Troubleshooting Based On Symptoms; No Control Panel Led's Light; Multiple Control Panel Led's Lit And Do Not Extinguish - Epson DFX-9000 Repair Manual

Epson DFX-9000 Field Repair Guide

Troubleshooting Based on Symptoms

The following section provides a list of typical symptoms exhibited by the printer when a failure has occurred. This
section describes the appropriate actions which should be taken to accurately troubleshoot the cause of the failure
based upon the symptoms exhibited by the printer

No Control Panel LED's light

Action:
1. Check the power cable connection at both ends.
2. Perform a continuity check on the power cable with a ohm meter.
3. Verify that the wall socket supplies clean AC power that matches the voltage rating of the printer.
4. Check the connections at both ends of the OP Cable (Control Panel Cable). Replace the OP Cable as
necessary.
5. Replace the OP Unit.
6. Replace the Power Unit.
7. Initialize the ROM Board. If initialization fails replace the ROM Board.

Multiple Control Panel LED's lit and do not extinguish

Action:
1. Initialize the ROM Board.
2. If initializing the ROM Board fails to resolve the problem, replace the ROM Board.
Troubleshooting Printer Component, Software Item, LCD Display, Printer Button
3/29/07
Page 132.