Adjustment; Video System Adjustment; S-Video Output S-Y Check - Sony RDR-HX715 Service Manual

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7-1.

Video System Adjustment

Preparing for Adjustment
1. Equipments
• Oscilloscope
• Reference Disk
HLX-505 (NTSC single layer disk) J-6090-089-A
HLX-504 (NTSC dual layer disk) J-6090-088-A
NTSC : E,Taiwan
PAL : Russian, Australian, Singapore
1. Video Level Adjustment (MI-054 Board)
<Purpose>
This adjustment is made to satisfy the PAL standard, If it is adjusted
incorrectly, brightness will be too bright or too dark.
Mode
Signal
Test point
Instrument
Adjusting element
Specification
Adjusting method:
1) Insert the reference disk and play back the 100% color bars.
2) Adjust RV301 (Composite) or RV302 (Component) for 1.0 Vp-
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Video level adjustment in test mode
Color bars
LINE OUT (VIDEO) connector
(terminated in 75 Ω)
Oscilloscope
RV301 (Composite),
RV302 (Component)
+0.04
1.0 Vp-p
-0.02
+ 0.04
1.0
– 0.02
Fig. 7-1.
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SECTION 7
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ADJUSTMENT

7-2. S-Video Output S-Y Check

<Purpose>
This check confirms that the S-video output. If it adjusted incorrectly,
color will be to dark or too thin.
Mode
Signal
Test point
Instrument
Specification
Adjusting method:
1) Insert the reference disk and play back the 100% color bars.
Confirm that the S-Y level is 1.0 ± 0.05Vp-p.
2)
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Vp-p
co
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7-1
RDR-HX715
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Video level adjustment in test mode
Color bars
S VIDEO OUT (S-Y) connector
(terminated in 75 Ω)
Oscilloscope
1.0 ± 0.05Vp-p
1.0 ± 0.05Vp-p
Fig. 7-2.
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