Roland SH-1 Service Notes page 16

ADJUSTMENT
JUL
20 1978 SH-1
5. a.
50fo
Set controls on the control panel and connect an oscilloscope.
Depress
a
key around
the middle of keyboard and adjust VR306
to
obtain 50^ duty
square
-wave.
5. b.
Set PULSE
WIDTH
control at
10
Depress
a
key
around the middle
of
keyboard and adjust VR304
to
obtain 5^ duty
square vave.
Adjust VR601
so
that VCF
is at the onset of
oscillating with RESONANCE control
at 8 as shown
at right.
6. b.
Width
Set
ICYBD
and RESONANCE controls at
JiAX.
Depress A2 and adjust FREQ control
so
that VCF oscillates
at about IKHz.
While depressing
Cl
and C2 alternately, adjust
Vli604 to
obtain octave relations.
15
Roland