Hello Santi90,
Welcome to PL.
Hmmm. Well the pinouts (in no particular order) for 9 pins to an ILDA connector are likely to be X+, X-, Y+, Y-, R+, G+, B+, RGB-, and ground. I would expect X+/X- & Y+/Y- to be grouped together and R+, G+, B+ to be grouped together. Figuring out which is which by experimenting with a 3-5V DC source is possible, but has the potential to damage your laser.
Alternatively, you could dump that control board and tie the appropriate ILDA pins directly to the modulation inputs for your galvos and laser drivers. Its not a small job for someone new to lasers, but those control boards are a potential failure point anyhow and pretty much all of us here on PL despise Chinese driver board with "auto" and "music" modes for both safety and aesthetic reasons.
You might want to list your location as there might be someone close to you that is willing to help. That would be the safest alternative for your laser.
-David
"Help, help, I'm being repressed!"