The Add Toner Indicator Fails To Turn On; The Add Toner Indicator Fails To Turn Off - Canon NP6260 Service Manual

CHAPTER 11 TROUBLESHOOTING

49. The Add Toner indicator fails to turn on.

Cause Step
Toner sensor
(hopper
assembly),
DC controller
PCB
DC controller
PCB

50. The Add Toner indicator fails to turn off.

Cause Step
Toner
Toner sensor
(TS1)
DC controller
PCB/Control
panel
11-112
COPYRIGHT © 1997 CANON INC.
Checks
1 Is there toner in the hopper
assembly?
2 Select 'P002' in service mode
( ). Move the toner around
2
the toner sensor (TS1) to expose
the sensor. Does bit 10 on the
message display indicate '0' (toner
absent)?
3 Open the upper cover of the
developing assembly. Is the toner
level sensor blocked by toner?
Checks
1 Is there toner at the rear of the
hopper assembly?
2 Select 'P002' in service mode
( ). At this time, does bit 10
2
on the message display indicate
'0' (toner absent)?
CANON NP6560/NP6360/NP6260 REV. 0 NOV. 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
YES/NO Action
YES Go to step 3.
NO 1. Replace the toner
sensor (TS1).
2. Replace the DC con-
troller PCB.
YES 1. Replace the DC
controller PCB.
2. Replace the control
panel.
YES End.
YES/NO Action
NO The level of toner inside
the hopper is not
enough. Supply toner.
YES Replace the toner sen-
sor (TS1) of the hopper
assembly.
NO 1. Replace the DC con-
troller PCB.
2. Replace the control
panel.