Fujitsu E8420 manual Problem, Possible Cause, Possible Solution, Appendix A WLAN User’s Guide

Problem	Possible Cause	Possible Solution
Unavailable	The computer to	Check if the computer to be connected is turned ON.
network	be connected is
connection	turned off
(continued)
	RF interference	The use of identical or overlapping RF channels can cause interference
	from Access	with the operation of the WLAN device. Change the channel of your
	Points or other	Access Point to a channel that does not overlap with the interfering
	wireless networks	device.
	Wireless network	Re-check your Network Authentication, Encryption, and Security
	authentication has	settings. Incorrectly configured security settings such as an incorrectly
	failed	typed WEP key, a mis-configured LEAP username, or an incorrectly
		chosen authentication 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 settings
	Incorrect IP	This only applies to networks using static IP addresses. Please contact
	address	your network administrator for the correct settings.
	configuration

169 - Appendix A: WLAN User’s Guide