User`s guide

Chapter 21 Troubleshooting
User’s Guide
220
the values are correct. If the values are incorrect, enter the correct frequency settings in
the ADVANCED > WAN Configuration > WiMAX Configuration screen. If you are
unsure of the correct values, contact your service provider.
5 If you are trying to access the Internet wirelessly, make sure the wireless settings in the
wireless client are the same as the settings in the AP.
6 Disconnect all the cables from your WiMAX Modem, and follow the directions in the
Quick Start Guide again.
7 If the problem continues, contact your ISP.
u I cannot access the Internet any more. I had access to the Internet (with the
WiMAX Modem), but my Internet connection is not available any more.
1 Check the hardware connections, and make sure the LEDs are behaving as expected. See
the Quick Start Guide and
Section 1.2.1 on page 33.
2 Disconnect and re-connect the power adapter to the WiMAX Modem.
3 If the problem continues, contact your ISP.
u The Internet connection is slow or intermittent.
1 The quality of the WiMAX Modem’s wireless connection to the base station may be
poor. Poor signal reception may be improved by moving the WiMAX Modem away
from thick walls and other obstructions, or to a higher floor in your building.
2 There may be radio interference caused by nearby electrical devices such as microwave
ovens and radio transmitters. Move the WiMAX Modem away or switch the other
devices off. Weather conditions may also affect signal quality.
3 As well as having an external antenna connector, the MAX-210HW2 is equipped with an
internal directional antenna. If you know the location of the base station, orient the front
of the WiMAX Modem (the side with the LEDs) towards the base station. If you do not
know the location of the base station, experiment by moving the WiMAX Modem while
observing the Strength Indicator LEDs for an increase in received signal strength. The
MAX-200HW2 and MAX-230HW2 do not have internal antennas.
4 There might be a lot of traffic on the network. Look at the LEDs, and check
Section 1.2.1
on page 33
. If the WiMAX Modem is sending or receiving a lot of information, try
closing some programs that use the Internet, especially peer-to-peer applications.
5 Disconnect and re-connect the power adapter to the WiMAX Modem.
6 If the problem continues, contact the network administrator or vendor, or try one of the
advanced suggestions.