OSKITONE OKAY 2 Synth, Инструкция по сборке

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● Failing those and if you have an oscilloscope, you can
find where the circuit is breaking by methodically
checking it at each step while holding down a button
(or temporarily replacing 555_4040’s R2 with a
resistor). As soon as one of these is not true, everything
thereafter will not be true.
○ The 0 header by the 555 should have a very high
frequency pulse wave
○ 4040 will output lower frequency square waves
○
The 4040 outputs will all match their pins on
the octave selector’s rotary switch
○
The rotary switch’s common pin will match the
386 input pad,
○
The right VOL pad connects to board’s input. Its
middle pad goes to the IC’s input. Its left pad
goes to ground. The volume potentiometer
should match these pads.
○
The 386 IC’s output and speaker output will
have a large voltage square wave
●
If all else fails, contact your friendly Oskitone
representative! :)
Final assembly
If all is well and the electronics are working correctly, we
assembly them into the enclosure.
1. PCBs
a. Slide a hex nut into each of the PCB posts on
the enclosure bottom half
b. Screw PCBs onto their posts. From left to right:
555_4040, 386, bus. Tighten just enough to hold
the boards in place without rattling.
​
Don’t
over-tighten!
c. For the OKAY 1, screw SPST_VR onto posts like
the other boards.