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 C250 Service Manual

16. Malfunction code
16.5.18

C2558: Abnormally high toner density detected Black TCR Sensor

Imaging Unit /K
Step
Correct the TCR connection on the
1
underside of the Imaging Unit if faulty.
2 Reinstall Imaging Unit
3 Change Imaging Unit
4 Change PWB-M
5 Change PWB-MFP
16.5.19

C2559: Cyan TCR Sensor adjustment failure

16.5.20

C255A: Magenta TCR Sensor adjustment failure

16.5.21

C255B: Yellow TCR Sensor adjustment failure

Imaging Unit /C
Imaging Unit /M
Imaging Unit /Y
Toner Supply Motor Y/M (M6)
Toner Supply Motor C/K (M7)
Step
Clean the TCR Sensor window on the
1
underside of the Imaging Unit if dirty
M6, M7 operation check
2
3 Reinstall Imaging Unit
4 Change Imaging Unit
5 Change PWB-M
6 Change PWB-MFP
448
Relevant Electrical Parts
Action
Relevant Electrical Parts
Action
Field Service Ver. 3.0 Aug. 2006
Mechanical Control Board (PWB-M)
MFP Control Board (PWB-MFP)
WIRING DIAGRAM
Control Signal
—
—
—
—
—
Mechanical Control Board (PWB-M)
MFP Control Board (PWB-MFP)
WIRING DIAGRAM
Control Signal
—
PWB-M CNDM2-10 to 13 (M6)
PWB-M CNDM3-10 to 13 (M7)
—
—
—
—
Location (Electri-
cal Component)
—
—
—
—
—
Location (Electri-
cal Component)
—
C-20
C-21
—
—
—
—