Roland SH-2000 - Tuning Adjustments

ADJUSTMENT AND CHECKING
NOV 10 1977 SH-2000
1. TUNING
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~CONTROL-----===
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VR503 VR504
VR502 VR501
VR101
VR103 VA102
l TUN HTUN
VCO TUN OFFSET WIDTH
OP-12
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VC0-2
Setting: Tablet ...... Hold - on
Popcorn - on
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Panel ...... Pitch - center
Random
Note - off
Transpose - M
VR207 VR203 VR205
VCF BALANCE VCF WIDTH DC BALANCE
~~~~J Re~J:ce VR202 VR206
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VCF-2A
1) With F2 key held down, adjust VR101 (VCO TUN) on VC0-2 board so that
the Lissajous' figure is static.
2)With F1 key held down, adjust VR502 (L TUN) on OP-12 control board
so that the Lissajous' ·figure is static.
3) Repeat adjustment
of steps 1 and 2, until both Lissajous' figures are static.
Then
with F4 key held down, adjust VR501 (H TUN) on OP-12 control.board
so that the Lissajous· figure is static.
4) Repeat adjustment
of steps 1, 2 and 3 until the Lissajous' figures of F 1, F2 and F4 are static. Then
check
to see that F3 Lissajous' figure is static, too.
The above figures show the waveforms when 174.61 Hz triangular wave is applied
to HOR IN of the oscilloscope.
*The adjustment can also be completed by beat note method. In this case connect SH-2000 to an
amplifier and adjust VR's of each step so that zero-beat (in place of static Lissajous' figure) results
between the SH-2000 note and the note as the criteria.
!@Roland