Sony KD-50SD8005 Referenz-Anleitung Seite 18

The , CH +/–,  +/–,  and TV buttons
cannot be located on the TV.

See below illustration for location of the buttons
on the TV.
Rear of TV
KD-65SD8505, KD-55SD8505 only
Except KD-65SD8505, KD-55SD8505
The illumination LED is turned on.

If you do not wish to light up the illumination LED,
you can turn it off.
Press HOME, then select [Settings] 
[Illumination LED]  [Off].
KD-65SD8505, KD-55SD8505 only
Except KD-65SD8505, KD-55SD8505
Cannot connect to a wireless router by WPS
(Wi-Fi Protected Setup).
If you use WEP security, select [Easy] 

[Wi-Fi]  [Connect by scan list]. Then, select the
network name (SSID) you want to connect.
18
GB
Cannot find the required network name in
network setup.

Select [[Manual entry]] and press
network name.
to enter