C-255A (C255A), C-255B (C255B), C-2559 (C2559) or C-255C (C255C) at power up.
C-255x code at power up.
CAUSE: The K (black) IU (C-255C) has failed. The M (Magenta) IU (C-255A), Y (Yellow) IU (C-255B) or C (Cyan) IU (C-2559) is not fully seated or has failed.
SOLUTION: Replace the K (black) IU (Item #A0DE02F for the bizhub C203/C253 and Item #A0DE03F for the bizhub C353). Reseat the color IU and if the problem persists, replace it. Item # Color IU Model
A0DE0CF Magenta bizhub C203/C253
A0DE0DF Magenta bizhub C353
A0DE06F Yellow bizhub C203/C253
A0DE07F Yellow bizhub C353
A0DE0HF Cyan bizhub C203/C253
A0DE0JF Cyan bizhub C353 SPECIAL NOTE: Solution contribution by Tom Kelly, Workgroup/SSD
None Specified Details Subject:
After toner installation, C255x code within a few hundred prints.
C2551, C2553, C2555 or C2557 codes.
CAUSE: Toner is not supplied due to abnormal position of coupling.
Normal conditionThe coupling is blocked by bracket
Check the fill tube from the toner cartridge to the image unit. It may have become plugged with toner. Also if you have this code, shutting the machine of and on will not reset it. Power on the machine, wait till the code appears. Open the front door and close it. This should reset the code.