1998 Chevrolet Astro Owner's Manual - Page 166

SCV: Your system has a feature called Speed-Compensated-Volume (SCV). With SCV, your audio system adjusts automatically to make up for road and wind noise as you drive. Set the volume at the desired level. Move the control ring behind the upper knob to the right to adjust the SCV. Then, as you drive, SCV automatically increases the volume, as necessary, to overcome noise at any particular speed. The volume level should always soundthe same to you as you drive. If you don't want to use SCV, turn the control all the way down. Each notch on the control ring allows for more volume compensation at faster vehicle speeds. Finding a Station AM-FM: Press this button to switch between AM, FMl and FM2, The display will show your selection. TUNE: Press this knob lightly so it extends. Turn it to choose radio stations. Push the knob backinto its stored position when you're not usingit. SEEK: Press the right arrowto tune to the next higher station and the left arrow tune to the next to lower station and stay there. The sound will mute while seeking. SCAN: Press and hold SEEK for two seconds until SCAN appears on the display. SCAN allows you to listen to stations for a few seconds, The receiver will continue to scan and momentarilystop at each station until you press the button again. The sound will mute while scanning. PUSHBUTTONS: The six numbered pushbuttons let you return to your favorite stations. You can set upto 18 stations (six AM, six FM1 and six FM2). Just: 1. Turn the radioon. 2. Press AM-FM to select the band. 3. Tune in the desired station. 4. Press AUTO TONE to select the setting you prefer. The 5 . Press and hold one of the six pushbuttons. sound will mute. When it returns, release the button. Whenever you press that numbered button, the station you set will return and the tone you selected will be automatically selected f c - .hat button. 6. Repeat the stepsfor each pushbutton. 3-14