Lexmark 4200 Series - Manual (Page 31)

Diagnostic information 2-15
4413-XXX
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 Carrier Assembly Reseat the printhead cables in the system board
and check the following parts for wear or damage:
• Printhead Cartridge Latch
• Latch Spring
• Carrier
4 System Board
Carrier
Assembly Print the self test page. To enter the self test page,
press Options button until “Maintenance” is
displayed. Then press the + button until “Test
Page” is displayed. Press the Select button to print
the test page. 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
a problem is found with contacts on the carrier,
replace the carrier. Go to the
“Carrier assembly
with belt removal” on page 4-18 .
If the symptom remains, replace the system board.
Go to the
“System board removal” on
page 4-19 .
5 Maintenance
Station Intermittent nozzle failures can be caused by worn
parts in the maintenance station. Go to the
“Maintenance station removal” on page 4-17 ,
and then return to this check.