Lexmark CS720 Service Manual page 144

Action
Step 4
Remove the partially fed or jammed paper.
Does the problem remain?
Step 5
a
Enter the Diagnostics menu, and then navigate to:
Additional input tray diagnostics > Sensor tests
b
Find the sensor (Trailing edge (tray [x])).
Does the sensor status change while toggling the sensor?
Step 6
Reseat the sensor cable, and then check the sensor for
misalignment and damage.
Is the sensor properly installed and free of damage?
Step 7
Reinstall or replace the sensor. See
trailing edge) removal" on page
Does the problem remain?
Step 8
a
Enter the Diagnostics menu, and then navigate to:
Printer diagnostics & adjustments > Motor tests
b
Find the motor (Duplex/MPF), and then touch Start.
Does the motor run?
Step 9
Reseat the motor cable, and then check the motor for misalignment
and damage.
Is the motor properly installed and free of damage?
Step 10
Reinstall or replace the motor. See
on page 315.
Does the problem remain?
Step 11
a
Enter the Diagnostics menu, and then navigate to:
Additional input tray diagnostics > Sensor tests
b
Find the sensor (Pass-through (tray [x])).
Does the sensor status change while toggling the sensor?
"Sensor (550-sheet tray
380.
"Motor (duplex/MPF) removal"
Diagnostic information
144
Yes No
Go to step 5. The problem is
solved.
Go to step 8. Go to step 6.
Go to step 8. Go to step 7.
Go to step 8. The problem is
solved.
Go to step 11. Go to step 9.
Go to step 11. Go to step 10.
Go to step 11. The problem is
solved.
Go to step 14. Go to step 12.
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