My repaired Gulbransen Organs Leslie board, must be tested before it goes back in the machine,
after I make my changes to the board, and fix the busted thyristor.
The schematic says --
logic board on pin 3 (switched ground)
+20v logic board on pin 4
power supply A.C com on pin 8
power supply S.W. A. C. on pin 9
motor com(slow leslie) on pin 7
motor com(fast leslie) on pin 5
fast motor on pin 1
fast motor on pin 2
I need to know -
what is a logic board?
whats the difference between a logic board and a logic board +20v?
what is A.C. com?
and what is a S.W. A.C.
and how much A.C. should I use in the testing procedures?
after I make my changes to the board, and fix the busted thyristor.
The schematic says --
logic board on pin 3 (switched ground)
+20v logic board on pin 4
power supply A.C com on pin 8
power supply S.W. A. C. on pin 9
motor com(slow leslie) on pin 7
motor com(fast leslie) on pin 5
fast motor on pin 1
fast motor on pin 2
I need to know -
what is a logic board?
whats the difference between a logic board and a logic board +20v?
what is A.C. com?
and what is a S.W. A.C.
and how much A.C. should I use in the testing procedures?
