Data bus: digital audio control module A- no communication
Data bus: personal computer – no communication
Data bus: television – no communication
Data bus: digital disc player/changer module D – no communication
Data bus: digital disc player/changer module C – no communication
Data bus: digital disc player/changer module B – no communication
Data bus: digital disc player/changer module A – no communication
Data bus: audio unit output amplifier- no communication
Data bus: aerial module – no communication
Data bus: radio – no communication
