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Troubleshooting (Advanced)
Cannot communicate with the access point
zUsing the following procedure, confirm whether the computer’s protocol settings are correct (only when using TCP/IP).
AWhen is displayed on the notification area:
Right-click , and click [Open Network Connections].
When is not displayed on the notification area:
Click [start] - [Control Panel] - [Network and Internet Connections] - [Network Connections].
BRight-click [Wireless Network Connection], and click [Properties] - [General] - [Internet Protocol (TCP/IP)] -
[Properties].
CConfirm the protocol settings, such as IP address, and do the settings properly again.
zDepending on the access point and settings, access may not be accepted unless the computer’s MAC address is regis-
tered beforehand. In this case, check the computer’s MAC address (Î page 128) and register it according to the operat-
ing instructions of the access point.
The communications speed is low
zCommunication speed may decrease if, aside from the access point to which this computer is connected, there is another
access point nearby using the same channel or a similar channel. Change the channel on the connection access point,
and check to see if the speed recovers. Confirm method for changing channels using the access point manual.
zThe communications speed may be reduced for the following reasons. Shorten the distance between the computer and
the access point.
• IEEE802.11g or IEEE802.11b may be affected by a microwave oven or similar, reducing the communications speed
while the microwave oven is in operation.
• IEEE802.11a is more susceptible to interference than IEEE802.11g or IEEE802.11b, and therefore the communications
speed may be reduced if there is a wall between the computer and the access point or if the computer is further away.
zWhen using a wireless LAN in an environment that combines both IEEE802.11g and IEEE802.11b, communication speed
when using IEEE802.11g may decrease.
zUsing the CPU Idle Setting to set to [Performance] may improve this problem.
See “A device connected to a PC Card does not operate correctly” (Î page 127).