TOSLINK PCB for the Roland SC-88VL
This is a PCB based on the diagram available here: https://web.archive.org/web/20030419115215/http://plaza17.mbn.or.jp/~uyo/special/soundcrd/sc88.htm
A page detailing an installation on a SC-88VL also exists http://www3.big.or.jp/~fujikko/sc88vl/kaizo.html
While this board may also work on the SC-88Pro it is untested. For those who wish to mod their SC-88Pro with Digital output, there is another page detailing the process here:
https://web.archive.org/web/20021101100126/http://www.ne.jp/asahi/fa/efu/sc88p/sc88p_in.html
Bill Of Materials
item required | quantity | explanation
- TC9231N | 1 | DIGITAL AUDIO IC
- 74HC04 | 1 | GENERAL-PURPOSE ICS
- 74HC74 | 1 | GENERAL-PURPOSE ICS
- Generic TOSLINK TX, OR a TOTX170 compatible TOSLINK TX | 1 | optical connectors for output
- 2-contact switch | 1 | For +6dB switching
- Electrolytic capacitor (10μF to 33μF) | 1 | for power stabilization
- Multilayer Ceramic Capacitor (0.1μF) | about 2 pieces | for power stabilization
