Adjustment Of Video System - Sony DVP-NS30 Servise Manual

DVP-NS30/NS32/NS33/NS52P
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7-2. ADJUSTMENT OF VIDEO SYSTEM

1. Checking Video Level
<Purpose>
Checking Video Level the NTSC/PAL standard, and if not correct,
the brightness will be too large or small.
Mode HLX-504
Signal Color bars 100%
Test point LINE OUT (VIDEO) connector
(75 Ω terminated)
Instrument Oscilloscope
Specification 1.0 ± 0.08 Vp-p
Adjusting method:
1) In the Video Signal menu "1" Color Bar 100% play back.
2) Confirm that the Video Level is 1.0 ± 0.08 Vp-p.
2. Checking Progressive Video Output Level
<Purpose>
Check progressive video output level. If it is incorrect, correct
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brightness will not be attained when connected to, for instance,
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projector.
Mode HLX-504
Signal Color bars 100%
Test point COMPONENT VIDEO OUT (Y)
connector (75 Ω terminated)
Instrument Oscilloscope
Specification 1.0 ± 0.08 Vp-p
Adjusting method:
1) In the Video Signal menu "1" Color Bar 100% play back.
2) Confirm that the Y level is 1.0 ± 0.08 Vp-p.
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1.0 ± 0.08 Vp-p
Fig. 7-1.
1.0 ± 0.08 Vp-p
Fig. 7-2.
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3. Checking S Video Output S-Y
<Purpose>
Check S-terminal video output. If it is incorrect, pictures will not be
displayed correctly in spite of connection to the TV with a S-terminal
cable.
Mode
Signal
Test point
Instrument
Specification
Checking method:
1) In the Video Signal menu "1" Color Bar 100% play back.
2) Confirm that the S-Y level is 1.0 ± 0.08 Vp-p.
4. Checking S Video Output S-C
<Purpose>
This checks whether the S-C satisfies the NTSC/PAL standard. If it
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is not correct, the colors will be too dark or light.
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Mode
Signal
Test point
Instrument
Specification
Checking method:
1) In the Video Signal menu "1" Color Bar 100% play back.
2) Confirm that the S-C burst is "A".
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HLX-504
Color bars 100%
S VIDEO OUT (S-Y) connector
(75 Ω terminated)
Oscilloscope
1.0 ± 0.08 Vp-p
1.0 ±0.08 Vp-p
Fig. 7-3.
1 5 0 5 8 2 9 9 4
HLX-504
Color bars 100%
S VIDEO OUT (S-C) connector
(75 Ω terminated)
Oscilloscope
A = 286 ± 30 mVp-p (NTSC)
A = 300 ± 100 mVp-p (PAL)
A
Fig. 7-4.
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