8.2. Sub contrast adjustment (HDTV)
Preparation
PICTURE:VIVID (NORMAL SET)
ADJUSTMENT DATA: BRIGH, CONT
Measurement Instrument Remarks
1. Oscilloscope
2. Alignment equipment
Extension cable kit (Part No.TZSC0704)
3. Remote control
Picture menu: VIVID
Picture pattern: 10 stair-step
Adjustment Procedures
1. Apply the HD 10 stair-step signal to HD baseband signal.
2. Connect the Oscilloscope to CN3303-A38 (G out of DR-Board).
3. Adjust Sub contrast so that B-W is 0.60V±0.02V.
4. Also connect the oscilloscope to CN3303-A34 (R out) and observe both waveforms simultaneously.
5. Adjust R-drive so that the amplitude of R signal waveform is same as G signal.
6. Connect the Oscilloscope to CN3303-A38 (G out) and CN3303-A36 (B out), and observe the both waveforms simultaneously.
7. Adjust B-drive so that the amplitude of B signal is same as G signal.
14
TU-PT700U
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