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COPYRIGHT
©
1999 CANON INC. CANON imageRUNNER 600 REV.1 JAN. 2000 PRINTED IN U.S.A.
13-93
CHAPTER 13 TROUBLESHOOTING
29 E110
Step
1
2
3
Action
Connect the connector
securely.
Connect the connector
securely.
End.
Replace the DC
controller PCB.
Checks
Is the connector (J762) on the laser
scanner motor driver PCB connected
securely?
Is the connector (J503) on the DC
controller PCB connected securely?
Replace the laser scanner motor (M4). Is
the problem corrected?
Cause
Connector
Connector
Laser scanner
motor (M4)
DC controller
PCB
28 E102
Step
1
2
Action
Check the connection
from the DC power
supply PCB to the
relay PCB; if normal,
replace the relay PCB.
Replace the laser unit.
Correct the connection.
Checks
Is the voltage of the following terminals
on the relay PCB as indicated?
J1714-1: 5 V
J1714-3: 8 V
J1714-5: -8 V
Is the connection from the relay PCB to
the laser driver PCB normal?
Yes/No
NO
YES
NO
Cause
Relay PCB
Laser unit
30 E111
Step
1
2
3
Action
Remove the foreign
matter.
Connect the connector
securely.
End.
Replace the DC
controller PCB.
Checks
Is there foreign matter that hinders the
rotation of the laser scanner fan?
Is the connector (J504) on the DC
controller PCB connected correctly?
Replace the laser scanner fan (FM14). Is
the problem corrected?
Yes/No
YES
NO
NO
YES
Cause
Foreign matter
Connector
Laser scanner
fan (FM14)
DC controller
PCB
Yes/No
NO
NO
NO
YES