ACER AT2645 - AT2646 - LCD TV - FACTORY MODE - WHITE BALANCE & LUMINANCE ADJUSTMENT - PC-MODE DISPLAY ADJUSTMENT

W/B & LUMINANCE
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: 

1. Minolta CA-110 or Equivalent Color analyzer Quantum Data Pattern Generator 802G , 802BT or equivalent instrument Input requirements:
2. Input Signal Type: YPbPr signal
3. 720P mode, TVBar100 pattern by 802G or 802BT.

• 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)

• Select source as “Component”.
• Set Smart picture as “User” and to be Contrast =50(TBD) (CMO), Brightness=50(TBD) (CMO), at normal menu mode.
• Apply “TVBar100” pattern with color bar pattern by signal generator.
• Enter factory mode menu: press “MENU+ “234” then enter FAC mode.

Alignment:

• 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  DC_OFFSET_R, ADC_OFFSET_G, ADC_OFFSET_B. Then store those values to NVM.

White- Balance alignment :

1. Select source as “HDMI1”
2. Apply Flat pattern (100% white pattern) , at FAC mode menu, select Factory -> Picture -> Colour Temp item
3. Set color temperature to “Standard”.
4. Adjust the R Gain, G_Gain, B_Gain values to meet “Standard” color coordinates specification below. Then store those values to NVM.
5. Set color temperature to “Warm”.
6. Adjust the R Gain, G_Gain, B_Gain values to meet “Warm” color coordinates specification below. Then store those values to NVM.
7. Set color temperature to “Cold”.
8. Adjust the R Gain, G_Gain, B_Gain values to meet “Cold” color coordinates specification below. Then store those values to NVM.

• Use Minolta CA-110 for color coordinates and luminance check.
• Luminance > 400 cd/m2 in the center of the screen when Brightness control at 100; Contrast control at 100
• Reset AV setting, smart picture shall be recalled to be “Standard” and Contrast= (TBD) (CMO), Brightness=(TBD) (CMO).

PC MODE DISPLAY ADJUSTMENT

• Equipment Requirements: Minolta CA-110 or Equivalent Color analyzer Chroma 2250 or equivalent PC signal generator.
• Input requirements:  Input Signal Type: PC VGA signal 1024X768/60Hz PC mode with PGCWRGB pattern. Input Signal Strength: 0.7 Vp-p linear voltage. Input Injection Point: PC D-SUB input.

ALIGNMENT METHOD

• Select source as “VGA”.
• Set Contrast = 50 (CMO) and Brightness=50 (CMO) , at Standard menu mode.
• Apply “PGCWRGB”(pattern-1) pattern by VGA pattern generator.
• Enter factory mode menu: press “MENU+ “234” then enter FAC mode

1. At FAC mode menu, select FACTORY->Picture ->ADC -> Auto Colour item. 
2. Then press “>” key to adjust ADC_GAIN_R, ADC_GAIN_G, ADC_GAIN_B and ADC_OFFSET_R, ADC_OFFSET_G, ADC_OFFSET_B. 
3. Then store those values to NVM.