E191; Composite Power Supply Pcb - Canon GP215 Service Handbook

TROUBLESHOOTING MALFUNCTIONS
15 E191 (error in serial communication between DC controller PCB and com-
posite power supply PCB)
Cause Step
1
Connector 2
(poor contact)
DC controller
PCB,
Composite
power supply
PCB
4–10
Checks
Turn OFF/ON the main power.
Is the problem corrected?
Is the connection between the
connector J102 on the DC con-
troller PCB and the connector
J209 on the composite power
supply PCB normal?
Yes/No
YES End.
NO Re-connect them.
YES Try replacing the following
parts:
• DC controller PCB
• Composite power supply
PCB
Action