Canon GP335 Service Manual page 500

CHAPTER 14 TROUBLESHOOTING
21 E261 (The zero-cross signal has a fault.)
Cause
Connector
Harness
Harness
DC controller
PCB
Composite power
supply PCB
14-82
Step Check
1 Turn off and then on the main
power. Is the problem corrected?
2 Is the connection between the
connector J103 on the DC
controller PCB and the connector
J209 on the composite power
supply PCB good?
Is the continuity between J103-A8
(PZC) and J209-A5 good? (zero-
cross signal)
Is the continuity on the harness
between the DC controller PCB and
the image processor PCB good?
• J113-B11 and J714-B10
Replace the DC controller PCB. Is
the problem corrected?
COPYRIGHT © 1999 CANON INC. CANON 405/335 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Yes/No Action
YES End.
NO Correct the connection.
NO Replace the harness.
NO Replace the harness.
YES End.
NO Replace the composite
power supply PCB.