Ac Power Is Absent - Canon NP6621 Service Handbook

15

AC power is absent.

Cause Step
When the power switch is turned ON,
E indication 1
is the E code indicated and is the
(E000,
power switch turned OFF within about
E001, E002,
2 sec?
E003, E004)
Power plug 2 Is the power plug connected to the
power outlet?
Are the front door and the delivery
Covers 3
cover closed securely?
Is the rated voltage present at the
Main power 4
power outlet?
supply
Is the rated voltage present between
5
J1-1 and J1-2? (J1 is the 2-pin con-
nector mounted on the power cord
connector.)
Is the circuit breaker on the noise filter
Noise filter
PCB (circuit 6 PCB OFF? (Use a meter.)
breaker 220/
240V)
Is the rated voltage present between
Noise filter
J13-1 and J13-2? (J13 is the relay
7
connector found between the noise
filter PCB and the door switch assem-
bly.)
Remove the door switch (DS1), and
Door switch
connect the probes of the meter to F1
(DS1) 8
and F2 or F3 and F4 on the door
switch faston, and press the actuator.
Is the resistance about 0 ý when the
actuator is pressed and × ý when
released?
Is the wiring from the door switch to
AC harness
the composite power supply PCB
9
normal?
Is there electrical continuity between
Connector
(J5, J307) 10 J5-1 on the composite power supply
PCB and J307-14 on the DC controller
PCB?
Replace the control panel. Is the
Control
panel 11
problem corrected?
DC control-
ler PCB
Checks
TROUBLESHOOTING MALFUNCTIONS
Yes/No Remedy
YES Disconnect the connector J4
of the fixing heater, and turn
ON the power switch while
holding down the service
mode switch to reset the
error code. Then, check
service mode 108 for an
error description. See the
appropriate section.
NO Connect the power plug.
NO Close the door and the
cover.
NO Advise the user that the
problem is not of the
machine's.
YES Go to step 7.
YES Remove the cause that blew
the fuse or that turned OFF
the circuit breaker; then,
replace the fuse or turn ON
the circuit breaker.
NO Replace the noise filter PCB.
NO Replace the door switch
(DS1).
NO Correct the wiring.
NO Check the connection of the
connector J307 on the DC
controller PCB; if normal,
replace the DC controller
PCB.
YES End.
NO Replace the DC controller
PCB.
4–9