Sony DVP-LS500 Service Manual ▷ View online
7-2
3. Checking S Video Output S-C
<Purpose>
This checks whether the S video output S-C satisfies the NTSC/
PAL Standard. If it is not correct, the colors will be too dark or
light.
This checks whether the S video output S-C satisfies the NTSC/
PAL 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
S VIDEO OUT (S-C) connector
(75
(75
Ω terminated)
Instrument
Oscilloscope
Specification
A = 286
± 30 mVp-p (NTSC)
A = 300
± 100 mVp-p (PAL)
Checking method:
1) In the test mode initial menu “6” Video Level Adjustment, set
1) In the test mode initial menu “6” Video Level Adjustment, set
so that color bars are generated.
2) Confirm that the S-C burst is “A”.
Figure 7-3
4. Checking Component Video Output Y
<Purpose>
This checks component video output Y. If it is incorrect, correct
brightness will not be attained when connected to, for instance,
projector.
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
connector (75
Ω terminated)
Instrument
Oscilloscope
Specification
1.00
± 0.05 Vp-p
Checking method:
1) In the test mode initial menu “6” Video Level Adjustment, set
1) In the test mode initial menu “6” Video Level Adjustment, set
so that color bars are generated.
2) Confirm that the Y level is 1.00
± 0.05 Vp-p.
Figure 7-4
7-2. ADJUSTMENT OF VIDEO SYSTEM
1. Video Level Adjustment (MB-108 BOARD)
<Purpose>
This adjustment is made to satisfy the NTSC/PAL standard, and if
not adjusted correctly, the brightness will be too large or small.
This adjustment is made to satisfy the NTSC/PAL standard, and if
not adjusted correctly, the brightness will be too large or small.
Mode
Video level adjustment in test mode
Signal
Color bars
Test point
LINE OUT (VIDEO) connector
(75
(75
Ω terminated)
Instrument
Oscilloscope
Adjusting element
RV401
Specification
1.00 Vp-p
Adjusting method:
1) In the test mode initial menu “6” Video Level Adjustment, set
1) In the test mode initial menu “6” Video Level Adjustment, set
so that color bars are generated.
2) Adjust the RV401 to attain 1.00 Vp-p.
Figure 7-1
2. 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.
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
Video level adjustment in test mode
Signal
Color bars
Test point
S VIDEO OUT (S-Y) connector
(75
(75
Ω terminated)
Instrument
Oscilloscope
Specification
1.00
± 0.05 Vp-p
Checking method:
1) In the test mode initial menu “6” Video Level Adjustment, set
1) In the test mode initial menu “6” Video Level Adjustment, set
so that color bars are generated.
2) Confirm that the S-Y level is 1.00
± 0.05 Vp-p.
Figure 7-2
+0.04
–0.02
–0.02
A
+ 0.04
– 0.02
– 0.02
1.00 Vp-p
+0.04
–0.02
–0.02
1.00
±
0.05 Vp-p
1.00
±
0.05 Vp-p
7-3
5. Checking Component Video Output B-Y
<Purpose>
This checks component video output B-Y. If it is incorrect, cor-
rect colors will not be displayed when connected to, for instance,
component input projector.
This checks component video output B-Y. If it is incorrect, cor-
rect colors will not be displayed when connected to, for instance,
component input projector.
Mode
Video level adjustment in test mode
Signal
Color bars
Test point
COMPONENT VIDEO OUT (C
B
)
connector (75
Ω terminated)
Instrument
Oscilloscope
Specification
700
± 50 mVp-p
Checking method:
1) In the test mode initial menu “6” Video Level Adjustment, set
1) In the test mode initial menu “6” Video Level Adjustment, set
so that color bars are generated.
2) Confirm that the B-Y level is 700
± 50 mVp-p.
Figure 7-5
6. Checking Component Video Output R-Y
<Purpose>
This checks component video output R-Y. If it is incorrect, cor-
rect colors will not be displayed when connected to, for instance,
component input projector.
This checks component video output R-Y. If it is incorrect, cor-
rect colors will not be displayed when connected to, for instance,
component input projector.
Mode
Video level adjustment in test mode
Signal
Color bars
Test point
COMPONENT VIDEO OUT (C
R
)
connector (75
Ω terminated)
Instrument
Oscilloscope
Specification
700
± 50 mVp-p
Checking method:
1) In the test mode initial menu “6” Video Level Adjustment, set
1) In the test mode initial menu “6” Video Level Adjustment, set
so that color bars are generated.
2) Confirm that the R-Y level is 700
± 50 mVp-p.
Figure 7-6
7. Checking RGB Output R
<Purpose>
This checks RGB output R. If it is incorrect, pictures will not be
displayed correctly in spite of connection to the TV with an EURO
AV connecting cord.
This checks RGB output R. If it is incorrect, pictures will not be
displayed correctly in spite of connection to the TV with an EURO
AV connecting cord.
Mode
Play
Signal
Check the Color-bar (100%) signal
on DVD reference disc
on DVD reference disc
Test point
LINE (RGB)-TV connector
pin qg (75
pin qg (75
Ω terminated)
Instrument
Oscilloscope
Specification
700
± 100 mVp-p
Checking method:
1) Confirm that the R level is 700
1) Confirm that the R level is 700
± 100 mVp-p.
Figure 7-7
8. Checking RGB Output G
<Purpose>
This checks RGB output G. If it is incorrect, pictures will not be
displayed correctly in spite of connection to the TV with an EURO
AV connecting cord.
This checks RGB output G. If it is incorrect, pictures will not be
displayed correctly in spite of connection to the TV with an EURO
AV connecting cord.
Mode
Play
Signal
Check the Color-bar (100%) signal
on DVD reference disc
on DVD reference disc
Test point
LINE (RGB)-TV connector
pin qa (75
pin qa (75
Ω terminated)
Instrument
Oscilloscope
Specification
700
± 100 mVp-p
Checking method:
1) Confirm that the G level is 700
1) Confirm that the G level is 700
± 100 mVp-p.
Figure 7-8
700
±
50 mVp-p
700
±
50 mVp-p
700
±
100 mVp-p
700
±
100 mVp-p
7-4
9. Checking RGB Output B
<Purpose>
This checks RGB output B. If it is incorrect, pictures will not be
displayed correctly in spite of connection to the TV with an EURO
AV connecting cord.
This checks RGB output B. If it is incorrect, pictures will not be
displayed correctly in spite of connection to the TV with an EURO
AV connecting cord.
Mode
Play
Signal
Check the Color-bar (100%) signal
on DVD reference disc
on DVD reference disc
Test point
LINE (RGB)-TV connector
pin 7 (75
pin 7 (75
Ω terminated)
Instrument
Oscilloscope
Specification
700
± 100 mVp-p
Checking method:
1) Confirm that the B level is 700
1) Confirm that the B level is 700
± 100 mVp-p.
Figure 7-9
700
±
100 mVp-p
7-6 E
7-3. ADJUSTMENT RELATED PARTS ARRANGEMENT
MB-108 BOARD (SIDE A)
ETXNY410E0F BOARD (SIDE A)
VIDEO LEVEL ADJ
RV401
IC403
+
CN201
13
1
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