Originally Posted by
jma676
Just review the units are correct, if you must replace them with new, or if you have some reset units, these units are the same ones that usually cause these types of problems. If you use reset units, is proved necessary to know how is the performance of image stabilization control.
C2551 Abnormally low toner density detected Cyan TCR Sensor.
• TC ratio in the developing machine, which is
determined by Toner replenishing amount control
mechanism, is 5 % or less for a given number of
times consecutively.
C2559 Cyan TCR Sensor adjustment failure.
• TCR Sensor automatic adjustment does not function
properly, failing to adjust to an appropriate
value.
Should first check if the density of toner is low, in service mode, or restart the SC Code opening and closing the door again, the machine tried to restore the density of toner.
All this is possible if you already reviewed that has nothing impermissible contacts of connectors and other parts of the IU. Just replace the unit by Original Cyan or any unit that you check this in good condition.
OK this is obvious, the first thing I must mention is this, just to make clear certain steps.
Clarifies that toner cartridge in this case has no sensor, only based on statistical percentage of consumption.
If the toner consumption is abnormal is also a problem.
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