C3723: Fusing Abnormally High Temperature Detection (Pressurizing Side); C3724: Fusing Abnormally High Temperature Detection (Soaking Side); C3822: Fusing Abnormally Low Temperature Detection; Edge Of The Heating Roller - Konica Minolta bizhub C650 Service Manual

16. Malfunction code
16.5.69

C3723: Fusing abnormally high temperature detection (pressurizing side)

16.5.70

C3724: Fusing abnormally high temperature detection (soaking side)

Fusing unit
Step
Check the fusing unit for correct installation
1
(whether it is secured in position).
Check the open/close operation of the
2
upper right door.
Check the fusing unit, IHPU, MFPB and
3 DCPU for proper connection and correct or
change as necessary.
4 Change fusing unit
5 Change IHPU
6 Change PRCB
7 Change DCPU
16.5.71

C3822: Fusing abnormally low temperature detection

(Edge of the heating roller)

16.5.72

C3825: Fusing abnormally low temperature detection (NC sensor)

Fusing unit
Step
Check the fusing unit for correct installation
1
(whether it is secured in position).
Check the open/close operation of the
2
upper right door.
Check the fusing unit, IHPU, PRCB and
3 REDB for proper connection and correct or
change as necessary.
4 Change fusing unit
5 Change IHPU
6 Change PRCB
7 Change REDB
660
Relevant parts
Action
Relevant parts
Action
Field Service Ver. 8.0 Jun. 2008
IH power supply (IHPU)
DC power supply (DCPU)
Printer control board (PRCB)
WIRING DIAGRAM
Control signal
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IH power supply (IHPU)
Relay drive board (REDB)
Printer control board (PRCB)
WIRING DIAGRAM
Control signal
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Location (Electri-
cal component)
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Location (Electri-
cal component)
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