Canon PC300 Service Manual page 49

Transformer
(1106)
3-22
DC voltage detection
COPYRIGHT © 1994 CANONINC.
Microprocessor
Transformer
(T104)
Q146
Photo-
sensitive
drum
Developing
cylinder
AE signal
Densit
control dial
[ VR601
AC bias timing pulse command
DC bias control command
DC controller/DC power supply PCB
Figure 3-19
Density
correction
switch
Control panel
PCB
CANON PC300320/325, FC210/230 REV.O JULY 1994 PRINTED IN JAPAN (IMPRIME AU JAPON)