01/023-118825/8830 Printer PQ 5, PQ 6Print QualityPQ 5 Black Prints PQ 6 Blank Prints / Partial ImageTable 1 Black Prints Symptom / CheckSymptom/ checkThe print is totally black withno image.Probable Cause Corrective Action1. Defective ChargeScorotron1. Clean or replace thescreen/pins ( REP 9.8).2. Charge control circuit/defective Harness2. Perform GP 1 HVPSCheckout Procedure.Table 1 Blank Prints / Partial Image Symptom / CheckSymptom/ checkNo image or a partial image isproduced when making aprint.Probable Cause Corrective Action1. Developer Housing 1A. Ensure that the Devel-oper Housing Module drivegears are engaged and thedeveloper housing is turning.1B. Ensure that the gear lockis released from the Devel-oper Housing Drive Gear.2. Transfer Corotron 2A. Check the TransferCorotron for damage / con-tamination.2B. Perform GP 1, HVPSCheckout Procedure.3. Defective HVPS 3. Perform GP 1, HVPSCheckout procedure.4. Image Module LEDs inop-erative4A. Enter [9-21-5 and checkfor correct operation. (Referto BSD 6.1, BSD 6.2 andcheck for correct electricalconnections to/from theReceiver PWB and the LEDImage Bar.)4B. Ensure that all connectorsare seated and voltages arecorrect to the LED, 5VDC,RS422, Signal Harness,Receiver PWB.5. No drum drive / defectivedrum.5. Refer to BSD 4.3 andcheck for correct drum drive.Replace the drum ( REP 9.3).6. PJ 330 (Tag 28) or 307A(without Tag 28) is not cor-rectly seated.6. Reseat the connector.
