Fujitsu LIFEBOOK N6400 Bedienungsanleitung PDF herunterladen (Seite 98)

LifeBook N Series User’s Guide

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

network

connection

Incorrect network

name (SSID) or

network key

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.

Weak received signal

strength and/or link

quality

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 short-

ening the distance to the access point or removing any obstacles for

better sight.

The WLAN device

has been deactivated

or disabled

Check if the wireless switch is turned ON. Also verify “Disable Radio” is

not checked in “Network setting” window.

The computer to be

connected is turned

off

Check if the computer to be connected is turned ON.

RF interference from

Access Points or

other wireless

networks

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.

Wireless network

authentication has

failed

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 authentication method will cause the LAN device to associate

but not authenticate to the wireless network.

Incorrectly

configured network

settings

Recheck the configuration of your network settings.

For the method of checking, refer to the following page:·“Connection to

the Network” on page 89.

Incorrect IP address

configuration

This only applies to networks using static IP addresses. Please contact

your network administrator for the correct settings.

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