Lexmark Optra Color 45 Service Manual page 44

4080-001
FRU
2 Engine Board
Printhead Cable
Rubber Backer
3 Maintenance
Station
2-22
Service Manual
Action
Perform the Clean Heads from the diagnostic
mode. 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 engine 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.
• Refer to the test page. The temperature value is
Celsius.
Note: Printing slows to prevent overheating and
excessive ink flow, when the temperature is above
the normal operating range, or when printing
complex graphics.
The normal operating temperature range is
60 to 90° F (16 to 32° C). If the printer is operating
in a warm environment, >104° F (40° C),
excessive ink may flow from the cartridge. The
operating temperature can be found by performing
the "Cleaning the Printheads" on page
Intermittent nozzle failures can be caused by worn
parts in the maintenance station. Perform the
"Maintenance Station Service Check" on
page 2-10, then return to this check.
3-2.