Haier LT22M1CW, Service Manual

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22”LCD TV Haier LT22M1CWA&LT22M1CW
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7. 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 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
Alignment method:
Initial Set-up:
1. Select source as “Component”.
2. Set Picture mode as “User” and to be Contrast =50 (CMO), Brightness=50 (CMO), at normal menu mode.
3. Apply “TVBar100” pattern with color bar pattern by signal generator.
4. Enter factory mode menu: press Numeric keys “062596” + DISPLAY key. (FAC mode menu).Then select
“Factory” item.
Alignment:
1. At FAC mode menu, select AUTO_COLOR item. Then press “OK” key to adjust ADC_GAIN_R, ADC_GAIN_G,
ADC_GAIN_B and ADC_OFFSET_R, ADC_OFFSET_G, ADC_OFFSET_B. Then store those values to NVM.
2. Apply Flat80 pattern (80% white pattern).
3. Set color temperature to “NORMAL”.
4. At FAC mode menu, adjust the CLR TEMP R, CLR TEMP G, CLR TEMP B values to meet “NORMAL” color
coordinates specification below. Then store those values to NVM.
Color temperature Normal/Warm/Cold (x, y) co-ordinates specification:
Normal Cool Warm
CCT 6500º K 7500º K 5800º K
x
0.314
±
0.025 0.300
±
0.025 0.326
±
0.025
y
0.324
±
0.025 0.310
±
0.025 0.335
±
0.025
Table: Reading with Minolta CA-110.
5. Check the 16 grayscale pattern should be distinguished and color bar is correct