2. ADJUSTMENTS 2-1. Adjustments to be done Adjustments Necessary equipment 1. VDD adjustment, Power supply, Digital voltmeter VGH, VSH, VGL, Vcc9 voltage check 2. Bright,Sub-bright adjustment Power supply, Signal generator, Oscilloscope 3. TINT color adjustment Power supply, Signal generator, Oscilloscope 4.
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2. Bright, Sub-bright adjustment VDD (+5 V) 22 KΩ M-PCB IF signal Signal 2.30 ± 0.05 V generator CP301 0.80 ± 0.05 V VCC1-1 CP706 Stabilizer CP707 CP708 Oscilloscope • Conditions (1) Apply 11.50 ± 0.05 [V] on Vcc1-1. (2) Signals: provide color bar pattern (white 75 %) composite video signal from CP196. Signal level;...
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3. TINT color adjustment M-PCB IF signal Signal generator VCC1-1 Stabilizer CP706 Oscilloscope • Conditions (1) Apply 11.50 ± 0.05 [V] on Vcc1-1. (2) Signals: provide color bar pattern (white 75 %) composite video signal from CP196. Signal level; 1Vp-p ± 0.01V (75 ohm termination), conforming to NTSC-M system. (3) Connect 47kohm resistor between CP304 and CP300 (GND).
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4. VCOM DC coarse adjustment M-PCB IF signal Signal generator B output VCC1-1 Stabilizer CP710 Oscilloscope • Conditions (1) Apply 11.50 ± 0.05 [V] on Vcc1-1. (2) Signals: provide color bar pattern (white 75 %) composite video signal from CP196. Signal level;...