Adjustment - Haier LT19Z6 Service Manual

7. Adjustment

7.1 White balance adjustment
Alignment method:
Initial Set-up:
1. Select source as "YPbPr".
2. Set Contrast = 58 and Brightness=48, Color=58, at normal menu mode.
3. Apply "80% white pattern or Flat80 pattern by Component video generator.
4. Enter factory mode menu: press MENU + Numeric keys 1999".
Alignment:
1. Apply Flat pattern (80% white pattern).
2. Set color temperature to "NORMAL".
3. At factory mode menu, adjust the Scaler R Gain, Scaler G Gain, Scaler B Gain values to meet
"NORMAL" color coordinates specification below. Then store those values to NVM
4. Set color temperature to "COOL".
5. At factory mode menu, adjust the Scaler R Gain, Scaler G Gain, Scaler B Gain values to meet "COOL"
color coordinates specification below. Then store those values to NVM
6. Set color temperature to "WARM".
7. At factory mode menu, adjust the Scaler R Gain, Scaler G Gain, Scaler B Gain values to meet "WARM"
color coordinates specification below. Then store those values to NVM
Color temperature Normal/Warm/Cool (x, y) co-ordinates specification:
`
:
Note
1. Use Knoica Minolta CS-200 for color coordinates and luminance check.
2. For suitable mass production at factory, colour analyzers CA-210 can be applied. But, befor
measureing ,all CA-210 should be coordinates and proofread with a Charoma Meter (CS-200) or
equivalent instrument and a reference TV set.
3. Check the luminance at the center of the screen with 100% White. And to set Brightness control at 100;
Contrast control at 100.
Luminance
> 200 cd/m2 (Typ.) [ For LE22K097/LT22Z6 only at color temp.- *warm mode ]
> 250 cd/m2 (Typ.) [ For LE24K097/LT24Z6 only at color temp.- *warm mode ]
4. The defult values of Scaler R Gain, Scaler G Gain, Scaler B Gain are all 128. When panel WD is made
adjustment, the three values could not be over 128. That is preventing color saturation after adjusting
Contrast and Brithness setting at main menu.
Picture Mode
Normal (9000oK)
Cool (12000oK)
Warm (6500oK)
Table 5: Reading with Knoica Minolta CS-200.
> 200cd/m2 (Typ.) [ For LE19K097/LT19Z6 only at color temp.- *warm mode ]
x
0.289±0.003
0.272±0.003
0.314±0.003
50
y
0.291±0.003
0.277±0.003
0.319±0.003