Palsonic 5169M - Manual (Page 6)

The remote controller
Standby
Channel direct select
Sleep timer
Picture mode selection
*Sound system select
Previous channel
On screen recall
Colour system select
Picture control
Volume control
Channel select
* NOTE: this TV model's RF sound system is BG only. Therefore the
SYS1/2 button on the remote controller is ineffective in sound system
selection. Similarly in the Preset and Function menus the SYS item (sound
system selection item) is ineffective.
6
Sound mute
TV/AV select