Print quality service check, Print quality service – Lexmark X73 4402-001 User Manual
Page 29
Diagnostic Information
2-15
4402-001
Print Quality Service Check
FRU / Function
Action
1
Printhead
Cartridge
Be sure the machine contains good print
cartridges.
2
Color Printhead
Cartridge Cross
Contamination
Cross contamination of color inks results in
incorrect colors printed, as when green prints for
yellow, (when yellow and blue are mixed in the
printhead cartridge). This problem resolves quickly
as the printhead cartridge is used.
If cross contamination occurs, check the following:
• The maintenance station wiper for damage.
• The printhead nozzle plate was resealed with
tape.
3
Printhead Carrier
Assembly
Reseat the printhead cable in the system board
and check the following parts for wear or damage:
• Printhead Cartridge Latch
• Latch Spring
• Carrier
4
System Board
Printhead Carrier
Assembly
Perform the
. Look for a
break in the diagonal line of the nozzle test
pattern. A broken line indicates one or more print
nozzles are not working. Run the test again to
verify the failure.
Check the gold-plated contacts on the end of the
printhead carrier cable for dirt, wear, and damage.
Use only a clean dry cloth to clean the contacts.
If the symptom remains, replace the system board.
Go to the
5
Maintenance
Station
Intermittent nozzle failures can be caused by worn
parts in the maintenance station. Go to the
“Maintenance Station Removal” on page 4-14
and then return to this check.