Ac Power Is Absent - Canon NP6330 Service Manual

CHAPTER 11 TROUBLESHOOTING
23

AC power is absent.

Cause Step
Error code 1
Power plug 2
Covers 3
Main power 4
supply
Circuit breaker 5
(CB1)
6
Power cord, 7
Noise filter
(NF1)
Door switch 8
(DSW1)
Power switch 9
(SW1)
Wiring
11-86
Checks
Does an error code turn on when
the power switch is turned on, and
does the power switch turn off in
20 sec?
Is the power plug connected
securely?
Are the front door and the delivery
cover closed securely?
Is the rated voltage present at the
power outlet?
Measure the voltage between both
terminals of the circuit breaker. Is
it 0 ?
Is the rated voltage present
between J2-1 and J2-2? (J2 is
located near the power supply
cord mount.)
Replace the power cord or the line
filter. Is AC power present?
Remove the door switch, and
connect the probes of the meter to
the door switch fastons F3 and F5
or F4 and F6. Is the resistance
about 0 when the actuator is
pressed and
Connect the probes of the meter
to both terminals (fastons) of the
power switch (SW1). Is it about 0
when the switch is turned ON
and about when OFF?
COPYRIGHT © 1997 CANON INC.
YES/NO
YES
NO
NO
NO
YES
NO
YES
NO
when released?
NO
YES
CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
Action
See the descriptions for
the corresponding error
code.
Connect the power plug.
Close the door or the
cover.
Advise the user that the
problem is not of the
copier.
Press the button on the
circuit breaker, and
check for electrical conti-
nuity; if not 0 , replace
the circuit breaker.
Go to step 8.
End.
Replace the door switch.
Replace the power
switch.
Check the wiring of the
AC power line and con-
nectors for poor contact.