Roland Sh1000 Circuit Board Sh1000 VCF, Adsr

I believe this to be a working board, but it it's been quite some time since it was actually in a unit 4 test. What sets this board apart from the norm is the series of transistor array chips noted in the pictures which are TA 58. There is also the infamous red epoxy Shield chip pack entitled pack number 4 in the service manual. Speaking of which, I am also enclosing one page of the schematic that is directly related to this board for reference. Obviously because this is from a 40 year old piece of equipment I am not able to warranty its working status.