Lexmark T522 Service Manual - Page 117

4520-xxx Print Quality - All Black Page Service Tip: An all black page is generally caused by a problem in the high voltage system or an incorrect high voltage in the printing process resulting in toner development on the entire photoconductor drum. FRU 1 High Voltage Contacts 3 Charge Roll Conductive Bushing 2 HVPS 3 HVPS Cable (Part of Front Harness Cable) Engine Board Action Check the high voltage contacts on the right side frame to ensure they fit securely and are not pitted, contaminated or damaged. If incorrect, replace the contact with one from the HV contact kit. Screws are included to attach the contacts to the right side frame in the HV contact kit. Check to make sure the charge roll bushing is correctly installed in the right charge roll arm. Check the voltages on J10-1 thru J10-8. If incorrect, replace the engine board. Check the continuity of the HVPS cable. If incorrect, replace the cable assembly. If correct, replace the engine board. Diagnostic Information 2-89