White Balance Alignment - Hitachi CM621FET Service Manual

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G. WHITE BALANCE ALIGNMENT
G.1.1
Select timing #6 (VESA 68K 1024X768) with crosshatch pattern, adjust both horizontal and
vertical OSD's size control to get display size within 300x225p±2mm.
G.1.2
Disconnect RGB signal inputs, adjust OSD's brightness and G1 control to it's maximum
position.
G.1.3
Auto alignment (P103 must be short)
Use automatic alignment equipment and program to get color temperature within specified
coordinates.
G.1.4
Manual alignment
P103 must be short in order to into factory mode. Select OSD function to color temperature
adjustment.
G.1.5
For 9300 colour coordinate(note: the minimum value of RGB bias is 50) adjust bias G to get
Y=311, then adjust bias R to get X=281. Reduce G1 to Y=0.8FL, fine tune bias G to get Y=311,
and let raster color coordinate is X=281
G.1.6
Adjust brightness control to get raster is 0.06FL. reconnect R.G.B. input signal and change
pattern to 2 inch square, adjust gain B to get Y=311, gain R to get X=281.]
±
G.1.7
Check Y=51
G.1.8
Change pattern to fall white, adjust SB to get Y=32
G.1.9
Select 6500 and 5000 colour coordinate separately. Repeat item 2.5.5 ~ 2.5.8 to meet specificity.
1FL, if not adjust G to get Y=51FL, then repeat item 2.5.6
6500
5000
±
±
3, Y=311
3, Y=0.8
±
1FL.
X=313
Y=329
X=332
Y=349
3
±
0.1FL.

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