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Troubleshooting
6-4
UDS-10 User Guide
Problem/Message Reason Solution
No LEDs are lit. The unit or its power supply is
damaged.
Change power supplies.
The UDS/CoBox will not power
up properly, and the LEDs are
flashing.
Various Consult the LEDs section in the
Introduction chapter or the Quick
Start for the LED flashing
sequence patterns. Call Lantronix
Technical Support if the blinking
pattern indicates a critical error.
The UDS/CoBox is not
communicating with the serial
device it is attached to.
The most likely reason is the
wrong serial settings were
chosen.
The serial settings for the serial
device and the UDS/CoBox must
match. The default serial settings
for the UDS/CoBox are RS232,
9600 Baud, 8 Character Bits, No
Parity, 1 Stop Bit, No Flow
Control.
When you try to enter the setup
mode on the UDS/CoBox via
the serial port, you get no
response.
The issue will most likely be
something covered in the
previous problem, or possibly
you have Caps Lock on.
Double-check everything in the
problem above. Confirm that
Caps Lock is not on.
You can ping the UDS/CoBox,
but not Telnet to the
UDS/CoBox on port 9999.
There may be an IP address
conflict on your network
You are not Telneting to port
9999.
The Telnet configuration port
(9999) is disabled within the
UDS/CoBox security settings.
Turn the UDS/CoBox off and then
issue the following commands at
the DOS prompt of your
computer: ARP -D X.X.X.X
(X.X.X.X is the IP of the
UDS/CoBox)
PING X.X.X.X (X.X.X.X is the IP
of the UDS/CoBox).
If you get a response, then there
is a duplicate IP address on the
network (the LEDs on the
UDS/CoBox should flash a
sequence that tells you this). If
you do not get a response, use
the serial port to verify that Telnet
is not disabled.
With Device Installer you get
the “Wrong Password” error
when you try to upgrade the
firmware.
You have chosen the incorrect
setting for the Existing
Firmware field.
Try upgrading the firmware again,
but make sure to use the correct
setting in the field of Existing
Firmware field.