Roland SH-3 Service Note page 17

to
get the oscillated frequency
may
come
to 358Hz,
depressing
the
highest
Key
C.
(6)
Set the
RESONANCE control
at
7
position on scale, and adjust VR259 so
as to get the
condition right before
the oscillation.
(7) Check the
operation of
the
VCP PEDAL control.
4
.
Adjustment of VGA
(1)
Return the
HOLD Control
to 0
position.
(2)
Raise both the VCO
8'
(or others feet) and
the
VCP CUTOFF
FREQ, control
to 10
on scale, and adjust VR2
61 so
that the sounds may
not be audible.
5
.
Adjustment of CHOROUS
(1)
Connect
the
synchroscope to the 64 th terminal.
(2)
Adjust VR252 so that the
wave-form shown on the figure may
be obtained,
depressing the lowest
Key
F.
(
3
)
Adjust VR264 so that the
wave-form
shown on the figure may be obtained,
depressing the
keys
step
by
step from
low
to high.
about
(
4
)
Adjust VR279 so that the
output from
the 66th terminal may be
modulated
as shown on the figure.
(
5
)
Check the
operation of 8' CHOROUS Control.
(6)
Check if the all keys* note will be modulat-
ed smoothly, changing
the
TRANSPOSE Changeover
20
%
40
%
40
%
Switch in three stages.
6.
Check
the
wave-form
on
Envelope Circuit
(l)
at 12nd terminal
+-
15V
-
15V
at 34th terminal
at 36th terminal
at 37th terminal
at 20th terminal
Key
ON OFF
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