Electronics Forum | Mon Aug 10 02:59:10 EDT 2020 | jmelson
I need a Sanyo Denki 103H7570-7024 stepper motor to repair a Quad QSA-30A machine. Some idiot put a 2-phase motor in there! It is supposed to be a 5-phase motor. If anybody knows where to get these, please let me know. Apparently, the same motor
Electronics Forum | Mon Aug 17 15:19:16 EDT 2020 | jmelson
I have a (new to me) Quad QSA-30A that I just got about a week ago. At first, I could get it to go ready most of the time, now it will never go ready. I have traced the ready button into the DPRAM board and the logic is OK all the way into one of t
Electronics Forum | Sat Aug 22 16:53:32 EDT 2020 | jmelson
I'm trying to diagnose a Quad QSA-30A machine that won't go ready. I have the machine technical drawings, they have overall machine schematics and cable wiring on most of the cables, but that's all. Does anyone have access to the schematics of the
Electronics Forum | Mon Dec 17 09:59:50 EST 2018 | crstarr
Hello - We have two Quad QSA-30As that won't boot. These two machines haven't been run since October (they are backup machines), and there were some heavy lightning storms that month. We think both mother boards may have been zapped. We replaced
