I updated some information regarding the DAMP function/switch on the Microcon page. In brief:
There are two revisions to the PCB, 1.2 and 1.3. The only difference between the revisions is the wiring to the DAMP switch. Nyle noticed an error in his schematic for the DAMP switch which only requires you to swap a couple of wires to the switch.
To make the DAMP function properly on a Rev 1.2 PCB, you need to connect the wires from pads 2 and 6 on the PCB DAMP switch connector to the same end of the switch. If you want the DAMP function to be on when the switch is up, then this end of the switch should be down. In other words, the end opposite the direction of the toggle handle on the switch.
The wires from pads 3 and 5 should be on the opposite end. So, in a rough diagram, the switch pins should be connected like this. In the following, the numbers are the numbers of the pads as labeled on the PCB and shown in the schematic.
5 – 3 Top of switch
4 – 1 Middle of switch
6 – 2 Bottom of switch
On the Rev 1.3 PCB, the switch should be wired as shown in the schematic with the wires from pads 3 and 6 on the same end and on the bottom if you want DAMP to be on with the switch in the up position. In the following, the numbers are the numbers of the pads as labeled on the PCB and shown in the schematic.
5 – 2 Top of switch
4 – 1 Middle of switch
6 – 3 Bottom of switch