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; C2552: Abnormally High Toner Density Detected Cyan Tcr Sensor - Konica Minolta bizhub C250P Service Manual

23. Malfunction code
23.5.11

C2551: Abnormally low toner density detected Cyan TCR Sensor

23.5.12

C2553: Abnormally low toner density detected Magenta TCR Sensor

23.5.13

C2555: Abnormally low toner density detected Yellow TCR Sensor

Imaging Unit /C
Imaging Unit /M
Imaging Unit /Y
Toner Supply Motor C/K (M6)
Toner Supply Motor Y/M (M7)
Step
1 Perform image troubleshooting procedure if image density is low.
2 Clean the TCR Sensor window on the underside of the Imaging Unit if dirty
3 M6, M7 operation check
4 Reinstall Imaging Unit
5 Change Imaging Unit
6 Change PWB-M
7 Change PWB-MFP.
23.5.14

C2552: Abnormally high toner density detected Cyan TCR Sensor

23.5.15

C2554: Abnormally high toner density detected Magenta TCR Sensor

23.5.16

C2556: Abnormally high toner density detected Yellow TCR Sensor

Imaging Unit /C
Imaging Unit /M
Imaging Unit /Y
Step
1 Clean the TCR Sensor window on the underside of the Imaging Unit if dirty
2 Reinstall Imaging Unit
3 Change Imaging Unit
4 Change PWB-M
5 Change PWB-MFP
328
Relevant Electrical Parts
Mechanical Control Board (PWB-M)
MFP Control Board (PWB-MFP)
Action
Relevant Electrical Parts
Mechanical Control Board (PWB-M)
MFP Control Board (PWB-MFP)
Action
Field Service Ver. 2.0 Mar. 2006