Audi Workshop Service and Repair Manuals > A4 Mk3 > Vehicle electrics | System description - infotainment and audio output (MOST) | Self diagnosis, V.A.G Inspection Service | Function - Basic audio playback

General notes, components used

The following components are required for audio playback:

1 -	at least one of the following audio sources:

t	CD changer -R41-

t	Connection for external audio sources -R199-

t	MiniDisc player -R153-

t	TV tuner -R78-

t	Navigation system with CD drive control unit -J401-

2 -	Digital sound package control unit -J525-

3 -	Loudspeakers

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