Epg S-Video Output S-C Level Check; Epg Component Video Output Y Check; Epg Component Video Output B-Y Chec; Epg Component Video Output R-Y Check - Sony RDR-HX900 Service Manual

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7-3. EPG S-Video Output S-C Level Check

<Purpose>
This check confirms that the S-video output S-C conforms to the
NTSC standard. If it is adjusted incorrectly, color will be too dark
or too thin.
Mode Video level adjustment in test mode.
Signal Color bars
Test point S VIDEO OUT (S-C) connector
(terminated in 75 Ω)
Instrument Oscilloscope
286 ± 30mVp-p
Specification
Adjustment method :
1) Into Factory Test Mode of Service Mode, the trigger of scope
is set to color bars.
2) Confirm that the burst signal level of S-C is 286 ± 30 mVp-p.
Fig. 7-3.

7-4. EPG Component Video Output Y Check

<Purpose>
This check confirms that the Y signal output is correct. If this signal
level is not correct, brightness of the video signal will be too bright
or too dark when the COMPONENT connector output signal is
connected to the projector having COMPONENT input.
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Mode Video level adjustment in test mode
Signal Color bars
Test point COMPONENT VIDEO OUT (Y)
connector (terminated in 75 Ω)
Instrument Oscilloscope
1.0 ± 0.06Vp-p
Specification
Adjustment method:
1) Into Factory Test Mode of Service Mode, the trigger of scope
is set to color bars.
2) Check that the Y level is 1.0 ± 0.06 Vp-p.
Fig. 7-4.
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7-5. EPG Component Video Output B-Y Chec

<Purpose>
This check confirms that the B-Y signal of the component video
output is correct. 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 the projector having COMPONENT
input.
Mode Video level adjustment in test mode
Signal Color bars
Test point COMPONENT VIDEO OUT (PB)
terminal (terminated in 75 Ω)
Instrument Oscilloscope
700 ± 50mVp-p
Specification
Adjustment method:
1) Into Factory Test Mode of Service Mode, the trigger of scope
is set to color bars.
2) Confirm that the B-Y level is 700 ± 50 mVp-p.
Fig. 7-5.

7-6. EPG Component Video Output R-Y Check

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<Purpose>
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This check confirms that the R-Y signal of the component video
output is correct. 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 the projector having COMPONENT
input.
Mode Video level adjustment in test mode
Signal Color bars
Test point COMPONENT VIDEO OUT (PR)
connector (terminated in 75 Ω)
Instrument Oscilloscope
700 ± 50mVp-p
Specification
Adjustment method:
1) Into Factory Test Mode of Service Mode, the trigger of scope
is set to color bars.
2) Confirm that the R-Y level is 700 ± 50 mVp-p.
Fig. 7-6.
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700 ± 50 mVp-p
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