B: Troubleshooting; Power-Up Troubleshooting - Lantronix EPS1 Installation Manual

B: Troubleshooting

This Appendix discusses how to diagnose and fix errors quickly yourself without having to
contact a dealer or Lantronix. It will help to connect a terminal to the serial port while
diagnosing an error to view any summary messages that are displayed.
When troubleshooting, always ensure that the physical connections (power cable, network
cable, and serial cable) are secure. If you have trouble with wireless networking, it may
help to connect the EPS to a wired Ethernet network to verify that it is working properly
and to check the wireless settings.
Some unexplained errors may be caused by duplicate IP addresses on
Note:
the network. Make sure that your EPS IP address is unique.
B.1 Power-up Troubleshooting
There are several possible error situations if the LEDs do not flash.
Message
Power-up diagnostic failure (hardware
failure)
The EPS boots but does not try to load
the Flash ROM code
Network Error: The ACT LED will
blink yellow 2-3 times per second
Table B-1: Error Messages
Diagnosis/Remedy
Note which LED is blinking and its color, then contact
your dealer or Lantronix Technical Support.
Set DIP switch 4 to Verbose mode. A brief description
of the problem will be queued to the parallel port and
printed.
A. Make sure the Ethernet network cable is properly
connected and reboot the EPS.
B. If option A fails to resolve the problem, reload
Flash ROM. Refer to Appendix D.
B-1