Lantronix Device Server MSS 485 Installation Manual - B - Troubleshooting

Troubleshooting

Problems and Error Messages 

B - 1

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 will be displayed.

NOTE:

When troubleshooting, always ensure that the physical connections 

(power cable, network cable, and serial cable) are secure.

NOTE:

Some unexplained errors may be caused by duplicate IP addresses 

on the network. Make sure that your MSS’s IP address is unique.

B.1 Problems and Error Messages

Problem situations and error messages are listed in Table B-1. If you cannot 

find an explanation for your problem, try to match it to one of the other 

errors. If you cannot remedy the problem, contact your dealer or Lantronix 

Technical Support.

Table B-1:  

Problems and Error Messages 

Problem/Message

Error

Remedy

The MSS is 

connected to a 

power source, but 

there is no LED 

activity.

The unit or its power supply is 

damaged.

Contact your dealer or Lantronix 

Technical Support for a replacement.

The MSS is unable to 

complete power-up 

diagnostics.

 This generally indicates a 

hardware fault. Either the OK 

or Serial LED will be solid red 

for three seconds, followed by 

one second of another color. 

Note the blinking LED and its color, 

then contact your dealer or Lantronix 

Technical Support. The MSS will not 

be operational until the fault is fixed.