*
RECALIBRATE THE OSCILLATORS AFTER DOING ANY OF THE ABOVE
MODIFICATIONS
*********A**********
1. Check Mains voltage
setting.
2. Plug in Card A only. /!\
3. PSU Switch on. Adjust
VR2
for +12 volts. // voltmetre
4. PSU Adjust VR1
for -9 volts. // voltmetre
5. Plug in Cards B and C.
6. PSU
Recheck +12V and -9V. // voltmetre
7. REVERB Adjust VR3
so that mixing occurs above 2 on the Reverb Mix knob.
8. REVERB
Check the voltage control of reverb mix.
9. O/P Adjust VR4
and VR5
for zero residual signals. // osc signal in 1 et 2 / volumes à
0 // pas de son OK
10. O/P Check the tracking of Level knobs
4-5-6.
*********B**********
11. ENV Set Trapezoid speed to
65Hz with VR12
// env 0 0 0 0 0 0 trapez out dans in 1 65Hz // voltmeter freq hz ou
soft
12. ENV Set VR13
clockwise. // osc dans env in, volume env 0
13. ENV Adjust VR7
for minimum residual signal. // pas de son OK
14. ENV Adjust VR13
until signal just reappears, then back off to zero. // pas de son
OK
15. ENV Check that maximum On time is at least 4 seconds.
16.
ENV Check that maximum Decay time is at least 15 seconds. // ON
R148
17. ENV Check that recycling occurs with Off set at 5.
18.
ENV Check that recycling does NOT occur with Off set abaove 7. // OFF
R143
19. ENV Check that Trigger functions and does not jam.
20.
FILT With filter in oscillation and Frequency control on 5, set VR6
for 261Hz.
21. FILT Check that Response control gives filtering
below 5 and oscillation above.
22. FILT Check the shape of the
oscillating Sine wave.
23. RM Adjust VR10
for fundamental rejection on A residual signal. osc 1 dans A in //
pas de son OK
24. RM Adjust VR9
for 1st harmonic rejection on A residual signal.
25. RM Adjust
VR11
for fundamental rejection on B residual signal. osc 2 dans B in //
pas de son OK
26. RM Adjust VR8
for 1st harmonic rejection on B residual signal.
27. RM Check for
frequency doubling when both inputs are the same.
28. I/P Check
both channels for correct gain on both Hi and Lo
inputs.
*********C**********
29. OSC1 Adjust VR17
for best sine wave shape. // oscillo
30. OSC1 With Frequency on 6
set VR15
for 261Hz.
31. OSC1 With Frequency on 8 add R290 (sot) to achieve
2088Hz.
32. OSC1 Recheck last two steps.
33. OSC1 Check both
waveforms.
35. OSC2 Set VR20
half-way.
36. OSC2 Pad shape resistors R227/R228 to achieve
correct shapes.
37. OSC2 With Frequency on 6 set VR19
for 261Hz.
38. OSC2 With Frequency on 8 add R291 (sot) to achieve
2088Hz.
39. OSC2 Recheck last two steps.
40. OSC1/2 Adjust VR20
to achieve oscillator tracking to 2kHz.
41. OSC3 Pad shape
resistors R261/R262 to achieve correct shapes.
42. OSC3 With
Frequency on 8 set VR21
for 63Hz.
43. NOISE Select a (transistor) diode for good bandwidth
and level. // il met du temps à arriver
44. NOISE Adjust
VR22
for around 3 volts p-p noise.
45. NOISE Check the operation of the
noise colour control.
46. METER Set signal zero on the meter
itself and check operation.
47. METER Adjust VR14
for control voltage zero.
48. JOYSTICK Adjust vertical for equal
excursions on meter.
49. JOYSTICK Adjust horizontal for equal
excursions on meter.