Canon GP405 Service Manual page 489

Check wiring
(to make sure that
wiring is not to the
light-receiving face).
Check continuity.
COPYRIGHT © 1999 CANON INC. CANON 405/335 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
BD PCB
J510
4 3 2 1
Check for
disconnection.
1 2 3 4
J708
Image processor PCB
Check for
disconnection.
Check continuity.
Figure 14-405 E100
CHAPTER 14 TROUBLESHOOTING
Laser driver PCB
J706
Check continuity.
J301
CCD PCB
J500
A16 B16
Check for
disconnection.
A16 B16
J717
14-71