Lexmark 7300 Series, Service Manual

Page: 41 / 88

4418-X6X
Diagnostic information
2-21
Color print
cartridge cross
contamination Be sure the print cartridge nozzle plate is clean. Clean
with a clean, lint-free cloth dampened with water.
If cross contamination occurs, check for:
• Maintenance station wiper damage
• Used tape on the printhead nozzle plate
If the wiper is damaged, replace the maintenance
station. Go to
“Maintenance station removal” on
page 4-20 .
Note: Do not retape the printhead nozzle plate.
Maintenance
Station Intermittent nozzle failures can be caused by worn
parts in the maintenance station. If you find worn parts,
replace the maintenance station. Go to
“Maintenance
station removal” on page 4-20 .
Paper Feed Ink smudging and smearing can be caused by paper
problems or problems in the paper feed area. Check
for:
• Correct type of paper
• Curled or wrinkled paper
• Paper path obstructions
• Feed roller wear or looseness
• Worn gears or binds
If the paper feed roller or gears are defective, replace
the print engine. Go to
“Print engine removal” on
page 4-17 .
Carrier Transport Blurred print and voids can be caused by problems in
the carrier transport area. Check the following:
• Carrier transport belt for wear
• Idler pulley parts for wear, damage, or looseness
• Carrier guide rod for wear or dirt. If the rod is dirty,
clean and lubricate it.
The carrier to carrier frame engagement should be
lubricated with grease P/N 40X0179.
If the carrier transport belt is worn, replace the carrier
assembly. Go to
“Carrier assembly with cables, belt,
and cable clip removal” on page 4-18 .
If the idler pulley parts are defective, replace the print
engine. Go to
“Print engine removal” on page 4-17 .
Unit/Problem Action