C2558: Abnormally High Toner Density Detected Black Tcr Sensor; C2559: Cyan Tcr Sensor Adjustment Failure; C255A: Magenta Tcr Sensor Adjustment Failure; C255B: Yellow Tcr Sensor Adjustment Failure - Konica Minolta bizhub C650 Service Manual

Field Service Ver. 8.0 Jun. 2008
16.5.41

C2558: Abnormally high toner density detected black TCR sensor

Imaging unit /K
Toner cartridge /K
Step
Correct the TCR connection on the
1
underside of the imaging unit if faulty.
2 Reinstall imaging unit
3 Reinstall toner cartridge
4 Change imaging unit
5 Change PRCB
6 Change sub hopper unit
16.5.42

C2559: Cyan TCR sensor adjustment failure

16.5.43

C255A: Magenta TCR sensor adjustment failure

16.5.44

C255B: Yellow TCR sensor adjustment failure

Imaging unit /C
Imaging unit /M
Imaging unit /Y
Step
Clean the TCR sensor window on the
1
underside of the imaging unit if dirty
2 M9, M10, M11 operation check
3 Reinstall imaging unit
4 Change imaging unit
5 Change PRCB
Relevant parts
Action
Relevant parts
Action
Sub hopper unit
Printer control board (PRCB)
WIRING DIAGRAM
Control signal
—
—
—
—
—
—
Toner supply motor/Y (M9)
Toner supply motor/M (M10)
Toner supply motor/C (M11)
Printer control board (PRCB)
WIRING DIAGRAM
Control signal
—
M9: PRCB CN16PRCB-1 to 4
M10: PRCB CN16PRCB-5 to 8
M11: PRCB CN16PRCB-9 to 12
—
—
—
16. Malfunction code
Location (Electri-
cal component)
—
—
—
—
—
—
Location (Electri-
cal component)
—
C-22 to 23
—
—
—
651