Lantronix
SM24TBT2DPA Install Guide
33737 Rev. L
Page
27
of
38
LED Troubleshooting
Use the table below to troubleshoot problems by taking actions based on the suggested solutions within.
Table 5: Troubleshooting
Symptom
Possible Cause
Suggested Solution
SYS
TEM LED is
Off
The switch is not
receiving power.
1. Check if correct power cord is connected firmly to the switch and to
the AC outlet socket.
2. Cycle switch by unplugging and plugging the power cord back into
the switch.
3. If the LED is still off, try to plug power cord into a different AC outlet
socket to make sure correct AC source is supplied.
SYS
TEM LED is
RED
An abnormal
state has been
detected by the
switch.
Check the switch system log via the Web UI for any abnormal
state (e.g., exceeding operating temperature range) and take
corresponding actions to resolve.
Port Status LED is
Off in
Link/Act/Speed
Mode
The port is not
connected or the
connection is not
working.
1. Check if the cable connector plug is firmly inserted and locked into
the port at both the switch and the connected device.
2. Make sure the connected device is up and running correctly.
3. If the symptom still exists, try a different cable or different port, in
order to identify if it is related to the cable or specific port.
4. Check if the port is disabled in the config settings via the Web UI.
Port Status LED is
Off in PoE Mode
The port is not
supplying power
1. Check if the cable connector plug is firmly inserted and locked into
the port at both the switch and the connected device.
2. Make sure that correct Ethernet cables are used.
3. If the symptom still exists, try a different cable or different port, in
order to identify if it is related to the cable or specific port.
4. Check if the port is disabled in the config settings via the Web UI.
