Acer AT2231 Wartungshandbuch PDF herunterladen (Seite 37)

37

White-Balance, Luminance Adjustment

Approximately 30 minutes should be allowed for warm up before proceeding white balance adjustment.

YPbPr Mode display adjustment

White balance adjustment (B)

General set-up:

Equipment Requirements: Minolta CA-110 or Equivalent Color analyzer

Quantum Data Pattern Generator 802G, 802BT or equivalent instrument

Input requirements:

Input Signal Type: YPbPr signal

1. 720P mode, TVBar100 pattern by 802G or 802BT.

2. Select Smart picture to User mode and check the x, y data.

Input Signal Strength: 1 Vpp for Y signal; 700 mVpp for Pb & Pr signal

Input Injection Point: YPbPr (RAC jack)

720P, TVBar100 pattern

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Alignment method:

Initial Set-up:

1. Select source as “Component”.

2. Set Smart picture as “User” and to be Contrast =50(TBD) (CMO), Brightness=50(TBD) (CMO), at normal menu

mode.

3. Apply “TVBar100” pattern with color bar pattern by signal generator.

4. Enter factory mode menu: press “MENU+ “234” then enter FAC mode.

Alignment:

1. At FAC mode menu, select FACTORY->Picture ->ADC -> Auto Colour item. Then press “>” key to adjust

ADC_GAIN_R, ADC_GAIN_G, ADC_GAIN_B and ADC_OFFSET_R, ADC_OFFSET_G, ADC_OFFSET_B. Then

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