JVC DT-V2000SU Service Manual page 58

DT-V2000SU
720P COMPONENT DEFLECTION ADJUSTMENT
720P 16: 9 OVER SCAN H.CENTER, H.SHIFT
Test equipment
Signal generator (Cross-hatch circle pattern)
•
Test points
Adjustment locations DG03 (H.SHIFT), DG01 (H. SIZE)
1. Set the scan size to the OVER and set the ASPECT to 16: 9 in the MENU
screen.
Input signal
2. Input the cross-hatch circle pattern of the 720P component Y signal to the
100%
..
input A terminal.
/
/
'
3. Adjust the DG03 to correct the horizontal center agree with the CRT screen
V \
center.
4. Adjust the horizontal screen size to 95% over scan condition with the DG01.
' /
Escutcheon
~
95%
720P 16: 9 OVER SCAN V.CENTER, V.SHIFT
•
Test equipment Signal generator (Cross-hatch circle pattern)
Test points
Adjustment locations DG04 (V. SHIFT), DG02 (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 pattern(with the circle pattern) of the 720P component
/"
-----
i
Y signal to the input A terminal. /
/
I,
3. Adjust the DG04 to correct the vertical center agree with the CRT screen
center.
240mm
•
4.
Adjust the vertical scan size to 240mm with the DG02.
'
/
720P 16: 9 OVER SCAN SIDE PINCUSHION, TRAPEZOID, PARALLELOGRAM
•
Test equipment Signal generator (Cross-hatch pattern)
Test points
Adjustment locations DG05 (SIDE PIN), DG0S (TRAPEZOID), DG07 (PARALLELOGRAM)
1. Set the scan size to the OVER, and set the ASPECT to 16 : 9 in the MENU
screen.
II
2. Input the cross-hatch pattern of the 720P component Y signal to the input A
I I
terminal.
I
'
3. If the vertical lines are distorted in the side pincushion condition, adjust the
I
I
I I
DG05 to 2nd vertical lines from the screen edges become straight.
I I
4. Confirm the trapezoidal distortion. If illeagal, adjust the DG08 to correct the I I
I I
distortion.
11
5. Confirm the parallelogram distortion. If illeagal, adjust the DG07 to correct
.~
t
the distortion.
to straight
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No. 51519B