Question about Konica Minolta Bizhub C220 Color Copier
Dear all, Last time also i posted same error, i got some solution but no use, the error C2557 coming again, and the TCR value for Cyan is 4 and Black for 3.5, please help me. My advance Thanks
C-2557 Abnormally low toner density detected black TCR sensor.The TC ratio in the developing machine wich is determined by toner replenishing amount control mechanism is 5% or less for a given number of times consecutively.
Relevant electrical parts:imaging unit K,toner supply motor C/K ,mechanical control board or MFP control board.
Perform image troubleshooting procedure if image density is low.
Clean the TCR sensor window on the underside of the imaging unit if dirty.
Check the toner supply motor operation.
Remove and reinstall imaging unit K. or change the imaging unit.
Last solution turn ON the copier open the front door ,enter in service mode,select sistem1 or 2 ,select IuU Unit,select Unit K ,select new release press start and after job is completed close the front door,turn OFF the power,wait 2 minutes and turn ON.
Posted on Feb 11, 2013
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It is my pleasure to guide you.
Konica Minolta 250 Error C2557 is Toner Density sensor problem
Problem: code C2557 - Abnormally low toner density detected Black TCR Sensor
Sounds like something a technician should take care of. Most of the information I could obtain says that the
Solution: Replaced 4038-R729-00 Hopper Drive Assy (C250 part compatible with C252 )
Good luck and please post back that you are successful, giving thumbs up, or if I can be more helpful.
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