Power LED Bar Blinks Amber Fast and an Individual Signal and
Strength LED Bar Lights Solid Green
If the Power LED
bar blinks amber fast and an individual signal strength bar lights solid green while
others are off, one of the conditions that is described in the following table occurred. Bar 1 is the shortest
and leftmost bar. Bar 5 is the tallest and rightmost bar.
Table 9. Error conditions indicated by the Signal Strength LED bars
Possible Solution
Bar 5
Bar 4
Bar 3
Bar 2
Bar 1
Condition
Turn off the modem for a while and move the modem to
a location with a moderate temperature.
Green
Off
Off
Off
Off
System too hot
Make sure that you use the power adapter that came in
the product package.
Off
Green
Off
Off
Off
System over voltage
Turn off the modem for a while, and then turn it back on.
If the condition does not improve, contact technical support
at
Install or reinstall the micro SIM card.
Off
Off
Green
Off
Off
Micro SIM card out or
not correctly installed
Turn the power off, wait 10 seconds, and turn on the
modem to see if it recovers. If the Power LED bar is still
blinking red fast but no individual Signal Strength bar lights
solid green one minute after power-up, do the following:
•
Turn the power off one more time, wait 10 seconds,
and turn on the modem to see if it finally recovers.
•
Clear the modem’s configuration to factory defaults
(see
Return the Modem to Its Factory Default Settings
on page 62).
Off
Off
Off
Off
Off
Unknown error
If the error persists, most likely a hardware problem
occurred. For recovery instructions or help with a hardware
problem, contact technical support at
.
LAN LED Is Off
If the LAN LED
bar is off when you connect a device to the Gigabit Ethernet port of the modem, check
the following:
•
The Ethernet cable connections are secured at the modem and at the device at the other end of the
cable.
•
The power of the device at the other end of the cable is turned on.
•
You are using the correct cable.
Alerts and Troubleshooting
88
LTE Modem Model LB2120
