B. Feeding Faults; Double Feeding - Canon PC400 Service Handbook

CHAPTER 5 TROUBLESHOOTING PAPER FEED PROBLEMS

B. Feeding Faults

1. Double Feeding

Cause
Copy paper
Separation pad
Spring (pick-up guide
plate;
PC420/430/FC220)
2. Wrinkles
Cause
Pick-up assembly,
Registration roller
Copy paper
Inlet guide
Fixing assembly
5-4
Step Checks
1 Try copy paper of a type
recommended by Canon.
2 Check the movement of the pick-
up guide plate.
Is the movement smooth?
Step Checks
1 Switch the copier OFF while the
copy paper is moving through
the feeding assembly.
Is the paper wrinkled at the
time? Or, is it moving askew?
2 Try paper fresh out of package.
Is the problem corrected?
3 Try copy paper of a type
recommended by Canon.
4 Is the inlet guide soiled with
foreign matter or toner?
YES/NO Remedies
YES Advise the user to use
recommended paper.
YES Check the condition of the
separation pad.
NO Check the position of
spring.
YES/NO Remedies
YES Check the pick-up assem-
bly. Check the registration
roller.
YES The paper may be moist;
advise the user on the
correct method of storage.
Also, advise the user to
remove curling before
feeding paper for a second
time when making two-
sided/overlay copies.
YES Advise the user to use
recommended paper.
YES Clean it using solvent.
NO Check the fixing assembly.