Adjustments; Video System Adjustment - Sony RDR-HXD790 Service Manual

RDR-HXD790/HXD795/HXD890/HXD895/HXD990/HXD995/HXD1090/HXD1095
7-1.

Video System Adjustment

Preparing for Adjustment
1. Equipments
• Oscilloscope
• Reference Disk
HLX-507 (PAL single layer disc) J-6090-077-A
HLX-506 (PAL dual layer disc) J-6090-078-A
1. Video Output Level Check
<Purpose>
This check is made to satisfy the P A L signal standard, If it is adjusted
incorrectly, brightness will be too bright or too dark.
Mode PLAY
Signal 100% Color bars
Test point Output (VIDEO) connector
(terminated in 75Ω)
Instrument Oscilloscope
Specification 1.0 V± 0.07 Vp-p
Check method:
1) Insert the PAL 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

ADJUSTMENTS

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 PAL 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
PLAY
100% Color bars
S-VIDEO OUTPUT (S-Y) connector
(terminated in 75Ω)
Oscilloscope
1.0 V±0.07 Vp-p
1.0 ± 0.07Vp-p
Fig. 7-2