C3421: Fusing Heaters Trouble (Heating Side); C3423: Fusing Heaters Trouble (Pressurizing Side); C3721: Fusing Abnormally High Temperature Detection (Heating Side); C3723: Fusing Abnormally High Temperature Detection (Pressurizing Side) - Konica Minolta bizhub C200 Service Manual

17. Malfunction code
17.5.35

C3421: Fusing heaters trouble (heating side)

17.5.36

C3423: Fusing heaters trouble (pressurizing 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, PRCB and DCPU for
3 proper connection and correct or change
as necessary.
4 Change fusing unit
5 Change PRCB
6 Change DCPU
17.5.37

C3721: Fusing abnormally high temperature detection (heating side)

17.5.38

C3723: Fusing abnormally high temperature detection (pressurizing 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, PRCB and DCPU for
3 proper connection and correct or change
as necessary.
4 Change fusing unit
5 Change PRCB
6 Change DCPU
362
Relevant parts
Action
Relevant parts
Action
Field Service Ver. 2.0 Dec. 2008
DC power supply (DCPU)
Printer control board (PRCB)
WIRING DIAGRAM
Control signal
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DC power supply (DCPU)
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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