Lexmark MX910de Service Manual page 101

Action
Step 7
Enter the Diagnostics menu, and then navigate to:
INPUT TRAY TESTS > Feed Tests > Tray 4
Does the leading edge of the paper reach the sensor (2 x 500‑sheet tray
4 paper feed)?
Step 8
Check the tray 4 feed, pick, and separator rollers for damage, and replace
if necessary.
Note: If the page count is over 50K, then clean the rollers.
Does the problem remain?
Step 9
Enter the Diagnostics menu, and then navigate to:
MOTOR TESTS > 2 x 500-Sheet Tray Motor Tests > Tray 4 feed
Does the motor run?
Step 10
a
Reseat the motor cable.
b
Check the cable for damage, and replace if necessary.
Does the problem remain?
Step 11
a
Check the paper feed belt for proper tension, and adjust if necessary.
b
Check the paper feed gear and belt for wear or damage, and replace
if necessary.
Does the problem remain?
Step 12
Replace the motor (2 x 500‑sheet tray 4 transport). See
tray feed and transport motors removal" on page
Does the problem remain?
Step 13
Check the sensor (2 x 500‑sheet tray 4 transport).
Is it free of damage?
Step 14
Enter the Diagnostics menu, and then navigate to:
SENSOR TESTS > 2 x 500-Sheet Tray Sensor Tests > Tray 4 transport
Does the sensor status change while toggling the sensor?
Yes
Go to step 13.
Go to step 9.
Go to step 17.
Go to step 11.
Go to step 12.
Go to step 13.
"2 x 500-sheet
486.
Go to step 14.
Go to step 17.
Diagnostic information
101
7421
No
Go to step 8.
The problem is solved.
Go to step 10.
The problem is solved.
The problem is solved.
The problem is solved.
Go to step 16.
Go to step 15.