The typical problem we saw when the customers was using non-OEM toner was that the machines would throw the code in the morning. I think the friction of the cleaning roller was to high when the machine was cold inside.
This problem went away after convincing the customer to use OEM toner.
Id replace the DV unit & drum if life expirered or close.
Code
C2557
Description
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. Hi
Let us eat, drink, and be merry, because tomorrow we may die!
For all your firmware & service manual needs please visit us at:
www.copierfirmware.co.uk - www.printerfirmware.co.uk
Let us eat, drink, and be merry, because tomorrow we may die!
For all your firmware & service manual needs please visit us at:
www.copierfirmware.co.uk - www.printerfirmware.co.uk
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