Canon PC400 Service Manual - Page 63
C, DC bias high output
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Transformer (T106) DC bias control circuit DC current detection CHPTER 4 IMAGE FORMATION SYSTEM Amplifier Transformer (T103) J6 Primary charging roller Photosensitive drum Oscillation control circuit Oscillation circuit Current detection AC bias ON command (HVPAC) DC bias ON command (HVPDC) DC bias high output command (HVPHO) Microprocessor DC controller/DC power supply PCB Figure 4-101C COPYRIGHT © 1998 CANON INC. CANON PC400/420/430,FC200/220 REV.0 JAN.1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 4-5
COPYRIGHT © 1998 CANON INC.
CANON PC400/420/430,FC200/220 REV.0 JAN.1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHPTER 4 IMAGE FORMATION SYSTEM
4-5
Primary
charging
roller
Photo-
sensitive
drum
Amplifier
Microprocessor
DC bias
control circuit
Transformer
(T103)
Transformer
(T106)
DC current detection
DC bias high output
command (HVPHO)
DC bias ON command
(HVPDC)
AC bias ON command
(HVPAC)
Current detection
J6
DC controller/DC power supply PCB
Oscillation
control circuit
Oscillation
circuit
Figure 4-101C