Lexmark CX825 Service Manual page 169

Action
Step 3
a
Enter the Diagnostics menu, and then navigate to:
Printer diagnostics & adjustments > Sensor tests
b
Find the sensor (Duplex path 2).
Does the sensor status change while toggling the sensor?
Step 4
Check the sensor cable for proper connection, and then reseat if
necessary.
Does the problem remain?
Step 5
Replace the sensor.
Does the problem remain?
Step 6
a
Enter the Diagnostics menu, and then navigate to:
Printer diagnostics & adjustments > Motor tests > Duplex
b
Touch Start.
Does the motor run?
Step 7
Check the motor cable for proper connection, and then reseat if
necessary.
Does the problem remain?
Step 8
Replace the motor.
Does the problem remain?
Step 9
Check the duplex drive gears for damage.
Is the duplex drive gears free of damage?
Step 10
Replace the duplex drive gears. See
removal" on page 608.
Does the problem remain?
Step 11
Check the duplex assembly for damaged gears, belts, and rollers.
Is the duplex assembly free of damage?
"Duplex drive gears
Diagnostic information
169
Yes No
Go to step 6. Go to step 4.
Go to step 5. The problem is
solved.
Go to step 6. The problem is
solved.
Go to step 9. Go to step 7.
Go to step 8. The problem is
solved.
Go to step 9. The problem is
solved.
Go to step 11. Go to step 10.
Go to step 11. The problem is
solved.
Go to step 13. Go to step 12.
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