Sony RDR-GX330 Service Manual page 80

RDR-GX220/GX330
3. S-Video Output S-C Check
<Purpose>
This check confirms that the S-video output S-C conforms to the
NTSC standard. If it adjusted incorrectly, the playback color will not
be too dark or too thin.
Mode
Signal
Test point
Instrument
Specification
Checking method:
1) IInsert the NTSC reference disc and play back the 100% color
bars.
2) Confirm that the burst signal level is 286 mV±30 mVp-p.
4. Component Video Output Y Check
<Purpose>
This check confirms that the component Y 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 COMPONENT
connector output signal is connected to a projector having
COMPONENT input.
Mode
Signal
Test point
Instrument
Specification
Checking method:
1) Insert the NTSC reference disc and play back the 100% color bars.
2) Confirm that the Y signal level is 1.0 V±0.07 Vp-p.
PLAY
Color bars
S-VIDEO OUTPUT (S-C) connector
(terminated in 75Ω)
Oscilloscope
286 mV±30 mVp-p
286 ± 30 mVp-p
Fig. 7-3.
PLAY
Color bars
COMPONENT VIDEO OUT connector
pin-1 (terminated in 75Ω)
Oscilloscope
1.0 V±0.07Vp-p
Fig. 7-4.
5. Component Video Output B-Y Check
<Purpose>
This check confirms that the B-Y signal of the component video
conforms to the NTSC standard. If this signal level is not correct,
color of the video signal will have different color when the
COMPONENT connector output signal is connected to a projector
having COMPONENT input.
Mode
Signal
Test point
Instrument
Specification
Checking method:
1) Insert the NTSC reference disc and play back the 100% color bars.
2) Confirm that the burst signal level is 700 mV±50 mVp-p.
6. Component Video Output R-Y Check
<Purpose>
This check confirms that the R-Y signal of the component video
conforms to the NTSC standard. If this signal level is not correct,
color of the video signal will have different color when the
COMPONENT connector output signal is connected to a projector
having COMPONENT input.
Mode
Signal
Test point
Instrument
Specification
Checking method:
1) Insert the NTSC reference disc and play back the 100% color bars.
2) Confirm that the burst signal level is 700 mV±50 mVp-p.
1.0 ± 0.07Vp-p
7-2
PLAY
Color bars
COMPONENT VIDEO OUT connector
pin-3 (terminated in 75Ω)
Oscilloscope
700 mV±50 mVp-p
700 ± 50 mVp-p
Fig. 7-5.
PLAY
Color bars
COMPONENT VIDEO OUT connector
pin-5 (terminated in 75Ω)
Oscilloscope
700 mV±50 mVp-p
700 ± 50 mVp-p
Fig. 7-6.