C4101: Polygon Motor Failure; C4721: Main Unit G/A Communication Failure; C5102: Main Motor Failure - Konica Minolta bizhub 250 Service Manual

19. Malfunction code
19.3.22

C4101: Polygon Motor Failure

PH Unit (PH)
Step
Check the PH connector for proper connection, and
1
correct as necessary.
2 Change PH
3 Change PWB-A
19.3.23

C4721: Main Unit G/A Communication Failure

Mechanical Control Board (PWB-A)
Step
Turn OFF the Main Power Switch, wait for 10 sec. or
1
more, and turn ON the Main Power Switch.
Check each control board and the PWB-A for proper
2
connection, and correct as necessary.
3 Change PWB-A
19.3.24

C5102: Main Motor Failure

Main Motor (M1)
Step
Check the M1 connector for proper connection, and
1
correct as necessary.
Check the M1 for proper drive coupling, and correct
2
as necessary.
Check the PWB-A connector for proper connection
3
and correct as necessary.
4 M1 operation check
5 Change PWB-A
6 Change PU1
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EDNord - Istedgade 37A - 9000 Aalborg - telefon 96333500
Relevant Electrical Parts
MFBS Board (MFBS)
Action
Relevant Electrical Parts
Action
Relevant Electrical Parts
Mechanical Control Board (PWB-A)
Power Supply Unit (PU1)
Action
Field Service Ver. 1.0 Aug. 2005
WIRING DIAGRAM
Control Signal
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WIRING DIAGRAM
Control Signal
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WIRING DIAGRAM
Control Signal
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PWB-A PJ28A-4 (REM)
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-
Location
(Electrical
Component)
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Location
(Electrical
Component)
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Location
(Electrical
Component)
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M-4
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