Lexmark 13P0195 - C 750dn Color Laser Printer, Service Manual

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Diagnostic information
2-3
5060-00 x
Symptom tables
Symptom table—base printer
Symptom Action
Fuser fan fails to run or is noisy Go to “925 Error code” on page 2-90 .
RIP fan fails to run or is noisy Go to “927 Error code” on page 2-91 .
VTB fan fails to run or is noisy Go to “926 Error code” on page 2-90 .
Machine inoperative: Fans don’t turn, engine not on,
lights not on, none of the printer functions work. Go to “AC and DC power service check” on
page 2-112 .
Operator panel: One or more buttons do not work Go to “Operator panel LCD/status LED/buttons
service check” on page 2-132 .
Operator panel: Display is blank, printer does not
sound 5
beeps , but printer is not inoperative.
Replace the operator panel. Go to “Operator panel
removal” on page 4-46 .
Operator panel: Operator panel displays all diamonds
continuously, sounds 5
beeps and POST inoperative
Go to “Operator panel LCD/status LED/buttons
service check” on page 2-132 .
Operator panel: One pel or random pels are missing Replace the operator panel. Go to “Operator panel
removal” on page 4-46 .
Paper feed problems, base printer Go to “200 Paper jam—Tray 1” on page 2-67 .
Paper feed problems, integrated tray Go to “Tray 1 service check” on page 2-149 .
Paper feed problems, MPF Go to “Multipurpose feeder (MPF)” on page 2-70 .
Printer prints black only, no colors Make sure that the printer is not set up to print black
only. If the printer is set up correctly, check the black
retract motor and gears for correct operation. If the
gears are operating correctly, go to
“Black only
retract (BOR) service check” on page 2-117 .
Print quality: 100% single color printed
• All black print
• All cyan print
• All magenta print
• All yellow print
Go to “Entire page is mostly one color—Full bleed
planes in one color” on page 2-140 .
Print quality: blank page (no image) Go to “Blank page (no image)” on page 2-139 .
Print quality: evenly spaced horizontal marks or lines
on the printed page Go to “Horizontal lines or streaks” on page 2-137 .
Print quality: black line Black horizontal lines are most likely caused by a
shorted charge roll in the print cartridge. Replace the
black print cartridge.
Print quality: magenta, cyan, or yellow lines Go to “Vertical lines or streaks” on page 2-138 or
“Horizontal lines or streaks” on page 2-137 .
Print quality: colored lines, streaks, or smudges Go to “Vertical lines or streaks” on page 2-138 or
“Horizontal lines or streaks” on page 2-137 .
Print quality: light lines or streaks appear on the
printed page Go to “All colors have light print over the entire
page” on page 2-142 . or “One color has light print
over the entire page” on page 2-143
Print quality: light print Go to “Light print over the entire page” on
page 2-142 .
Print quality: missing colors Go to “Missing colors—Complete or partially
missing color planes” on page 2-141 .
Print quality: uneven printing Go to “Uneven printing” on page 2-145 .
Print quality: poor color alignment Go to “Poor color alignment” on page 2-144 .