After replace the photocopier drum you need perform the F5 Auto Image Density Control.Enter in the service mode:press Stop key - 0 - 0 -Stop key - 0 - 1 and press 1.In the LCD appear E and press 5 and the copy(start) button for perform the F5.Begining place A3 sheet paper in the original glass.To replace the OPC drum clean the optical section(glass,mirrors,lens,sensors) and change the OPC drum cleaning blade.Clean the quenqing lamp and erasure lamp amd the transfer/separator corona unit(holders,wires) and the charge corona unit.
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