Canon GP605 Service Manual page 696

CHAPTER 13 TROUBLESHOOTING
64 The DC power supply fails to operate 2.
Cause Step
Connector
13-104
COPYRIGHT © 1999 CANON INC.
1 Is the main power lamp on?
2 Is the connection of the connectors of the
following PCBs normal?
• Relay PCB
J1718
• DC controller PCB
J501, J525
• MFC PCB
J1402, J1403, J1407
• Image Processor PCB
J1101, J1102, J1103
3 Turn off the main power such. Is there
DC power when the power switch is
turned on in about 3 min and the control
panel power switch is turned on?
Checks
CANON GP605/605V REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Yes/No Action
NO See "The DC power
supply fails to operate
1."
NO Correct the connection.
YES End.
NO Replace the DC power
supply PCB.