DVP-NS72HP, DVP-NS77H, DVP-NS77HP, DVP-NS78H, DVP-NS78HP - Sony DVD Service Manual (repair manual). Page 71

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7-2
DVP-NS72HP/NS77H/NS77HP/NS78H/NS78HP
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 play back
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.
Fig. 7-1.
2.
Checking Scart Video Output Level (Video Mode)
(
AEP,UK,RUS)
<Purpose>
Check scart video output level. If it is incorrect, correct brightness
will be too large or small.
Mode
HLX-504 play back
Signal
Color bars 100%
Test point
VIDEO OUT (19p)
connector (75 W 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.
Fig. 7-2.
1.0 ± 0.08 Vp-p 
3.
Checking Scart S Video Output S-Y
(S-Video Mode) (
 AEP,UK,RUS)
Checking S Video Output S-Y
(
Except AEP,UK,RUS)
<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
HLX-504 play back
Signal Color bars 100%
Test point
S VIDEO OUT (S-Y) (19p)
(75 
Ω terminated)
Instrument
Oscilloscope
Specification
1.0 ± 0.08 Vp-p
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.
Fig. 7-3.
4.
Checking Scart S Video Output S-C
(S-Video Mode) (
AEP,UK,RUS)
Checking S Video Output S-C
(
Except AEP,UK,RUS)
<Purpose>
This checks whether the S-C satisfies the NTSC/PAL standard. If it
is not correct, the colors will be too dark or light.
Mode
HLX-504 play back
Signal
Color bars 100%
Test point
S VIDEO OUT (S-C)  (15p)
(75 
Ω terminated)
Instrument
Oscilloscope
Specification
A = 286 ± 50 mVp-p (NTSC)
A = 300 ± 50 mVp-p (PAL)
Checking method:
(1) In the Video Signal menu “1” Color Bar 100% play back.
(2) Confirm that the S-C burst is “A”.
Fig. 7-4.
A
1.0 ± 0.08 Vp-p 
1.0 ±0.08 Vp-p 
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