Canon PC940 Support Question
Canon PC940 Support Question
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Question posted by toniv on January 2nd, 2015
Gray Streaks
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Answer #1: Posted by BusterDoogen on January 2nd, 2015 11:27 AM
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Related Canon PC940 Manual Pages
Service Manual - Page 1
... 0
PC860 F13-8491
PC880 F13-8291
PC890 F13-8242
PC920 F13-8431 F13-8441
F13-8461
PC921 F13-8432
TYA00001- TVC00001- TVG00001-
TVJ00001- TVB00001PUD00001PUE00001PUH00001- TZA00001- PC940 F13-8436
PC941 F13-8437
PC950 F13-8231 F13-8241
PC960 F13-8434
PC980 F13-8232
PC981 F13-8233
TVD00001- AUG. 1999
COPYRIGHT © 1999...
Service Manual - Page 2
... SLIGHTLY FROM ACTUAL MACHINE VALUES OR THOSE FOUND IN ADVERTISING AND OTHER PRINTED MATTER. ANY QUESTIONS REGARDING INFORMATION CONTAINED HEREIN SHOULD BE DIRECTED TO THE COPIER SERVICE DEPARTMENT OF THE SALES COMPANY.
Service Manual - Page 5
... Universal 500 sheets 500 sheets
The notation "√" indicates that the item in the following table.
Model
PC860 PC880 PC890 PC920 PC920 PC920 PC920 PC921 PC940 PC941 PC950 PC950 PC950 PC960 PC980 PC981
Type code
TYA TZA UAA PUD PUE PUH TVB TVC TVD TVE PUF PUG TVF TVG TVH TVJ...
Service Manual - Page 7
ROUTINE MAINTENANCE BY THE USER 1-17
VI. Outline 3-1 B. Scanner Drive System ..........3-4
II. Controlling the Scanning Lamp 3-9
III. Scanner Drive Assembly .... 3-13 B.
Copier 1-2 B. USING THE MACHINE 1-15 A. Outline 1-20
CHAPTER 2 BASIC OPERATION
I . OPERATIONS 3-1 A. Exposure System 3-37
COPYRIGHT © 1999 CANON INC. CONTENTS
CHAPTER 1 GENERAL DESCRIPTION
I ...
Service Manual - Page 11
... specifications of the machine, instructions on how to operate the machine, and an outline of copying process. FEATURES 1-1 II. External View 1-10 B. Control Panel 1-15
V. Copier 1-2 B.
Service Manual - Page 13
...; The paper may be as large as A4 (LGL) or as small as he/she performs simple replacement/cleaning work immediately after power-on.
4. Personal Copier with existing Canon machines).
3.
Service Manual - Page 14
....) Single-feeder (single-feeder type) Multifeeder (multifeeder type) Curvature separation + static eliminator Flat heater Blade Center reference (copyboard)
Table 1-202
1-2
COPYRIGHT © 1999 CANON INC. Copier
1.
Service Manual - Page 207
CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
8-1 See Figure 8-101 for an outline of the feeding route. Outline
The ADF picks up the originals stacked on the original tray starting with the topmost original, moves them through the copyboard, and delivers them.
ADF
A.
ADF
Original tray
Copier
Figure 8-101
COPYRIGHT © 1999 CANON INC. CHAPTER 8 ADF
I.
Service Manual - Page 208
...ADF
B Basic Construction
1. The copying modes selected on the copier are communicated to the ADF in serial, and the ADF
communicates to the copier the state of the Electric Circuitry The ADF's major electrical...on the ADF controller PCB reads the signals from the sensors and the copier and
generates signals to the copier in advance. Outline of feeding originals to drive the motor at such ...
Service Manual - Page 209
Figure 8-103
COPYRIGHT © 1999 CANON INC.
J114
J202
J2
Serial communication
Copier
*Negative logic. Inputs to and Outputs from the ADF Controller PCB a.
CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
8-3 CHAPTER 8 ADF
2. ...
Service Manual - Page 220
CHAPTER 8 ADF
G. The CPU (Q1) on the copier and stop the pickup motor at the same time.
When the limiter function is equipped with a limiter function, preventing overcurrent from flowing into the motor. ...
Service Manual - Page 226
CHAPTER 8 ADF
6) Disconnect the two connectors [8], and remove the screw [9]; CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) then, remove the cable bush [10].
[10]
[8]
[9]
7) Remove the two lockpin [11], and remove the ADF from the copier.
[8]
Figure 8-204
[11]
[11]
Figure 8-205
8-20
COPYRIGHT © 1999 CANON INC.
Service Manual - Page 227
CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
8-21 Removing the ADF.") 2) Remove the feeding roller [1] from the copier.
(See "A. B.
External Covers
CHAPTER 8 ADF [1]
Remove the covers as follows when cleaning, checking, or repairing the inside of the machine: 1) Remove the ADF from the
...
Service Manual - Page 244
...water tend to warm place, droplets of the machine. Unpacking and Installation
Step 1
2
Work
Checks and remarks
Take out the copier and the attachments from the shipping box, and check to install it. This phenomenon is missing:
• Cassette •... JAPON)
Shipping attachment [1]
You will be storing the shipping attachment [1] inside the machine in copiers, can cause blank copies.
Service Manual - Page 267
... when checking the voltage using a meter: "measure the voltage between J109-1 (+) and -2 (-) on the DC controller PCB." example: J109-1 (+) ..... or the cover.
is not the copier's. Connect the negative probe.
11-2
COPYRIGHT © 1999 CANON INC.
YES Rest omitted.
• Often, you are expected to the
NO
power outlet? CHAPTER 11...
Service Manual - Page 268
Check the following : 1. Density of gray scale No. 1 (good or bad; Density of gray scale No. 9 2.
The machine is equipped with a function to three copies of difference between front
and rear (Note 2) 3.... power supply PCB (See the appropriate troubleshooting procedure.)
END
Note: 1. Image Adjustment Basic Procedure
Adjusting the Optimum Density
Is gray scale No. 9 barely visible?
Service Manual - Page 270
... so that the width is copied in Direct. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
11-5 CHAPTER 11 TROUBLESHOOTING
II. Copier a.
STANDARDS AND ADJUSTMENTS
A.
Service Manual - Page 307
SW101
Figure 11-263
3) Turn off the AE mechanism, and set the copy density adjusting lever on the DC controller PCB gradually until gray scale No. 9 is barely visible. VR107
J131 J101 J102 J101
J130
J114
J102 VR104VR105VR106
VR107
VR103VR102 J107
J103
J104
J105
Figure 11-264
J109
J106
...
Service Manual - Page 331
... PCB.
YES End. YES/NO YES
NO
Action End. (Check the wiring between the copier's DC controller PCB and the ADF controller PCB.) Replace the ADF controller PCB.
345
ON...
ADF controller PCB
3 Replace the ADF controller PCB. Is the problem corrected? NO Replace the copier's
DC controller PCB.
13 E803
Cause Malfunction
DC controller PCB. NO Replace the composite power supply...
Service Manual - Page 361
...
Switch
J3 OR GN Y V GY W OR
M1 Pickup motor M1 Belt motor
54321
54321
1234567 1234567
Color coding
BK BLACK BL BLUE BR BROWN GY GRAY GN GREEN OR ORANGE PK PINK R RED SB SKY-BLUE V VIOLET W WHITE Y YELLOW
COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED...
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