Sony PCWA-C500 Operating Instructions Manual page 60

Symptom
I cannot remember the
WEP Key.
No communication is
available even though
my computer is
located within 150 feet
(50 m) of the Access
Point, in direct line of
sight.
60
Cause/Remedy
c When using an Access Point, reset the Access Point to its
defaults. For further information about how to reset the
Access Point, see the Access Point Operating Instructions.
c When using a Wireless LAN PC Card in Peer to Peer
Connection Mode, delete the network settings registered
on each computer connected to the network, then
reconfigure the computer's wireless network settings.
c The actual communication distance depends on the
installation site and surrounding conditions. Move your
computer closer to the Access Point.