Canon PC400 Service Manual - Page 60
B. Sequence of Image Formation Operations A4, 2 copies, B
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CHPTER 4 IMAGE FORMATION SYSTEM B. Sequence of Image Formation Operations (A4, 2 copies) Power switch ON Copy paper inserted (PC400/FC200) Copy Start key ON Copy paper inserted (PC400/FC200) CBRV Sequence Copyboard 1 Main (M1) motor 2 Scanning lamp (LA1-LA8) STBY INTR CBRVSTOP CBFW COPY CBRV CBFW LSTR STBY STOP 3 Primary AC bias 4 Primary DC bias 5 Transfer charging 6 Developing AC bias 7 Developing DC bias 4 sec 1.5 sec Scanning lamp Primary DC bias Developing DC bias : ON : -230V : -625V Transfer charging : -400V : -120V to -560V (variable according to density control dial/ lever, AE) Figure 4-401B : Cleaning mode : Measurement mode : Transfer 4-2 COPYRIGHT © 1998 CANON INC. CANON PC400/420/430,FC200/220 REV.0 JAN.1998 PRINTED IN JAPAN (IMPRIME AU JAPON)