Video System Adjustment (Gx330) - Sony RDR-GX330 Service Manual

7-1. Video System Adjustment (GX330)

Preparing for Adjustment
1. Equipments
• Oscilloscope
• Reference Disk
HLX-505/514 (NTSC single layer disc) J-6090-089-A
HLX-504 (NTSC dual layer disc) J-6090-088-A
1. Video Output Level Check
<Purpose>
This check is made to satisfy the NTSC signal standard, If it is adjusted
incorrectly, brightness will be too bright or too dark.
Mode PLAY
Signal Color bars
Test point Output (VIDEO) connector
(terminated in 75Ω)
Instrument Oscilloscope
Specification 1.0 V± 0.07 p-p
Check method:
1) Insert the NTSC reference disc and play back the 100% color bars.
2) Confirm that the video level is 1.0 V±0.07 Vp-p.
Fig. 7-1.
SECTION 7
ADJUSTMENT
2. S-Video Output S-Y Check
<Purpose>
This check confirms that the S-video Y-signal output has the rated
amplitude. If it adjusted incorrectly, the playback video signal will not
be displayed corrected even when the S-video cable is connected.
Mode
Signal
Test point
Instrument
Specification
Check method:
1) Insert the NTSC reference disc and play back the 100% color bars.
2) Confirm that the video level is 1.0 V±0.07 Vp-p.
1.0 ±0.07 Vp-p
7-1
RDR-GX220/GX330
PLAY
Color bars
S-VIDEO OUTPUT (S-Y) connector
(terminated in 75Ω)
Oscilloscope
1.0 V±0.07 p-p
1.0 ± 0.07Vp-p
Fig. 7-2.