Fujitsu T4215 T4215 User's Guide - Page 112
Troubleshooting the WLAN
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LifeBook T4200 Series Tablet PC - Appendix A Troubleshooting the WLAN Causes and countermeasures for troubles you may encounter while using your wireless LAN are described in the following table. Problem Unavailable network connection Possible Cause Possible Solution Incorrect network name (SSID) or network key 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 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. For the method of setting network authentication, refer to the section of this chapter related to the configuration tool or utility you are using.· 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. (See Confirming connection on page 103 for more information). Check if the wireless switch is turned ON. Also verify "Disable Radio" is not checked in "Network setting" window. (See Activating the WLAN Device on page 96 for more information). 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 mis-configured LEAP username, or an incorrectly chosen authentication 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 101. This only applies to networks using static IP addresses. Please contact your network administrator for the correct settings. 104