Lexmark MX71X - Duplex Control Jam Service Check

Action Yes No
Step 3
Check the sensor (duplex path) for proper operation.
a Enter the diagnostic mode.
b Select duplex tests.
c Select sensor test.
d Observe the line item sensor.
Does the display on the control panel change every time the sensing area
of the sensor is interrupted or blocked?
Go to step 5. Go to step 4.
Step 4
Check the sensor (duplex path) for proper connection.
Is the sensor connected properly?
Replace the sensor
(duplex path) See
“Sensor (duplex path)
removal” on page
542.
Reseat the connection
Step 5
Check the upper redrive for damage.
Is the component free from damage?
Go to step 6. Replace the upper
redrive. See
“Upper
redrive removal” on
page 571.
Step 6
Perform a print test and check the upper redrive motor for proper
operation.
Does the component operate properly?
Go to step 7. Replace the upper
redrive motor. See
“Upper redrive motor
removal” on page
569.
Step 7
Perform a print test.
Does the problem remain?
Contact the next level
of technical support.
The problem is solved.
Duplex control jam service check
Action Yes No
Step 1
Check the duplex path for media jams and obstructions.
Is the duplex path free from media jams and obstructions?
Go to step 2. Remove media jams
and obstructions.
Step 2
Ensure the duplex motor cable and the socket "DUPLEX MTR” on the
controller board is properly connected.
Is the above cable properly connected?
Go to step 3. Reseat the connection.
7463
Diagnostic information
108