Question about Konica Minolta bizhub C250 All-In-One Laser Printer

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I ran out of toner and recieved code c 2557. I have replaced the toner and I am still getting this code?

I ran out of toner and got the code c 2557. I have replaced the toner and I am still getting this code?

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Enter tech rep, then auto toner supply, runs for about 5 mins, this will set the dev/toner mix back to the correct level, 7%

Posted on Jun 26, 2009

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This due to less toner in developer try to off and on several times if it happen again need to replace developer

Posted on Jun 10, 2009

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1 Answer

Develop ineo 250 Error C2557 How reset it?

Just reset the pc life and run F8, code 2557 will reset. You will reset the pc life while the right door is open or else anoying buzzer will come everytime you turn ON the sw. I hope you know the right procedures on resetting pc counters. Then add little toner on developer and run F8. Some tricks you have to do in here.... Little dark copies are expected but after a week or two the copies will surely great!

Jan 07, 2016 | Office Equipment & Supplies

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Bizhub c550

replace the drum and developer unit. try this site for parts as a start

Precision Roller Printer Toner Cartridges Parts and Supplies Office...

Apr 14, 2014 | Konica Minolta Bizhub C550

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3530 copier

replace the black image unit not the toner is the toner third party if it is replace it also

Feb 26, 2014 | Konica Minolta Office Equipment & Supplies

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Error code 2557

C2557: Abnormally low toner density detected black TCR sensor.
Detailed Error code explained below.
Possiable solutions.
* Open and close the front toner door.
* Restart the machine by turning off the LCD screen power switch, then by the main body switch located behind the access panel above tray 1 indicator light.
* Call Konica to get a tech out.
C2557 Abnormally low toner
density detected black
TCR sensor
• When sampling data is determined in TC
ratio calculation control, TCR sensor output
is higher than a predetermined value for a
predetermined number of times in a row
even though there is toner in the sub hopper.

Feb 19, 2014 | Konica Minolta Bizhub C550

1 Answer

Error code 2557

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.

Feb 11, 2013 | Konica Minolta Bizhub C220 Color Copier

1 Answer

Konica minolta bizhub 362 code 2557 for what

It's toner density sensor problem but first of all check if there is sufficient amount of developer and toner. Low quantity of developer/toner in developing unit also cause this problem.

Jun 05, 2011 | Konica Minolta Bizhub 362 Copier

1 Answer

Minolta bizhub how to reset error code 2557

You will most likely need a service technician. This error code indicates an ATDC (Automatic Toner Density Control) sensor failure. This means that the machine is seeing either an undertoned (not enough toner) or an overtoned (too much toner) condition within the imaging unit. This usually requires possible sensor replacement, or most likely a starter (developer) change and recalibration.
This can be caused if you have run the machine low on toner or possible used the wrong toner in the machine.
You can reset by opening then closing the front door on the machine or turning the machine off then on again but most likely the code will return.
Good Luck

Dec 22, 2009 | Konica Minolta bizhub 350 All-In-One Laser...

3 Answers

C2557 error message

If is a BW 350 go to service mode ( stop 0 0 stop 01) counter apecial part counter reset drum and dev switc off the very quiqly service mode function run f8. Did you replaced drum and developer?

Aug 11, 2009 | Konica Minolta bizhub 350 All-In-One Laser...

1 Answer


Yes, open and close front door. And or power off both power switches. Wait ten seconds then turn it on again. The code is for the black image unit lack of toner. Check the image unit, and ensure toner is installed. Model type? would also be welcome

Jul 29, 2009 | Office Equipment & Supplies

1 Answer

Konica minolta is getting error c2557, before this it was saying

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

Mar 17, 2009 | Sharp AL 800 Copier

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