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PVM-8041Q/8044Q
2.
4.43MHz
VXO
adjustment
(CV
102)
(
1
)
Receive
PAL
colour bar
signal.
(2)
Connect
+12V
power
line to
IC109 pin-®.
(3)
Connect
frequency counter
to
1C113 pin-®.
Adjust
CV102
(443FO)
for
44336 19±20Hz.
(This
adjustment can be
alternatively
done by
observing screen
as
below.)
Adjust colour synchronization
by
CV1
02(443FO).
Adjust
so
that
colour
stripes
disappear
and
the
hue
change
is
stabilized
extremely.
NTSC
COMB
FILTER
ADJUSTMENT
(RV1,T1/CFM101
BOARD)
1
.
Receive
NTSC
3.58 color bar
signal.
2.
Connect
an
oscilloscope
to
C202 -
negative
side.
3.
Confirm
the
Y OUT
is
0.78+0.5
Vpp.
4.
Confirm
the residual
chroma
is
32
mVp-p
below.
If
it
is
above 35
mVpp,
adjust
withRVl andTl
onCFM201
board while
tracking.
2.
NTSC
3.58MHz
-
COLOR
adjustment
(RVl
1
1)
(1)
Receive
NTSC
3.58 color bar
signal.
(2)
Connect
an
oscilloscope
to
IC124
pin-(§)
(B-OUT).
(3)
Adjust
RV
1
1
1
(358NT -COL)
so
that
waveform
peaks should have
the
same
level
(most
flat).
(B-OUT)
(Adjust
so
that
the
first
and
the
4th
peaks
should
have
the
same
level.)
less
than
20mV
p-p
3.
NTSC
3.58MHz
-
COLOR
(R-Y)
adjustment
(RV104,
RV107)
(1
)
Receive
the
color bar
signal.
(2)
Connect
an
oscilloscope
to the
Q127
emitter
(R-Y
OUT),
and
adjust
RV104
(358NT-SHIFT)
so
that the
output of
the burst
section
(B-Y
axis signal
output)
becomes
0.
(3)
Connect
an oscilloscope
to
IC
1
24
pin-®
(R-OUT).
Adjust
RVl
07
(358NT-COL
(R-Y)) so
that
the level difference
should be
minimum.
(R-OUT)
(Adjust
for
B=D.
[less
than
20m
V]
Also
level
difference
between
B
and
C
should
be
less
than
60mV.)
NTSC
COLOR
DEMODULATION ADJUSTMENT
(RVl
14,
RVl
1
1
,RV1
04,
RVl
07)
1
.
NTSC
3.58MHz
-
HUE
adjustment
(RV
1 1
4)
(1)
SupplyNTSCcolorbarsignalincludingburstandR-Y component.
(For
example, Tektronix
1410SG
output color bar
signal
with
B-
Y
component
removed.)
(2)
Connect
an oscilloscope
to
Q1
28
emitter
(B-Y
OUT).
(3)
Adjust
RVl
14
(358NT
-
HUE)
so
that
all
the
wavefomi
peaks
should
have
equal amplitude (look
flat)
except
burst.
(Level
difference
should be
less
than
lOmV
p-p.)
—
27
—
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