Perhaps the magnetic roller is not rotating properly. Try checking the gear and its axis. If the flow of toner from the bottle into the imaging unit is blocked, usually, the heating time is very long and you'll get a message please add toner or toner bottle is empty. And even if it can print, suddenly interrupted by the heating process again.
Toner Feed Not Working
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Bedul
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was looking over this and agree w/ Hansoon dev, drum, hopper, need to be completely cleaned out very messy job. also you should change drum &blade as these will most likely be damaged in the proses. dev can be dumped into good plastic trash bag then vacuum out dev unit w/good vacuum. do not get this unit wet in any way!!! add dev powder, reassemble drum unit .drum is light sensitive do not leave exposed to long. when finished run dev calibration may take several minutes . good luckComment
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