Circuit Diagram for JVC AX220 Amp?

Hi,

I have a 1987 JVC Amplifier model no. AX220 BK (40 watt) which I'm trying to
get repaired. The parts have melted so I need to find a circuit diagram for
this amp so the repairer can identify what the replacement
resistors/capacitors should be. Does anyone know where I can get hold of a
circuit diagram for this amp?

Any advice or help much appreciated.

Thanks,
Martin