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FAX-L1000 Chapter 5: Appendix
3.7.4 Maintenance and Service
a) Troubleshooting
Every time the main unit is switched ON, the ethernet board automatically performs a self-
diagnostic test. If the self-diagnostic test detects no errors, the LK LED lights and stays on.
After the main unit is switched ON, the ER LED starts flashing and continues flashing until
the ethernet board is ready to operate. If the ER LED lights orange and remains on, or if it
continues to flash, follow the procedures below.
ER LED lights or flashes once, twice, or three times in sequence.
<Possible causes>
1. The ethernet board is defective.
Action: Replace the ethernet board.
ER LED flashes four times in sequence.
<Possible causes>
1. The ethernet cable connection is loose or broken, or the ethernet board is not installed
correctly.
Action: Check the connectors on both ends of the cable connecting the ethernet board to
the ethernet. Make sure the RJ45 connectors are undamaged and securely fastened at both
connection points.
2. Peerless standard I/O interface connector are loose.
Action: Reinstall the ethernet board.
3. The ethernet board is defective.
Action: Replace the ethernet board.
"ETHERNET OPTION ERROR"
<Possible causes>
1.Defective optional ethernet board
Action: Replace the ethernet board.
2.Defective PDL board
Action: Replace the PDL board.