Replace 1N4007 reverse-protection diodes with 1N5817 Schottkys

[NeoRecasata]

The reverse-polarity protection diodes are 1N4007 (1A general-purpose rectifier) on both ±12V rails (D3, D4 on the combined sheet; D14/D16 on IDC-only; D9/D10 on JST-only).

At peak transient currents of ~1 A across each rail (8 modules all kicking at once — e.g. a sequencer hitting a clock pulse with multiple VCAs opening), the 1N4007 drops about 1.0 V. Modules see only ~11 V on the rail.

A 1N5817 Schottky (or 1N5818 / SS14) in the same DO-41 package, same orientation, drops only ~0.4 V at 1 A. Recovers ~0.6 V of headroom — meaningful for any module with a 78M05 (which needs 7V minimum input headroom from +12V).

Action:

• Update schematic + BOM: 1N4007 → 1N5817 on D3 / D4 (combined sheet) and the equivalent positions on the IDC-only and JST-only sheets
• No layout changes needed (same DO-41 footprint)
• Re-export the schematic PDF after the change