Canon GP605 Service Manual page 677

8 E012
Cause Step
Connector
DC controller
PCB
Relay PCB
Drum motor
(M0)
9 E013
Cause Step
Waste toner
feeding screw
MSW2
DC controller
PCB
COPYRIGHT © 1999 CANON INC.
1 Are the connectors (J601, J602) of the
drum motor connected securely?
2 Measure the voltage of the connectors of
the drum motor when the power switch is
turned on. Is it as follows?
• J602-2: 5 V
• J602-3: 5 V
3 Measure the voltage of the connector of
the drum motor when the power switch is
turned on. Is it as follows?
• J601-1: 38 V
1 Is the waste toner feeding screw drive
gear pushing against the waste toner
feeding screw lock detecting switch
(MSW2)?
2 Select COPIER>I/O>IP in service mode.
Is bit 2 of P002 '1' ?
CANON GP605/605V REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 13 TROUBLESHOOTING
Checks
Checks
Yes/No Action
NO Connect the connectors
securely.
NO Check the connection
of the cable up to the
DC controller PCB; if
normal, replace the DC
controller PCB.
NO Check the connection
of the cable up to the
relay PCB; if normal,
replace the relay PCB.
YES Replace the drum
motor.
Yes/No Action
NO It is most likely that the
feeding screw inside
the waste toner pipe is
prevented from rotating
for some reason.
Remove the waste
toner pipe, and try
turning the screw by
hand. If it can be
turned easily, mount
and check once again.
Otherwise, replace the
waste toner pipe, and
remove the cause.
YES Replace MSW2.
NO Replace the DC
controller PCB.
13-85