Actions Yes No
Step 1
Enter the Diagnostics Menu (turn the printer off, press and hold Up and
Down, turn the printer on, and then release the buttons when the installed
memory and processor speed displays).
Perform the Panel Test. See
“Panel Test” on page 172.
Did all the pixels come on?
Go to step 2. Replace the operator
panel. See
“Operator
panel removal (for
CS310 models only)”
on page 254.
Step 2
Turn the printer off.
Remove the rear cover. See
“Rear cover removal” on page 290.
Remove the operator panel. See
“Operator panel removal (for CS310
models only)” on page 254.
Is the operator panel cable properly installed at JOP1 on the controller
board and the operator panel assembly?
Go to step 3. Reinstall the cable.
Step 3
Replace the operator panel. See
“Operator panel removal (for CS310
models only)” on page 254.
Is the operator panel still dim and unchanging?
Replace the controller
board. See
“Controller
board removal” on
page 291.
Problem resolved.
For CS410 models:
5027
Diagnostic information
124