has there been different versions of this product?
Type 1616 (and 1618 for USA) is the first version with 2 x PL output sockets – that is the service manual that is in the Service Manual database. Type 1636 is the later model with one of the PL sockets replaced with a PC input socket. I think that this version was introduced as the Beoport was phased out, hence the naming of the input. The input pins are definitely 4, 2 and 7 – I have it playing at the moment. The connections are mentioned in the Beolink handbook on page 116: (although it states to use the shield as ground – I used pin 7 as shown in some of Peter Pan’s diagrams)
Ok that makes sense. Odd that the pin configuration on this input has to be special, but maybe a way for B&O to reuse the PCB’s in the box without to much changes