Canon NP6218 Service Manual page 315

Cause Step
Toner level,
toner level
detection
mechanism
Composite 10
power supply
PCB
Drum cartridge
COPYRIGHT © 1997 CANON INC.
Checks
9 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?
CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 10 TROUBLESHOOTING
Results Action
YES 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.
YES Replace the composite
power supply PCB.
NO Replace the toner
cartridge.
10-51