Lexmark 522n - C Color Laser Printer, Руководство по обслуживанию

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Diagnostic Information
2-89
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 Action
1 High Voltage Contacts 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.
3 Charge Roll Conductive
Bushing Check to make sure the charge roll
bushing is correctly installed in the
right charge roll arm.
2 HVPS Check the voltages on J10-1 thru
J10-8. If incorrect, replace the
engine board.
3 HVPS Cable
(Part of Front
Harness Cable)
Engine Board
Check the continuity of the HVPS
cable. If incorrect, replace the cable
assembly. If correct, replace the
engine board.