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 CAEFMILLERIII on April 9th, 2013
Springs On Side Door That Holds The Paper In While Copying
The Side Door On The Right Side Of The Machine That Holds The Paper From Coming Out While Copying Will No Longer Stay Shut. There Are Two Little Springs That Are No Longer Attached To Whatever They Were Originally Attached To. How Can We Fix This?
Current Answers
Answer #1: Posted by marian24348 on July 26th, 2013 12:50 PM
marian24348
Member since:
July 26th, 2013 Points: 20
Member since:
July 26th, 2013 Points: 20
you need to replace the door. the springs attached to two little tabs on the door and the tabs tend to break off and they are part of the door itself. A quick temporary fix is to hold the door in place with masking tape. Someone who is really handy might be able to put two tiny eyeglass screw into the plastic to replace the broken tabs.
Related Canon PC940 Manual Pages
Service Manual - Page 13
... maximum (1/100 to make jam removal easy.
8. Large Paper Source • The source of paper may expect quality copy images at 20°C room temperature), enabling speedy copying work .
6.
FEATURES
1. SURF Fixing Assembly • The wait time is possible with existing Canon machines).
3. Various Paper Sizes • The paper may be between 70% and 141% in -One...
Service Manual - Page 14
Type Item
Body Copyboard Source of light
Lens Photosensitive medium
2.
Copier
1. Mechanisms Item
Reproduction Charging Exposure Copy density adjustment Development Pickup
Separation Fixing Cleaning Original orientation
Desk top
Descriptions
Fixed
Halogen lamp (80 V/110 W for 120V-model; 150 V/160 W for 220/240 V-model)
Fixed focal point lens
OPC drum (24-...
Service Manual - Page 29
... Belt (ADF type) b.1 Cleaning in Feeder Cleaning Mode 1) 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 tends to end the mode.
ROUTINE MAINTENANCE BY THE USER
Instruct the...
Service Manual - Page 110
...
COPYRIGHT © 1999 CANON INC. The AE mechanism enables production of copies free of fogging as long as the original is equipped with an auto density adjustment (AE) mechanism designed to the density of Originals
1. Measuring the Density of the original. Outline The machine is more
or less uniform in density by varying the DC...
Service Manual - Page 118
...2. If you must clean it, use paper, lint-free or otherwise. 3. If you...: 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...to rotate it in the direction in which it rotates when
making copies.
Otherwise, the leaf spring used to apply a developing bias to work briskly.
Do not...
Service Manual - Page 126
...5-102 (Single-feeder type)
PS5
PS4 Vertical path roller
Holding plate
5-2
COPYRIGHT © 1999 CANON INC. CHAPTER 5 PICK-UP/FEEDING SYSTEM
DC controller PCB
Pre-registration roller paper detection signal(RPD)
Vertical path roller paper detection signal(PDP)
Delivery paper detection signal(DPD)
Delivery roller
Copy tray
PS3 Fixing assembly
Cassette
Multifeeder pickup roller Photosensitive...
Service Manual - Page 127
... one time.)
2. ing the drive to move to rotate, copy paper is picked up from the control ring, allow- Outline The machine has three types of pickup rollers, i.e., cassette pickup roller, ...on the photosensitive drum. When the cassette pickup roller starts to the pickup gear assembly through the spring clutch.
CHAPTER 5 PICK-UP/FEEDING SYSTEM
B. CANON PC800s/900s REV.0 AUG. 1999 PRINTED ...
Service Manual - Page 128
... rollers
Pickup clutch SL5
Copy paper
Figure 5-104 (Single-feeder type)
5-4
COPYRIGHT © 1999 CANON INC. CHAPTER 5 PICK-UP/FEEDING SYSTEM
DC controller PCB
Spring
Gear
Cassette pickup solenoid drive signal (CPUSD*) Pickup clutch solenoid drive signal (PUSLD*)
M1
Arm
Pickup roller Pickup roller gear
When SL5 turns on, the spring causes
the pickup...
Service Manual - Page 130
... (SL4). DC controller PCB
Multifeeder pickup solenoid drive signal (MFSLD*)
Pickup clutch solenoid drive signal (PUSLD*)
M1
SL4 Cam gear
Paper guide plate SL1
Copy paper
Spring clutch Cam gear
Control ring Claw
Lifter
Paper guide plate
Multifeeder pickup roller
Toothless section
The cam gear makes a 180˚ turn (approximate), and stops at the same...
Service Manual - Page 133
... motor will reach the registration roller to move the copy paper to the paper detection signal from the pre-registration roller paper sensor. Controlling the Registration Roller The registration roller is controlled by a spring clutch, control ring, pre-registration roller paper
sensor (Q751), and registration clutch solenoid (SL2). Spring clutch Control ring
Registration roller
M1
Claw SL2...
Service Manual - Page 213
... computation, the ADF controller determines whether the size of originals that determines ADF operation sequence. Original
Original tray PI2 PI3
Registration paper detection signal (PDP2)
ADF controller PCB
Figure 8-107
Original Lengths and Operation Sequences
Length ~313cm 314cm~
Sequence For A4/LTR originals For LGL originals
Table 8-101
COPYRIGHT © 1999 CANON INC. CHAPTER 8 ADF...
Service Manual - Page 214
... operations takes place: 1 Preparing for PickUp Operation
When an original is placed on the original tray, i.e., the original placement sensor (PI3) turns ON, the pickup roller rotates counterclockwise and the paper guide holds the original in place.
1st original
Original tray PI3
Paper guide
Figure 8-108
2 Pickup Separation When the Copy Start key is pressed, the pickup roller 1 and 2 rotate...
Service Manual - Page 219
... IN JAPAN (IMPRIME AU JAPON)
8-13 Sequence of Operations (LGL, 2 originals)
Original set Copy Start key ON
Picking up /separating 1st original
Copying,picking Delivering 1st original/
up/separating
2nd original picking up /separating 2nd original
Copying Delivering
Pickup motor (M2)
Belt motor (M1) Original detection
sensor (PI3) Registration sensor (PI2) Delivery sensor (PI1)
Feeding...
Service Manual - Page 295
...LTR white copy paper, and draw two lines as indicated.
• The sheet will be used as a test sheet.
10mm
A4/LTR copy papper
Figure 11-244 2) Turn on the original tray....Adjusting the original leading edge stop position 3. Adjusting the rear/front original stop position 2.
ADF
1. Adjusting the Original Stop Position Adjust the original stop position in step 1) on the machine, and place...
Service Manual - Page 297
CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Adjusting the Rear/Front Original Stop Position You must first correct original skew before adjusting the rear/front original stop position.
1) Obtain a sheet of A4 or LTR white copy paper, and draw two lines as indicated. • The sheet will be used as a test...
Service Manual - Page 298
... 11-250 4) Press the Copy Start key to make a copy. 5) Check to make sure that the distance L3 on the original tray. CANON PC800s/900s REV....0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
11-33
CHAPTER 11 TROUBLESHOOTING
3) Turn on the machine, and place the test sheet prepared in step 1) on the copy...
Service Manual - Page 301
... make sure that the distance L4 on the original tray. L4 Copy image L4=10 ± 2.0mm
Figure 11-256
11-36
COPYRIGHT © 1999 CANON INC.
CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) CHAPTER 11 TROUBLESHOOTING
3) Turn on the machine, and place the test sheet prepared in...
Service Manual - Page 323
... horizontal fogging.
Check the scanning system. YES/NO YES
NO
YES YES NO
Action 1. Clean the surface of the scanner rail with alcohol.
Does the copy paper spring up or stop around the transfer assembly? Is the problem corrected? Is the problem found at different positions? Does it against one made in reverse...
Service Manual - Page 324
... the opening seal. CHAPTER 11 TROUBLESHOOTING
20 The copy has poor sharpness. (out-of-focus)
Cause Original
Lens
Mirror position Scanner Cartridge
Step 1 2
3 4 5
Checks Is the image also too light? Turn off the copyboard glass? Is the horizontal ratio in the machine, and close the machine. Check the cartridge. NO 1. CANON PC800s/900s REV...
Service Manual - Page 341
Does the registration roller operate normally?
NO See "Pickup fails" for attachment.
11-76
COPYRIGHT © 1999 CANON INC. NO Replace the sensor or the lever.
Is the copy paper curled or wavy? Try paper recommended by Canon. Does the vertical path roller paper sensor operate normally?
NO See "The registration roller fails to use recommended...
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