Operator Panel Usb Cable Service Check - Lexmark CX310n Service Manual

Steps in solving the problem
Actions
Enter Diagnostics Menu (turn the printer off, press and hold 3 and 6, turn
the printer on, and then release the buttons when the installed memory
and processor speed displays).
Perform the Button Test. See
Diagnostics menu.
Did any of the buttons fail the test?

Operator panel USB cable service check

Actions
Step 1
Remove the rear cover. See
Is the cable properly seated in the controller board?
Step 2
Replace the USB cable. See
Is the problem fixed?
"Button Test" on page 171
"Rear cover removal" on page
"USB port connector removal" on page
Diagnostic information
Yes
Replace the UICC card. Problem resolved.
in the
Yes
Go to step 2.
221.
Problem resolved.
303.
129
7527
No
No
Reseat the USB cable.
Replace the controller
board. See "Controller
board removal" on
page 239.