The Counter Fails To Operate - Canon 1000 Service Manual

48

The counter fails to operate.

Cause Step
Counter
DC controller
PCB
Counter
COPYRIGHT © 2001 CANON INC.
Checks
1 Turn OFF the power switch, and
disconnect the connector J2212
from the DC controller. Set the
meter to the ×1KΩ range, and
measure the resistance of the
following counters:
Counter
CNT1 J2212B-8
CNT2 J2212B-9
CNT3 J2212B-10
CNT4 J2212B-11
CNT5 J2212B-12
CNT6 J2212B-13
2 Connect the connector J2212, and
set the meter to the 24VDC range.
Does the voltage of the following
connectors on the DC controller
PCB change from about 24 V to
about 0 V and then to 24 V when the
Start key is pressed? Be sure to
select a copying mode appropriate
to the counter operation:
Counter
CNT1 J2212B-8
CNT2 J2212B-9
CNT3 J2212B-10
CNT4 J2212B-11
CNT5 J2212B-12
CNT6 J2212B-13
CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)
7. TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
+ –
J2212B-7
J2212B-7
J2212B-7
J2212B-7
J2212B-7
J2212B-7
+ –
J2212B-7
J2212B-7
J2212B-7
J2212B-7
J2212B-7
J2212B-7
Yes/No Action
NO Check the wiring from
J2212 to the counter; if
normal, replace the
counter.
NO Replace the DC controller
PCB.
YES Replace the counter.
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