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STEP 20: INSTALL VOICE CARDS 1A TROUGH 4A
https://youtu.be/RPQ5Z8sHOFY
Each voice card is powered directly from the ~+18.5V/-18V power from the main PSU and have their own +/-15V regulators on-
board.
Power off the VS-1
Install Voice Card 1A
Test the +18.5V & -18V supply directly at the PWR connector.
Continue to install voice card 2A, 3A & 4A while testing the ~18.5V & -18V supply after each card is plugged in. Make sure ti turn
off the unit before plugging in each card.
After installing the first four cards the ~+18.5V rail may dip under load. This is normal. Readjust the PSU trimmer to bump the
voltage back up to +18.5V.
At this time do not install the last four voice cards, this will be done later. At this point your build should look like below:
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