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8_.-11
.
Y FM Deviation Adjustment (SV-35 Board)
Mode
Recording and playback
Signal
Color
bar
Measurement Point
Pin© of W013(VIDEO OUT)
Measuring Instrument Oscilloscope
Adjusting Element
RV604
Specified Value
Playback level 1.00±0.05 Vp-p
Notes :
1)
Perform
•PB
Y
level
1
adjustment
(8 -4-8) •,
·pa
Y
level
2
adjustment
(8-4-9r and
•y
FM Carrier Frequency
Adjustment (8-4-IOr
first.
2)
The VIDEO OUT terminal (J702 on the
JK-34
board) must
be
terminated in 75Q.
Adjusting method :
1)
Record the color bar signal.
2)
Play back the recorded signal.
3)
Confirm the playback output level.
Specification :
1.00
± 0.05 Vp-p
4)
If the specification is not satisfied, rotate RV604
as
follows,
then repeat steps
1)
to
3).
RV604
rotating
direction
When larger than the
Clockwise
(0)
specified value
When smaller
than
the
Counterclockwise
(0)
specified value
Table 8-1.
White (100
%
)
I
White level center
I
t
1.00
±
0.05 Vp-p
_l
\
SYNC level center
Fig. 8-18. Y FM deviation adjustment
8_.·12. AC Clip Check (SV-35
Board)
Mode
Recording
Signal
Color bar
Measurement Point
Pin
®
of IC600
Measuring Element
Oscilloscope
Specified Value
240 ± 10%
Adjsuting method
:
1)
Confirm that the white (100 %
)
peak of the
waveform output from Pin
®
of IC600 is 240
±
10%.
White
(
100%)
I
Fig.8-19. AC clip
check.
-
159
-
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