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Sharp DV-1600 Series - Page 7

Sharp DV-1600 Series
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Step
Adjust point
Connection
Procedure
(4)
Connect
oscilloscope
to
pin
@J
of
IC201.
Oscilloscope
range:
50
mV/div.
8.
Sub-sound
adjust:
(1)
Receive
PAL colour bar
signal
(1)
Adjust
R302
to
have
1.0
Vp-p
of
waveform
R1022
(sound modulation 400
Hz,
100%).
on
oscilloscope
as
shown
in
Fig.
15.
(2) Connect
oscilloscope
to
connec-
tor
Y3
of
sub-sound control
(R302).
(3) Adjust
R302
to
have
1.0
Vp-p
of
waveform (400
Hz)
on
oscilloscope.
(4)
Obtain
a
normal sound
in
the
l.o{’
following
way
:
Figure 15.
Turn
off
the power switch first
and then turn
it
on
again,
and
(2)
Adjust R1022
so
that
output
voltage
of
turn
on
the remote control
speaker
is
1
.O
Vp-p.
transmitter;
then
a
normal
sound
is
obtained.
(5)
Connect
oscilloscope
to
both
ends
of
speaker.
4
(6)
Adjust
R1022
(sub-sound
1
.ovp-p
control
in
sensor
PWB)
so
that
i
output
voltage
of
speaker
is
1.0
vp-p.
Figure 16.

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