Canon NP6251 Service Manual page 652

2. Separation/Feeding Assembly
Cause Step
Copy paper
Registration
roller
Registration
clutch
Transfer/
separation
charging
assembly
Copy paper
Separation claw
(cleaner
assembly)
Feeding belt 10
Feeding fan
COPYRIGHT © 1997 CANON INC.
Checks
1 Is the leading edge of copy paper
past the registration roller?
2 Is the coupling of the registration
roller engaged correctly?
3 Is the registration roller worn,
deformed, or soiled?
4 Is the roller retaining spring on
both ends of the registration roller
installed correctly?
5 Does the registration clutch
operating normally?
6 Is the transfer/separation charging
assembly set correctly?
7 Are there burrs on the paper guide
of the transfer/separation charging
assembly?
8 Try Canon-recommended paper.
Is the problem corrected?
9 Is the separation claw under the
cleaner assembly damaged?
Are the two feeding belts moving
normally?
CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 11 TROUBLESHOOTING
YES/NO Action
YES Go to step 5.
NO Set the fixing/feeding
unit correctly.
YES If dirt is found, clean it
with alcohol; if wear or
deformation is found,
replace the part.
NO Set it correctly.
YES Check the transfer guide
for foreign matter and
deformation.
NO Check the registration
clutch.
YES Check the
transfer/separation
charging assembly.
YES Remove the burrs.
YES Advise the user to use
recommended paper.
YES Replace the separation
claw.
NO Check the belt and the
pulley.
YES Check the feeding fan to
see if it is operating
normally.
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