Lexmark CX310n Service Manual page 123

Actions
Step 1
Enter the 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 Panel Test. See
Did all the pixels come on?
Step 2
Turn the printer off.
Remove the rear cover. See"Rear cover removal" on page
Remove the operator panel. See
models only)" on page 289.
Is the operator panel cable properly installed at JLCD1 on the controller
board and the operator panel assembly?
Note: JLCD1 is the ribbon cable connector on the right side facing the
controller board.
Step 3
Check the UICC card to display cable.
Is the display cable installed at the UICC card correctly?
Step 4
Replace the display. See "Operator panel removal (for CX510 models
only)" on page 289.
Is the operator panel still dim and unchanging?
Step 5
Replace the UICC card. See
only)" on page 289.
Is the operator panel still dim and unchanging?
"Panel Test" on page 171.
"Operator panel removal (for CX510
"Operator panel removal (for CX510 models
Diagnostic information
Yes
Go to step 2.
Go to step 3.
221.
Go to step 4.
Go to step 5.
Replace the controller
board. See
board removal" on
page 239.
123
No
Go to step 4.
Reinstall the cable.
Reinstall the cable.
Problem resolved.
Problem resolved.
"Controller
7527