Lexmark MX910de Service Manual page 170

Action
Step 3
a
Reseat the tray 1 lift motor cable.
b
Check the cable for damage, and replace if necessary.
Does the problem remain?
Step 4
Replace the motor (tray 1 lift).
Does the problem remain?
Step 5
a
Make sure that the tray set actuator is properly installed.
b
Check the actuator for damage, and replace if necessary.
Does the problem remain?
Step 6
Check the sensor (tray 1 lift plate level).
Is it free of damage?
Step 7
Enter the Diagnostics menu, and then navigate to:
SENSOR TESTS > PRINTER SENSOR TESTS > Tray 1 lift plate limit
Does the sensor status change while toggling the sensor?
Step 8
a
Reseat the tray 1 lift plate level sensor cable.
b
Check the cable for damage, and replace if necessary.
Does the problem remain?
Step 9
Replace the sensor (tray 1 lift plate level).
Does the problem remain?
Step 10
Check the engine controller board pins for damage, and replace if
necessary. See "Engine controller board removal" on page
Does the problem remain?
Yes
Go to step 4.
Go to step 5.
Go to step 6.
Go to step 7.
Go to step 10.
Go to step 9.
Go to step 10.
Contact the next level
of support.
353.
Diagnostic information
170
7421
No
The problem is solved.
The problem is solved.
The problem is solved.
Go to step 9.
Go to step 8.
The problem is solved.
The problem is solved.
The problem is solved.