COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
11-74
CHAPTER 11 TROUBLESHOOTING
11-74
25 The "Add Paper" message fails to turn off.
YES/NO
NO
NO
NO
NO
YES
NO
Cause
Cassette
Lens cable,
Pulley, Rail
DC power
supply
Vertical path
roller paper
sensor (PS4)
Control
panel PCB
DC control-
ler PCB
Step
1
2
3
4
5
Checks
Is the cassette set correctly?
Are the lens cable, pulley, and rail
normal?
Set the meter range to 30 VDC, and
connect the meter probes to J202-2 (+)
and -1 (-) on the composite power
PCB. Is the meter reading about 24 V?
Is the vertical path roller paper sensor
(PS4) normal? (For instructions on
how to check the photointerrupters,
see p. 11-47.)
Replace the control panel PCB. Is the
problem corrected?
Action
Set the cassette cor-
rectly.
Check the lens cable,
pulley, and rail; as
necessary, clean the
cable and adjust its
tension.
See “The DC power
fails to turn on.”
Check the wiring from
J132 on the DC
controller PCB to PS4;
if normal, replace the
PS4.
End.
Replace the DC
controller PCB.
26 The "Jam" message fails to turn off.
YES/NO
YES
NO
YES
Cause
Jam paper
Sensor
DC control-
ler PCB
Step
1
2
Checks
Is the jam paper near any of the
following sensors?
• Vertical path roller paper sensor
(PS4)
• Single-feeder paper sensor (PS5)
• Pre-registration roller paper sensor
(Q751)
• Delivery sensor (PS3)
Is the sensor checked in step 1 nor-
mal? (For instructions on how to check
the photointerrupers, see p. 11-47.)
Action
Remove the jam
paper.
Check the wiring from
the DC controller PCB
to each sensor; if
normal, replace the
sensor in question.
Replace the DC
controller PCB.
Содержание PC800 Series
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