How to solve error c2551 in Konica bizhub c220

What is error code c2557 on Konica c220?

Check the toner bottle to ensure that it is feeding toner into the sub hopper unit under the bottle. Sometimes users will insert the bottle incorrectly and not lock it properly in place...the lever on the front of the toner hopper for that bottle is moved down to the left to remove and insert the bottle.
Dec 28, 2010

Error code C2557 - Konica Minolta - Copytechnet

https://printcopy.info/?mod=erc&brand=Konica-Minolta&model=bizhub+C220&code=C2554

Hi
I found your error code and suggested remedies here:
Error Codes Konica Minolta bizhub 250 Code C2557
This site is very useful as by changing the drop down menus along the top of the page you can view other errors for your machine and for other models and makes. You can also use the link to get a pdf format Service Manual for your machine.
Hope this is helpful, if so would you please register that with Fixya
Cheers

From another site

Details Subject:
C-255A (C255A), C-255B (C255B), C-2559 (C2559) or C-255C (C255C) at power up.
Description:
C-255x code at power up.
Solution:
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

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None Specified Details Subject:
After toner installation, C255x code within a few hundred prints.

Description:
C2551, C2553, C2555 or C2557 codes.
Solution:
CAUSE: Toner is not supplied due to abnormal position of coupling.

Normal condition The coupling is blocked by bracket

take to technical service ,you can not do it easyly

the bizhub 222 typically does not not throw this error code this is an error code is for one of the older konicas and is a toner density error code check developer/ developer unit
if this is a bizhub 222 the toner density error code would be c2557

Replace its imaging unit and developer tank.your machine will start working.

ADTC sensor failure

this error code is not listed in any of the konica c220 books or on the konica minolta service tech internet site

This code happens if you replace drum without replacing developer. Both must be replaced at same time.