Roland SH-3 Service Note page 16

6.
ALIGNMENT PROCEDURE
1.
Preparation
(
Check of Operation and Preadjustment)
(1)
Setting of Controllers
VCO
8'
10 on scale
VCF Cutoff Frequency
........ 10 on scale
VCA HOLD
10 on scale
TRANSPOSE ................... Position
M
* Other Controllers
0 on scale or
OFF
(2)
Adjusting Points
VCA
VR261
(
CUTOFF)
VCF
VR257 (FREQ.)
Adjust these semi-fixed resistors
so that the
sounds are audible,
using
a headphone or
an amplifier.
2.
Adjustment of VCO
(1)
Connect
the digital frequency counter
to the
71st terminal.
(2)
Check
the 0 position of PITCH on
the control panel,
and
the center
position of TUNING and WIDTH on
the rear panel.
(3)
Adjust VR102
so that the
frequency shown on
the digital counter may
come to 174Hz, depressing the lowest
Key
F.
(
4
)
Likewise, adjust VR101
so that the
frequency may
come
to 1760Hz,
depressing
the
highest Key
A.
(5)
Repeat abovementioned procedure
(3)
and
(
4
).
(
6
)
Check
the operations of following functions.
a.
PORTAMENTO
b.
PORTAMENTO OFF (Push Switch)
c.
GLIDE Button (Semitone)
d.
PITCH, TUNING and
WIDTH
e.
GLIDE PEDAL
(One note)
3.
Adjustment of VCF
Return
the
VCO
8
'
to 0 position, and raise the RESONANCE control
to 10
on scale so as
to get
the
oscillation.
(1)
Adjust
the CUTOFF
FREQ, control and VR 257 properly.
(2)
Adjust VR
256 to get Octave.
(3)
Adjust VR 258
to
get Octave independently of
the position of CUTOFF
FREQ, control.
(
4
)
Repeat abovementioned procedure
(l), (2) and
(3).
(5)
Set
the CUTOFF FREQ, control
at 0 position, and adjust VR 257
so as
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