Ford 2002 F650 Owner's Manual page 21

Volume/power control
Press the control to turn the audio
system on or off.
Turn the control to raise or lower
volume.
If the volume is set above a certain level and the ignition is turned off,
the volume will come back on at a "nominal" listening level when the
ignition switch is turned back on.
Bass adjust
The bass adjust control allows you
to increase or decrease the audio
system's bass output.
Press the TONE control once, then
use the volume knob to adjust the
desired level.
Treble adjust
The treble adjust control allows you
to increase or decrease the audio
system's treble output.
Press the TONE control twice, then
use the volume knob to adjust the
desired level.
Entertainment Systems
TONE
CLK
TONE
CLK
VOL
PUSH
ON
VOL
PUSH
ON
VOL
PUSH
ON
VOL
PUSH
ON
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