3-11
Part 3: Adjustment
2.4 Contrast Adjustment
Measuring equipment ............Oscilloscope
Input signal ...........................16-step gray scale
Enter the service mode.
Adjust part A of the signal waveform at each test point to the minimum with the
VOLUME +/- button.
1. Enter computer input mode and input a 16-step gray scale signal.
Item No. Test point Adjustment
4 TP-R1 Computer red contrast
5 TP-G1 Computer green contrast
6 TP-B1 Computer blue contrast
2 Enter AV input mode and input a 16-step gray scale signal.
Item No. Test point Adjustment
4 TP-R1 AV red contrast
5 TP-G1 AV green contrast
6 TP-B1 AV blue contrast
3. Enter component input mode and input a 16-step gray scale signal (480i signal).
Item No. Test point Adjustment
4 TP-R1 Component red contrast
5 TP-G1 Component green contrast
6 TP-B1 Component blue contrast
Fig. 3-4
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