C2451: Release New Transfer Belt Unit; C2551: Abnormally Low Toner Density Detected Cyan Tcr Sensor; C2553: Abnormally Low Toner Density Detected Magenta Tcr Sensor; C2555: Abnormally Low Toner Density Detected Yellow Tcr Sensor - Konica Minolta bizhub C200 Service Manual

Field Service Ver. 2.0 Dec. 2008
17.5.8

C2451: Release new transfer belt unit

Transfer belt unit
Step
1 Reinstall unit
Check there is a short circuit in the fuse of
2
the transfer belt unit.
Check the PRCB connector for proper
3
connection and correct as necessary.
4 Change PRCB
17.5.9

C2551: Abnormally low toner density detected cyan TCR sensor

17.5.10

C2553: Abnormally low toner density detected magenta TCR sensor

17.5.11

C2555: Abnormally low 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
M6 operation check
3
(At this time, IU must be non-installation.)
M7 operation check
4
(At this time, IU must be non-installation.)
5 Change imaging unit
6 Change PRCB.
Relevant parts
Action
Relevant parts
Action
Printer control board (PRCB)
WIRING DIAGRAM
Control signal
—
—
—
—
Toner supply motor/CK (M7)
Toner supply motor/YM (M6)
Printer control board (PRCB)
WIRING DIAGRAM
Control signal
—
—
PRCB CN30-5 to 8
PRCB CN30-1 to 4
—
—
17. Malfunction code
Location (Electri-
cal component)
—
—
—
—
Location (Electri-
cal component)
—
—
C to D-24
C to D-24
—
—
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