Canon PC940 Support Question
Canon PC940 Support Question
Find answers below for this question about Canon PC940.Need a Canon PC940 manual? We have 1 online manual for this item!
Question posted by Kenkent1 on November 20th, 2021
Keep Getting A Paper Jam Symbol But There Is No Paper Jammed In Machine
paper jam icon but no jam present in machine
Current Answers
Answer #1: Posted by SonuKumar on November 21st, 2021 8:11 AM
SonuKumar
Member since:
May 9th, 2021 Points: 16,620,300
Member since:
May 9th, 2021 Points: 16,620,300
What do I do when my Canon printer says paper jam but there is none?
Quick steps to fix the Canon Printer Paper Jam Error
Power off the Canon printer and disconnect the power cord.
Open the printer's paper output tray and lift the cover.
Verify if jammed papers are present under the cartridge holder.
Hold the paper jams firmly in both hands.
Pull out the papers slowly without tearing it
https://www.fixya.com/support/t286372-cannon_copier_pc940_paper_jam
https://howtosetup.co/how-to-fix-canon-printer-paper-jam-error/
https://support.usa.canon.com/kb/index?page=content&id=ART115355
Please respond to my effort to provide you with the best possible solution by using the "Acceptable Solution" and/or the "Helpful" buttons when the answer has proven to be helpful.
Regards,
Sonu
Your search handyman for all e-support needs!!
Related Canon PC940 Manual Pages
Service Manual - Page 8
... SYSTEM ...4-1 A. Timing Chart for the Image Formation System 4-3 C. Controlling the Developing/ Separation Static Eliminator Bias 4-11
F. Outline 5-1 B. Detecting Jams 5-12
II. Measuring the Density of Paper 5-9 D. Blank Exposure 4-26
CHAPTER 5 PICK-UP/FEEDING SYSTEM
I . DISASSEMBLY/ASSEMBLY ..... 5-18
A. Pickup Assembly 5-19 B. Controlling the Fixing Temperature...
Service Manual - Page 9
...D. Pickup Operation 8-8 F. Detecting Original Jams ..... 8-16 J. Feeding System 8-26...Motor 8-14
H. ADF 8-1 A. UNPACKING AND
INSTALLATION 9-2 A. MOVING THE MACHINE .......... 9-12
CHAPTER 10 MAINTENANCE AND SERVICING
I . CANON PC800s/900s ... D. STORING AND HANDLING
THE CARTRIDGE 10-2
A. Placing Copy Paper 9-9 III. Unpacking and Installation ....9-2
B. Outline 8-1 B ...
Service Manual - Page 10
... JAPON) CHAPTER 11 TROUBLESHOOTING
I . MAINTENANCE AND INSPECTION 11-3 A. STANDARDS AND ADJUSTMENTS 11-5 A. ADF 11-30 C. TROUBLESHOOTING MALFUNCTIONS 11-61
A. Troubleshooting Malfunctions 11-61
V. Copy Paper Jam 11-75 B. ARRANGEMENT AND FUNCTIONS OF ELECTRICAL PARTS 11-79 A. Sensors and Solenoids .... 11-79 B. Lamp, Heater, Motor, Etc. 11-81 D. PCBs 11-82 E. ADF...
Service Manual - Page 13
... manual feed mode, paper may expect quality copy images at maximum (1/100 to make jam removal easy.
8. ...paper (500-sheet cassette + multifeeder; CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
1-1 Personal Copier ...machine's top unit may contain as many as he/she performs simple replacement/cleaning work immediately after power-on.
4. Various Paper Sizes • The paper...
Service Manual - Page 27
...source: cassette Copy density: auto
mode
Starts copying. USING THE MACHINE
A.
Turns on when indicating a ratio.
100 (max.; COPYRIGHT © 1999 CANON INC. Name
1 Copy density adjusting lever
2 Copy density mode indicator
3 Default ratio indicator
4 Paper selection indicator*1
5 Jam indicator 6 Count/ratio indicator
7 Clear/stop key
8 Copy start key 9 Power switch
Figure 1-401...
Service Manual - Page 29
... the machine is ... Turn on the original tray of blank copy paper (A4/LTR) on the machine, and hold down the Copy Density Mode Selection... key for 4 sec or
more. • The count/ratio indicator will be soiled or copy paper... ADF. 3) Press the Copy Start key.
• Copy paper will indicate 'U6'. ROUTINE MAINTENANCE BY THE USER
Instruct the ...
Service Manual - Page 30
... a moist cloth (water or mild detergent solution) in the direction of
the arrow in the figure; Static Eliminator 1) Remove the static eliminator cleaner from the machine. If Jams Occur Frequently a. Figure 1-503 (Copyboard type)
1-18
COPYRIGHT © 1999 CANON INC.
Figure 1-502
2. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME...
Service Manual - Page 31
... have finished cleaning. (Work briskly.)
COPYRIGHT © 1999 CANON INC.
CHAPTER 1 GENERAL DESCRIPTION
Figure 1-504 (ADF type)
2) Pull the open/close lever to open the machine. 3) Using the static eliminator cleaner, clean the static eliminator.
• Brush out the paper lint or the like from the groove of the static eliminator.
Service Manual - Page 33
... of copy paper
Cassette
: Rotation of the following seven steps: Step 1 Primary charging (AC + negative DC) Step 2 Image exposure Step 3 Development (AC + negative DC) Step 4 Transfer (negative DC) Step 5 Separation (curvature separation + static eliminator; Image exposure
7. Development
Delivery 6. Transfer
Manual feed
5. CHAPTER 1 GENERAL DESCRIPTION
The machine's image formation...
Service Manual - Page 38
Outline of Electrical Circuitry
The machine's major electric mechanisms are controlled by the ... home position detection
CPU +5V +24V
• Pre-registration roller paper
detection
• Delivery paper detection
• Vertical path roller paper detection
• Single-feeder paper detection
Composite
power supply PCB
Scanning lamp
Q900
CPU
Fixing heater
Highvoltage...
Service Manual - Page 123
Detecting Jams 5-12
II. Single-feeder Assembly ..... 5-31 D. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Outline 5-1...may be disassembled/ assembled and adjusted. CHAPTER 5
PICK-UP/FEEDING SYSTEM
This chapter explains the principles used from when copy paper is picked up to when a copy is delivered in view of the functions of electrical and mechanical units and in ...
Service Manual - Page 136
... the remaining number of a jam and the selected copying mode;
CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) in other words, it will identify the condition as programmed in the microprocessor. CHAPTER 5 PICK-UP/FEEDING SYSTEM
D. The machine is not equipped with four paper sensors used to make at...
Service Manual - Page 137
... (M1)
2.6sec
No paper 1.5sec
Figure 5-116 (no paper, pickup delay jam) If copy paper does not reach the pre-registration roller paper sensor within a specific period of paper; If the pre-registration roller paper sensor detects copy paper during this 1.5 sec period (approximate), the machine will be identified as a pickup delay jam, and flash the Jam indicator.
CANON PC800s/900s...
Service Manual - Page 138
...
STBY INTR
SCFW
P indication
Cassette pickup solenoid (SL5)
Jam check Vertical path roller paper sensor (PS4) Main motor (M1)
1.2sec Normal
Re-pickup 1.2sec 1.2sec
No paper 1.5sec
Figure 5-118
5-14
COPYRIGHT © 1999 CANON INC. In responce, the machine will be identi- Absence of Paper in the Cassette Pickup Assembly When re-pickup operation...
Service Manual - Page 139
... of faulty feeding, the machine will identify the condition as a vertical path stationary jam, stop the operation immediately, and flash the Jam indicator. CHAPTER 5 PICK-UP/FEEDING SYSTEM
3.
Copy paper inserted
STBY
INTR
SCFW
Single-feeder paper sensor (PS5)
Jam check Pre-registration roller paper sensor (Q751)
Main motor (M1)
5.1 sec
Jam 1.5 sec
Figure 5-119
4. Single...
Service Manual - Page 140
... will identify the condition as a registration paper delay jam, stop the operation immediately, and flash the Jam indicator. Registration Paper Stationary Jam If copy paper does not move past the pre-registration roller paper sensor within a specific period of feeding faults, the machine will identify the condition as a registration paper stationary jam, stop the operation immediately, and...
Service Manual - Page 141
...) Main motor (M1)
4.1sec
normal
4.1sec Jam
1.5sec
Figure 5-123
8.
Delivery Stationary Jam If copy paper does not move past the delivery sensor within a specific period of time because of
feeding faults, the machine will identify the condition as a delivery stationary jam, stop the operation immediately, and flash the Jam indicator.
CHAPTER 5 PICK-UP/FEEDING SYSTEM...
Service Manual - Page 264
... A. Sensors and Solenoids .... 11-79 B. ADF 11-83 F. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) TROUBLESHOOTING MALFUNCTIONS 11-61
A. Copy Paper Jam 11-75 B. CHAPTER 11 TROUBLESHOOTING
I. MAINTENANCE AND INSPECTION 11-3 A.
Service Manual - Page 339
... DC power fails to turn on how to check the photointerrupters, see p. 11-47.)
YES/NO YES
NO YES
Action Remove the jam paper.
YES End. Is the vertical path roller paper sensor (PS4) normal? (For instructions on ." Check the lens cable, pulley, and rail;
if normal, replace the sensor in step 1 normal...
Service Manual - Page 340
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]
[1]
Figure 11-501
COPYRIGHT © 1999 CANON INC. TROUBLESHOOTING FEEDING PROBLEMS
A. CANON PC800s/900s REV...
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