Chevrolet 1995 Astro Cargo Owner's Manual page 128

Upper Knob (VOL-PROG-RCL)
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The upper knob has these five functions:
Turn it to switch the system on and off.
Turn it to control the volume,
Press it to display the time when the ignition is off.
Press it to change between the clock and the radio station frequency
Press it to change sides of a tape when a cassette is playing.
displayed when the radio is on.
BAL (Balance)
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The control ring behind the upper knob adjusts the
leftkight speaker balance.
Lower Knob (TUNE-AM-FM)
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The lower knob has two functions:
Turn it to tune in radio stations.
Press it to change between the AM and FM bands.
FADE - The control ring behind the lower knob adjusts the fronthear
speaker balance.
SEEK
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Press the SEEK button to cause the receiver to SEEK the next
higher station and stop.
SCAN
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Press the SCAN button to hear each station for a few seconds.
Push it again when you reach the station you want to listen to and the radio
will stop scanning. "SCAN" appears in the display.
Pushbuttons - The four pushbuttons let you return to favorite stations. To
set the pushbuttons for up to fourteen favorite stations (7 AM and 7 FM):
1. Tune
in the desired station.
2. Press the SET button. "SET" appears in the display momentarily.
3. Within 5 seconds, press one of the four pushbuttons to store the station.
Whenever you press that button, the preset station will return.
In addition to the four stations set as above, up to three additional stations
may be preset on each band by pressing two adjoining pushbuttons at the
same time. Then do the following:
1. Tune in the desired station.
2. Push the SET button. "SET" appears in the display momentarily.
3. Within 5 seconds, press any two adjoining pushbuttons at the same time.
(The station will return when the same two buttons are pressed again.)
Repeat these steps for each pair of buttons.
TREBLE
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Slide the TREBLE lever up to increase the treble response. If the
station is weak or noisy, slide the TREBLE lever down to reduce the noise.
BASS
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Slide the BASS lever up to increase the bass response. Adjust the
BASS lever to give a pleasing sound to your ear.
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