Field Service Ver. 1.0 Jun. 2008 17. Malfunction code
309
Troubleshooting
17.5.39 C3821: Fusing abnormally low temperature detection (heating side)
17.5.40 C3823: Fusing abnormally low temperature detection (pressurizing side)
17.5.41 C4151: Polygon motor rotation trouble (C)
17.5.42 C4152: Polygon motor rotation trouble (M)
17.5.43 C4153: Polygon motor rotation trouble (Y)
17.5.44 C4154: Polygon motor rotation trouble (K)
Relevant parts
Fusing unit DC power supply (DCPU)
Printer control board (PRCB)
Step Action
WIRING DIAGRAM
Control signal
Location (Electri-
cal component)
1
Check the fusing unit for correct installation
(whether it is secured in position).
——
2
Check the open/close operation of the
upper right door.
——
3
Check the fusing unit, PRCB and DCPU for
proper connection and correct or change
as necessary.
——
4 Change fusing unit — —
5 Change PRCB — —
6 Change DCPU — —
Relevant parts
PH unit PH relay board (REYBPH)
Printer control board (PRCB)
Step Action
WIRING DIAGRAM
Control signal
Location (Electri-
cal component)
1
Check the connector for proper connection
and correct as necessary.
——
2 Change PH unit — —
3 Change REYB/PH — —
4 Change PRCB — —
d-Color MF201
Y109660-1 Sevice Manual
d-Color MF201
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