The Add Toner Indicator Fails To Turn Off - Canon NP6330 Service Manual

41

The Add Toner indicator fails to turn off.

Cause Step
Toner sensor
(TS1)
DC controller
PCB
Screw, gear,
stirring rod
COPYRIGHT © 1997 CANON INC.
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Checks
1 Is toner present around the toner
sensor (TS1) at the front of the
developing assembly?
2 Replace the toner sensor. Is the
problem corrected?
3 Execute '409' in service mode [4].
Is the stirring rod inside the
hopper rotating normally while the
hopper motor is rotating?
CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 11 TROUBLESHOOTING
YES/N Action
NO Go to step 3.
YES End.
NO Check the wiring from
the DC controller PCB to
the toner sensor; if
normal, replace the DC
controller PCB.
NO Check the screw, gear,
and stirring rod to see if
they are installed
properly.
YES Check the shutter
assembly of the toner
supply mouth between
the hopper and the
developing assembly.
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