Lexmark C520 Series, Руководство по обслуживанию

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2-72
Service Manual
5022- xxx
Print quality—residual image
Service tip: Install a new print cartridge if available before doing this service check. Residual image can be
caused by the photoconductor, cleaning blade, and other parts inside the print cartridge.
Print quality—solid color page
Service tip: A solid color 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 Hot roll fuser assembly Check the fuser assembly for toner contamination. The hot roll espe-
cially might cause toner to be retained and deposited on the page.
Potential cause Action
1 Photoconductor unit Replace the photoconductor unit for the color in question.
2 Photoconductor unit charge
roll HVPS contact path. Check the high voltage contact from the HVPS to the photoconductor
charge roll. Ensure contact springs are properly mounted and that
the charge roll contact spring is making good contact with the HVPS
spring that runs through the left printer frame. Go to
“Contact
springs removal” on page 4-56 to view proper mounting and for
removal procedures if the spring(s) is defective.
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