Service manual

COPYRIGHT © 1999 CANON INC. CANON GP160 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 5 LASER EXPOSURE SYSTEM
5-5
Figure 5-301
Drive
circuit
Logic circuit
Power
adjustment
circuit
Control
amplifier
circuit
Laser
element
Receiver
PD
LD
+5V
[1] ENBL*
[2] VDO*
[2] VDO
[3] 600*
CPU
(IC301)
Image
processor
PCB
DC controller PCB Laser driver PCB
[5] VDOUT*
BD sensor PCB
[4] BDI*
[1] ENBL* : Image formation enabling signal [2] VDO*/VDO : Video signal
[3] 600* : Laser beam changeover signal [4] BDI* : BD input signal
[5] VDOUT* : Video out signal
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