Fujitsu Siemens Computers B6210 manual Troubleshooting the Wlan, Unavailable, Network, Connection

B Series.book Page 98 Friday, May 19, 2006 3:00 PM

L i f e B o o k B 6 2 0 0 S e r i e s - A p p e n d i x A

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	Possible Solution
Unavailable	Incorrect network	Ad hoc connection: verify that the network names (SSID’s) and network
network	name (SSID) or	keys (WEP) of all computers to be connected have been configured
connection	network key	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.
	Weak received signal	Ad hoc connection: Retry connection after shortening the distance to the
	strength and/or link	destination computer or removing any obstacles for better sight.
	quality	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 97.
	The WLAN device	Check if the wireless switch is turned ON. Also verify “Disable Radio” is not
	has been deactivated	checked in “Network setting” window.
	or disabled
	The computer to be	Check if the computer to be connected is turned ON.
	connected is turned
	off
	RF interference from	The use of identical or overlapping RF channels can cause interference with
	Access Points or	the operation of the WLAN device. Change the channel of your Access Point
	other wireless	to a channel that does not overlap with the interfering device.
	networks
	Wireless network	Re-check your Network Authentication, Encryption, and Security settings.
	authentication has	Incorrectly configured security settings such as an incorrectly typed WEP
	failed	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.
	Incorrectly	Recheck the configuration of your network settings.
	configured network	For the method of checking, refer to the following page:·“Connection to the
	settings
		Network” on page 95.
	Incorrect IP address	This only applies to networks using static IP addresses. Please contact your
	configuration	network administrator for the correct settings.

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