LG 55EM970V Service Manual page 17

# HDMI 4
EDID Block 0, Bytes 0-127 [00H-7FH]
0 1 2 3 4 5
00 00 FF FF FF FF FF
10 01 16 01 03 80 A0
20 0F 50 54 A1 08 00
30 01 01 01 01 01 01
40 45 00 A0 5A 00 00
50 40 70 36 00 A0 5A
60 3E 1E 53 10 00 0A
70 00 4C 47 20 54 56
EDID Block 1, Bytes 128-255 [80H-FFH]
0 1 2 3 4 5
00 02 03 37 F1 4E 10
10 22 15 01 26 15 07
20 B8 2D 20 C0 0E 01
30 10 28 10 E3 05 03
40 2C 45 00 A0 5A 00
50 20 58 2C 25 00 A0
60 D0 1E 20 6E 28 55
70 00 00 00 00 00 00
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: 217, Pattern: 78)
→ Only when internal pattern is not available
▪ Color Analyzer Matrix should be calibrated using CS-1000.
4.2.3. Equipment connection MAP
Probe
* If TV internal pattern is used, not needed
Copyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
6 7 8 9 A B C D
FF 00 1E 6D 01 00 01 01
5A 78 0A EE 91 A3 54 4C
31 40 45 40 61 40 71 40
02 3A 80 18 71 38 2D 40
00 1E 66 21 50 B0 51 00
00 00 00 1E 00 00 00 FD
20 20 20 20 20 20 00 00
0A 20 20 20 20 20 20 20
6 7 8 9 A B C D
9F 04 13 05 14 03 02 12
50 09 57 07 78 03 0C 00
4F 3F FC 08 10 18 10 06
01 02 3A 80 18 71 38 2D
00 00 1E 01 1D 80 18 71
5A 00 00 00 9E 01 1D 00
00 A0 5A 00 00 00 1E 00
00 00 00 00 00 00 00 00
Co lo r Analyzer
RS -232C
Co m p ut er
RS -232C
RS -232C
Pat t ern Generat o r
Signal Source
4.2.4. Adj. Command (Protocol)
<Command Format>
E F
START 6E A 50 A LEN A 03 A
01 01
- LEN: Number of Data Byte to be sent
99 26
- CMD: Command
81 80
- VAL: FOS Data value
58 2C
- CS: Checksum of sent data
1B 30
- A: Acknowledge
00 3A
Ex) [Send: JA_00_DD] / [Ack: A_00_okDDX]
00 FC
01 43
▪ RS-232C Command used during auto-adjustment.
RS-232C COMMAND
[CMD ID
E F
wb 00
20 21
wb 00
40 00
wb 00
10 16
40 58 wb 00
1C 16
wb 00
72 51
wb 00
00 00
00 E1
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
Adj. item
R Gain
G Gain
B Gain
Cool
R Cut
G Cut
B Cut
R Gain
G Gain
B Gain
Medium
R Cut
G Cut
B Cut
R Gain
G Gain
Warm B Gain
R Cut
G Cut
- 17 -
CMD A 00 A VAL
Explantion
DATA]
00 Begin White Balance adjustment
10 Gain adjustment(internal white pattern)
1f Gain adjustment completed
20 Offset adjustment(internal white pattern)
2f Offset adjustment completed
End White Balance adjustment
ff
(internal pattern disappears )
Command Data Range
(lower caseASCII) (Hex.)
CMD1 CMD2 MIN MAX
j g 00 C0
j h 00 C0
j i 00 C0
j a 00 C0
j b 00 C0
j c 00 C0
j d 00 C0
j e 00 C0
j f 00 C0
LGE Internal Use Only
A CS STOP
Default
(Decimal)