unit [5].
[6]
[5]
[5]
Figure 3-336
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 3-21
CHAPTER 3 MECHANICAL SYSTEM
G. Delivery Roller Unit (toppick-up mode)
1) Remove the body cover.2) Remove the screw [1] and the spring [2];
then, disconnect the connector [3].
[1]
Figure 3-337a
[2]
[3]
Figure 3-337b
3) Remove the two screws [4], and detachthe timing belt [5] and the motor unit [6].
[4]
[5]
[6] [4]
Figure 3-338
CHAPTER 3 MECHANICAL SYSTEM
3-22 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
4) Remove the screw at the front and the twoscrews [8] at the rear; then, detach thedelivery roller unit [9].
[8]
[8]
[7]
[9]
back
figure 3-339
H. Reversing Guide
1) Remove the body cover.2) Remove the gear [1] and the timing belt
[2].
[1]
[2]
Figure 3l-340
Reference:Remove the gear while unlocking it.
Figure 3-341
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 3-23
CHAPTER 3 MECHANICAL SYSTEM
3) Disengage the front side [3] and the rearside [4] of the reversing guide spring.
[3]
Figure 3-342
[4]
Figure 3-343
4) Remove the screw [5], and detach thesolenoid unit [6].
[6] [5]
Figure 3-344
5) Remove the reversing sensor jack [7], andthe grounding cord [8].
[8]
[7]
Figure 3-345
CHAPTER 3 MECHANICAL SYSTEM
3-24 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
6) Remove the screw [9], screw [11], andfixing pin [12]; then, detach the reversingguide [13].
Caution:When mounting the fixing pin, be surethat its position is as it was initially.
[13] [12] [11] [10] [9]
Figure 3-346
I. Stopper Plate Solenoid
1. Removing the Stopper PlateSolenoid
1) Remove the body cover.2) Remove the two screws [1], and remove
the original tray mounting plate [2].
[1] [2] [1]
Figure 3-347
3) Remove the two screws, and disconnectthe connector [4]; then, remove thestopper plate solenoid [5].
[3]
[5] [4]
Figure 3-348
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 3-25
CHAPTER 3 MECHANICAL SYSTEM
2. Making Adjustments1) Secure the solenoid [1] in place where the
stopper [3] (rubber block) butts againstthe rear edge of the stopper plate [2] whenthe plunger of the solenoid [1] is at the endof its stroke.
[1][2][3]
Figure 3-349
J. Positioning the PaperRetaining Plate Solenoid(SL2)
1) Prepare test strips.Cut a sheet of A4 or LTR paper (64 g/m2)into widths of about 70 mm each.
70 mm (approx.)
Vertical
1/3
1/3
1/3
Figure 3-350
2) Remove the front cover and the cover.3) Shift bits [5] and [6] of the DIP switch
(DSW1) on the DADF controller to ON,and press the push switch.• The pick-up roller starts to rotate and will
stop at the top pick-up mode pick-upposition.
4) When the pick-up roller has stopped,press the push switch (SW3) on theDADF controller once again.• The motor will stop operation.
5) Secure the paper retaining solenoid inplace so that the delivery roller [2] (pick-up roll for top pick-up mode) is in firmcontact with the pick-up roll [3] when theplunger [1] of the paper retaining solenoidis fully pushed.
[2]
[3]
[1]
Figure 3-351
CHAPTER 3 MECHANICAL SYSTEM
3-26 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
6) Push in s test strip prepared in step [1]between the delivery roller and the pick-up roller while pushing the plunger of thepaper retaining solenoid fully. Check tomake sure that the delivery roller rotateswhen the rear and the front pick-up rolleris tested this way.
Test sheet
Figure 3-352
Reference:When pulling the test strip, the one-wayclutch will operate to hold the deliveryroller from rotating.
7) If the delivery roll does not rotate when atest strip is pushed in, go back to step 3).
8) Shift the bits of the DIP switch (DSW1)on the DADF controller PCB back toinitial configuration.
K. Positioning the PaperDeflecting Solenoid (SL3)
1) Remove the body cover.2) Loosen the fixing screw [1], and tighten it
when the stroke of the solenoid [2] is 4.5mm.
[1]
[2]
4.5mm
Figure 3-353
L. Stamp Solenoid
1) Remove the delivery roller unit (top pick-up mode).
2) Remove the screw [1] and spring [2];then, detach the flapper plate [3].
[3] [1]
[2]
Figure 3-354
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 3-27
CHAPTER 3 MECHANICAL SYSTEM
3) Remove the E-ring [4] and the bush [5].
[5] [4]
Figure 3-355
4) Remove the two E-rings [6], gear [7], andbush [8]; the, detach the delivery roller [9].(Take care not to drop the pin.)
[6][7]
[6]
[8]
[9]
Figure 3-356
5) Remove the two screws [10] at the frontand the two screws [11] at the rear; then,remove the paper guide plate [12].
[11]
[12]
[10]
Figure 3-357
6) Remove the sensor flag [13], anddisconnect the connector [14].
[13] [14]
Figure 3-358
CHAPTER 3 MECHANICAL SYSTEM
3-28 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
7) Remove the three screws [15], and detachthe delivery roll mount [16].
[15]
[16]
Figure 3-359
8) Remove the delivery roll [17], and detachthe stamp solenoid mount [18].
[18][17]
Figure 3-360
9) Disengage the two claws [20] of the stampsolenoid mount [18]; then, detach thestamp solenoid [19].
[18] [20]
[19]
Figure 3-361
M. Feeding Belt
1) Remove the body cover.2) Remove the spring [1] at the front.
[1]
Figure 3-262
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 3-29
CHAPTER 3 MECHANICAL SYSTEM
3) Free the spring [2] from the hook [3] at therear, and engage it on the hook [4]designed to keep the spring temporarily.
[2] [4] [3]
Figure 3-363
4) Remove the two screws [5], and detachthe solenoid [6]. (Take care not to drop thepin in the solenoid arm.)
[5][6]
Figure 3-364
5) Remove the four screws [8], and detachthe side plate [7].
[8] [7] [8]
Figure 3-365
6) Remove the three screws [9], and detachthe delivery unit linking plate [10].
[9] [10] [9]
Figure 3-366
CHAPTER 3 MECHANICAL SYSTEM
3-30 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
7) Pull off the feeding belt [11] to the front.
[11]
Figure 3-367
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 3-31
CHAPTER 3 MECHANICAL SYSTEM
IV. CLEANING
A. Belt Assembly
1) Move the feeding belt in the direction ofthe arrow to dry wipe.
Figure 3-401
2) Place a sheet of copy paper whose centeris moistened with alcohol on the originaltray; then, shift bit 6 of the DIP switch(SW1) on the DADF controller PCB toON.
Moisten with alcohol
Figure 3-402
3) Press the push switch(SW3) to executecleaning of the separation belt.
4) When cleaning has ended, press the pushswitch (SW3), and shift all bits of the DIPswitch to OFF.
5) Mount the DADF controller cover.
B. Sensors
The machine’s feeding path is equippedwith two transmission type sensors (originalsensor S1, registration sensor S3) and threephotointerrupers (pick-up sensor S7, deliverysensor S6, reversal sensor S8).
The light-receiving face of a transmissiontype sensor tends to collect more paper lintthan a photointerrupter, possibly leading tomalfunction. The sensors may be cleaned asfollows:
[1] [2] [1]
Figure 3-403
CHAPTER 3 MECHANICAL SYSTEM
3-32 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
2) Clean the sensor S1 [3] shown in thefollowing figure.
[3]
Figure 3-404
2. Reflecting Face (original sensor)1) Clean the reflecting face [2] of the original
sensor while keeping the delivery roller[1] down.
[1]
[2]
Figure 3-405
3. Registration Sensor (S3)1) Remove the separation belt unit.2) Remove the four screws [2], and detach
the separation guide plate [1].
[2][1] [2]
Figure 3-406
3) Remove the two screws [4], and detachthe inside guide plate.
[4] [3] [4]
Figure 3-407
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 3-33
CHAPTER 3 MECHANICAL SYSTEM
4) Clean the registration sneers S3 [4]mounted on the inside the plate [3].
[3] [4]
Figure 3-408
4. Registration Sensor LED31) Remove the screw [3], and detach the
registration sensor LED3 cover [2] of thereversing roller unit [1].
[1]
[3]
[2]
Figure 3-409
2) Clean the light-emitting face of theregistration sensor LED3 [4].
[4]
Figure 3-410
CHAPTER 3 MECHANICAL SYSTEM
3-34 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
C. Separation Guide
1) Remove the separation belt unit. (See theinstructions given for the separation beltunit.)
2) Remove the front separation flapper andthe front separation flapper. (See theinstructions given for the separationflapper.)
3) Clean the areas (12 in all) of the pre-separation guide with alcohol.• Be sure to keep the strokes in the
direction of feeding.
Figure 3-411
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 3-35
CHAPTER 3 MECHANICAL SYSTEM
V. FEEDING
The machine does not have parts requiringperiodical lubrication. Apply lubricant if youhave replaced gears or the like.
Caution:When applying lubricant, take care thatthe timing belt and the cable is not soiledwith lubricant. Otherwise, be sure to wipethe part clean.
A. Pick-Up Drive Assembly
Apply lubricant to the following parts.
1. Rear
Pick-up motor unit
Apply here
(*CK-0551-020)
Figure 3-501
*Tool No
2. Front
Apply here
(*CK-0551-020)
Figure 3-502
B. Right Delivery Drive Assembly
Apply here
(CK-0551-020)
Figure 3-503
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 4
MAINTENANCE AND SERVICING
I. PERIODICALLY REPLACEDPARTS ..........................................4-1
II. CONSUMABLES ANDDURABLES..................................4-1
III. SCHEDULED SERVICINGCHART .........................................4-2
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 4-1
CHAPTER 4 MAINTENANCE AND SERVICING
I. PERIODICALLY REPLACED PARTS
The machine does not have parts that require periodical replacement.
II. CONSUMABLES AND DURABLES
Some parts of the machine may have to be replaced once or more because of wear or damageover the period of warranty. Replace them as necessary.
Table 4-201
Note:The values in the table are estimates only, and are subject to change based on future data.
As of Dec. 1998
No.
1
2
3
4
Parts name
Feeding belt
Pick-up roller
Feeding belt(for top pick-up mode)
Separation roller(for top pick-up mode)
Parts No.
FC1-7815-000
FF5-5191-000
FB3-5702-000
FF5-5207-000
Q’ty
1
2
4
1
Life (copies)
200,000
500,000
25,000
500,000
Remarks
Replace if dirt cannotbe removed.
CHAPTER 4 MAINTENANCE AND SERVICING
4-2 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
III. SCHEDULED SERVICING CHART
Caution:Do not use solvents or oils other than those indicated herein.
Or 6 months, whichever is earlier.
12345678910111213
Delivery/reversing rollerRegistration rollerRegistration paper sensor (S3)Separation belt (pick-up assembly)Feeding roller (pick-up assembly)Original tray paper sensor (S1)Delivery roller (for top separation mode)Pick-up roller (pick-up assembly)Feeding beltCopyboard glass retainer (right)Copyboard glassPre-separation guideVertical size plate
Intervals (copies)every
100,000every
200,000RemarksParts nameRef.
: Inspect: Clean : Replace : Lubricate : Adjust
Replace if dirt cannot be removed
Table 4-301
Figure 4-301
[1] [2] [3] [4] [5] [6] [8] [9] [7]
[10][11][12][13]
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 5
TROUBLESHOOTING
I. STANDARDS ANDADJUSTMENTS ..........................5-1
A. Mechanical System ....................5-1B. Electrical System..................... 5-11
II. TROUBLESHOOTING .............. 5-15A. Troubleshooting Malfunctions.. 5-15
III. ARRANGEMENT OF THE ELEC-TRICAL PARTS ........................ 5-20
A. Motors, Solenoids, andSensors ................................... 5-20
B. PCB ......................................... 5-22
IV. VARIABLE RESISTORS, LIGHT-EMITTING DIODES, AND CHECKPINS BY PCB ........................... 5-23
A. DADF Controller PCB.............. 5-23B. Indicator PCB .......................... 5-25C. DIP Switch Functions .............. 5-26
V. SELF DIAGNOSIS .................... 5-28A. DADF Self Diagnosis............... 5-28
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 5-1
CHAPTER 5 TROUBLESHOOTING
I. STANDARDS ANDADJUSTMENTS
A. Mechanical System
1 Adjusting the DADF Height
1) Remove the copier's rear cover.Turn the bolt of the left/right support sothat the distance a between the two rubberfeet at the rear and the horizontal sizeplate on the copyboard glass is 0.2±0.1mm (about two sheets of copy paper of 64g/m2) when the DADF is closed, i.e., thefeet at the front are in contact with thecopyboard glass.After adjustment, tighten the nuts to lockthem.
DADF
Rubber foot(front)
Support
Copier'srear cover
Rubber foot(rear)
Horizontalsize plate
NutBolt Copyboard glass
Copier
a
a=0.2+0.1mm
Figure 5-101
2) After adjustment, check to make sure thatboth left and right rubber feet at the frontof the DADF are in contact with thecopyboard glass. Otherwise, adjust theheight of the magnet at the front.
2 Adjusting the Original StopPosition
Adjust the original stop position after"adjusting the DADF height"; then, perform"correcting the skew," "adjusting the distanceto the horizontal size plate," and "adjusting theoriginal leading edge stop position."
a. Correcting the Skew1) Remove the screw, and detach the DADF
controller cover.
DADF controller cover
Screw
Figure 5-102
2) Shift bit 1 of the DIP switch (DSW1) onthe DADF controller PCB to ON.
ON
12
34
56
78
LED
1LE
D2
SW1
TP1
J10
J15
J1
CB1 J2 J14
J12
J11
J7
J6
J13
J5
J9
J8J3
6 1B12 B1
2 1
1
3
1
2
1
3
12
13
1
14
2
A1 A12
1 1 1 1 9101 4 22
8
1
7
1
DSW1
SW2
SW3
Figure 5-103
3) Place an A3 or 279.4×431.8-mm(11"×17") sheet of copy paper (64 g/m2)on the original tray.
CHAPTER 5 TROUBLESHOOTING
5-2 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
4) Press the push switch (SW3) on the DADFcontroller PCB once.• The copy paper will be picked up and
stopped on the copyboard glass.
SW1
TP1
J10
J15
J1
CB1 J2 J14
J12
J11
J7
J6
J13
J5
J9
J8J3
B12 B1
2 1
1
3
1
2
1
3
12
13
1
14
2
A1 A12
1 1 1 1 9101 4 22
8
1
7
1
DSW1
SW2
SW3
Figure 5-104
5) Open the DADF slowly, and check tomake sure that the difference between
1
and 2 shown in the figure is within 1 mm.
21
1
1
2
150mm
Horizontal size plate
Copy paper
Standard: - = 0 ± 1 mm
* may be anywhere on the copy paper.
1 -
2 = 0 ± 1 mm
Figure 5-105
6) If the difference is not as indicated, loosenthe nut at the rear of the right hinge unit,and turn the adjusting screw to makeadjustments.
Adjusting screw
Figure 5-106
Right support
Adjusting screw
Nut
Hinge unit (right)
A
Figure 5-107
• Relationship between the AdjustingScrew and 1/ 2
Relationship
1<
2
1>
2
Direction of turn
Clockwise
Counterclockwise
Table 5-101
7) After adjustment, tighten the nut to lockthe adjusting screw in place.
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 5-3
CHAPTER 5 TROUBLESHOOTING
b. Adjusting the Distance to theHorizontal Size PlateBe sure to perform "removing the skew"before adjusting the distance to thehorizontal size plate.
1) Shift bit 1 of the DIP switch (DSW1) onthe DADF controller PCB to ON.
ON
12
34
56
78
LED
1LE
D2
SW1
TP1
J10
J15
J1
CB1 J2 J14
J12
J11
J7
J6
J13
J5
J9
J8J3
6 1B12 B1
2 1
1
3
1
2
1
3
12
13
1
14
2
A1 A12
1 1 1 1 9101 4 22
8
1
7
1
DSW1
SW2
SW3
Figure 5-108
2) Place an A3 or 279.4×432.8-×mm(11"×17") sheet of copy paper (64 g/m2)on the copyboard tray.
3) Press the push switch (SW3) on theDADF controller PCB once.• The copy paper will be picked up and
stopper on the copyboard glass.
SW1
TP1
J10
J15
J1
CB1 J2 J14
J12
J11
J7
J6
J13
J5
J9
J8J3
B12 B1
2 1
1
3
1
2
1
3
12
13
1
14
2
A1 A12
1 1 1 1 9101 4 22
8
1
7
1
DSW1
SW2
SW3
Figure 5-109
4) Open the DADF slowly, and check tomake sure that the distance
3 shown in the
figure is as indicated.
Horizontal size plate
A4 copy paper
= 2.3 ±1 mm3
Figure 5-110
Horizontal size plate
LTR copy paper
= 11.1 ±1 mm3
Figure 5-111
5) If not as indicated, loosen the positioningscrew and the fixing screws of the DADForiginal tray, and adjust the position of theDADF original tray.
Caution:When making a test copy, be sure totighten the two fixing screws and thepositioning screw (2 pc.). Otherwise, theoriginal can jam.
CHAPTER 5 TROUBLESHOOTING
5-4 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Original trayB A
Fixing screwFixing screw
Positioning screw
Figure 5-112
• Relationship between the DADFOriginal Tray and 3
Direction of shift
1
2
3
Decreases
Increases
Table 5-102
6) After adjustment, check to make sure thatthe positioning screw and the fixingscrews are fully tightened.
c. Adjusting the Original Leading EdgeStop PositionBe sure to perform "correcting the
original skew" and "adjusting the distance tothe horizontal size plate" before adjusting theoriginal leading edge position.
1. Top Pick-Up Mode1) Shift bits 1, 4, and 5 of the DIP switch
(DSW1) on the DADF controller PCB toON.
ON
12
34
56
78
LED
1LE
D2
SW1
TP1
J10
J15
J1
CB1 J2 J14
J12
J11
J7
J6
J13
J5
J9
J8J3
6 1B12 B1
2 1
1
3
1
2
1
3
12
13
1
14
2
A1 A12
1 1 1 1 9101 4 22
8
1
7
1
DSW1
SW2
SW3
Figure 5-113
2) Place an A3 or 279.4x432.8-mm(11"x17") sheet of copy paper (64 g/m2)on the original tray.
3) Press the push switch (SW3) on theDADF controller PCB once.• The copy paper will be picked up and
stopped on the copyboard glass.
SW1
TP1
J10
J15
J1
CB1 J2 J14
J12
J11
J7
J6
J13
J5
J9
J8J3
B12 B1
2 1
1
3
1
2
1
3
12
13
1
14
2
A1 A12
1 1 1 1 9101 4 22
8
1
7
1
DSW1
SW2
SW3
Figure 5-114
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 5-5
CHAPTER 5 TROUBLESHOOTING
4) Open the DADF slowly, and measure thecopy paper stop position
4; then, close
the DADF.
Standard: = 11.0 ±1 mm
Copyboard glass
Copy paper
4
4
Figure 5-115
5) To adjust the original leading edge stopposition, use the push switches (SW1 andSW2) on the DADF controller PCB.Each press on the push switch will shiftthe original stop position by 0.34 mm.When the correct position is attained,press the push switch (SW3) once. Thecopy paper will be discharged and thenew setting will be stored.
SW1
TP1
J10
J15
J1
CB1 J2 J14
J12
J11
J7
J6
J13
J5
J9
J8J3
B12 B1
2 1
1
3
1
2
1
3
12
13
1
14
2
A1 A12
1 1 1 1 9101 4 22
8
1
7
1
DSW1
SW2
SW3
Figure 5-116
• Push Switch and Shift
Direction of shift
Rear
Front
Push switch
SW1
SW2
Table 5-103
Note:Holding down the push switch will notcause more than a single shift.
DADF
Leading edge Trailing edge
Copy paper
Copyboard glass
Figure 5-117<EX.>Suppose that the copy paper stop position
L4 is 10 mm from the edge of the copyboardglass when the push switch (SW3) on theDADF control PCB has been pushed once tostop the copy paper on the copyboard glassand the DADF has been opened.
Close the DADF slowly withoutremoving the copy paper,
To shift the copy paper stop positiontoward the rear by 1.6 mm,
1.6 mm/0.34 (adjustment pitch) = 4.70the push switch (SW1) should be pressed
five times.Press the push switch (SW1) five times,
and press the push switch (SW3) on theDADF controller PCB once so that the copypaper will be discharged and the new settingwill be stored in memory.
CHAPTER 5 TROUBLESHOOTING
5-6 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
3 Adjusting the Sheet-to-SheetDistance for Reduced PageComposition Mode
Be sure to perform "adjusting the DADFheight" and "adjusting the original stopposition" before adjusting the sheet-to-sheetdistance for reduced page composition mode.
a. Top Pick-Up Mode
3) Press the push switch (SW3) on theDADF controller PCB one.• The copy paper will be picked up and
stopped on the copyboard glass.4) Open the DADF slowly, and measure the
distance 5 between the two sheets of copy
paper. Then, close the DADF.
SW1
TP1
J10
J15
J1
CB1 J2 J14
J12
J11
J7
J6
J13
J5
J9
J8J3
B12 B1
2 1
1
3
1
2
1
3
12
13
1
14
2
A1 A12
1 1 1 1 9101 4 22
8
1
7
1
DSW1
SW2
SW3
Figure 5-119
5) Use the push switches SW1 and SW2 onthe DADF controller PCB to adjust thesheet-to-sheet distance.
5
5
Copyboard glass
Copy paper
[2]
Copy paper
[1]
Standard: = 0 ±3 mm
Figure 5-120
Originals size (in feeding length)
220 to 250 mm
220 to 260 mm
DADF model
A/B
Inch
Table 5-104
1) Shift bits 1, 2, and 4 of the DIP switch(DSW1) on the DADF controller PCB toON.
2) Place two sheets of A4 or LTR copy paper(64 g/m2) on the original tray.Be sure that the copy paper matches theDADF model: if A/B-configuration, useA4 copy paper; if Inch-configuration, useLTR cop paper.
ON
12
34
56
78
LED
1LE
D2
SW1
TP1
J10
J15
J1
CB1 J2 J14
J12
J11
J7
J6
J13
J5
J9
J8J3
6 1
B12 B1
2 1
1
3
1
2
1
3
12
13
1
14
2
A1 A12
1 1 1 1 9101 4 22
8
1
7
1
DSW1
SW2
SW3
Figure 5-118
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 5-7
CHAPTER 5 TROUBLESHOOTING
A single press on each push switch willshift the copy paper [2]of Figure 5-128 by0.34 mm. When the position is as desired,press the push switch SW3 once todischarge the copy paper and store thenew setting.
<EX.>
• Relationship between Push Switchesand Sheet-to-Sheet Distance
Suppose that the distance between the twosheets of copy paper is 4 mm when thepush switch SW3 on the DADF controllerPCB is pressed once to stop the copy paperon the copyboard and the DADF isopened.To decrease the sheet-to-sheet distance by4 mm,4/0.34 (adjustment pitch) = 12.12the push switch SW2 must be pressed 12times.When the push switch SW2 is pressed 12times and the push switch SW3 on theDADF controller PCB is pressed once, thecopy paper will be discharged and the newsetting will be stored.
6) After "correcting the original skew,""adjusting the horizontal size plate,""adjusting the original leading edge stopposition," and "adjusting the reducedcomposition mode sheet-to-sheetdistance," turn off the copier and shift allbits of the DIP switch DSW1 to OFF.Turn on the copier, and check to make surethat the operation of the DADF is normal.
However, if the size of the original(length in feeding direction) is as follows,keep bit 7 of the DIP switch DSW1 to ON.
Original size(length in feeding
direction)
220 to 250 mm
220 to 260 mm
DADF model
A/B configuration
Inch-configuration
Sheet-to-sheet distance 5
Increases
Decreases
Push switch
SW1
SW2
Table 5-105
Table 5-106
CHAPTER 5 TROUBLESHOOTING
5-8 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
4 Adjusting the DADF Open/Closed Switch (MS1)
1) Remove the body cover (upper).2) Adjust the retaining plate so that the
DADF switch MS1 turns on and off whenthe distance from the copyboard glass tothe end of the DADF is 10 to 100 mm(open and close the DADF).
[1]
[2]
Figure 5-121 Right Hinge
DADF
Copier
10~100mm
Figure 5-122
5 Adjusting the Separation BeltPressure
a. OutlineIf originals start to move skew because of
wear on the separation belt or the feedingroller, the pressure of the separation belt willhave to be adjusted.
If the separation belt or the feeding rollermust be replaced, be sure to make thefollowing adjustments:
b. Before the Work
Adjusting screwSeparation roller
Separation belt
Spring gauge
Separation belt pressureFeeding roller
Test strip for measuringfeeding power
Feeding power
Figure 5-123
1) Prepare test strips for measuring feedingpower.Cut an A4 or LTR sheet of copy paper (64or 80 g/m2) into strips of about 70 mm;then, paste tape on both sides of the end ofeach, and put a hole.
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 5-9
CHAPTER 5 TROUBLESHOOTING
70 mm(approx.)
70 mm(approx.)
1/3
1/3
1/3
Vertical direction
Copy paper (A4)
10 cm (approx.)
Put tape on both sides.
Hole
20 mm (approx.)
35 mm
300 mm (approx.)
Figure 5-124
c. Top Pick-Up Mode1) Remove the screw, and detach the DADF
controller cover of the DADF.
DADF controller coverScrew
Figure 5-125
2) Shift bits 5 and 6 of the DIP switch DSW1on the DADF controller PCB to ON toselect separation belt/feeding rollercleaning mode (top pick-up).
ON
12
34
56
78
LED
1LE
D2
SW1
TP1
J10
J15
J1
CB1 J2 J14
J12
J11
J7
J6
J13
J5
J9
J8J3
6 1B12 B1
2 1
1
3
1
2
1
3
12
13
1
14
2
A1 A12
1 1 1 1 9101 4 22
8
1
7
1
DSW1
SW2
SW3
Figure 5-126
3) Press the push switch SW3 on the DADFcontroller PCB. Put the test strip into themiddle separation assembly, and measurethe feeding power (Figure 5-141).
Points to Note When TakingMeasurements1. Be sure that the three separation beltsare in contact with the test strip.2. Be sure that the test strip is pulledstraight along the separation belt (Figure5-131).3. Be sure that measurements are takenwhen the rear end of the test strip and therear end of the original tray are flush(Figure 5-141).
CHAPTER 5 TROUBLESHOOTING
5-10 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Spring gauge(capable of measuring about 600 g; CK-0058)
Upper cover
Center
Test strip Spring gauge
Match the end of thetest strip and the endof the original tray.
Figure 5-126Measuring the Feeding Power (middle)
4) Open the upper cover of the DADF to endmeasurement.
5) Press the push switch SW3 on the DADFcontroller PCB once (at the front, glued inplace).
[1]
[2]
Glued in place
Figure 5-128
Table 5-107
Feeding power (g)
300±30
330±30
Test strip
64 g/m2
80 g/m2
Feeding power (g)
Decreases
Increases
Direction ofrotation
Clockwise
Counterclockwise
Table 5-108 Adjusting Screw and Feeding Power
6) Be sure that LED1 and LED2 on theDADF controller PCB are on and thevoltage or TP1-1 is 1.1±0.1 V and thevoltage of TP1-2 is 4.1± 0.2 V.If the voltage of either TP1-1 or TP1-2 isnot as indicated, suspect displacement ofthe light-emitting/-receiving unit of thesensor corresponding to the test probe;check the position of the sensor.
ON
12
34
56
78
LED
1LE
D2
SW1
TP1
J10
J15
J1
CB1 J2 J14
J12
J11
J7
J6
J13
J5
J9
J8J3
6 1B12 B1
2 1
1
3
1
2
1
3
12
13
1
14
2
A1 A12
1 1 1 1 9101 4 22
8
1
7
1
DSW1
SW2
SW3
Figure 5-129
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 5-11
CHAPTER 5 TROUBLESHOOTING
B. Electrical System
1. Replacement of Major Parts
Major parts
DADF controller PCB
Original tray power sensor (S1)
Registration sensor (S3)
Original width detecting volume (VR)
Description
1. Adjust the level of the original tray paper sensor(S1)/registration sensor (S3).
2. Adjust the original width detecting volume (VR).3. Adjust the original stop position. (See A.
"Mechanical.")4. Adjust the sheet-to-sheet distance in reduced page
composition mode. (See A. "Mechanical.")5. Initial setting for paper setting
1. Adjust the level of the original tray paper sensor(S1/registration sensor (S3)
1. Adjust the level of the original tray power sensor(S1)/registration sensor (S3).
1. Adjusting the original width detecting volume (VR)
Table 5-109
2. Adjusting the Level of theOariginal Tray Paper Sensor (S1)/Registration Sensor (S3)
S1S3
Figure 5-130
1) Remove the cover of the DADF, and shiftbit 4 of the DIP switch DSW1 on theDADF controller PCB.
ON
12
34
56
78
LED
1LE
D2
SW1
TP1
J10
J15
J1
CB1 J2 J14
J12
J11
J7
J6
J13
J5
J9
J8J3
6 1B12 B1
2 1
1
3
1
2
1
3
12
13
1
14
2
A1 A12
1 1 1 1 9101 4 22
8
1
7
1
DSW1
SW2
SW3
Figure 5-131
CHAPTER 5 TROUBLESHOOTING
5-12 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
2) Push the push switch SW3 on the DADFcontroller PCB without placing anyoriginal on the original tray.• LED1/2 on the DADF controller PCB
turns on.• If LED1 does not turn on in 30 sec or
more, suspect the original tray papersensor (S1); if LED2 does not turn onin 30 sec or more, suspect theregistration sensor S3 or the DADFcontroller.
SW1
TP1
J10
J15
J1
CB1 J2 J14
J12
J11
J7
J6
J13
J5
J9
J8J3
B126 1
B1
2 1
1
3
1
2
1
3
12
13
1
14
2
A1 A12
1 1 1 1 9101 4 22
8
1
7
1
DSW1
SW2
SW3
LED
1LE
D2
Figure 5-132
3) When LED1/2 has turned on, press thepush switch SW3 on the DADF controllerPCB once again.• The two LEDs will turn off, and the
adjustment will end.4) Shift the bit on the DIP switch DSW1 on
the DADF controller PCB back toposition.
3. Adjusting the Original WidthDetecting Volume (VR1)
1) Obtain one sheet of A4 or LTR copypaper.
2) Remove the cover of the DADF, and setthe bits of the DIP switch DSW1 on theDADF controller PCB as follows:(Keep in mind that settings differaccording to the size of copy paper.)
ON
12
34
56
78
LED
1LE
D2
SW1
TP1
J10
J15
J1
CB1 J2 J14
J12
J11
J7
J6
J13
J5
J9
J8J3
6 1
B12 B1
2 1
1
3
1
2
1
3
12
13
1
14
2
A1 A12
1 1 1 1 9101 4 22
8
1
7
1
DSW1
SW2
SW3
ON
12
34
56
78
LED
1LE
D2
SW1
TP1
J10
J15
J1
CB1 J2 J14
J12
J11
J7
J6
J13
J5
J9
J8J3
6 1
B12 B1
2 1
1
3
1
2
1
3
12
13
1
14
2
A1 A12
1 1 1 1 9101 4 22
8
1
7
1
DSW1
SW2
SW3
A4
LTR
Figure 5-133
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 5-13
CHAPTER 5 TROUBLESHOOTING
3) Place the copy paper in A4/LTRorientation, and adjust the side guides tothe width of the copy paper.
Figure 5-134
4) Press the push switch SW3 on the DADFcontroller PCB.• When the DADF controller reads data,
LED1 will turn on and then turn offimmediately; thereafter, LED2 will turnon.
SW1
TP1
J10
J15
J1
CB1 J2 J14
J12
J11
J7
J6
J13
J5
J9
J8J3
B12 B1
2 1
1
3
1
2
1
3
12
13
1
14
2
A1 A12
1 1 1 1 9101 4 22
8
1
7
1
DSW1
SW2
SW3
Figure 5-135
5) After LED2 has turned on, place the copypaper on the document tray in a differentorientation (A4R/LTRR), and adjust theside guides to the width of the copy paper.
Figure 5-136
6) Press the push switch SW3 on the DADFcontroller PCB.• When adjustment ends successfully,
LED1 and LED2 on the DADFcontroller PCB will turn on.
• When adjustment ends in failure, LED1and LED2 will flash.
SW1
TP1
J10
J15
J1
CB1 J2 J14
J12
J11
J7
J6
J13
J5
J9
J8J3
B126 1
B1
2 1
1
3
1
2
1
3
12
13
1
14
2
A1 A12
1 1 1 1 9101 4 22
8
1
7
1
DSW1
SW2
SW3
LED
1LE
D2
Figure 5-137
7) Shift the bits of the DIP switch DSW1 onthe DADF controller PCB back to theirinitial position.
CHAPTER 5 TROUBLESHOOTING
5-14 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Figure 5-138
4. Initial setting for paper pick up1) Remove the cover of the DADF, and set
bit 4 and 5 of the DIP switch DSW1 on theDADF controller PCB to ON.
2) Press the push switch SW3 on the DADFcontroller PCB once.
3) Press the push switch SW2 on the DADFcontroller PCB 5 times after the pick upassembley will move.
4) Press the push switch SW3 on the DADFcontroller PCB once again.
5) Return the DIP switch DSW1 on theDADF controller PCB back to its originalposition.
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 5-15
CHAPTER 5 TROUBLESHOOTING
Pick-up roller sensor (S5)
Parts Step Checks Yes/No Action
Set the meter range to 20 VDC, and connect the + probe to J5-1and the - probe to J5-2 on the DADF controller PCB. Then, turn the flag (light-blocking plate) on the pick-up roller shaft by hand.Is the voltage about 5 V whenthe flag is at the sensor andabout 0.15 V otherwise.
1 No
Check the wiring fromthe pick-up motor (M1)to the DADF controllerPCB; if normal, replacethe pick-up motor (M1).
Replace the DADF controller PCB.
Set the meter range to 200 VDC,and connect the +probeto J12-1 and the - probeto J12-2 on the controller PCB.Does the reading change to 22 Vwhen the Copy Start key ispressed?
Pick-up motor(M1)
2 Yes
No
II. TROUBLESHOOTING
A. Troubleshooting Malfunctions
1. E401
Parts Step Checks Yes/No Action
1 No
2 Yes
No
Belt motor clocksensor (S10)
Set the meter range to 20 VDC,and connect the + probe to J9-B4and the - probe to J-B3 on theDADF controller PCB. Does thereading repeat 5 and 0 V when theclock disk is turned slowly byhand?
Check the wiring from thebelt motor clock sensor(S10) to the DADf controllerPCB; if normal, replace thebelt motor clock sensor(S10).
Belt motor (M3) Set the meter range to 200 VDC,and connect the + probe to J7-1and the - probe to J7-2 on thecontroller PCB. Does the readingchange to 23 V when the CopyStart key is pressed?
Check the wiring from thebelt motor (M3) to theDADF controller PCB; ifnormal, replace the beltmotor (M3).
Replace the DADFcontroller PCB.
Table 5-201
2. E402
Table 5-202
CHAPTER 5 TROUBLESHOOTING
5-16 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
3. E403
Table 5-203
4. E404
Parts Step Checks Yes/No Action
1 No
2 Yes
No
Deliver motorclock sensor(S13)
Set the meter range to 20 VDC,and the - probe to J14-1 on theDADF controller PCB. Doesthe reading repeat 5 and 0 Vwhen the clock disk is turnedslowly by hand?
Check the wiring fromthe delivery motor clocksensor (S9) to the DADFcontroller PCB; ifnormal,replace thedelivery motor clocksensor (S13).
Delivery motor(M5)
Set the meter range to 200 VDC, and connect the + probe toJ14-8 and the - probe to J14-7on the DADF controller PCB.Does the reading change to 23V when the Copy Start key ispressed?
Check the wiring fromthe delivery motor (M5)to the DADF controllerPCB; if normal, replacethe delivery motor M5.
Replace the DADFcontroller PCB.
Parts Step Checks Yes/No Action
1 No
2 Yes
No
Feeding motorclock sensor (S9)
Set the meter range to 20 VDC,and connect the + probe to J9-A11and the - probe to J9-A10 on theDADF controller PCB. Does thereading repeat 5 and 0 V when theclock disk is turned slowly by hand?
Check the wiring from thefeeding motor clock sensor(S9) to the DADF controllerPCB; if normal, replace thefeeding motor clock sensor (S9).
Feeding motor (M2) Set the meter range to 200 VDC,and connect the + probe to J11-1and the - probe to J11-2 on theDADF controller PCB. Does thereading of the meter change to 23 Vwhen the Copy Start key is pressed?
Check the wiring from thefeeding motor (M2) to theDADF controller PCB; ifnormal, replace the feedermotor (M2).
Replace the DADFcontroller PCB.
Table 5-204
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 5-17
CHAPTER 5 TROUBLESHOOTING
5. E411
Parts Step Checks Yes/No Action
1
2
No3
4
5
Yes
No
Yes
Original traypaper sensor(S1)Registrationsensor(S3)
Original traypaper sensor(S1)Registrationsensor(light-receiving)(LED3)
Adjust the levels of the original tray paper sensor and the registration sensor. Is the problem corrected?
Adjust the levels of every sensors.
Yes Clean the light-receivingside of the sensor witha cotton wad.
Check the wiring; ifnormal, replace the original tray paper sensor (S1) or the registration sensor light-receiving side (LED3)
Measure the voltage between the connectors J5-7 and J5-9 on the DADF controller PCB(original paper sensor) andbetween the connectors J9-B10and J9-B9 (registration sensorlight-receiving side).Is it about0.6 to 1.1 V?
Is the light-receiving section ofeach sensor soiled with paperlint?
Original traypaper sensor(S1)
Measure the voltage between the connectors J5-8 and J5-9 on the DADF controller PCB. Is it 1.5 V or less in the presence of paper and 4.0V ormore in the absence of paper?
Replace the original traypaper sensor (S1).
Replace the DADF controller PCB.
Registrationsensor
Measure the voltage betweenthe connectors J9-B12 andJ9-B11 on the DADF controllerPCB. Is it 4.5 V or more in thepresence of paper and 1.3 V orless in the absence of paper?
No Replace the DAF controller PCB.
Yes Replace the resistrationsensor (S3).
Table 5-205
CHAPTER 5 TROUBLESHOOTING
5-18 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Parts
Wiring
DADFcontroller PCB
Step
1
2
3
Action
End. (Check the wiringbetween the copier's DCcontroller PCB and theDADF controller PCB.)
Check the wiring for powerfrom the copier.
End.
Replace the copier's DCcontroller PCB.
Checks
Turn off and then on thepower switch. Is theproblem corrected?
Set the meter range to 200VDC, and connect themeter probes as indicated.Is the voltage about 24 V?
Replace the DADFcontroller PCB. Is theproblem corrected?
Yes/No
YES
NO
YES
NO
6. E712
Table 5-206
Figure 5-402
3) Turn on the copier's power switch.4) With no original on the original tray, press the push switch SW3 on the DADF controller PCB
once.5) Check to make sure that LED1/LED2 on the DADF controller PCB turn on, and the voltage of
TP2-1/TP2-2 is 1.1±0.1 V.
+ probe
J2-1
J1-6
1
2
- probe
J2-2
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 5-19
CHAPTER 5 TROUBLESHOOTING
CHAPTER 5 TROUBLESHOOTING
5-20 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
III. ARRANGEMENT OF THE ELECTRICAL PARTS
A. Motors, Solenoids, and Sensors
LED101 LED102
S10
S14
S1
S6
S5
S13
S7S8
S3
MS2
M5
M1 M2
M3
M4BK
CLVR
SL2
SL1SL3
MS1
S11
S12
S9
S4
Figure 5-301
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 5-21
CHAPTER 5 TROUBLESHOOTING
Table 5-301
VR
BK
M
SL
CL
Symbol Name Notation
M1M2M3M4M5
CL
BK
SL1SL2SL3
VR
MS1MS2
S1S3
S4S5S6S7S8S9
S10S11S12S13S14
LED101LED102
Description
Motor
Clutch
Brake
Solenoid
Variable resistor
Microswitch
Phototransistor
Photointerrupter
LED
Pick-up motorFeeder motorBelt motorRe-circulating motorDelivery motor
Clutch
Belt motor brake
Stopper plate solenoidPaper retaining plate solenoidPaper delivery plate solenoid
Original width detecting volume
DADF open/close switchUpper cover switch
Original tray paper sensorRegistration sensor
Upper cover sensorPick-up roller sensorDelivery sensor 1Pick-up sensorReversal sensorFeeding motor clock sensorBelt motor clock sensorRegistration roller clock sensorDelivery sensor 2Delivery motor clock sensorRe-circulation sensor
Original set indicator
CHAPTER 5 TROUBLESHOOTING
5-22 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
B. PCB
[1]
[2]
Table 5-302
Symbol Name Notation Description
DADF controller PCBIndicator PCB
Controls the DADF.Indicates the presence of anoriginal.
[1][2]
Table 5-302
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 5-23
CHAPTER 5 TROUBLESHOOTING
IV. VARIABLE RESISTORS, LIGHT-EMITTING DIODES,AND CHECK PINS BY PCB
Of all variable resistors (VR), light-emitting diodes, and check pins, those needed whenservicing the machine in the field are discussed.
Caution:Do not touch the variable resistors and check pins not discussed herein. They are for thefactory, and require special tools and must be adjusted to high accuracy.
A. DADF Controller PCB
Caution:1. Some LEDs emit dim light even when off because of leakage current. This is a normalcondition, and must be kept in mind:2. VRs that may be used in the field
VRs that must not be used in the field
SW1
TP1
J10
J15
J1
CB1 J2 J14
J12
J11
J7
J6
J13
J5
J9
J8J3
B12 B1
26 1
1
1
3
1
2
1
3
12
13
1
14
2
A1 A12
1 1 1 1 9101 4 22
8
1
7
1
DSW1
SW2
SW3
LED
1LE
D2
Figure 5-401
LED Description
LED1
LED2
Use it when checkingthe output of the original tray paper sensor.
Use it when checkingthe output of the registration sensor.
Table 5-401LEDs on the DADF Controller PCB
CHAPTER 5 TROUBLESHOOTING
5-24 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
TP1-1 -2 -3 -4 -5 -6
Output of the original tray paper sensorOutput of the registration sensor For factoryFor factory+5VGND
Test pin No. Checks
Table 5-402Test Pins on the DADF Controller PCB
• Checking the Output of the Original Tray Paper Sensor/Registration SensorIf you have replaced the DADF controller PCB, original tray paper sensor, or registrationsensor in the field, you must make sure that the output of each sensor is correct. (The light-emitting unit and the light-receiving unit of these sensors are not of a single entity.)
Making Checks1) Turn off the copier's power switch.2) Shift bit 4 of the DIP switch DSW on the DADF controller PCB to on.
Figure 5-402
3) Turn on the copier's power switch.4) With no original on the original tray, press the push switch SW3 on the DADF controller PCB
once.5) Check to make sure that LED1/LED2 on the DADF controller PCB turn on, and the voltage of
TP1-1 is 1.1±0.1 V and the voltage of TP1-2 is 4.1±0.2V.If the voltage of either TP1-1 or TP1-2 is not as indicated, suspect displacement of the light-emitting/-receiving unit of the sensor corresponding to the probe of the meter. Check theposition of the sensor.
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 5-25
CHAPTER 5 TROUBLESHOOTING
B. Indicator PCB
LED 101LED 102 2J102
1
J101
61
Figure 5-403
LED101LED102
Indicates the presence of an original.Indicates the presence of an original.
LED Description
Table 5-403LEDs on the Indicator PCB
CHAPTER 5 TROUBLESHOOTING
5-26 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
C. DIP Switch FunctionsThe DIP switch DSW1 on the DADF controller PCB have the functions shown in Table 5-403.
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
Normaloperation mode DSW1 setting Purpose
Normal operation
Pick-up/deliverystep operation
Reduced pagecompositionmodesheet-to-sheetdistanceadjustment
Pick-up/reversal/delivery stepoperation
Original stopposition
Continuouspick-up/deliveryoperation
Sensor levelcheck
With all bits at OFF, the machine is in normaloperation state.
Each press on the push switch SW3 on the DADFcontroller PCB causes the machine to repeat pick-up/delivery operation.
A press on the push switch SW3 on the DADF controllerPCB will cause the machine to pick-up two originals andstop them on the copyboard side by side. Thereafter,press the push switch SW1/SW2 as necessary to adjustthe sheet-to-sheet distance. At the end, press the pushswitch SW3 to store the new setting.
Each press on the push switch SW3 on the DADFcontroller PCB will cause the machine to repeat pick-up/reversal/delivery operation.
A press on the push switch SW3 on the DADF controllerPCB will cause the machine to pick-up an original andstop it on the copyboard glass. Thereafter, press the pushswitch SW1/SW2 to adjust the original stop position.At the end, press the push switch SW3 to store the new
setting.
Place three or more sheets of copy paper on the originaltray, and press the push switch SW3 on the DADFcontroller so that the machine will repeat pick-up/delivery operation continuously.
Each press on the push switch SW3 on the DADFcontroller PCB will put the original tray paper sensor/registration sensor in level check mode.
(top pick-up)
(top pick-up)
Table 5-403a
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 5-27
CHAPTER 5 TROUBLESHOOTING
Table 5-403b
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
Normaloperation mode DSW1 setting Purpose
Non-default sizeoriginal
Shift bit 7 to on if any of the following sizes is used:
Separation belt/feeding rollercleaning
A press on the push switch SW3 on the DADF controllerPCB will cause the pick-up motor to rotate to clean theseparation belt and the feeding roller.To stop, press the push switch SW3 once again.
Original sizehorizontaldirection detection
Use it to store the position of the side guides of theoriginal tray for A4 or LTR size originals.
(top pick-up mode)
(A4 size)
(LTR size)
DADF model Length in feedingdirection (mm)
A/B-configuration
Inch-configuration
220 to 250
220 to 260
CHAPTER 5 TROUBLESHOOTING
5-28 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Code Cause
• The pick-up motor (M1) does not rotate.• The pick-up roller sensor (S5) is faulty.
• A flag is mounted on the spindle of the pick-up motor (M1), and the rotation of the pick-up motor is mounted in reference to the flag blocking the pick-up roller sensor (S5). This error is identified when the sensor does not turn on and off twice or more within 1 sec
• The belt motor (M3) doe not rotate.• The belt motor sensor (S10) is faulty.
• The number of belt motor clock pulses within 200 msec is lower than specific value.
• The feeder motor (M2) does not rotate.• The feeder motor clock sensor (S9) is faulty.
• The number of feeder motor clock pulses within 200 msec is lower than a specific value.
• The delivery motor (M5) does not rotate.• The delivery motor clock sensor (S13) is faulty.
• The number of feeder motor clock pulses within 200 msec is lower than a specific value.
• The original tray paper sensor (S1) is faulty.• The registration sensor (S3) is faulty.
• The communications IC on the feeder side is faulty.
• The output of the sensor is 2.3 V or higher in the absence of paper.
• The communications with the copier is disrupted for 5 sec or more.
Description
V. SELF DIAGNOSIS
A. DADF Self Diagnosis
The microprocessor on the machine's DADF controller PCB is provided with a function whichchecks the state of the machine and, upon detection of an error, will indicate an error code on thecopier's control panel.
Table 5-501
Caution:1. When the self diagnostic mechanism has turned on, the copier may be reset by turning it off
and then on.2. When the DADF is out of order, copies may still be made by placing originals on the
copyboard glass.
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
APPENDIX
A. GENERAL TIMING CHART ........ A-1B. NAMES AND ABBREVIATIONS OF
SIGNALS..................................... A-2C. DADF-C1 GENERAL CIRCUIT
DIAGRAM ................................... A-3
D. DADF CONTROLLER CIRCUITDIAGRAM ................................... A-4
E. DISPLAY BOARD...................... A-11F. SPECIAL TOOLS ...................... A-12
G. SOLVENTS AND OILS ............. A-13
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) A-1
A. GENERAL TIMING CHART1. top pick-up mode, A4, 2 originals (single-
sided original to single copy)
1
2
3
4
5
6
7
8
9
10
11
12
13
(S1)
(S7)
(S3)
(S12)
(S11)
(M1)
(M2)
(M3)
(CL)
(SL1)
(SL2)
(BK)
(M5)
Original tray paper sensor
Pick-up sensor
Registration paper sensor
Delivery sensor 2
Re-circulation sensor
Pick-up motor
Feeder motor
Belt motor
Clutch
Stopper plate solenoid
Paper retaining solenoid
Brake
Delivery motor
RDF operation 1st original picked up/fed 2nd original picked up
Scanner moved forward
1st/2nd original fed
Scanner moved in reverse
1st/2nd original delivery fed
Scanner move in reverseScanner moved forward Copier operation
Original setCopy Start key ON
: Motor low-speed rotation.
: rotation(pick-up direction) rotation.
: (copier mode delivery direction) rotation.
CW CCW CCW CCW CCW
CCW CCW
CW
CCW
A-2 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
B. NAMES AND ABBREVIATIONS OF SIGNALSThe following are the signal names and abbreviations used in thismanual and circuit diagrams.
Note:The abbreviations in parentheses are analog signals, whichcannot be expressed in terms of '1' and '0'. Others are digitalsignals, which may be expressed in terms of '1' and '0'.
BDIR BELT MOTOR ROTATION CommandBK BRAKE DRIVE CommandBMCLK BELT MOTOR CLOCK PULSE SignalBMON BELT MOTOR DRIVE CommandBMPWM BELT MOTOR SPEED CONTROL CommandCL CLUTCH DRIVE CommandCNCT CONNECT SignalEPMS DOCUMENT ENPUTY1 SignalFLPSL1 DEFLECTOR SOLENOID DRIVE CommandWIDTH DOCUMENT SIZE DETECTION SignalORGLED DOCUMENT SENC DRIVE CommandFMCLK FEED MOTOR CLOCK PULSE SignalFMPWM FEED MOTOR DRIVE CommandRSS LAST DOCUMENT DETECTION SignalSPRS PAPER DETECTION Signal 1EJTS1 PAPER DETECTION Signal 2ENTS PAPER DETECTION Signal 3EJTS2 PAPER DETECTION Signal 4TURNS PAPER DETECTION Signal 5DCTS PICK-UP ROLER START POSITION SignalRFC DADF CLOSED SignalRSDRV RECYCLE MOTOR DRIVE CommandRSIN DADF SERIAL INPUT SignalRSOUT DADF SERIAL OUTPUT SignalSDIR PICK-UP MOTOR ROTATION CommandSMON PICK-UP MOTOR DRIVE CommandSMPWM PICK-UP MOTOR SPEED CONTROL CommandSTPSLD STOPPER SOLENOID DRIVE CommandUPCC UPPER COVER CLOSED Signal 1CVRSW UPPER COVER CLOSED Signal 2WGTSL WEIGHT SOLENOID DRIVE Command
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) A-3
O
O
(white) (white)
(white) (black) (blue)
(white)
(black)
(white)
(white)
(white)
(white)
Cover PI
CL
SL2
SL1
J203
S1
M3
M2
M1
BK
J8 J13
J12
J1J7
J6J5
1 2
1
2
1 2
1
2
1 2
3
1 2
3
1 2
3
1 2
3
2 1
2 1
1312
110
78
914
1312
110
78
914
BL
PK
SB
OR
OR
OR
OR
4 3
2 1
1 2
3 4
1 2
3
9 8 7 6 5 4 3 2 19 8 7 6 5 4 3 2 1
6 5 4 3 2 1 6 5 4 3 2 1
3 2
1
1 2
3
1 2
1
2
M4
VR
J101
J218
J102
J219
J308
S13
1 2 3 4 5 6 7 8 91 2 3 4 5 6 7 8 9 10
10
BL
PK
BR
BL
SB
BR
OR
R R OR
6 5 4 3 2 1
1 2 3 4 5 6
3 2 1
1 2 3
2 1
1 2
J220
2 1 2 1
M5
SL4
V V V V V V OR
R
J221
J307
3 2 1 3 2 1
3 2 1 3 2 1
J306
1 2 3 4 1 2 3 4
1 2
1234567
1234567
C3C2C1C4
A7A6A5A4A3A2A1
B1B2B3B4B5B6B7B8
OR
BL
OR
OR
BK
W
GY
Y
V
R
BL
+24V OR
GND BL
GN
J1
J2
J201
FG
FG
MS1
J3
MS2
A1 A3 A2 A4 A6 A5 A7 A9 A8 A1 A11 A1 B5 B4 B3 B11 B1 B9 B6 B8 B7 B2 B1B1
A1 A3 A2 A4 A6 A5 A7 A9 A8 A1 A1 A1 B5 B4 B3 B11 B1 B9 B6 B8 B7 B2 B1B1
BR
BL
BR
GY
BL
BR
W BL
BR
PK
BL
BR
SB
BL
Y BL
Y BL
BR
W BL
Y Y
J9
J305J304J303
J209J208J207
3 1 2 3 1 2
1 2 3 1 2 3
1 2 31 2 3
3 1 2 3 1 2
3 1 2 3 1 2
3 1 2 3 1 2
1 3 2
3 1 2
1 3 2
3 1 2
1 3 2
3 1 2
1 2
2 1 4 3 2 1
1 2 3 4
2 1 2 1
S4
LED3
J205
J302
J212
J211
S3
S10S9S8S7S6
J210
SL3
1 2
2 1
J214
J204
3 1 2 3 1 2
1 2 3 1 2 3
4 5 6 3 1 2 4 5 6 3 1 2
BR
Y BL
BR
GY
BL
J5
J206
S5
J215
S11
J214
1 2
1
2
V
1 2
2 1
1 2
2 1
1 1
J217
J216
1
S12
S14
NO
C
Paper deflecting platesolenoid
Delivery sensor 1Pick-up sensor Reversal sensor
Feeder motorclock sensor
Belt motorclock sensor
Registration paper sensor(light-receiving)
Registration rollerclock sensor
Pick-up roller sensor
Registration reversal sensor(light-emitting)
Delivery sensor 2
Delivery motor
Stampsolenoid
Re-circulationmotor
Indicator PCB
Pick-up motor
Feeder motor
Brake
Belt motor
Paper retaining platesolenoid
Stopper platesolenoid
Original tray paper sensor
Clutch
RDF controller PCB
Re-circulation sensor
Original width detecting volume
Upper cover switch
DADF switch
Delivery motorclock sensor
C. DADF-C1 GENERAL CIRCUIT DIAGRAM
A-4 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
D. DADF CONTROLLER CIRCUIT DIAGRAM (1/6)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
100
99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76
0
1
2
3
0 1 2 3 4 5 6 7
0 1 2 3 4 5 6 7 8 9 10
17
16
15
14
R138
+5V
R3+5V
+5V
X1
C15
C16
+5V
Q1
Vcc
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
RES0*
Vss
P90/TxD0
P91/TxD1
P92/RxD0
P93/RxD1
P94/SCK0
P95/SCK1
P40/D0
P41/D1
P42/D2
P43/D3
Vss
P44/D4
P45/D5
P46/D6
+5V
+5V
MD2
MD1
MD0
P66/LWR*
P65/HWR*
P64/RD*
P63/AS*
Vcc
XTAL
EXTAL
Vss
NMI
RES*
STBY*
CLKOUT
P62/BACK
P61/BREQ*
P60/WAIT*
Vss
P53/A19
P52/A18
P51/A17
P50/A16
P27/A15
P26/A14
P47/D
7
P30
/D8
P31
/D9
P32
/D10
P33
/D11
P34
/D12
P35
/D13
P36
/D14
P37
/D15
Vcc
P10
/A0
P11
/A1
P12
/A2
P13
/A3
P14
/A4
P15
/A5
P16
/A6
P17
/A7
Vss
P20
/A8
P21
/A9
P22
/A10
P23
/A11
P24
/A12
P25/
A13
PA7/A
20
PA
6/A
21
PA
5/A
22
PA
4/A
23
PA
3
PA
2
PA
1
PA
0
Vss
P84
P83
P82
P81
P80
AV
ss
P77
/AN
7/D
A1
P76
/AN
6/D
A0
P75
/AN
5
P74
/AN
4
P73
/AN
3
P72
/AN
2
P71
/AN
1
P70
/AN
0
Vre
f
AV
cc
C1
11 12 13
+5V
+5VC17
R2
JP1
R1
+5V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19 20 21 22 23 24 25 26 27 28 29 30 31 32
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
64 63 62 61 60 59 58 57 56 55 54 53 52 51
0 1 2 3 4 5 6
7
2 3 4 5 6 7
3 2 16 5 47
1
0
+5V
C3
Q3
A7
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
PO0
DQ2
DQ
3
DQ
4
DQ
5
DQ
6
DQ
7
VC
C A0
A1
A2
A3
A4
A5
A6
X2
C20 C19
RA1
8
+5V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
12
7
6
5
4
3
2
1
0
Q2C2
14
13
8
9
11
10
17
7
6
5
4
3
Vpp
A16
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
O0
O1
O2
GND
0
1
2
18
8
17
Q6
C21
89
1
2
3
4
8
7
6
5
Q4
RDY
Vcc
CS
SK
RESET
GND
DO
DI
8
7
6
5
1
3
2
0
Q5
GNDVcc VOUT
C5
4
+5V
DQ1
DQ0
W*
R*
S*
BM
INTR
RXD3
TXD3
RXD2
TXD2
RXD1
TXD1
CTS3*
CTS2*
CTS1*
CLK
P12
CNVS
S
RS
T*
INT
P10
XIN
XO
UT
VS
S
P07
P06
P05
P04
P03
P02
P01
Vcc
PGM*
NC
A14
A13
A8
A9
A11
OE*
A10
CE*
O7
O6
O5
O4
O3
DSW1
+5V
+5VLED1
LED2
R13
R15
R16
R7
R6
R5
+5V
SW1
SW2
SW3
+5V R25
RXD2
TXD2
RXD1
TXD1
OPSW
EDTCT*
R4
1 2 3
RESETB*
RESETA*
RESETA*
EMPWM
RSMON
SOLTMR
FG/CLK
DI
CS*
DO
SCK
+5V
RE
SE
TB
* Q7
810
9Q6
12 13
C4
+5V
+5V
FG
EC
LK
EN
TLE
D
EM
PLE
D
FF
V
BF
V
EJTS2
CVRSW
SDIR
ORGLED
BK
CL
WGTSL
STPSL
FLPSL1
SMPSL
BDIR
SM
ON
SM
PW
M
FM
PW
M
BM
ON
BM
PW
M
DC
TS
RC
LK
FC
LK
BC
LK1
RS
S
WID
TH
EN
TS
EM
PS
SPRS
EJTS1
TURNS
R139R161
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) A-5
Q11PR
CLR
13
D
>CK
Q
Q*
10
9
6
12
11
Q11
+5V
PR
CLR
14
2
3
5
6
Q
Q*
D
KC<
+5V
+5V
+5V
N.IN
ININ
FB
TCON
Ct
Rt
GND
C1
N.IN
ININ
ROUT
OCON
Vcc
C2
E2
E1
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
12
1311
2
13
B6
B8
B7
1
2
1
2
3
10
11
J9
J9
J9
J13
J13
J6
J6
J6
J5
J5
6
7
1
2
3
4
1
2
1
2
3
4
5
6
7
8
9
J1
J1
J2
J2
J2
J2
J3
J3
J8
J8
J8
J8
J8
J8
J8
J8
J8
1J15
STPSL
D20 C30
+24V
R48
R49
R47Q22
Q24Q7R51
BK
CL
R46
R43
C29
CP1
D4
D5
D6
+5V
R44
Q21
+5V
+24V
Q23Q7
CVRSW R45
+24V
R42L1
+5V
R52
SOLTMOR
R40R41
Q14
Q20
D2
R35
R38
R37
R36
C28
Q15
OPSW
+5V
R27
CVRPSVQ16
Q17
+5V
C22
CB1
C24
ZD1
C26
ZD2
C23
+24V
C25
+5V
R28R29 RSS
R30
R31
+5V
+5V
+5V
C52 C27
R32
ORGLED
RSDRV
WIDTH
RSSENS
Q18
D3
Q19
R80
+5V
R79
R77
C31
D17
C32
D21
Q51
R78
RSMON
RSSENS
+24V
WGTSL
RESETB∗
R128Q26
D8
SL SWCLK
R39
R33 R34
D1R26
+24U
J5
J5
J5
12
13
14
D. DADF CONTROLLER CIRCUIT DIAGRAM (2/6)
A-6 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
–+
2
3
4
11
1
+24U +5V
+5V
–+
2
3
8
4
1
+5V
R59R53
Q30 Q32
R60
Q33
Q35
R54
Q28 Q31
R72
R69
R64
R133
R55
2
1
13
12
9
10
5
4
Q8
Q8
Q8
Q8
2
1
13
12
9
10
5
4
3
11
8
6
3
11
8
6
Q610 11
BMPWM
BDIR
Q27
+5V
+24V
D9
D10
D14D13
C54
D12 C53 R58R66
R61
+5V
Q56
Q60
R67 R70
+24V
R134
R57
R56
Q38 R68 R71
Q43
Q40 Q42
Q41
Q44
Q6
Q6
2 1
4 3
Q9
Q9
Q9
Q9
BMON
SMPWM
SDIR
SMONQ6
6 5
FMPWM
R140
Q49
+24V
D15
Q46
D16
R76
R73
1
2J7J7
1
2
J12
J12
1
2
3
J11
J11
J11
BELT_MTR
SPR_MTR
FEED_MTR
R62
R65
R63
D. DADF CONTROLLER CIRCUIT DIAGRAM (3/6)
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) A-7
Q47
D22 R
127
+24V
Q48
R141
D23
+24V
D11
Q36R129
+5V
R113
+5V
R114
R115
CP10
+5V
R130
+5V
R131
R132
CP9
C40
J14
J14
8
7
J14
J14
9
10
EJCT_MTR
STAMP SL
EMPWM
SMPSL
J14
J14
J14
4
6
5
EJTS2
ECLK
J14
J14
J14
3
2
1
D. DADF CONTROLLER CIRCUIT DIAGRAM (4/6)
A-8 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
–+
–+
–+
5
6
–
+
–+
+
–
+1011
Q10
Q50
Q52
D29
Q50
2
3
8
4
8
4
+5V
C/R
CLR
+5V
3
B
A
13
4
Q
Q*
2
1
Q12
Q12CP7
R135
D24
+24U
Q57
Q57
1
R144
C42
C41
CP2
C45
15 14
C+5V
Q58
+5V
6
5
+5V
C/R
CLR
+5V
11
B
A
5
12
Q
Q*
10
9
Q12
Q12CP8
R136
D25
+24U
7
R143
C44
C55
C43C46
7 6
C+5V
Q58
CP5
CP6
R9 R10
R17
R11 R12
R18
13
12
4
11
14
Q50
+5V
D26
+5V
R24
C50
C18
R20R19
R21 R22
R23C47
C48
C49
+24U
6
5
4
11
7
+24U
+5V
+5V
9
10
4
11
8
+24U
+5V
+5V
+5V
6
5
8
4
7
+24U+5V
R86
R88
R87
R89
R91
R92
R94
R95
R97
R98
R100
R90
R93
R96
R99
C33
C34
C35
CP3
CP4
CP1
CP14
1
SPRS
EJTS1
TURNS
ENTLED
ENTS
SLSWCLK
FLPSL1
DCTS
RCLK
J9
J9
J9
J9
J9
J9
J9
J9
J9
J9
J9
J9
J9
J9
J9
J9
J9
J9
J9
J9
J9
A1
A3
A2
A4
A6
A5
A7
A9
A8
A12
A11
A10
B5
B4
B3
B9
B10
B12
B11
B2
B1
Q25
+24V
D7
C53
J5
J5
J5
J5
J5
J5
J5
J5
J5
1
2
3
4
5
6
7
8
9
C37
R106R107
R85
R105
R83+5V+5V
+5V
R84
R50
R102
R82
R101
4
56
Q7
+5V
+5V
+5V
+5V+5V
R142
8 9
Q10
FG
FG/CLK
TP1
TP1
L3
2
TP1
3
TP1
FFV
BFV
FCLK
EMPLED
BCLK1
EMPS
R108
R112
R147 R146
R104
R103
R148R149
R150
R156
R154
R153R151
R152
D27
C51
R155 R157 D28
R110
R109
R111
C36
C13
Q59
R145
D. DADF CONTROLLER CIRCUIT DIAGRAM (5/6)
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) A-9
VCC
GND
Q12
+5V
VCC
GND
Q8
C8
+5V
14
7
14
7
VCC
GND
Q11
C11
+5V
14
7
VCC
GND
Q7
C7
+5V
14
7
VCC
GND
Q10
C10
+5V
14
7
VCC
GND
Q6
C6
+5V
14
7
VCC
GND
Q9
C9
+5V
14
7VCC
GND
Q58
C14
C12
+5V
16
8
+5V
+5V +5V
+5V
+5V +5V
D18
R117 R118
R116
C38
R120
R121Q54
D19
R122 R123
R158
R159
R160
C39
R125
R126Q55
R124
R119
12
Q10
13
6
Q10
5 4
Q10
3
2
Q10
1
EDTCT*
RXD2
TXD2
RXD1
TXD1
J10
J10
J10
J10
J10
J10
J10
J10
J1
J1
J1
J1
J1
L2
7
8
5
6
1
2
3
4
3
5
4
1
2
D. DADF CONTROLLER CIRCUIT DIAGRAM (6/6)
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) A-11
APPENDIX
E. DISPLAY BOARD
R101
R102 R103
LED101
LED102
PI101
J101
J102
3
2
1
A
K E
C
4
5
6
1 2
APPENDIX
A-12 COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
F. SPECIAL TOOLS
You will need the following special tools in addition to the standard tools set:
The following applies:A: Each service person is expected to carry one.B: Each group of five service persons is expected to carry one.C: Each workshop is expected to keep one.
Uses
For removing cliprings (4 to 9 mm).
For adjusting thetension on the timingbelt, separation belt (0to 600 g).
No.
1
2
Tool name
Stop ring•Pliers edgereplacement
Tension gauge
Tool No.
CK-0246
CK-0058
Shape Rank
B
B
COPYRIGHT © 1999 CANON INC. CANON DADF-C1 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) A-13
APPENDIX
G. SOLVENTS AND OILS
Remarks
•Do not bring near fire.•Procure locally.
Tool No.:CK-0551 (20 g)
Tool No.: TKN-0454
No
1
2
3
Name
Alcohol
Lubricant
Cleaning tissue
Uses
Cleaning; e.g., glass,plastic, rubber(external covers).
Lubricating
Cleaning; e.g., feedingbelt, copyboard cover,copyboard glass
Composition
Fluoride-familycarbon hydrogen,alcohol, surfaceactivating agent,water
Silicone oil
Prepared byOffice Imaging Products Technical Support Dept.1
Office Imaging Products Technical Support Div.Office Imaging Products Quality Assurance Center.
CANON INC.Printed in Japan
REVISION 0 (JAN. 1999) (33130)
5-7, Hakusan, 7-chome, Toride-City, Ibaraki-Pref., 302-8501, Japan
0299S1.51-1PRINTED IN JAPAN (IMPRIME AU JAPON)
This publication is printed on
70% reprocessed paper.