Ok...Here is what I got from the PCB.
I have drawn the area of interest only.
Double checked the diagram and it is correct. As for J3 & J5, I think I know what the triac drives And believe me, it ain't easy to figure out which goes where.
The missing parts are Triac T1, MOV R1 and R22 ( connected to triac T5 ).
The IC 4538 is wired as a one shot I guessed, so tht part is left out, only one mono was used. Triggering part consists of bunch of resistors and a cap, sort of a time delay arrangement.
The Board is used to drive some solenoids, I traced it much later. The machine should power up properly even without the board.
I have drawn the area of interest only.
Double checked the diagram and it is correct. As for J3 & J5, I think I know what the triac drives And believe me, it ain't easy to figure out which goes where.
The missing parts are Triac T1, MOV R1 and R22 ( connected to triac T5 ).
The IC 4538 is wired as a one shot I guessed, so tht part is left out, only one mono was used. Triggering part consists of bunch of resistors and a cap, sort of a time delay arrangement.
The Board is used to drive some solenoids, I traced it much later. The machine should power up properly even without the board.
Attachments
-
24.7 KB Views: 24
Last edited: