White Balance Adjustment - LG 42LH30 Service Manual

- EDID Block 1 table =
0 1 2 3 4 5 6
0 02 03 1F F1 47 90 22
10 09 07 07 6B 03 0C 00
20 3A 80 18 71 38 2D 40
30 1E 01 1D 80 18 71 1C
40 00 00 9E 01 1D 00 72
50 8A 42 00 00 1E 8C 0A
60 00 7E 8A 42 00 00 18
70 20 25 00 7E 8A 42 00
2) HDMI 2 [C/S: XXAA]
- EDID Block 0 table =
0 1 2 3 4 5 6
0 00 FF FF FF FF FF FF
10 XX XX 01 03 80 73 41
20 09 48 4C A1 08 00 A9
30 01 01 01 01 01 01 02
40 45 00 7E 8A 42 00 00
50 6E 28 55 00 7E 8A 42
60 3F 1F 52 10 00 0A 20
70 00 4C 47 20 54 56 0A
- EDID Block 1 table =
0 1 2 3 4 5 6
0 02 03 1F F1 47 90 22
10 09 07 07 6B 03 0C 00
20 3A 80 18 71 38 2D 40
30 1E 01 1D 80 18 71 1C
40 00 00 9E 01 1D 00 72
50 8A 42 00 00 1E 8C 0A
60 00 7E 8A 42 00 00 18
70 20 25 00 7E 8A 42 00
3) HDMI 3 [C/S: XX9A]
- EDID Block 0 table =
0 1 2 3 4 5 6
0 00 FF FF FF FF FF FF
10 XX XX 01 03 80 73 41
20 09 48 4C A1 08 00 A9
30 01 01 01 01 01 01 02
40 45 00 7E 8A 42 00 00
50 6E 28 55 00 7E 8A 42
60 3F 1F 52 10 00 0A 20
70 00 4C 47 20 54 56 0A
- EDID Block 1 table =
0 1 2 3 4 5 6
0 02 03 1F F1 47 90 22
10 09 07 07 6B 03 0C 00
20 3A 80 18 71 38 2D 40
30 1E 01 1D 80 18 71 1C
40 00 00 9E 01 1D 00 72
50 8A 42 00 00 1E 8C 0A
60 00 7E 8A 42 00 00 18
70 20 25 00 7E 8A 42 00
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
7 8 9 A B C D
20 05 04 03 02 26 15 07
10 00 B8 2D E3 05 03 01
58 2C 04 05 7E 8A 42 00
16 20 58 2C 25 00 7E 8A
51 D0 1E 20 6E 28 55 00
D0 8A 20 E0 2D 10 10 3E
26 36 80 A0 70 38 1B 40
00 1A 00 00 00 00 00 00
7 8 9 A B C D
00 1E 6D 02 00 01 01 01
78 0A CF 74 A3 57 4C B0
40 81 80 61 40 45 40 31
3A 80 18 71 38 2D 40 58
1E 01 1D 00 72 51 D0 1E
00 00 1E 00 00 00 FD 00
20 20 20 20 20 00 00 00
20 20 20 20 20 20 20 01
7 8 9 A B C D
20 05 04 03 02 26 15 07
20 00 B8 2D E3 05 03 01
58 2C 04 05 7E 8A 42 00
16 20 58 2C 25 00 7E 8A
51 D0 1E 20 6E 28 55 00
D0 8A 20 E0 2D 10 10 3E
26 36 80 A0 70 38 1B 40
00 1A 00 00 00 00 00 00
7 8 9 A B C D
00 1E 6D 02 00 01 01 01
78 0A CF 74 A3 57 4C B0
40 81 80 61 40 45 40 31
3A 80 18 71 38 2D 40 58
1E 01 1D 00 72 51 D0 1E
00 00 1E 00 00 00 FD 00
20 20 20 20 20 00 00 00
20 20 20 20 20 20 20 01
7 8 9 A B C D
20 05 04 03 02 26 15 07
20 00 B8 2D E3 05 03 01
58 2C 04 05 7E 8A 42 00
16 20 58 2C 25 00 7E 8A
51 D0 1E 20 6E 28 55 00
D0 8A 20 E0 2D 10 10 3E
26 36 80 A0 70 38 1B 40
00 1A 00 00 00 00 00 00
4) RGB [C/S : XX]
- EDID Block 0 table =
E F
0 1 2 3
50
0 00 FF FF FF
02
10 XX XX 01 03
00
20 09 48 4C A1
42
30 01 01 01 01
7E
40 45 00 7E 8A
96
50 6E 28 55 00
30
60 3F 1F 52 10
CA
70 00 4C 47 20
* Address 10/11 and 7F means Manufacture Week and
Checksum. So this data will be change.
E F
01

5.3. White Balance Adjustment

23
(1) Overview
40
- Objective: To reduce each Panel's W/B deviation
2C
- How-it-works : When R/G/B gain in the OSD is at 192, it
20
means the panel is at its Full Dynamic Range. In order to
39
FC prevent saturation of Full Dynamic range and data, one of
XX R/G/B is fixed at 192, and the other two is lowered to find
the desired value.
- Adj. condition : normal temperature
1) Surrounding Temperature: 25±5ºC
2) Warm-up time: About 5 Min
E F
3) Surrounding Humidity: 20% ~ 80%
50
02
(2) Equipment
00
1) Color Analyzer: CA-210 (NCG: CH 9 / WCG: CH12)
42
2) Adj. Computer(During auto adj., RS-232C protocol is
7E
needed)
96
3) Adjust Remocon
30
4) Video Signal Generator MSPG-925F 720p/216-Gray
BA
(Model:217, Pattern:78)
-> Only when internal pattern is not available
• Color Analyzer Matrix should be calibrated using CS-1000.
(3) Equipment connection MAP
E F
01
23
40 Probe
2C
20
39
FC
XX
Connection Diagram of Automatic Adjustment
(4) Adj. Command (Protocol)
E F 1) RS-232C Command used during auto-adj.
50
RS-232C COMMAND
02
[CMD ID DATA]
00
wb 00 00
42
wb 00 ff
7E
96
Ex) wb 00 00 -> Begin white balance auto-adj.
30
wb 00 10 -> Gain adj.
AA
ja 00 ff -> Adj. data
jb 00 c0
...
...
wb 00 1f -> Gain adj. complete
*(wb 00 20(start), wb 00 2f(end)) -> Off-set adj.
wb 00 ff -> End white balance auto adj.
- 11 -
4 5 6 7 8 9 A B
FF FF FF 00 1E 6D 02 00
68 73 41 78 0A CF 74 A3
08 00 A9 40 81 80 61 40
01 01 02 3A 80 18 71 38
42 00 00 1E 01 1D 00 72
7E 8A 42 00 00 1E 00 00
00 0A 20 20 20 20 20 20
54 56 0A 20 20 20 20 20
Co lo r Analyzer
Co m p ut er
RS -232C
Pat t ern Generat o r
Signal Source
* If TV internal pattern is used, not needed
Meaning
Begin White Balance adj.
End White Balance adj.(Internal pattern disappeared)
LGE Internal Use Only
C D E F
01 01 01 01
57 4C B0 23
45 40 31 40
2D 40 58 2C
51 D0 1E 20
00 FD 00 39
00 00 00 FC
20 20 00 XX
RS -232C
RS -232C