Lexmark M52 Series Service Manual page 109

Action
Step 3
a
Remove the duplex/MPF tray. See
on page 434.
b
Enter the Diagnostics menu, and then navigate to:
Printer diagnostics and adjustments > Sensor tests
c
Find the sensor (Duplex path).
Does the sensor status change while toggling the sensor?
Step 4
a
Remove the right cover. See
page 420.
b
Check the sensor cable J27 on the controller board for proper
connection.
Is the cable properly connected?
Step 5
Reseat the cable.
Does the problem remain?
Step 6
Replace the sensor. See "Sensor (duplex path) with cover
removal" on page 466.
Does the problem remain?
Step 7
Check the upper redrive for damage.
Is the upper redrive free of damage?
Step 8
Replace the upper redrive. See
page 453.
Does the problem remain?
Step 9
a
Remove the rear door. See
449.
b
Enter the Diagnostics menu, and then navigate to:
Printer diagnostics and adjustments > Motor tests
c
Select the motor (Duplex), and then touch Start.
Does the motor run?
"Duplex/MPF tray removal"
"Right cover removal" on
"Upper redrive removal" on
"Rear door removal" on page
Diagnostics and troubleshooting
109
Yes No
Go to step 7. Go to step 4.
Go to step 6. Go to step 5.
Go to step 6. The problem is
solved.
Go to step 7. The problem is
solved.
Go to step 9. Go to step 8.
Go to step 9. The problem is
solved.
Go to step 12. Go to step 10.
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