Sony RDR-HXD790 Service Manual page 94

7. Scart Video Output Level Check
<Purpose>
This check is made to satisfy the P A L 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 75Ω)
Instrument Oscilloscope
Specification 1.0 V± 0.07 Vp-p
Check method:
Note: SCART OUT should be set to "Video".
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.
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 75Ω)
Instrument Oscilloscope
Specification 1.0 V±0.07 Vp-p
Check method:
Note: SCART OUT should be set to "S-Video".
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.
1.0 ± 0.07 Vp-p
Fig. 7-7
1.0 ± 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 P A L
standard. If it adjusted incorrectly , the playback color will not be
too dark or too thin.
Mode
Signal
Test point
Instrument
Specification
Check method:
Note: SCART OUT should be set to "S-Video".
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.
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
Signal
Test point
Instrument
Specification
Check method:
Note 1: RGB OUT should be set to ON.
Note 2: Do not connect the HDMI OUT.
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.
7-3
PLAY
100% Color bars
Scart Video output connector pin-qg
(terminated in 75Ω)
Oscilloscope
300 mV±30 mVp-p
300 ± 30 mVp-p
Fig. 7-9
PLAY
100% Color bars
Scart Video output R connector pin-qg
(terminated in 75Ω)
Oscilloscope
700 mV±50 mVp-p
700 ± 50 mVp-p
Fig. 7-10