R&D
SHENZHEN
Date
2013/12/2
Page
12
- 6 -
- 6 -
Index
Draft
of 12 Pages
Name
1.
Insert a grey test pattern with 25IRE signal amplitude
2.
Measure the color co-ordinates near the center of the screen
3.
Adjust with “R_ Offset”, “G_ Offset” and “B_ Offset” to above color co-ordinates values.
3.2.2
White balance
This alignment has to be done for the following standards:
1.
Insert a grey test pattern with 80IRE signal amplitude
2.
Measure the color co-ordinates near the center of the screen.
3. Adjust with “R_ Gain”, “G_ Gain” and “B_ Gain” to the following color co-ordinates
values:
Source
HDMI
CMPT/AV/TV/PC
REMARK
Color Temp
Normal
Normal
R- gain
0~255
-127~+127
Need to adjust
G-gain
128
0
Not need to adjust
B-gain
0~255
-127~+127
Need to adjust
R-offset
0~255
-127~+127
Need to adjust
G-offset
128
0
Not need to adjust
B-offset
0~255
-127~+127
Need to adjust
The default values have a close relation with panel brightness. After white balance
alignment, a picture performance check should be done: the brightest scales of 16-
scale grey pattern should be distinguishable in vibrant mode (max contrast),
and the
light output at OOB( out of box ) use whole white signal (white 100 IRE ),it should
be more than 350nits
.
Before white balance alignment, we must make sure
White Balance Init
had been
done.
The white balance values in normal of HDMI are the base of other value, the other
sources are the offset on Norma of HDMI, so we must adjust normal of HDMI first,
then other source should be adjusted in the end.
Since the White Point and Offset alignments are influencing each other, an
interactive process maybe needed to get both alignments to the required values.
White balance status: picture preset is vibrant, Dynamic Backlight & light sensor is
off.
Summary of Contents for L55E5800UDS
Page 21: ...Chassis Block Diagram MS1369KE LA 11 Chassis Block Diagram...
Page 22: ...Chassis Block Diagram 12 Chassis Block Diagram 6M40...
Page 23: ...13 Power Supply Block Diagram...
Page 24: ...14 Power Supply Block Diagram...
Page 38: ...42 Trouble Shooting No Picture...
Page 39: ...43 Trouble Shooting No Sound...
Page 40: ...44 Abnormal Picture Trouble Shooting...
Page 41: ...45 Network Fault wired Trouble Shooting...
Page 42: ...46 Trouble Shooting Network Fault wireless...
Page 43: ......