Lantronix LPS1-T User Manual

B-1

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 MPS 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 
the network. Make sure that your MPS IP address is unique.

There are several possible error situations if the LEDs do not flash.

Table B-1:  Error Messages

Power-up diagnostic failure (hardware 
failure)

Note which LED is blinking and its color, then contact 
your dealer or Lantronix Technical Support.

The MPS boots but does not try to load 
the Flash ROM code

Press the Test/Reset button. A brief description of the 
problem will be queued to the parallel port and printed.

Network Error: The ACT LED will 
blink yellow 2-3 times per second

A. Make sure the Ethernet network cable is properly 
connected and reboot the MPS.

B. If option A fails to resolve the problem, reload 
Flash ROM. Refer to Appendix D.