So I bought one of those ultra cheap CO2 lasers from China. Long story short, I had to replace and laser tube and power supply because improper installation shortened the lifespan of these two to only a couple of hours (but that's another story). I got a new 40W tube, a new power supply and a "display board" which should enable the dreadful MoshiDRAW software to control the laser tube's power, which I could not do when originally got the machine (it had no digital interface between the controller card and the laser power supply).
The controller board I have is made by Moshi and is the MS10105 V4.7. There are a bunch of connectors on the board. My power supply in unnamed as there is no model number, or other data, on it. The display card is the last one in the setup. Please see the attached pictures.
2.jpg shows the connectors on the Moshi controller board, 3.jpg shows the connectors on the power supply. The display board is shown here: http://www.moshidraw.com/images/up_images/2014617115733.jpg
So the easy part is connecting whatever was connected before:
CN4 is connected to X axis motor.
CN3 is connected to Y axis motor.
CN5 is connected to the power supply and I have a dedicated cable for that.
Now:
CN21 - ???
CN22 - ???
CN6 should be connected to CN8 according to what Moshi told me. The cable that came with the board and also photographed on some manual Moshi has shows that from CN8 on the display board only Rx & Tx are connected to CN6's two internal pins (farther away from PCB edge). There are for communication only so no power is applied to the display PCB from that connection. This is, of course, a problem as the board must be powered in order to communicate. The connector on the right of the display board, CN7 seems to fit a cable that goes to the power supply into 2 connectors with 2 and 3 pins. There are shown in 2.jpg as K+ / K- and G / IN / 5V. You can see that this doesn't match up the text on the display board perfectly and there are actually P+ and P- connections on the power supply - they are simply not populated.
So now I connected the display board as I mentioned above and when the laser turns on and starts to fire. The test laser button does nothing. Only the power button on the display board (which turns off the display) stops the laser.
Any thoughts or experience with similar situations?