developer motor is blocked. cause toner/developer spilled into the front side housing and blocked the gears solution :open front door -remove the pcdu unit-put it in plain desk ,in the front side remove gear housing cover,one screw ,then clean the 3 gears, remove them , remove all toner remaining ,reinstall , check the motion of the drive gears manually,reinstall the PCDU.
1 Comment
generally in Ricoh models SC390 means either bad TD sensor ,or the PCU is misconnected
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Authoreng/ Bahgat Mohamed Archives
July 2020
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