Dolby SR Cat no. 431 pinout or service manual needed

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Dolby SR Cat no. 431 pinout or service manual needed

Postby jxalex » Sat Feb 04, 2017 2:48 pm

I got these Cat 431 Dolby SR cards, but where to get the PINOUT atleast for input, output, voltages, and where to connect the dolby noise generator (OR has it built in the card?).

There is a rack module where those cards go in, but I havent found pinout or schematic.
jxalex
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Re: Dolby SR Cat no. 431 pinout or service manual needed

Postby jxalex » Thu Mar 16, 2017 5:12 pm

well I traced now out the pinout some time ago and its logic circuit, and could share the information here, so everyone else could solder some wires to use the SR units for music production.
2 dual power supply rails needed (one with 12..15V and second with ca 25..30V)
1 control voltage supply +12V

but it is not clear how they count the pins, so it is unclear how to label it.
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