JVC DT-V2000SU Service Manual page 68

DT-V2000SU
1080i OVER SCAN CONTRAST
Test equipment Signal generator (Cross-hatch pattern:100IRE)
Test points TP-47G [CRT SOCKET PWB]
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Adjustment locations SF01 (CONTRAST)
1. Set the scan size to OVER in the MENU screen.
2. Input the 1080i gnal to the input B terminal.
.;;
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3. Connect the oscilloscope to the TP-47G.
1 vertical cycle
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4. Adjust the waveform level between 0% black and 100% white to 30Vp-p with SF01.
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IL
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I
I
30Vp-p
I
I
I
I,
I
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640 x 480 VGA RGB(INPUT C) CONTRAST
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Test equipment Signal generator (Cross-hatch pattern:100IRE)
Test points TP-47G [CRT SOCKET PWB]
Adjustment locations SG01 (CONTRAST)
1. Set the input mode of the INPUT A to RGB.
2. Input the VGA(640 x 480) cross-hatch pattern signal to the input A terminal.
3. Connect the oscilloscope to the TP-47G. '
1 vertical cycle
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4. Adjust the waveform level between 0% black and 100% white to 30Vp-p with SG01.
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IL
I
•
I
30Vp-p
I
I
I
~
I
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640 x 480 VGA RGB(INPUT C) CONTRAST
Test equipment Signal generator (Cross-hatch pattern:100IRE)
•
Test points TP-47G [CRT SOCKET PWB]
Adjustment locations
SH01 (CONTRAST)
1. Input the VGA(640 x 480) cross-hatch pattern signal to the input C terminal.
2. Connect the oscilloscope to the TP-47G.
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3. Adjust the waveform level between 0% black and 100% white to 30Vp-p with SH01.
1 vertical cycle
~ L
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I
I
I
30Vp-p
I
I
I
I,
I
......
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52 No.51519B