UDS1100 User Guide
67
This chapter discusses how you can diagnose and fix errors quickly without having to
contact a dealer or Lantronix. It helps to connect a terminal to the serial port while
diagnosing an error to view summary messages that may display. When troubleshooting,
always ensure that the physical connections (power cable, network cable, and serial
cable) are secure.
Note:
Some unexplained errors might be caused by duplicate IP addresses on the
network. Make sure that your unit's IP address is unique.
When troubleshooting the following problems, make sure that the UDS1100 is powered
up. Confirm that you are using a good network connection.
LEDs
The UDS has the following LEDs, which help you diagnose problems.
Power LED (green)
Ethernet 10/100 Link (yellow = 10 Mb/green = 100 Mb)
Ethernet Half/Full Duplex Activity (yellow = Half Duplex/green = Full Duplex)
Diagnostic (red)
Status (green)
Simultaneously lit Diagnostic (red) and Status (green) LEDs means something is wrong.
If the Diagnostic LED is lit or blinking, count the number of times the Status LED blinks
between its pauses. The following table explains the LED functions:
Table A-1. UDS1100 LEDs
Diagnostic LED
Channel 1 Status LED
Condition
OFF
N/A
No Errors
ON
Blinks 3x/4 seconds
Network controller error
ON
Blinks 4x/4 seconds
Serial number storage checksum
error
ON
Blinks 5x/4 seconds
Duplicate IP address present
Blinks 2x/second
Blinks 5x/4 seconds
No DHCP response
Blinks 2x/second
ON
Setup menu active
A: Troubleshooting
and Contact Information
