C2558: Abnormally High Toner Density Detected Black Tcr Sensor - Konica Minolta bizhub C450 Service Manual

16. Malfunction code
16.6.31

C2558: Abnormally high toner density detected Black TCR Sensor

Imaging Unit /K
TCR Sensor/K (PWB-N4)
Step
Correct the TCR connection on the underside of
1
the Imaging Unit if faulty.
Clean or correct each contact of the Imaging Unit
2
if faulty.
3 Change Imaging Unit.
4 Change PWB-MC
5 Change PWB-MFPC.
16.6.32 C2559: Cyan TCR Sensor adjustment failure
16.6.33 C255A: Magenta TCR Sensor adjustment failure
16.6.34 C255B: Yellow TCR Sensor adjustment failure
TCR Sensor/C (PWB-N3)
TCR Sensor/M (PWB-N2)
TCR Sensor/Y (PWB-N1)
Toner Supply Motor C/K (M3)
Toner Supply Motor Y/M (M4)
Step
Clean the TCR Sensor window on the under-
1
side of the Imaging Unit if dirty
2 Clean the TCR Sensor LED if dirty
Correct the contact and/or WIRING of the
3
TCR Sensor if faulty.
4 Reinstall Imaging Unit C/M/Y.
M3, M4 operation check
5
6 Change Imaging Unit.
7 Change PWB-MC
8 Change PWB-MFPC.
354
Relevant Electrical Parts
Control Board (PWB-MC)
MFP Control Board (PWB-MFPC)
Action
Relevant Electrical Parts
Control Board (PWB-MC)
MFP Control Board (PWB-MFPC)
Imaging Unit /C
Imaging Unit /M
Imaging Unit /Y
Action
Field Service Ver. 1.0 Mar. 2005
WIRING DIAGRAM
Control Signal
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WIRING DIAGRAM
Control Signal
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PWB-MC PJ8MC-1 to 4
PWB-MC PJ8MC-5 to 8
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Location
(Electrical
Component)
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Location
(Electrical
Component)
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C to D-14
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