Sony DVP-S500D, Service Manual, Page: 50 / 80

7-3
4. Checking Component Video Output R-Y
(MB-78 board)
<Purpose>
This checks component video output R-Y. If it is incorrect, cor-
rect colors will not be displayed when connected to, for instance,
projector.
Mode CXD1914 (ENC) check in test mode
menu “0” Syscon Diagnosis
Signal Color bars
Test point CN251
8
pin (terminating 75
Ω
)
Instrument Oscilloscope
Specification 700 ± 30 mVp-p
Checking method:
1) Confirm that the R-Y level is 700 ± 30 mVp-p.
Figure 7-5
5. Checking Component Video Output Y
(MB-78 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
CXD1914 (ENC) check in test mode
menu “0” Syscon Diagnosis
Signal Color bars
Test point CN251
6
pin (terminating 75
Ω
)
Instrument Oscilloscope
Specification 1 ± 0.05 Vp-p
Checking method:
1) Confirm that the Y level is 1 ± 0.05 Vp-p.
Figure 7-6
+0
–1.5
+0
–1.5
286 ± 20 mVp-p
11
12
100
µ
F
75
Ω
±
1%
100k
±
1%
CN252
+
Digital voltmeter
11
12
100
µ
F
75
Ω
±
1%
100k
±
1%
CN252
+
Oscilloscope
700 ± 30 mVp-p
(NTSC)
(PAL)
(PAL)
1 ± 0.05 Vp-p
(NTSC)