Lexmark MS71 Series, Service Manual

Page: 75 / 645

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.
Step 3
Reset the machine.
Does the error continue?
Replace the duplex
motor. See “Duplex
motor removal” on
page 314 .
Go to step 4.
Problem solved.
Step 4
Reset the machine.
Does the error continue?
Replace the controller
board. See “Controller
board removal” on
page 340 .
Problem solved.
Sensor (duplex path) miscellaneous jam service check
Action Yes No
Step 1
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 above sensor is interrupted or blocked?
Go to step 3. Go to step 2.
Step 2
Check the above sensor for proper connection.
Is the above sensor connected properly?
Replace the sensor
(duplex path) See
“Sensor (duplex path)
removal” on page
335 .
Reseat the connection.
Step 3
Perform a print test.
Does the problem remain?
Contact the next level
of technical support.
Problem solved.
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Diagnostic information
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