LPSU reverse engineering from db9 connector

[limatech]

Hello,

Is there any way to check which wires from lpsu are for PWM and TL ( gnd is obvious black )

I have YM LS120 power supply with no diagram, ( it is from yue ming laser that i upgraded to X7)
i opened the LPSU, there is no marking on board , just connector.

On LPSU is DB9 connector.

Is there a way to test to find which wire is what?

I have pictures from old board ( with wires connected) but terminals are just numbered ( i can't download diagram from ymlaser because that file is missing.

Thanks.

[Techgraphix]

Found this.. Maybe it helps:
http://www.laserpsu.com/co2-laser-power ... p-786.html

Kees

[limatech]

Thank you Techgraphix

Laser fires when i press test on power supply, when connected to DSP absolutely nothing.
I just dont want to waste more time so i just ordered http://www.lightobject.com/80W100W-PWM- ... V-P73.aspx

After tube, DSP, lenses, etc. and now power supply i hope to start cutting soon.