Lexmark Optra SC 1275 Service Manual page 66

Symptom
Power supply fan failure.
Synchronizing/timing roller does not
rotate.
Operator panel does not operate prop-
erly
• Foggy print
• Black pages
• Blank print
• White spots
• Poor reproduction
• Incorrect color image registration
• Dirt on back of paper
• Low image density
• White and black lines and bands
Evenly spaced marks on the paper, or a
single mark in the same place on every
page.
Paper feed problems in the image trans-
fer roll area
Action
Go to the "Power Supply Cooling
Fan Motor Service Check" on
page 2-39.
Go to the "Paper Jam Service
Check" on page 2-35.
Go to the Diagnostic Aids chap-
ter and run the LCD and Button
tests. If the tests fail, replace the
operator panel. If the display has
diamonds on it or is blank, run
the "Basic Printer Paper Pas-
sage Test" on page 2-48. If the
test completes and the panel
remains blank, replace the oper-
ator panel. If diamonds remain,
check the SIMMs and riser card
for proper installation. If you still
have a problem, replace the
ROM SIMM as it is the most
likely failure. If you still have a
problem, replace the controller
card.
If your machine beeps 5 times
and the screen is blank or all
diamonds, replace the operator
panel.
Go to the "Image Quality Trou-
bleshooting" on page 2-42.
Go to the "Marks on Paper Ser-
vice Check" on page 41.
Go to the "Paper Jam Service
Check" on page 2-35.
Diagnostic Information 2-31