JVC DT-V2000SU Service Manual page 54

DT-V2000SU
480P COMPONENT SIGNAL DEFLECTION ADJUSTMENT
480P 16: 9 OVER SCAN H.CENTER, H.SHIFT
Test equipment Signal generator (Cross-hatch circle pattern)
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Test points
Adjustment locations DD03 (H. POSITION), DD01 (H. SIZE)
1. Set the scan size to the OVER, and set the ASPECT to 16: 9 in the MENU
screen.
Input signal
100%
2. Input the cross-hatch circle pattern of the 480P component Y signal to the
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.r-
input A terminal.
/'
'
/ '\
V
3. Adjust the 0D03 to correct the horizontal center agree with the CRT screen
center.
4. Adjust the horizontal screen size to 95% over scan condition with the 0D01.
'\ /
"
Esctcheon
"--
~
~
95%
480P 16: 9 OVER SCAN V.CENTER, V.SHIFT
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Test equipment Signal generator (Cross-hatch circle pattern)
Test points
Adjustment locations
DD04 (V.SHIFT),
DD02 (V.SIZE)
1. Set the scan size to the OVER, and set the ASPECT to 16 : 9 in the MENU
screen.
2. Input the cross-hatch ciecle pattern(with the circle pattern) of the 480P
component Y signal to the input A terminal.
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'
/ I'\
3. Adjust the 0D04 to correct the vertical center agree with the CRT screen
I
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center.
240mm
4. Adjust the vertical scan size to 240mm with the 0D02.
'\ I/
"--
~
,.
480P 16: 9 OVER SCAN
SIDE PINCUSHION, TRAPEZOID, PARALLELOGRAM
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Test equipment Signal generator (Cross-hatch pattern)
Test points
Adjustment locations DD0S (SIDE PIN), DD0B (TRAPEZOID), DD07 (PARALLELOGRAM)
1. Set the scan size to the OVER, and set the ASPECT to 16: 9 in the MENU
screen.
2. Input the cross-hatch pattern of the 480P component Y signal to the input
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I \
A terminal.
3. If the vertical lines are distorted in the side pincushion condition, adjust the
0D05 to 2nd vertical lines from the screen edges become straight.
4. Confirm the trapezoidal distortion. If illeagal, adjust the 0D08 to correct the
\
I
distortion.
'
,
.
~
,
.
5. Confirm the parallelogram distortion. If illeagal, adjust the D007 to correct to straight
the distortion.
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38 No. 515198