Whats the difference with s2000 and barcrest. I'm familiar with igt s2000's , bally s6000 s9000's. I know the mpu board is in the back of this one not like the s2000 in the front left side. Also it has the top cabinet bonus game with power and board up there.
My Barcrest uses an S+ cabinet.
If your machine has door I/O's, then somewhere in the machine settings "enables" the top box, or you would have to enable it by using a setchip.
However, S+'s have MPU in 2 locations, left side wall or back wall.
S2000's only place the MPU's on the left side wall.
Yours is probably like mine but without the Barcrest tags on the side.
If you can give me the chip numbers (SP & SS), maybe I can dig up some info for ya?