Advertisement
PVM-8041Q/8044Q
PRIMARY
COLOR
MATRIX
ADJUSTMENT
(RV115,
RV116,RV123)
1
.
Supply
component
color
bar
signal(75% diroma
color
bar)
to
the
equipment
so
that
Y
signal
is
supplied
to
EXT SYNC
and R-
Y
signal
to
R-
Y
connectors Operate
the
equipment
in
external
sync
mode.
2.
Connect
oscilloscope
to
1C
1
24
pin-®
(B-OUT).
3.
Adjust
RVl
1
5
(SUB
HUE)
to
obtain the
Blue
output as
shown
in
figure.
(B-OUT)
less
than
40mV
p-p
T
Adjust
so
that
this
portion
should
have
minimum
amplitude.
4.
Supply
component
color bar
signal
(75%
color
bar)
to
the
component
input
connector
to
feed
R-Y
and B-
Y
signals.
Operate
the
equipment
in
internal
SYNC
mode.
5.
ConnectoscilloscopetolC124pin-®
0UB-COL).
Adjust
RVl
16
(SUB-COL)
so
that
waveform
peaks should have
the
same
level.
(Adjust
so
that
the
first
and
the 4th
peaks
should
have
the
same
level.)
6.
Connect
oscilloscope
to
IC
1
24
pin-®
(R-OUT).
7.
Adjust
R V
1
23
((R- Y)-l
N)
so
that
waveform
peaks should
have
the
same
level.
have
minimum
amplitude.
BURST GATE PULSE
WIDTH
ADJUSTMENT
(RV109)
1
.
Receive
color bar
signal.
2.
Connect
dual
trace
oscilloscope
to
CN104
connector
pin-®
(COMP-SYNC)
and IC113 (M51279)
pin-® (BGP-WIDTH).
Adjust
RV
1
09
(BGP-WIDTH)
to
obtain the relationship as
shown
in
the
figure.
VXO ADJUSTMENT
(CV1
01
,CV1
02)
1.
3.58MHz
VXO
adjustment
(CVlOl)
(1)
Receive
NTSC
color bar
signal.
(2)
Connect
+5V
power
line to
ICl
13
pin-®
(ID-FILT-REF)
via
a
4700Q
resistor.
(3)
Ground 1C109 pin-®
by
connecting
it
to
ground.
(4)
Ground
C
1
62
-
negative
side
by
connecting
it
to
ground.
(5)
Connect
frequency counter
to
ICl
13
pin-®.
Adjust
CVl
01
(358FO)
for
3579545±20Hz.
(This
adj
ustment can be
alternatively
done by
observing
screen as
below.)
Adjust
color
synchronization
by
CVl
01
(358FO).
Adjust
so
that color stripes
disappear
and
the
hue
change
is
stabilized
extremeiy.
Advertisement
