C11C1: Punch Control Board Malfunctions - Konica Minolta bizhub C250 Service Manual

8. Trouble code
(4) Stapler/Crease Clock Sensor (Saddle Section)
Staple/Folding Motor Clock Sensor (PI14-FN)
Staple/Folding Motor (M7-FN)
Step
Check the motor and sensor connectors
1 for proper connection, and correct as
necessary.
Check the connector of motor for proper
2 drive coupling, and correct as neces-
sary.
3 PI14-FN I/O, sensor check
M7-FN operation check when the Main
4
Power Switch is turned OFF and ON.
5 PWB-A FN replacement
8.3.9

C11C1: Punch Control Board malfunctions

Finisher Control Board (PWB-A FN)
Punch Control Board (PWB-B PK)
Step
Turn OFF the Main Power Switch, wait
1 for 10 sec. or more, and turn ON the
Main Power Switch.
Check the connection condition
2 between the Punch Unit and PWB-A
FN.
Measure the voltage between CN14-5
3 (+) and CN14-3 (-) of the PWB-A FN. Is
the voltage 24VDC?
4 Initialize Punch Unit EEP-ROM.
5 PWB-B PK replacement
6 PWB-A FN replacement
64
Relevant electrical parts
Action
Relevant electrical parts
Action
Field Service Ver. 1.0 Jul. 2005
Finisher Control Board (PWB-A FN)
WIRING DIAGRAM
Control signal
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—
PWB-A FN CN9A FN-5 (ON)
PWB-A FN CN6A FN-1 to 2
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WIRING DIAGRAM
Control signal
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Location
(Electrical
components)
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—
FS-603 G-8
FS-603 B-3
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Location
(Electrical
components)
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