Adjustment; Epg S-Video Output S-Y Check - Sony RDR-HX900 Service Manual

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7-1. EPG Video System Adjustment
Preparing for Adjustment
1. Equipments
• Oscilloscope
• Service Mode
8) TV GUIDE MODE
r
2) Factory Test Mode
1. Videl Levl Adjustment (EPG-001 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
Signal
Test point
Instrument
Adjusting element
Specification
Adjusting method:
1) Into Factory Test Mode of Service Mode, the trigger of scope
is set to color bars.
2) Adjust RV001 for 1.0 Vp-p.
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Video level adjustment in test mode
Color bars
LINE OUT (VIDEO) connector
(terminated in 75 Ω)
Oscilloscope
RV001
1.0 Vp-p
+ 0.04
1.0
– 0.02
Fig. 7-1.
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SECTION 7
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8

ADJUSTMENT

7-2. EPG 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) Into Factory Test Mode of Service Mode, the trigger of scope
is set to color bars.
Confirm that the S-Y level is 1.0 ± 0.06 Vp-p.
2)
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Vp-p
co
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7-1
RDR-HX900
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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 ± 0.06Vp-p
1.0 ± 0.06Vp-p
Fig. 7-2.
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