Lantronix MSS1-T, Reference Manual

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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 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.
The MSS completes its
power-up and boot
procedures, but there’s
no noticeable serial
activity. There is a problem with the serial
connection or the set-up of the
serial device. Check the terminal setup and the physical
connections, including the cable pinouts
(see Appendix C). Try another serial device
or cable, or cycle power on the MSS.
A rapidly-blinking OK LED may
signal boot failure. Reboot the unit. When the MSS is running
normally, the OK LED blinks every two
seconds.
The terminal shows a
Boot> prompt rather
than a Local> prompt. The MSS is not connected properly
to the Ethernet. Ensure that the MSS is firmly connected to
a functional and properly-terminated
network node.
The MSS Ethernet address is
invalid. The MSS Ethernet address is located on the
bottom of the unit. Use the Change Hard-
ware
command to set the correct address
page B-4), then reboot.
Init Noboot command was
entered.
See Entering Commands at the Boot Prompt
on page B-3.
The MSS passes power-
up diagnostics, but
attempts to download
new Flash ROM code
from a network host. If the OK LED blinks rapidly, the
Flash ROM code may be corrupt. Reboot the unit. If you get the same mes-
sage, you will need to reload Flash ROM.
See Reloading MSS Software on page E-2
for details.
If you did not request a NetWare or
TFTP boot, the flash ROM code is
corrupt. The unit will remain in
boot mode.