Troubleshooting The Wlan; Troubleshooting Table - Fujitsu LifeBook A3110 User Manual

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Troubleshooting the WLAN

TROUBLESHOOTING TABLE

Causes and countermeasures for troubles you may encounter while using your wireless LAN are described in the
following table.
Problem Possible Cause
Unavailable Incorrect network
name (SSID) or
network
network key
connection
Weak received signal
strength and/or link
quality
The WLAN device
has been deactivated
or disabled
The computer to be
connected is turned
off
RF interference from
Access Points or
other wireless
networks
Wireless network
authentication has
failed
Incorrectly
configured network
settings
Incorrect IP address
configuration
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Possible Solution
Ad hoc connection: verify that the network names (SSID's) and network
keys (WEP) of all computers to be connected have been configured
correctly. SSID's and WEP key values must be identical on each machine.
Access Point (Infrastructure) connection: set the network name (SSID) and
network key to the same values as those of the access point.
Set the Network Authentication value identically to that of the Access Point.
Please consult your network administrator for this value, if necessary.
Ad hoc connection: Retry connection after shortening the distance to the
destination computer or removing any obstacles for better sight.
Access Point (Infrastructure) connection: Retry connection after shortening
the distance to the access point or removing any obstacles for better sight.
To check the wave condition, refer to the following page:· "Confirming the
status of the radio" on page 91.
Check if the wireless switch is turned ON. Also verify "Disable Radio" is not
checked in "Network setting" window.
Check if the computer to be connected is turned ON.
The use of identical or overlapping RF channels can cause interference with
the operation of the WLAN device. Change the channel of your Access Point
to a channel that does not overlap with the interfering device.
Re-check your Network Authentication, Encryption, and Security settings.
Incorrectly configured security settings such as an incorrectly typed WEP
key, a misconfigured LEAP username, or an incorrectly chosen authentica-
tion method will cause the LAN device to associate but not authenticate to
the wireless network.
Recheck the configuration of your network settings.
For the method of checking, refer to the following page:·"Connection to the
Network" on page 89.
This only applies to networks using static IP addresses. Please contact your
network administrator for the correct settings.