Sony DVP-C653D, Service Manual, Page: 84 / 103

7-3 7-4 E
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
Test point
COMPONENT VIDEO OUT (Y)
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.
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.
Mode Video level adjustment in test mode
Signal Color bars
Test point CN005 pin
5
Instrument Oscilloscope
Specification 286 ± 50 mVp-p
Connection:
Checking method:
1) Confirm that the S-C burst is 286 ± 50 mVp-p.
Figure 7-6
7-3. ADJUSTMENT RELATED PARTS ARRANGEMENT
MB-85 BOARD (SIDE A)
HS-034SF/034SU BOARD (SIDE A)
1.0 ± 0.1 Vp-p
286 ± 50 mVp-p
4
5
100
µ
F
75
Ω
±
1%
100k
±
1%
CN005
+
Oscilloscope
1 2
27 28
CN005
RV401
VIDEO LEVEL ADJ
7 1 1 6
CN203 CN202