Adjustment; Videl Levl Adjustment (Rd-046 Board); S-Video Output S-Y Check - Sony RDR-GX300 Service Manual

7-1. Video System Adjustment
Preparing for Adjustment
1. Equipments
• Oscilloscope
• Reference Disk
HLX-505 (NTSC single layer disk) J-6090-077-A
HLX-504 (NTSC dual layer disk) J-6090-078-A
1. Videl Levl Adjustment (RD-50 Board)
<Purpose>
This adjustment is made to satisfy the NTSC standard, If it is adjusted
incorrectly, brightness will be too bright or too dark.
Mode Video level adjustment in test mode
Signal Color bars
Test point LINE OUT (VIDEO) connector
(terminated in 75 Ω)
Instrument Oscilloscope
Adjusting element RV001
Specification 1.0 Vp-p
Adjusting method:
1) Insert the reference disk and play back the 100% color bars.
2) Adjust RV001 for 1.0 Vp-p.
Fig. 7-1.
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SECTION 7

ADJUSTMENT

+ 0.04
1.0 Vp-p
– 0.02
7-1

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 Video level adjustment in test mode
Signal Color bars
Test point S VIDEO OUT (S-Y) connector
(terminated in 75 Ω)
Instrument Oscilloscope
1.0 ± 0.06Vp-p
Specification
Adjusting method:
1) Insert the reference disk and play back the 100% color bars.
Confirm that the S-Y level is 1.0 ± 0.06 Vp-p.
2)
Fig. 7-2.
RDR-GX300
1.0 ± 0.06Vp-p