E633 - Canon 1000 Service Manual

7. TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
32

E633

Cause Step
Connector,
Wiring
Projector control-
ler PCB
Connector,
Wiring
DC power supply
Overcurrent
Reader unit
controller PCB
SSR1
Projector control-
ler PCB
Projector control-
ler PCB
Reader unit
controller PCB
7-122
COPYRIGHT © 2001 CANON INC.
Checks
1 Are the connection and the wiring of
the following connector normal?
Projector Controller PCB: J103
2 Set the meter to the 12VDC range,
and measure the voltage between
J107-1 (+; 5 V) and J107-2 (–; GND)
on the projector controller PCB. Does
it change from about 0 V to about 5 V
when projector mode starts?
3 Are the connection and wiring
between the following connectors
normal?
J107 on the projector controller PC
and J203 on the DC power supply
J102 on the projector controller PCB
and SSR1
4 Set the meter to the 300VAC range,
and measure the voltage between
J201-1 and -3 of the DC power
supply. Is the rated AC voltage
present when projector mode starts?
5 Press the circuit breaker. Is it reset?
6 Set the meter to the 30VDC range,
and measure the voltage between
J103-5 (+; 5 V) and J103-6 (–;
POWON*) on the projector controller
PCB. Does it change from about 0 V
to about 5 V when projector mode
starts?
7 As in step 6, measure the voltage
between J102-1 (+; 5 V) and J102-2
(–; POWON*). Does it change from
about 0 V to about 5 V?
8 Replace the projector controller PCB.
Is the problem corrected?
Yes/No
CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)
Action
NO Re-connect it.
YES Go to step 8.
NO Re-connect it.
YES Replace the DC power
supply.
YES Be sure to find out the
cause of the overcurrent.
NO Replace the reader unit
controller PCB.
YES Replace SSR1.
NO Replace the projector
controller PCB.
YES End.
NO Replace the reader
controller PCB.