1997 Buick Century Owner's Manual - Page 166

AM-FM: Press this button to play the radio when a tape is in the player. AM-FM Stereo with Compact Disc Player and Automatic Tone Control(If Equipped) SOURCE: Press this button to change to the tape function when the radio is on. TAPE PLAY with an arrow will appear on the displaywhen the tape is active. EJECT Press this button to remove the tape. The radio will play. If you leave a cassette tape in the player while listening to the radio, it may become warm. CLN: If this message appears on the display, the cassette tape player needs to be cleaned. It will still play tapes, but you should clean it assoon as possible to prevent damage to the tapes and player. See "Care of Your Cassette Tape Player" in the Index. After you clean the player, press and hold EJECT for five seconds to reset the CLN indicator. The radio will display --- to show the indicator was reset. Playing the Radio VOLUME: Press this knob to turn the system on and off. To increase volume, turn the knob to the right. Turn it to the left to decrease the volume. 3-2?