Lexmark C91 Series, Service Manual

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Service Manual
5055-xxx
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Inspect all supplies (OCR, cartridges, photodevelopers/toner
cartridges, belts, fuser CRUs) and paper sources (cassettes,
trays, feeders, duplex drawers, finishers, mailbox trays) for
obvious damage and proper installation (paper under corner
bucklers, paper guides not too tight). Inspect for correct media
usage (paper, transparencies, labels).
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Print a Demo page.
•
If additional paper sources are installed, print a Demo page
from each of these, (if possible).
Note: Failure to print from an additional tray or feeder may imply
one or more pins are bent in the mating connector.
Return parts
Engineering periodically analyzes returned parts for failure modes.
Include a printed test (DEMO) page, before and after the repair, and
tag any returnable parts with a description of the failure.
Service recommendations
Before leaving the printer check the following:
•
Be sure printer is on a flat, level, strong tabletop or level floor.
This is very important for color printers that use belts. Check
and set registration as necessary.
•
Shake all cartridges and be sure they are correctly installed and
fully seated.
•
While the cover is open, wipe any residual toner from the LEDs
using a lint free cloth.
•
If you have serviced the finisher option, and in the process
pulled it away from the printer during repair, ensure that it is
properly aligned with the printer.