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COPYRIGHT
©
1999 CANON INC. CANON imageRUNNER 600 REV.1 JAN. 2000 PRINTED IN U.S.A.
13-87
CHAPTER 13 TROUBLESHOOTING
13 E020
Step
1
2
3
Action
Check the rotation of
the toner feeding screw
inside the developing
assembly; if normal,
replace the toner sensor
(TS3).
Check the connection;
if normal, replace the
clutch.
Check the connection;
if normal, replace the
motor.
Check the following:
• magnet roller inside
the hopper for
rotation.
• path from the hopper
to the developing
assembly for
clogging by toner.
Checks
Take out the developing assembly, and
detach the upper cover of the developing
assembly. Is there toner inside the
developing assembly?
Select COPIER>FUNCTION>PART-
CHK in service mode, and check the
operation of the hopper drive clutch
(CL1). Does the clutch operate?
Check the operation of the hopper motor
(M18) using MTR. Does the motor
operate?
Yes/No
YES
NO
NO
YES
Cause
Toner feed
screw, Toner
sensor (TS3)
Hopper drive
clutch (CL1)
14 E025
Step
1
2
Action
Connect the connector
securely.
Correct the drive
system.
Replace the toner
feeder motor inside the
cartridge.
Checks
Is the connector (J512) on the DC
controller PCB connected securely?
Does the drive system of the toner
feeding mechanism inside the cartridge
operate smoothly?
Yes/No
YES
NO
YES
Cause
Connector
Drive system
Toner feeder
motor (M6;
inside cartridge)