Operator panel (displays all diamonds, no beeps, or five beeps) service check
Replace one of the following components, and perform a POR before replacing a second component. Never replace
both of the components without performing a POR after installing each one, or the printer will be rendered inoperable.
For CX310 models:
• Controller board
• Operator panel with UICC card
For CX410 and CX510 models:
• Controller board
• UICC card
Warning—Potential Damage: Never install and remove components listed above as a method of troubleshooting
components. Once a component has been installed in a printer, and the printer is powered on, it cannot be used in
another printer. It must be returned to the manufacturer.
For CX310 models:
Actions Yes No
Step 1
Turn the printer off.
Remove the rear cover. See
“Rear cover removal” on page 307.
Remove the operator panel. See
“Operator panel removal (for CX310 and
CX410 models only)” on page 276.
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.
Go to step 2. Reinstall the cable.
Step 2
Replace the operator panel assembly. See
“Operator panel removal (for
CX310 and CX410 models only)” on page 276.
Does the operator panel display all diamonds?
Problem solved. Replace the controller
board. See
“Controller
board removal” on
page 309.
For CX410 models:
7527
Diagnostic information
131
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