JVC DT-V2000SU Service Manual page 46

DT-V2000SU
NTSC DEFLECTION ADJUSTMENT
NTSC 4: 3 H.CENTER, H.SHIFT
Test equipment Signal generator (Cross-hatch pattern)
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Test points
Adjustment locations DA03 (H. SHIFT), DA01 (H. SIZE)
1. Set the scan size to the OVER, and set the ASPECT to 4 : 3 in the MENU
Scan size(95%)
screen.
-::
-
- -------------------
-,
2. Input the cross-hatch pattern signal of the NTSC to the input B terminal.
3. Set the BRIGHT and CONTRAST VR on the front panel to the click position.
4. Adjust the DA03 to the horizontal center of input signal agree with the CRT
screen center.
5. Adjust the horizontal screen size to 95% over scan condition with the DA01.
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14
..
Picture size (100%)
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NTSC 4: 3 V.CENTER, V.SHIFT
Test equipment Signal generator (Cross-hatch pattern)
Test points
Adjustment locations DA04 (V. SHIFT), DA02 (V. SIZE)
1. Set the scan size to the OVER, and set the ASPECT to 4 : 3 in the
MENU screen.
- - - - - - - - - - - - - -- - -
- - -
-
- -
,--
-,--r-
2. Input the cross-hatch pattern signal of the NTSC to the input B
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terminal.
3. Set the BRIGHT and CONTRAST VR on the front panel to the click
Scan
Picture
position.
size size
(95%)
(100%)
4. Adjust the DA04 to the vertical center of input signal agree with the
CRT screen center.
5. Adjust the vertical screen size to 95% over scan condition with the
-
DA02.
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NTSC 4: 3 SIDE PINCUSHION, TRAPEZOID, PARALLELOGRAM
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Test equipment Signal generator (Cross-hatch pattern)
Test points
Adjustment locations
DA0S (SIDE PIN), DAOB (TRAPEZOID), DA07 (PARALLELOGRAM)
1. Set the scan size to the OVER, and set the ASPECT to 4 : 3 in the
MENU screen.
2. Input the cross-hatch pattern signal of the NTSC to the input B
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11
terminal.
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3. If the vertical lines are distorted in the side pircushion condition,
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adjust the DA05 to 2nd vertical lines from the screen edges become
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straight.
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4. Confirm the trapezoidal distortion. If illeagal, adjust the DA08 to
correct the distortion.
L
_J
5. Confirm the parallelogram distortion. If illeagal, adjust the DAO? to
to straight
correct the distortion.
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30 No.515198