Konica-Minolta bizhub C253 Error Codes

   

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Code

C2556

Description

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.

Remedy

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