Konica Minolta bizhub C650 Service Manual page 714

Field Service Ver. 8.0 Jun. 2008
16.5.65 C3461: Release new fusing unit
Fusing unit
Step
Check the fusing unit for correct installation
1
(whether it is secured in position).
Check the fusing unit, PRCB for proper
2 connection and correct or change as
necessary.
3 Reinstall fusing unit
4 Change fusing unit
5 Change PRCB
16.5.66 C3721: Fusing abnormally high temperature detection
(Center of the heating roller)
16.5.67 C3722: Fusing abnormally high temperature detection
(Edge of the heating roller)
16.5.68 C3725: Fusing abnormally high 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, MFPB 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
Relevant parts
Action
Relevant parts
Action
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
—
—
—
—
—
—
—
16. Malfunction code
Location (Electri-
cal component)
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—
—
—
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Location (Electri-
cal component)
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—
—
—
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659