LG 55UB820T, Руководство по обслуживанию

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Only for training and service purposes
EDID Block 1, Bytes 128-255 [80H-FFH]
* Checksum(HDMI1/2/3)
4.2. White Balance Adjustment
4.2.1. Overview
▪ W/B adj. Objective & How-it-works
(1) Objective: To reduce each Panel's W/B deviation
(2) How-it-works : When R/G/B gain in the OSD is at 192, it
means the panel is at its Full Dynamic Range. In order to
prevent saturation of Full Dynamic range and data, one
of R/G/B is fixed at 192, and the other two is lowered to
find the desired value.
(3) Adjustment condition : normal temperature
1) Surrounding Temperature : 25 °C ± 5 °C
2) Warm-up time: About 5 Min
3) Surrounding Humidity : 20 % ~ 80 %
4.2.2. Equipment
(1) Color Analyzer: CA-210 (LED Module : CH 14)
(2) Adjustment Computer(During auto adj., RS-232C protocol
is needed)
(3) Adjustment Remote control
(4) Video Signal Generator MSPG-925F 720p/216-Gray
(Model: 204, Pattern: 49)
→ Only when internal pattern is not available
•
Color Analyzer Matrix should be calibrated using CS-100.
4.2.3. Equipment connection MAP
4.2.4. Adj. Command (Protocol)
<Command Format>
- LEN: Number of Data Byte to be sent
- CMD: Command
- VAL: FOS Data value
- CS: Checksum of sent data
- A: Acknowledge
Ex) [Send: JA_00_DD] / [Ack: A_00_okDDX]
▪ RS-232C Command used during auto-adjustment.
Ex) wb 00 00 -> Begin white balance auto-adj.
wb 00 10 -> Gain adj.
ja 00 ff -> Adj. data
jb 00 c0
...
...
wb 00 1f -> Gain adj. completed
*(wb 00 20(Start), wb 00 2f(end)) -> Off-set adj.
wb 00 ff -> End white balance auto-adj.
▪ Adj. Map
Input FFh (Checksum)
HDMI1 E7 2D
HDMI2 E7 1D
HDMI3 E7 0D
0 1 2 3 4 5 6 7 8 9 A B C D E F
80 02 03 3C F1 54 10 9F 04 13 05 14 03 02 12 20 21
90 22 15 01 5D 5E 5F 62 63 64 29 3D 06 C0 15 07 50
A0 09 57 07 6E 03 0C 00 30 00 B8 3C 20 00 80 01 02
B0 03 04 E3 05 03 01 E5 0E 60 61 65 66 01 1D 80 18
C0 71 1C 16 20 58 2C 25 00 40 84 63 00 00 9E 01 1D
D0 00 72 51 D0 1E 20 6E 28 55 00 40 84 63 00 00 1E
E0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
F0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0D
START 6E A 50 A LEN A 03 A CMD A 00 A VAL A CS STOP
RS-232C COMMAND
[CMD ID DATA]
Explanation
wb 00 00 Begin White Balance adjustment
wb 00 10 Gain adjustment(internal white pattern)
wb 00 1f Gain adjustment completed
wb 00 20 Offset adjustment(internal white pattern)
wb 00 2f Offset adjustment completed
wb 00 ff
End White Balance adjustment
(internal pattern disappears)
Color Analyzer
Computer
Pattern Generator
RS-232C
RS-232C
RS-232C
Probe
Signal Source
* If TV internal pattern is used, not needed
Adj. item
Command
(lower case ASCII)
Data Range
(Hex.)
Default
(Decimal)
CMD1 CMD2 MIN MAX
Cool
R Gain j g 00 C0
G Gain j h 00 C0
B Gain j i 00 C0
R Cut
G Cut
B Cut
Medium
R Gain j a 00 C0
G Gain j b 00 C0
B Gain j c 00 C0
R Cut
G Cut
B Cut
Warm
R Gain j d 00 C0
G Gain j e 00 C0
B Gain j f 00 C0
R Cut
G Cut