User’s Guide 229
CHAPTER 20

Troubleshooting

This chapter offers some suggestions to solve problems you might encounter. The
potential problems are divided into the following categories:
Power, Hardware Connections, and LEDs
WiMAX Modem Access and Login
Internet Access
Phone Calls and VoIP
Reset the WiMAX Modem to Its Factory Defaults

20.1 Power, Hardware Connections, and LEDs

The WiMAX Modem does not turn on. None of the LEDs turn on.
1Make sure you are using the power adapter or cord included with the WiMAX
Modem.
2Make sure the power adapter or cord is connected to the WiMAX Modem and
plugged in to an appropriate power source. Make sure the power source is turned
on.
3Disconnect and re-connect the power adapter or cord to the WiMAX Modem.
4If the problem continues, contact the vendor.
One of the LEDs does not behave as expected.
1Make sure you understand the normal behavior of the LED. See Section 1.2.1 on
page 34 for more information.