Korg Poly-61 Voice-Board NP

KLM-508A

(click image for large version)

This is the new production version of the voice board. It looks a bit more compressed than the old version, as it also keeps the antilog amp now and so connects directly to the CPU board via another foil cable. Trimpots for EG are now also reachable without having to remove the keyboard, and the cables to the CPU board are no longer detachable.

For calibration, the following spots are important

1 - Test point for DCO1 output	1 - Gate connector
2 - Clock input for digital control of DCO1/DCO2	2 - VCA ADJ - adjust VCA output level
	3 - EG ADJ - adjust envelope generator speed
	4 - FC ADJ - adjust filter cutoff frequency
	5 - RESO ADJ - adjust filter resonance level

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