JVC DT-V2000SU Service Manual page 60

DT-V2000SU
1080i COMPONENT SIGNAL DEFLECTION ADJUSTMENT
1080i 16: 9 OVER SCAN H.CENTER, H.SHIFT
Test equipment Signal generator (Cross-hatch circle pattern)
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Test points
Adjustment locations DJ03 (H. SHIFT), DJ01 (H. SIZE)
1. Set the scan size to the OVER, and set the ASPECT to 16: 9 in the MENU
.
Input signal
screen.
100%
2. Input the cross-hatch pattern (with the circle pattern) of the 1080i component
/"
~
~
V '
Y signal to the input A terminal.
/ I"\
3. Adjust the DJ03 to correct the horizontal center agree with the CRT screen
center.
4. Adjust the horizontal screen size to 95% over scan condition with the DJ01.
'
I/
"-
/
Escutcheon
'
95%
1080i 16: 9 OVER SCAN V.CENTER, V.SHIFT
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Test equipment
Signal generator (Cross-hatch circle pattern)
Test points
Adjustment locations
DJ04 (V. SHIFT), DJ02 (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 circle pattern of the 1080i component Y signal to the
input A terminal.
/ ~ i
V '
/ "\
3. Adjust the DJ04 to correct the vertical center agree with the CRT screen
•
center.
240mm
4. Adjust the vertical scan size to 240mm with the DJ02.
"\
,/
I'-..
/
,
1080i 16: 9 OVER SCAN
SIDE PINCUSHION, TRAPEZOID, PARALLELOGRAM
Test equipment Signal generator (Cross-hatch pattern)
•
Test points
Adjustment locations DJ0S (SIDE PIN), DJ08 (TRAPEZOID), DJ07 (PARALLELOGRAM)
1. Set the scan size to the OVER, and set the ASPECT to 16: 9 in the MENU
screen.
II
I
I
2. Input the cross-hatch pattern of the 1080i component Y signal to the input A
I I
terminal.
I I
3. If vertical lines are distorted in side pincushion condition, adjust the DJ05 to
I I
2nd vertical lines from the screen edges become straight.
I I
I I
4. Confirm the trapezoidal distortion. If illeagal, adjust the DJ08 to correct the I
I
distortion.
5. Confirm the parallelogram distortion. If illeagal, adjust the DJ07 to correct
t
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the distortion.
to straight
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No.51519B