Hi y'all. . . I nee some help regarding my awesome sounding roland mc-202' analogue synth, circa 1983.......
Baiscally I brought it 2nd hand from ebay, with the intention of doing some serious mods on it. The problem is, I open it up to find that there has already been a load of 'mystery' mods done on the machine. Strangest of all - there seems to be an EXTRA component bolted onto the board.
It is a shiney brown circuit board with a chip, and 7 wires which are patched onto the main mc-202 circuit board at various locations. The numbers on the chip read - OC4 4 / HD14015BP.
What the hell is this thing? If it's a midi retrofit, then where's the midi input socket? (I've tried the din-sync and there is no reaction from midi data). I would be really greatful if some one could take a look at the photo and explain to me what this mystery component is........... I really want to get modding on my mc-202, but I really need to make some sense of the previous mods first. Thanks you all very much,,,, photo links below -
http://img136.imageshack.us/img136/5686/whatisthisgn9.jpg