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 C250 Service Manual

16. Malfunction code
16.5.11

C2551: Abnormally low toner density detected Cyan TCR Sensor

16.5.12

C2553: Abnormally low toner density detected Magenta TCR Sensor

16.5.13

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
Perform image troubleshooting procedure if
1
image density is low.
Clean the TCR Sensor window on the
2
underside of the Imaging Unit if dirty
M6, M7 operation check
3
4 Reinstall Imaging Unit
5 Change Imaging Unit
6 Change PWB-M
7 Change PWB-MFP.
16.5.14

C2552: Abnormally high toner density detected Cyan TCR Sensor

16.5.15

C2554: Abnormally high toner density detected Magenta TCR Sensor

16.5.16

C2556: Abnormally high toner density detected Yellow TCR Sensor

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 Reinstall Imaging Unit
3 Change Imaging Unit
4 Change PWB-M
5 Change PWB-MFP
360
Relevant Electrical Parts
Action
Relevant Electrical Parts
Action
Field Service Ver. 1.0 Jul. 2005
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)
—
—
—
—
Mechanical Control Board (PWB-M)
MFP Control Board (PWB-MFP)
WIRING DIAGRAM
Control Signal
—
—
—
—
—
Location (Electri-
cal Component)
—
—
C-20
C-21
—
—
—
—
Location (Electri-
cal Component)
—
—
—
—
—