Operator panel (display blank) 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.
Note: The printer has detected a problem with the controller board, the operator panel assembly cable (part of the
front cover assembly), or the operator panel assembly if POST does not complete. The printer emits five beeps, and
sticks in a continuous pattern until the printer is turned off.
For CX310 and CX410 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 assembly cable properly installed at JLCD1 on the
controller board and the operator panel assembly?
Note: JCDL1 is the ribbon cable connector on the right side facing the
controller board.
Go to step 2. Reinstall the cable.
CX310
CX410
7527
Diagnostic information
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