C2552: Abnormally High Toner Density Detected Cyan Tcr Sensor - Konica Minolta bizhub C450 Service Manual

Field Service Ver. 1.0 Mar. 2005
16.6.27

C2552: Abnormally high toner density detected Cyan TCR Sensor

16.6.28 C2554: Abnormally high toner density detected Magenta TCR Sensor
16.6.29 C2556: Abnormally high toner density detected Yellow TCR Sensor
TCR Sensor/C (PWB-N3)
TCR Sensor/M (PWB-N2)
TCR Sensor/Y (PWB-N1)
Step
Clean the TCR Sensor window on the underside
1
of the Imaging Unit if dirty
2 Clean the TCR Sensor LED if dirty
Correct the contact and/or WIRING of the TCR
3
Sensor if faulty.
4 Change TCR Sensor C/M/Y.
5 Change Imaging Unit.
6 Change PWB-MC
7 Change PWB-MFPC.
16.6.30 C2557: Abnormally low toner density detected Black TCR Sensor
TCR Sensor/K (UN10)
Toner Supply Motor C/K (M3)
Step
Perform image troubleshooting procedure if
1
image density is low.
2 M3 operation check
3 Change Imaging Unit.
4 Change PWB-MC
5 Change PWB-MFPC.
Relevant Electrical Parts
Control Board (PWB-MC)
MFP Control Board (PWB-MFPC)
Imaging Unit /C
Imaging Unit /M
Imaging Unit /Y
Action
Relevant Electrical Parts
Control Board (PWB-MC)
MFP Control Board (PWB-MFPC)
Action
16. Malfunction code
WIRING DIAGRAM
Control Signal
—
—
—
—
—
—
—
WIRING DIAGRAM
Control Signal
—
PWB-MC PJ8MC-1 to 4
—
—
—
Location
(Electrical
Component)
—
—
—
—
—
—
—
Location
(Electrical
Component)
—
C to D-14
—
—
—
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