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7. TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
COPYRIGHT © 2001 CANON INC. CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)
9. EPC (photosensitive drum potential measurement)
<M>
<S>
<R>
<P>
<F>
FUNC
DISP
ADJUST
COUNTER
OPTION
TEST
EPC
XX
XX
V00-300V-Y
VFF-700V-Y
XX
XX
V00-300V-M
VFF-700V-M
XX
XX
V00-300V-C
VFF-700V-C
XX
XX
XX
V00-300V-K
XX
V00-700V-Y
XX
V00-700V-M
XX
V00-700V-C
V00-700V-K
XX
VFF-300V-Y
XX
VFF-300V-M
XX
VFF-300V-C
XX
VFF-300V-K
VFF-700V-K
V
EPC
1/2
<M>
<S>
<R>
<P>
<F>
FUNC
DISP
OFFSET-Y
ADJUST
COUNTER
EPC-Y
POTOFSTY
OPTION
TEST
xxx
xx
xxx
OFFSET-M
EPC-M
POTOFSTM
xxx
xx
xxx
OFFSET-C
EPC-C
POTOFSTC
xxx
xx
xxx
OFFSET-K
EPC-K
POTOFSTK
xxx
xx
xxx
EPC
READY
2/2
XX
Item
EPC
POTOFSTY/M/C/K
OFFSET
V00-300V
V00-700V
VFF-300V
VFF-700V
Description
Executes potential measurement on the photo-
sensitive drum.
Indicates the offset value for the potential sen-
sor.
Executes offset adjustment on the potential
measurement circuit of the photosensitive drum.
Indicates the photosensitive drum surface
potential when the grid bias potential of the
primary charging assembly is –300 V and the
laser output is V00.
Indicates the photosensitive drum surface
potential when the grid bias potential of the
primary charging assembly is –700 V and the
laser output is V00.
Indicates the photosensitive drum surface
potential when the grid bias potential of the
primary charging assembly is –300 V and the
laser output is VFF.
Indicates the photosensitive drum surface
potential when the grid bias potential of the
primary charging assembly is –700 V and the
laser output is VFF.
Remarks
The potential measure-
ment data is used for the
next copying run.
The potential measure-
ment data is used for the
next copying run.
Approximate value:
250~350
Approximate value:
650~750
Approximate value:
10~150
Approximate value:
50~250
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