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4093/4094
Print Quality Service Check
FRU
1
Print Cartridge
2
Printhead Carrier
Assembly
3
System Board
Printhead Cable
Rubber Backer
4
Maintenance
Station
2-16
Service Manual
Action
Be sure the printer contains good print cartridges.
Reseat the printhead cables in the system board
and check the following parts for wear or damage:
• Print Cartridge Latch
• Latch Spring
• Carrier
Perform the
"Test Page" on page
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, replace the system
board.
If there is a single break or random breaks in the
diagonal line check the following:
Note: Unplug the printer before cleaning contacts.
• 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.
• Refer to the test page. The temperature value is
in Celsius.
Intermittent nozzle failures can be caused by worn
parts in the maintenance station. Perform the
"Maintenance Station Service Check" on
page
2-9, then return to this check.
3-6. Look for a
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