Sony RDR-HX820, Service Manual

Page: 98 / 120

7-3
7. Scart Video Output Level Check
<Purpose>
This check is made to satisfy the PAL signal standard, If it is adjusted
incorrectly, brightness will be too bright or too dark.
Mode PLAY
Signal 100% Color bars
Test point Scart Video output connector pin-
ql
(terminated in 75
Ω
)
Instrument Oscilloscope
Specification 1.0 V
±
0.07 Vp-p
Check method:
Note: COMPONENT OUT should be set to OFF.
1) Insert the PAL reference disc and play back the 100% color
bars.
2) Confirm that the video level is 1.0 V
±
0.07 Vp-p.
Fig. 7-7
8. Scart Video Output S-Y Check
<Purpose>
This check confirms that the Scart Y-signal output has the rated
amplitude. If it adjusted incorrectly, the playback video signal will
not be displayed corrected even when the Scart cable is connected.
Mode PLAY
Signal 100% Color bars
Test point Scart Video output connector pin-
ql
(terminated in 75
Ω
)
Instrument Oscilloscope
Specification 1.0 V
±
0.07 Vp-p
Check method:
Note: COMPONENT OUT should be set to OFF.
1) Insert the PAL reference disc and play back the 100% color
bars.
2) Confirm that the video level is 1.0 V
±
0.07 Vp-p.
Fig. 7-8
9. Scart Video Output S-C Check
<Purpose>
This check confirms that the Scart output S-C conforms to the PAL
standard. If it adjusted incorrectly, the playback color will not be
too dark or too thin.
Mode PLAY
Signal 100% Color bars
Test point Scart Video output connector pin- qg
(terminated in 75
Ω
)
Instrument Oscilloscope
Specification 300 mV
±
30 mVp-p
Check method:
Note: COMPONENT OUT should be set to OFF.
1) Insert the PAL reference disc and play back the 100% color
bars.
2) Confirm that the burst signal level is 300 mV
±
30 mVp-p.
Fig. 7-9
10. Scart Video RGB Output R Check
<Purpose>
This check confirms that the RGB R signal output has the rated
amplitude. If this signal level is not correct, brightness of the video
signal will not be too dark or too thin when the Scart connector
output signal is connected to a projector having Scart input.
Mode PLAY
Signal 100% Color bars
Test point Scart Video output R connector pin-
qg
(terminated in 75
Ω
)
Instrument Oscilloscope
Specification 700 mV
±
50 mVp-p
Check method:
Note: COMPONENT OUT should be set to OFF.
RGB OUT should be set to ON.
1) Insert the PAL reference disc and play back the 100% color
bars.
2) Confirm that the R signal level is 700 mV
±
50 mVp-p.
Fig. 7-10
1.0
±
0.07 Vp-p
1.0
±
0.07 Vp-p
300
±
30 mVp-p
700
±
50 mVp-p