Lexmark CS720 Service Manual page 122

Action
Step 4
Remove the excess paper from the tray.
Does the problem remain?
Step 5
Check the paper condition in the tray.
Is the paper crumpled or damaged?
Step 6
Replace the crumpled or damaged paper.
Does the problem remain?
Step 7
a
Enter the Diagnostics menu, and then navigate to:
Printer diagnostics & adjustments > Sensor tests
b
Find the sensor (Input).
Does the sensor status change while toggling the sensor?
Step 8
Check the sensor cable for proper connection, and then reseat if
necessary.
Does the problem remain?
Step 9
Replace the sensor. See
Does the problem remain?
Step 10
Perform a print job.
Does the problem remain?
Sensor (tray 1 pick) static jam service check
Action
Step 1
a
From the home screen, touch Settings > Device > Preferences.
b
Check if the paper size matches the size set on the tray guides.
Does the paper size match the size set on the tray?
"Sensor (input) removal" on page
Diagnostic information
Yes
Go to step 5.
Go to step 6.
Go to step 7.
Go to step 9.
Go to step 9.
Go to step 10.
341.
Contact the next
level of support.
Yes
Go to step 3.
122
5028
No
The problem is
solved.
Go to step 7.
The problem is
solved.
The problem is
solved.
The problem is
solved.
The problem is
solved.
The problem is
solved.
No
Go to step 2.