Radio, Stereo, and Compact Disc: Description and Operation

RADIO

The Radio receives power at all times to sustain memory for the clock and station presents. It receives battery voltage with the Ignition Switch in ACCY or RUN, which turns on the Radio.

COMPACT DISC AND CASSETTE PLAYER

If equipped, the Compact Disc or Cassette Player is part of the Radio Unit. When operating, the same power required by the Radio is necessary for Tape or Disc Player operation.

SUBWOOFER AMPLIFIER

The Subwoofer Amplifier is controlled by the Fog Lamp/Audio Switch Assembly. The Amplifier supplies 8 volts to the Fog Lamp Audio Switch Assembly. Amplifier gain is controlled by the Gain Control in the Fog Lamp/ Audio Switch Assembly. Variable voltage is fed back to the Amplifier. This voltage controls amplification of the subwoofers in the rear speakers.

ILLUMINATION

With the Radio turned on, the VF display lights to a fixed brightness. When the Park Lights or Headlights are turned on, battery voltage is applied to the "lights on input" of the Radio and the VF display dims to the present dimmer control setting. With the lights on, the Radio receives a Pulse Width Modulated (PWM) illumination signal from the Light Switch. The PWM signals control the VF Radio illumination which varies as the dimmer control is adjusted. The Radio buttons and face illumination is incandescent. They light when the lights are turned on, receiving power from the panel light input. The incandescent illumination brightness is controlled by the variable voltage panel light input.