Sony SA-Z1 Operating Instructions Manual page 15

 DIMMER button
Adjusts the brightness of the display
window and the power indicator. Each
time you press the button, the
brightness of the display window
changes as follows:
BRIGHT  DARK  DISPLAY OFF 
BRIGHT ...
If you operate the speakers or the
remote control's buttons while the
display is off, the display window and
power indicator appear in the DARK
brightness level.
 MUTING button
Turns off the sound temporarily. While
muting is on, [MUTING] is displayed in
the display window. To cancel muting,
press this button again or increase the
volume level with the volume knob on
the speaker or with VOLUME + on the
remote control.
 / buttons
While the menu is shown, select the
item that you want to set.
* Can also be operated using the buttons on
speaker A.
US
15
US