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Table 7. Quick tips for troubleshooting
Possible SolutionProblem
Check with your mobile broadband service provider to ensure that good coverage
exists in the area.
You cannot connect to the
Internet over the mobile
broadband connection.
See also Troubleshoot the
Mobile Broadband Internet
Connection on page 79.
Make sure that your mobile broadband account is active.
Make sure that the SIM card is inserted correctly into the modem (see Install the
Nano SIM Card on page 8 ).
If SIM security is enabled, make sure that you entered the PIN correctly to unlock
the SIM card (see Enter the SIM PIN to Enable the Modem to Connect to the Internet
on page 42). A locked SIM card prevents the modem from connecting to the mobile
broadband network.
Make sure that the Ethernet cable is securely plugged in.You cannot connect over an
Ethernet cable to the modem.
Make sure that your computer or device does not use a static IP address but is
configured to receive an IP address automatically with DHCP.
Verify Normal Behavior With the LEDs
When you turn on the power on the modem, the Power LED, Signal Strength LED, and
LAN LED light as described here:
1.
When power is first applied, the Power LED lights solid amber.
2.
After approximately 12 seconds, the LAN LED lights solid green and then goes
off again.
3.
After approximately 15 seconds, the following occurs:
•
The Power LED lights solid green.
•
If the modem detects mobile broadband coverage, the Signal Strength LED
indicates the quality of the coverage when the modem is connected to a LTE,
4G, or 3G mobile broadband service.
•
If the Gigabit Ethernet port is connected to a device over an Ethernet cable, the
LAN LED lights solid green.
User Manual76Alerts and Troubleshooting
NETGEAR 4G LTE Modem LM1200
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