From this thread:
http://forums.windowscentral.com/nok...0/249859-2.htm
I know the 920 qi had 4 contacts, wc_det, wc_EN, gnd, 5v.
From the diagram above....
x3305 is the circuit ground
x3304 goes into an ic and looks like it is the charging circuit
x3303 is marked wc.det maybe charge detect
x3302 wc.en maybe enable
02 & 03 just have a bunch of diodes capacitors and resisters which appear to allow or stop current flow in certain directions.
I also have several 920 Qi charging circuits around. With just a little bit of guidance I'd be willing to test things out.