Canon PC980 Service Manual - Page 97
Timing Chart for the Image Formation System, Basic Sequence of Operations Direct, 2 copies, continuous
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CHAPTER 4 IMAGE FORMATION SYSTEM B. Timing Chart for the Image Formation System Basic Sequence of Operations (Direct, 2 copies, continuous) Copy Start key ON STBY INTR SCFW SCRV SCFW SCRV LSTR STBY Main motor (M1) Scanning lamp (LA1) Scanner Primary AC bias Primary DC bias Developing AC bias Developing DC bias Transfer bias Transfer cleaning bias forward Reverse -400V -625V 0.5sec.(approx.) 0.6sec.(approx.) -500V Transfer reference bias (ATVC) 0.6sec.(approx.) Static eliminator bias 3200V Pre-registration roller paper sensor (Q751) Figure 4-102 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 4-3
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CHAPTER 4 IMAGE FORMATION SYSTEM
COPYRIGHT
©
1999
CANON INC.
CANON
PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
4-3
Figure 4-102
Copy Start key
ON
STBY
INTR
SCFW
forward
SCFW
SCRV
Reverse
-625V
3200V
-400V
0.5sec.(approx.)
LSTR
STBY
Main motor (M1)
Scanning lamp (LA1)
Primary AC bias
Transfer bias
Transfer cleaning bias
Transfer reference
bias (ATVC)
Static eliminator bias
Pre-registration roller
paper sensor (Q751)
Primary DC bias
Developing AC bias
Developing DC bias
Scanner
SCRV
-500V
0.6sec.(approx.)
0.6sec.(approx.)
B.
Timing Chart for the Image Formation System
Basic Sequence of Operations (Direct, 2 copies, continuous)