Q Q - Sony RDR-HX680 Service Manual

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3. S-Video Output S-C Check
<Purpose>
This check confirms that the S-video 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 S-VIDEO OUTPUT (S-C) connector
(terminated in 75Ω)
Instrument Oscilloscope
Specification PAL: 300 mV±30 mVp-p
NTSC: 286mV±30 mVp-p
Check method:
1) Insert the PAL/NTSC reference disc and play back the 100%
color bars.
2) Confirm that the burst signal level is 300 mV±30 mVp-p.
Fig. 7-3
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
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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 PLAY
Signal 100% Color bars
Test point COMPONENT VIDEO OUT (Y)
connector (terminated in 75Ω)
Instrument Oscilloscope
Specification 1.0 V±0.07Vp-p
Check method:
Note 1: Do not set RGB OUT to ON.
Note 2: Do not connect the HDMI OUT.
1) Insert the PAL/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.
Fig. 7-4
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PAL: 300 mV ± 30 mVp-p
NTSC: 286mV ± 30 mVp-p
1.0 ± 0.07Vp-p
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5. Component Video Output B-Y (Pb) Check
<Purpose>
This check confirms that the B-Y signal of the component video
conforms to the PAL/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
Check method:
Note 1: Do not set RGB OUT to ON.
Note 2: Do not connect the HDMI OUT.
1) Insert the PAL/NTSC reference disc and play back the 100%
color bars.
2) Confirm that the burst signal level is 700 mV±50 mVp-p.

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6. Component Video Output R-Y (Pr) Check
<Purpose>
This check confirms that the R-Y signal of the component video
conforms to the PAL/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
Check method:
Note 1: Do not set RGB OUT to ON.
Note 2: Do not connect the HDMI OUT.
1) Insert the PAL/NTSC reference disc and play back the 100%
color bars.
2) Confirm that the burst signal level is 700 mV±50 mVp-p.
co
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PLAY
100% Color bars
COMPONENT VIDEO OUT (Pb)
connector (terminated in 75Ω)
Oscilloscope
700 mV±50 mVp-p
700 ± 50 mVp-p
Fig. 7-5
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PLAY
100% Color bars
COMPONENT VIDEO OUT (Pr)
connector (terminated in 75Ω)
Oscilloscope
700 mV±50 mVp-p
700 ± 50 mVp-p
m
Fig. 7-6
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