198000515 - E3510 RADIO - FUNCTIONAL DESCRIPTION (Hi-Fi system, Connect)

FUNCTIONAL DESCRIPTION

Radio P20 is supplied directly (pin 7 of connector A) from the battery via the line of fuse F39 of the junction unit under the dashboard B2 .The radio P20 receives an ignition-operated (INT) power supply (pin 4 of connector A) via the line for fuse F51 of the junction unit under the dashboard B2 .Pin 8 of connector A is earthed.The Body Computer M1 is connected to the radio controls on the steering wheel via clock spring D47: pin 27 of connector H of M1 receives the signals for the buttons on the right of the steering wheel, whilst pin 15 of connector H of M1 receives the signals from the buttons on the left of the steering wheel.The Body Computer M1 receives a direct supply from the battery via the line protected by maxifuse B99 at pin 18 of connector F of the interface with the junction unit under the dashboard B2; the ignition-controlled supply (INT) reaches pin 9 of connector F of the interface with the junction unit B2.The amplifier P70 receives a direct supply from the battery - at pin C8 - via the line for fuse F32 of the junction unit under the dashboard B2; pin C1 of amplifier P70 is earthed.Pin C2 of P70 is connected via a line to radio P20 - pin 6 of connector C - which supplies a positive signal to enable the amplifier to be switched on.The cables with signals leave connector B of P20 for the amplifier P70 (pins B7-C7, C4-B4, B5-C5 and B6-C6)The following cables with signals for the speakers leave connector A of P70;- pins A6 and A7 to the left front speakers P35 and P45;- pins A4 and A5 to the right front speakers P36 and P46;- pins A3 and A2 to the left rear speakers P30 and P47;- pins B2 and B3 to the right rear speakers P31 and P48.The aerial P25 is connected to the radio by means of the special coaxial cable.