Lexmark M410 - Optra B/W Laser Printer Service Manual page 64

4045-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
2 Engine Board
3 HVPS Cable/HVPS
Print Quality - Blank Page
FRU
1 Print Cartridge
2 Developer Drive and
Coupler
2-38
Service Manual
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.
Check the voltages on J9-1 through
J9-9. If incorrect, replace the HVPS.
Check the continuity of the HVPS
cable. If incorrect, replace the cable
assembly. If correct, replace the
HVPS.
Action
Check the print cartridge for any
signs of damage, especially the PC
drum contact on the cartridge.
Make sure the developer drive is
working properly and the coupler is
correctly installed between the main
drive and the developer drive.