Lexmark MX910de Service Manual page 90

2 x 500‑sheet tray 3 transport jam service check
Action
Step 1
Make sure that the paper path between tray 2 and tray 3, including the
sensors, are free of debris or dust.
Does the problem remain?
Step 2
a
Enter the Diagnostics menu, and then navigate to:
INPUT TRAY TESTS > Feed Tests > Tray 3
b
Check the movement and position of the paper.
Does the leading edge of the paper reach the sensor (tray 2 transport)?
Step 3
Check the sensor (tray 2 transport).
Is it free of damage?
Step 4
Enter the Diagnostics menu, and then navigate to:
SENSOR TESTS > PRINTER SENSOR TESTS > Tray 2 transport
Does the sensor status change while toggling the sensor?
Step 5
a
Reseat the sensor cable.
b
Check the cable for damage, and replace if necessary.
Does the problem remain?
Step 6
Replace the sensor (tray 2 transport).
Does the problem remain?
Step 7
Check the tray 3 transport roller for damage, and replace if necessary.
Note: If the page count is over 50K, then clean the rollers.
Does the problem remain?
Step 8
Enter the Diagnostics menu, and then navigate to:
MOTOR TESTS > 2 x 500-Sheet Tray Motor Tests > Tray 3 transport
Does the motor run?
Yes
Go to step 2.
Go to step 3.
Go to step 4.
Go to step 12.
Go to step 6.
Go to step 7.
Go to step 8.
Go to step 12.
Diagnostic information
90
7421
No
The problem is solved.
Go to step 7.
Go to step 6.
Go to step 5.
The problem is solved.
The problem is solved.
The problem is solved.
Go to step 9.