Toshiba Satellite A500D Series Maintenance Manual page 131

3. Tests and Diagnostics
Mechanical type buttons x 8 to relate with above showed.
BUTTON A  ECO
BUTTON B Quick start
BUTTON C  Play/Pause
BUTTON D  FR
BUTTON D  FF
BUTTON D  Mute
BUTTON D  Volume -
BUTTON D  Volume +
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Satellite A500D / Satellite A505D / Satellite A507D / Satellite Pro Series T&D