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Monitor TP1 (On PCB V0.2 there is an exposed pad on P103)
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Adjust P103 for 10.0V
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Set panel controls, [DECAY] and [RELEASE] to minimum, [ATTACK] to '2' and [SUSTAIN] to maximum
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Set P106 to its mid-position
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Monitor the [ADSR] output
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Use the [MANUAL] button to generate an envelope
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The envelope will appear somewhat similar to that in Figure 1 where it has a step in the rising edge (area in circle)
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Turn P106 clockwise 1-turn
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Repeat steps (6) through to (8) until the step is removed as shown in Figure 2