2557 error codes in C454e - Konica Minolta bizhub 350 All-In-One Laser Printer

missing number in the error code it will be c-XXXX

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

C 2557 - ATDC sensor error.You need to replace the developer in imaging unit.

replace the drum and developer

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

replace the black image unit

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

THIS IS FROM MANUAL

C-2557 ATDC sensor malfunction.Enter in the service mode press following keys:
Utility-Metercount-Details-STOP-0-0-Stop-0-1-press 00000000 press Enter in Tech. mode select Printer than select ATDC gain and read the ATDC current value.If the value is situate 150-160 increase the value to 164-174 (to change the value press C and entering the new value)return in the copy mode turn OFF the copier open the rigy door than close and turn ON the copier and make a few copies.If the error persist discrease the ATDC value and make some copies.If the code persist change the developer .Before change the developer reset the special parts counter I/U counter,developer.After change the developer perform F8 and verify the new value to ATDC gain and notice.

My sincere advise is replace the imaging unit, spacer set and developer of your photocopier machine.

error code 2557 is ATDC Sensor Failure, low density

interesting... this information is covered in detail in this post http://www.fixya.com/support/t1232734-bizhub_250_malfunction_code_c2557_help

I’m happy to assist further over the phone at https://www.6ya.com/expert/norman_d2fa496dce30c65d

c-2557 code has to do with you black toner bottle.
how handy are you?