Service manual

4. S-Video and HDTV Color Adjustment Procedure
Equipment:
- Pattern generator (VG-828)
- Lux meter ( CL-100) or CA 120
Procedure:
(a) S-video adjustment(current source is S-video)
(1) color spec x: 0.281±0.015 y: 0.297±0.015
(2) Change Timing and Pattern of pattern generator
Timing:480i (60Hz)
Pattern:80% Gray pattern
(3) Adjust R.G.B 9300K Gain to match spec
(b) Get spec for YpbPr (current source is S-video)
(1) Change Timing and Pattern of pattern generator
Timing:480i (60Hz)
Pattern:25% Gray pattern
(2) Read x value Îx0 ,read y value Îy0
(c) Ypbpr Offset adjustment(current source is YpbPr)
(1) color spec x: x0±0.010 y: y0±0.010
(2) The variance of color coordinate via Pb offset and Pr offset:
x y
Pb offset ↓ x ↓ y ↓
Pb offset ↑ x ↑ y ↑
Pr offset ↓ x ↑ y ↓
Pr offset ↑ x ↓ y ↑
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