Canon PC940 Support and Manuals
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Most Recent Canon PC940 Questions
I Am Hearing A Grinding Sound When I Try To Use The Copier.
(Posted by Patrishr 1 year ago)
It Makes A Loud Clunking Noise When Its Copying
(Posted by nwooderson 1 year ago)
Reset System?
is there a way to reset the system because it's showing the paper jam icon, but there's no paper jam...
is there a way to reset the system because it's showing the paper jam icon, but there's no paper jam...
(Posted by dalymeaganm 2 years ago)
Flashing Light Question
what did it mean when there is a flashing, looks like a picture cartridge with a lightning bolt atta...
what did it mean when there is a flashing, looks like a picture cartridge with a lightning bolt atta...
(Posted by dalymeaganm 2 years ago)
Streaks
How do I get rid of black streaks. Making it lighter isn't the answermatt
How do I get rid of black streaks. Making it lighter isn't the answermatt
(Posted by matt01095 2 years ago)
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Popular Canon PC940 Manual Pages
Service Manual - Page 10
...) and Check Pins by PCB .......... 11-84
VII. BLANK EXPOSURE (rear) CIRCUIT DIAGRAM A-34
N. STANDARDS AND ADJUSTMENTS 11-5 A. ADF 11-30 C. Electrical 11-41
III. Copy Paper Jam 11-75 B. ARRANGEMENT AND FUNCTIONS OF ELECTRICAL PARTS 11-79 A. SPECIAL TOOLS A-35 O. Troubleshooting Image Faults 11-53
IV. PCBs 11-82 E. SELF DIAGNOSIS 11-86
APPENDIX...
Service Manual - Page 13
...100 to make jam removal easy.
8. COPYRIGHT © 1999 CANON INC. Various Paper Sizes • The paper may contain as many as he/she performs simple replacement/cleaning work ...manual feed mode, paper may be as large as A4 (LGL) or as small as a single entity (cartridge). The user may be between 70% and 141% in -One Cartridge for Simple Maintenance • The photosensitive drum, toner...
Service Manual - Page 61
... the voltage supplied to the scanning lamp active voltage signal. Related Error Code
E220 • The lamp activation detection signal is 56 V for the 120 V model (108.5 V for 1 sec or more although the
scanning lamp activation signal is sent to the setting of VR107 mounted on the composite power supply PCB sends the intensity...
Service Manual - Page 118
...; 1999 CANON INC. Cleaning the Drum
Caution: As a rule, do not touch or clean the photosensitive drum.
1) Open the machine's top unit, and take out the cartridge. 2) Turn over the cartridge, and open the drum cover shutter 3) Clean the drum surface with a flannel cloth coated with toner. If exposed to light for 5 min in which it , use paper, lint...
Service Manual - Page 258
...)
10-1 III. PERIODICALLY REPLACED PARTS
The machine does not have items designated as durables or consumables. DURABLES AND CONSUMABLES
The machine does not have parts which require scheduled servicing. COPYRIGHT © 1999 CANON INC. II. CHAPTER 10 MAINTENANCE AND SERVICING
I.
SCHEDULED SERVICING
The machine does not have any parts which must be replaced on a periodical basis...
Service Manual - Page 264
... Paper Jam 11-75 B. Faulty Feeding 11-78
VI. ARRANGEMENT AND FUNCTIONS OF ELECTRICAL PARTS 11-79 A. PCBs 11-82 E.
Troubleshooting Image Faults 11-53
IV. TROUBLESHOOTING IMAGE FAULTS 11-48 A. Making Initial Checks ....... 11-48 B. TROUBLESHOOTING FEEDING PROBLEMS 11-75 A. Switches 11-80 C. Variable Resistors (VR) and Check Pins by PCB .......... 11-84
VII. CANON PC800s...
Service Manual - Page 319
...scanning lamp, reflecting plate, lens, and mirror.
Replace the cartridge.
2. Replace the transfer charging roller correctly.
6 The copy is still foggy, to the middle setting? Is the problem corrected?
Is the toner image on the photosensitive drum before transfer more or less uneven? YES 1. Replace the scanning lamp. Is the problem corrected? NO 1. Mount the transfer charging roller...
Service Manual - Page 324
... if it . Cause Cartridge
Drum drive assembly High-voltage transformer
Primary high-voltage charging terminal, cartridge
Step 1 2 3 4
5 6
Checks Is the cartridge set in Direct within specification?
Does the cartridge have toner? Replace the cartridge
COPYRIGHT © 1999 CANON INC. Is the primary charging terminal on the power switch.
CHAPTER 11 TROUBLESHOOTING
20 The copy...
Service Manual - Page 330
... and then on ? YES/NO YES
NO
Action End. COPYRIGHT © 1999 CANON INC. CHAPTER 11 TROUBLESHOOTING
8 E210
Cause
Lens home position sensor (PS2)
DC controller PCB
Step 1
2
Checks Does the lens move ."
Is the problem corrected?
End. End. NO Replace the DC controller PCB.
10 E240
Cause Wiring
Composite power supply PCB DC...
Service Manual - Page 336
... replace Q751.
No Check the position of the scanner rail for a moment after the Copy Start key is pressed?
4 Set the meter range to Q751;
COPYRIGHT © 1999 CANON INC. CANON ... Copy Start key is pressed?
No Replace the DC controller PCB. Is the scanner rail soiled?
Is the pre-registration roller paper sensor (Q751) normal? (For instructions on how to rotate.
Does the ...
Service Manual - Page 339
....)
YES/NO YES
NO YES
Action Remove the jam paper.
if normal, replace the sensor in step 1 normal? (For instructions on the composite power PCB.
CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Is the vertical path roller paper sensor (PS4) normal? (For instructions on ." Set the meter range to 30 VDC, and connect...
Service Manual - Page 340
TROUBLESHOOTING FEEDING PROBLEMS
A. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
11-75 CHAPTER 11 TROUBLESHOOTING
V.
Copy Paper Jam
Inside the machine, jams tend occur in the following blocks: [1] Pickup block [2] Separation/feeding block [3] Fixing/delivery block
The troubleshooting procedures that follow are organized according to the location of a jam.
[3]
[2]
...
Service Manual - Page 343
Is the sheets of a type recommended by Canon? Measure the force of the spring of storing paper. Even out the sheets in the cassette uneven? Is the copy paper wrinkled or found askew? Is the problem corrected?
Try paper of paper placed in the cassette. Instruct the user on the correct method of the cassette; Check the fixing assembly...
Service Manual - Page 351
...
11-86
COPYRIGHT © 1999 CANON INC. SELF DIAGNOSIS
The microprocessor on the machine's DC controller PCB is equipped with a self diagnostic mechanism that checks the condition of the machine (particularly, sensors) and indicates an error code in succession. • The temperature...', 'E0' and '01' are flashed alternately.
In the case of a fault.
CHAPTER 11 TROUBLESHOOTING
VII.
Service Manual - Page 352
... by ±20%. CHAPTER 11 TROUBLESHOOTING
Code
Cause • The main motor (M1) is fault. • The DC controller PCB is faulty.
• The composite power supply PCB is faulty.
• The DC controller PCB is faulty.
(
) • The scanner home position sensor (PS1) is faulty. without error
code indication. Description • The rotation...
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