Lexmark WinWriter 150c, Service Manual

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15
4077-001
Print Quality Service Check
FRU Action
1 Print Cartridge Be sure the machine contains good print
cartridges.
2 Printhead Carrier
Assembly Reseat the printhead cables in the system board
and check the following parts for wear or damage:
• Print Cartridge Latch
• Latch Spring
• Carrier
3 System Board
Printhead Cable
Rubber Backer • Perform the
“Test Page” on page 19
. Look for
a break in the diagonal line of the test pattern. A
broken line indicates one or more print nozzles
are not working. Run the test again to verify the
failure. If there are even breaks in the diagonal
line similar to the pattern shown below, replace
the system board.
If there is a single break or random breaks in the
diagonal line check the following:
• Check the gold-plated contacts, on the end of
the cable that connect to the carrier, for dirt and
wear. Use only a clean dry cloth to clean the
contacts. Also check the cable for damage. You
may need to remove the cable from the carrier to
inspect it.
• A worn rubber backer results in poor contact
between the printhead cable and the print
cartridge. Check the rubber backer for wear.
4 Maintenance
Station Intermittent nozzle failures can be caused by worn
parts in the maintenance station. Perform the
“Maintenance Station Service Check” on
page 9
, then return to this check.