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Electrical Adjustments
● Circuit Adjustments
[Adjustment Condition]
● Input signal
Computer signal .................... 0.7Vp-p/75Ω terminated,
16 steps gray scale pattern (XGA),
100% and 50% white pattern (XGA),
1 dot line pattern (XGA)
Composite video signal.......... 1.0Vp-p/75Ω terminated,
16 steps gray scale pattern,
color bar pattern (PAL, NTSC)
100% and 50% white pattern
Component Video signal........ 0.7Vp-p/75Ω terminated,
16 steps gray scale pattern (480i),
color bar pattern (480i)
● Picture control mode ................ “STANDARD” mode unless otherwise noted.
CAUTION: The each circuit has been made by the fine adjustment at factory. Do not attempt to adjust the following
adjustments except requiring the readjustments in servicing otherwise it may cause loss of performance
and product safety.
16 steps gray scale pattern
WARNING : USE UV RADIATION EYE
AND SKIN PROTECTION
DURING SERVICING
CAUTION: To prevent suffer of UV radiation,
those adjustments must be com-
pleted within 25 minutes.
Note :
■ The following adjustment is the adjustment item for
Assembly power.
1-1. +6V voltage adjustment
■ The following adjustment is the adjustment item for
Switching Regulator.
1-2. +25V voltage adjustment
■ The following adjustmenta are the adjustment items for
Terminal board-AV. The adjustment data is stored to
Terminal board-AV (IC2143).
2. AV video signal adjustment
3. AV 3DNR-PLL lock check
4. AV color and tint adjustment
■ The following adjustment is the adjustment item for
Assembly sub power and Assembly main. The adjustment
data is stored to Assembly main (IC1811).
5. Fan driving voltage adjustment
■ The following adjustments are the adjustment items for
Assembly main. The adjustment data is stored to
Assembly main (IC1811).
6. Video signal center adjustment
7. PSIG adjustment
8. Gain adjustment (PC)
9. Gain adjustment (AV)
10. Gain adjustment (Component)
11. Black level adjustment (PC)
12. Common center adjustment
13. Panel luminance adjustment (PC)
14. White balance adjustment (PC)
15. Panel luminance adjustment (AV)
16. White balance adjustment (AV)
17. White balance adjustment (AV 2Lamps)
■ The following adjustment data is stored to Assembly main
(IC871).
18. Color shading correction.
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