Konica Minolta bizhub C200 Service Manual page 397

17. Malfunction code
17.5.12 C2552: Abnormally high toner density detected cyan TCR sensor
17.5.13 C2554: Abnormally high toner density detected magenta TCR sensor
17.5.14 C2556: Abnormally high toner density detected yellow TCR sensor
Imaging unit /C
Imaging unit /M
Imaging unit /Y
Toner cartridge /C
Toner cartridge /M
Toner cartridge /Y
Step
1 Reinstall imaging unit
2 Reinstall toner cartridge
3 Change imaging unit
4 Change PRCB
17.5.15 C2557: Abnormally low toner density detected black TCR sensor
Imaging unit /K
Toner cartridge /K
Step
M7 operation check
1
(At this time, IU must be non-installation.)
2 Reinstall imaging unit
3 Reinstall toner cartridge
4 Change imaging unit /K
5 Change PRCB.
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Relevant parts
Action
Relevant parts
Action
Field Service Ver. 2.0 Dec. 2008
Printer control board (PRCB)
WIRING DIAGRAM
Control signal
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—
—
—
Toner supply motor/CK (M7)
Printer control board (PRCB)
WIRING DIAGRAM
Control signal
PRCB CN30-1 to 4
—
—
—
—
Location (Electri-
cal component)
—
—
—
—
Location (Electri-
cal component)
C to D-24
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—
—
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