Radio/Stereo: Description and Operation

Circuit Operation

Audio
Battery voltage is always applied to the terminal 2 (R) of AUDIO through "ROOM (15 A)" fuse for the memory related functions, which retains the station presets when the AUDIO is turned OFF. With the ignition switch in "ACC" or "ON", battery voltage is applied to the terminal 1 (BR/R) of AUDIO through the "AUDIO (10 A)" fuse. The AUDIO has amplifier and supplies the signal directly to the speakers. The AUDIO is grounded permanently at terminal 11(B).