Maybe the power it's not correct.Try to reset hold utility key and power on hold the utility and on screen will be show the ikon trouble reset push it and will show ok power of and on again
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Take the toner bottle out. Then you will need to remove several cover to gain access to the sensor way in the back of the where the toner bottle goes and clean that sensor. might even need replacing.
actually code c28xx have 7 variant. for example, c2801, c2802, c2803 (error 3,4,5,6) and c2804. if follow the code code c28xx is TCR output abnormality. ok, first you clean T/S block, do servicing and cleaning all parts. second, if still same, do toner auto supply. third, trouble reset. off your machine first, press and hold utility/counter and on machine, until trouble reset appear. press it and off/on again. ^^,
if the code does come back DO NOT RESET the machine again! It is indicating a problem the code you are resetting is the fuser and it can catch on fire! That will ruin a perfectly good day!!! ENSURE YOU WAIT 10 SECONDS
1.Turn OFF the main power switch. (Located inside machine) Leave control power switch in the on position.) 2.Turn main power switch ON while pressing the Utility/Counter key. 3.Touch [Trouble Reset]. 4.Check to make sure that [OK] is displayed and the it has been reset. 5.After turning off the main power switch, turn it on again more than 10 seconds after and check if the machine starts correctly.
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