VM209 Shutdown Connector

On the VM209 (MM209) mono amp (and also on the stereo VM210/MM210) there is a ‘shutdown’ jumper. The used chip has an active low input (/SD). I guess the jumper delivers a +V to that input, which is probably pulled down by a resistor. Unnumbered onthe VM209, I guess R6 and R7 on the stereo amp.
Does anybody have the real schematic of this VM209 board? I would like to drive shutdown from a µcontroller.