Checking Component Video Output Y (Mb-85 Board); Checking S Video Output S-C (Mb-85 Board); Adjustment Related Parts Arrangement - Sony dvp-c650d Service Manual

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5. Checking Component Video Output Y
(MB-85 BOARD)
<Purpose>
This checks component video output Y. If it is incorrect, correct
brightness will not be attained when connected to, for instance,
projector.
Mode Video level adjustment in test mode
Signal Color bars
COMPONENT VIDEO OUT (Y)
Test point
connector (75 Ω terminated)
Instrument Oscilloscope
Specification 1.0 ± 0.1 Vp-p
Checking method:
1) Confirm that the Y level is 1.0 ± 0.1 Vp-p.
1.0 ± 0.1 Vp-p
Figure 7-5

6. Checking S Video Output S-C (MB-85 BOARD)

<Purpose>
This checks whether the S-C satisfies the NTSC Standard. If it is
not correct, the colors will be too dark or light. T E
L 1 3 9 4 2 2 9 6 5 1 3
Mode Video level adjustment in test mode
Signal Color bars
CN005 pin 5
Test point
Instrument Oscilloscope
Specification 286 ± 50 mVp-p
Connection:
CN005
100µF
+
5 Oscilloscope
75Ω
100k
±1% ±1%
4
Checking method:
1) Confirm that the S-C burst is 286 ± 50 mVp-p.
286 ± 50 mVp-p
w w w
Figure 7-6
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7-3. ADJUSTMENT RELATED PARTS ARRANGEMENT

MB-85 BOARD (SIDE A)
CN005
28 27
2 1
RV401
VIDEO LEVEL ADJ
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HS-034SF/034SU BOARD (SIDE A)
7
CN202
c o
.
2 4 2
9 8
5 0 8 9 2 4 9 8 2
1 1 6
CN203
m
7-4 E
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