Canon imageRUNNER 330 Service Manual page 473

CHAPTER 14 TROUBLESHOOTING
15 E191 (The serial communication between DC controller PCB and
composite power supply PCB has a fault.)
Cause Step
1
Connector 2
Harness 3
DC controller
PCB, Composite
power supply
PCB
14-74
COPYRIGHT © 1999 CANON INC.
Check
Turn off and then on the power.
Is the connection of J103 on the
DC controller PCB normal? Is the
connection of J209 on the
composite power supply normal?
Is there continuity on the harness
between DC controller PCB and
composite power supply PCB?
• J103-A1 to J209-A12
• J103-A3 to J209-A10
• J103-A6 to J209-A17
• J103-A7 to J209-A16
CANON imageRUNNER 400/330 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Yes/No Action
YES End.
NO Correct the connection.
NO Replace the harness.
YES Replace the DC
controller PCB and the
composite power supply
PCB.