Epson DFX-9000 - Control Panel Leds Lit Improperly, Printer Functions Correctly; One or more Control Panel Buttons Inoperable

Epson DFX-9000 Field Repair Guide 3/29/07
Troubleshooting Printer Component, Software Item, LCD Display, Printer Button Page 142.
Control Panel LED’s lit improperly, printer functions correctly
Action:
1. Check the OP Cable connection between the OP Board and ROM Board.
2. Replace the OP Cable.
3. Replace the OP Unit.
4. Replace the ROM Board.
One or more Control Panel buttons inoperable
Action:
1. Check whether the printer is “Paused”, and if so, depress the Pause button.
2. Check the OP CABLE connection between the OP Board and ROM Board.
3. Replace the OP Cable.
4. Cycle (turn off and back on) the printer’s power and confirm the trouble symptom.
NOTE: If the printer is producing abnormal odor or smoke, do not turn the power back on until the
source has been determined and the problem resolved.
5. Replace the OP Unit.
6. Replace the ROM Board.