I bought a drawing set for my Triple Strike shuffle/puck bowler (Big Strike is same hardware). However by the time I got around to needing it I found out this set contained a sys 6 MPU schematic.
My machine has the Sys 7 MPU. Online I found a assembly drawing w/ test point waveforms, and parts placement. But have not been able to locate the schematic. Anyone have a softcopy they can share ?

SAM_1281 (resized).JPG

Thank you very much. Just what I was looking for.

FYI. For anyone else with this machine. I had an odd problem where it would forget to update all or part of your score sometimes.
However it was doing the math and would have the correct score when it finally updated, if it updated before that game ended.
It would also show the correct winner even if it did not update again at the end of the game.
I replaced on the MPU the 100uf caps, added a 2200uf aluminum & a 10uf tantalum across the 5Vdc near TP9 + 10.
Replaced the 40 pin while I was in there, but suspect the capacitors were the fix for this problem.