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1 PJ7A, CN10, and CN41 are plugged securely into Master Board. NO Plug them in securely. 2 Photosensor/LED of the AIDC Sensor are contaminated. YES Clean. NO Change AIDC Sensor Board. Change Master Board.
Remove the old drum unit,remove the drum and the drum cleaning blade,clean the charge corona wire and grid,install the new drum and drum cleaning blade,clean the image transfer /separator corona wire,clean the optical parts(mirrors ,lens,glass)clean the AIDC sensoe located under OPC drum,reinstall the drum unit in the copier,enter in the technical Rep mode,place 5 sheets A3 paper on the original glass and perform F5 AIDC sensor(Auto image density control).
Cof 024 - AIDC sensor contamination correction failure.The photosensore LED located under OPC drum of the AIDC sensor dirty.Clean the sensor,reset the malfunction code if the necessary perform F5 AIDC auto adjustment.
Atomatic Intensity Density Cotrol sensor malfunction. Clean the optical parts:lens,mirrors and original glass.Remove the OPC unit clean the AIDC sensor under drum in the rear side,use the vacuun cleaner for remove the used toner under cleaning blade,reasamly the unit.Clean the transfer and separator corona holders and wires and perform the F5.Enter in the service mode Stop key-0-Stop-1 Function menu ,place A3 sheets in the original glass place and perform F5.See the F code history and reset it.This code reset if you open and close the front door.
toner carrier ratio is off, try adding toner by pressing the toner button on the control panel and insure there is toner in the toner bottle.
If this doesn't correct it the AIDC sensor may have failed
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