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https://printcopy.info > code=C2552
Code: C2552; Description: Abnormally high toner density detected cyan TCR sensor • TC ratio in the developing unit which is determined by toner replenishing ...
Abnormally low toner density detected Yellow TCR Sensor
• TC ratio in the developing machine, which is determined by Toner replenishing amount control mechanism, is 5 % or less for a given number of times consecutively.
Remedy
0 Open and then close the front door.
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 PWB-M CNDM2-10 to 13 (M6) PWB-M CNDM3-10 to 13 (M7) C-20 C-21.
4 Reinstall Imaging Unit.
5 Change Imaging Unit.
6 Change PWB-M.
7 Change PWB-MFP.
Konica-Minolta bizhub C253 Trouble Error Codes List page 4
Code C2556
Abnormally high toner density detected yellow TCR sensor
• TC ratio in the developing machine, which is determined by toner replenishing amount control mechanism, is 11 % or more for a given number of times consecutively. • When the connector of the TCR sensor is disconnected.
Solution:
1 Reinstall imaging unit. 2 Reinstall toner cartridge. 3 M3, M4 operation check (At this time, IU must be non-installation.). 4 Change imaging unit. 5 Change PRCB
Extract from: http://www.printcopy.info/?l=en&mod=free&chap=erc&brand=Konica-Minolta&model=bizhub%20C253&page=4
C 2554 Abnormally high toner density detected Magenta TCR sensor. Clean the TCR sensor window on the underside of the imaging unit if dirty,reinstall imaging unit or change imaging unit.
TCR output abnormality.Toner control ratio abnormality error code.Restart the machine if code removes then its OK otherwise simply replace the developer and execute TCR adjustment again.
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