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COPYRIGHT
©
1997 CANON INC. CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
10-51
CHAPTER 10 TROUBLESHOOTING
Checks
Take out the developing assembly,
and shake it. Is the problem
corrected?
Is the reading in service mode
(105; primary current) 10 µA or
less?
Cause
Toner level,
toner level
detection
mechanism
Composite
power supply
PCB
Drum cartridge
Step
9
10
Results
YES
YES
NO
Action
The level of toner may
be too low or the toner
level detection
mechanism may be
faulty; advise the user to
replace the toner
cartridge.
Replace the composite
power supply PCB.
Replace the toner
cartridge.
Transfer