LG 42LH40 (CHASSIS:LA92G) Service Manual ▷ View online
3) HDMI II [C/S: 8A17]
EDID Block 0 table =
EDID Block 1 table =
4) HDMI III [C/S: 8A07]
EDID Block 0 table =
EDID Block 1 table =
5) HDMI IV [C/S: 8AF7]
EDID Block 0 table =
EDID Block 1 table =
6) RGB [C/S: F6BC]
EDID Block 0 table =
EDID Block 1 table =
5.3. White Balance adjustment
5.3.1. Overview
• W/B adjustment : Objective & How-it-works
- Objective: to reduce each Panel’s W/B deviation
- How-it-works: when R/G/B gain in the OSD is at 192, it
- 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.
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.
5.3.2. Equipment
1) Color Analyzer : CA-210 (NCG: CH 9 / WCG: CH12
/LED Module:CH14)
2) Adjustment Computer (During auto adj., RS-232C
protocol is needed)
3) Adjustment R/C
4) Video Signal Generator MSPG-925F 720p/216Gray
4) Video Signal Generator MSPG-925F 720p/216Gray
(Model:217, Pattern:78)
-> Only when internal pattern is not available
-> Only when internal pattern is not available
• Color Analyzer Matrix should be calibrated using CS-1000
- 13 -
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0
00
FF
FF
FF
FF
FF
FF
00
1E
6D
01
00
01
01
01
01
10
00
11
01
03
80
73
41
96
0A
CF
74
A3
57
4C
B0
23
20
09
48
4C
AF
CF
00
31
40
45
40
61
40
81
80
A9
40
30
01
01
01
01
01
01
66
21
50
B0
51
00
1B
30
40
70
40
36
00
C4
8E
21
00
00
1E
02
3A
80
18
71
38
2D
40
50
58
2C
45
00
C4
8E
21
00
00
1E
00
00
00
FD
00
30
60
58
1F
64
11
00
0A
20
20
20
20
20
20
00
00
00
FC
70
00
4C
47
20
54
56
0A
20
20
20
20
20
20
20
01
8A
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0
02
03
18
F1
47
84
05
03
02
20
22
10
23
15
07
50
10
67
03
0C
00
40
00
B8
2D
01
1D
80
18
71
1C
16
20
20
58
2C
25
00
C4
8E
21
00
00
9E
01
1D
00
72
51
D0
30
1E
20
62
28
55
00
C4
8E
21
00
00
1E
8C
0A
D0
8A
40
20
E0
2D
10
10
3E
96
00
C4
8E
21
00
00
18
8C
0A
50
D0
8A
20
E0
2D
10
10
3E
96
00
13
8E
21
00
00
18
60
26
36
80
A0
70
38
1F
40
30
20
25
00
C4
8E
21
00
70
00
1A
00
00
00
00
00
00
00
00
00
00
00
00
00
F7
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0
00
FF
FF
FF
FF
FF
FF
00
1E
6D
01
00
01
01
01
01
10
00
11
01
03
18
73
41
96
0A
CF
74
A3
57
4C
B0
23
20
09
48
4C
AF
CF
00
31
40
45
40
61
40
81
80
A9
40
30
01
01
01
01
01
01
66
21
50
B0
51
00
1B
30
40
70
40
36
00
C4
8E
21
00
00
1A
02
3A
80
18
71
38
2D
40
50
58
2C
45
00
C4
8E
21
00
00
1E
00
00
00
FD
00
30
60
58
1F
64
11
00
0A
20
20
20
20
20
20
00
00
00
FC
70
00
4C
47
20
54
56
0A
20
20
20
20
20
20
20
01
F6
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0
02
03
04
00
0E
1F
00
80
51
00
1E
30
40
80
37
00
10
C4
8E
21
00
00
1C
F1
27
00
A0
51
00
25
30
50
80
20
37
00
C4
8E
21
00
00
1C
26
36
80
A0
70
38
1F
40
30
30
20
25
00
C4
8E
21
00
00
0A
00
00
00
00
00
00
40
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
50
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
60
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
70
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
BC
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0
02
03
18
F1
47
84
05
03
02
20
22
10
23
15
07
50
10
67
03
0C
00
20
00
B8
2D
01
1D
80
18
71
1C
16
20
20
58
2C
25
00
C4
8E
21
00
00
9E
01
1D
00
72
51
D0
30
1E
20
62
28
55
00
C4
8E
21
00
00
1E
8C
0A
D0
8A
40
20
E0
2D
10
10
3E
96
00
C4
8E
21
00
00
18
8C
0A
50
D0
8A
20
E0
2D
10
10
3E
96
00
13
8E
21
00
00
18
60
26
36
80
A0
70
38
1F
40
30
20
25
00
C4
8E
21
00
70
00
1A
00
00
00
00
00
00
00
00
00
00
00
00
00
17
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0
00
FF
FF
FF
FF
FF
FF
00
1E
6D
01
00
01
01
01
01
10
00
11
01
03
80
73
41
96
0A
CF
74
A3
57
4C
B0
23
20
09
48
4C
AF
CF
00
31
40
45
40
61
40
81
80
A9
40
30
01
01
01
01
01
01
66
21
50
B0
51
00
1B
30
40
70
40
36
00
C4
8E
21
00
00
1E
02
3A
80
18
71
38
2D
40
50
58
2C
45
00
C4
8E
21
00
00
1E
00
00
00
FD
00
30
60
58
1F
64
11
00
0A
20
20
20
20
20
20
00
00
00
FC
70
00
4C
47
20
54
56
0A
20
20
20
20
20
20
20
01
8A
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0
02
03
18
F1
47
84
05
03
02
20
22
10
23
15
07
50
10
67
03
0C
00
30
00
B8
2D
01
1D
80
18
71
1C
16
20
20
58
2C
25
00
C4
8E
21
00
00
9E
01
1D
00
72
51
D0
30
1E
20
62
28
55
00
C4
8E
21
00
00
1E
8C
0A
D0
8A
40
20
E0
2D
10
10
3E
96
00
C4
8E
21
00
00
18
8C
0A
50
D0
8A
20
E0
2D
10
10
3E
96
00
13
8E
21
00
00
18
60
26
36
80
A0
70
38
1F
40
30
20
25
00
C4
8E
21
00
70
00
1A
00
00
00
00
00
00
00
00
00
00
00
00
00
07
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0
00
FF
FF
FF
FF
FF
FF
00
1E
6D
01
00
01
01
01
01
10
00
11
01
03
80
73
41
96
0A
CF
74
A3
57
4C
B0
23
20
09
48
4C
AF
CF
00
31
40
45
40
61
40
81
80
A9
40
30
01
01
01
01
01
01
66
21
50
B0
51
00
1B
30
40
70
40
36
00
C4
8E
21
00
00
1E
02
3A
80
18
71
38
2D
40
50
58
2C
45
00
C4
8E
21
00
00
1E
00
00
00
FD
00
30
60
58
1F
64
11
00
0A
20
20
20
20
20
20
00
00
00
FC
70
00
4C
47
20
54
56
0A
20
20
20
20
20
20
20
01
8A
5.3.3. Equipment connection map
5.3.4. Adjustment Command (Protocol)
• Protocol
<Command Format>
- LEN: Number of Data Byte to be send
- CMD: Command
- VAL: FOS Data
- CS: Checksum of sent Data
- A: Acknowledge
Ex) [Send: JA_00_DD] / [Ack: A_00_okDDX]
- CMD: Command
- VAL: FOS Data
- CS: Checksum of sent Data
- A: Acknowledge
Ex) [Send: JA_00_DD] / [Ack: A_00_okDDX]
• RS-232C Command used during auto-adj.
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. complete
*(wb 00 20(Start), wb 00 2f(End)) -> Off-set adj.
wb 00 ff -> End white balance auto-adj.
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.
• Adj. Map
5.3.5. Adj. method
(1) Auto adj. method
1) Set TV in adj. mode using POWER On Key
2) Zero calibrate probe then place it on the center of the
2) Zero calibrate probe then place it on the center of the
Display
3) Connect Cable(RS-232C)
4) Select mode in adj. Program and begin adj.
5) When adj. is complete (OK Sign), check adj. status
4) Select mode in adj. Program and begin adj.
5) When adj. is complete (OK Sign), check adj. status
per mode. (Warm, Medium, Cool)
6) Remove probe and RS-232C cable to complete adj.
• Adj. must begin w/ command “wb 00 00”, and end
w/“wb 00 ff”and adj. offset if needed.
(2) Manual adj. method
1) Set TV in adj. mode using POWER On Key
2i) Press ADJ key -> EZ adjust using adj. R/C
3) Using CH +/- KEY, select 7.TEST PATTERN then
2i) Press ADJ key -> EZ adjust using adj. R/C
3) Using CH +/- KEY, select 7.TEST PATTERN then
press Enter to place in HEAT RUN mode and wait for
5 minutes.
5 minutes.
4) Zero calibrate the probe of Color Analyzer, then place
it on the center of LCD module within 10 cm of the
surface.
surface.
5) Press ADJ key -> 6. White-Balance then press the
cursor to the right (KEY
G
)
(When
G
is pressed Full White internal pattern will
be displayed)
6) One of R Gain / G Gain / B Gain should be fixed at
192, and the rest will be lowered to meet the desired
value.
value.
7) Adj. is performed in COOL, MEDIUM, WARM 3
modes of color temperature
• If internal pattern is not available, use RF input(Full
white 216 gray)
In EZ Adj. menu 6.White Balance, you can select one
of 2 options: Test pattern ON, Test pattern OFF.
Default is “ON” By selecting “OFF”, you can adjust
using RF signal.
of 2 options: Test pattern ON, Test pattern OFF.
Default is “ON” By selecting “OFF”, you can adjust
using RF signal.
* Adj. condition and cautionary items
1) Lighting condition in surrounding area
Surrounding lighting should be lower than 10 lux.
Try to isolate adj. area into dark surrounding.
Try to isolate adj. area into dark surrounding.
2) Probe location
- Color Analyzer (CA-210) probe should be within
10cm and perpendicular of the module surface (80°~
100°)
100°)
- B/L on should be checked using no signal or Full
white Pattern
- 14 -
Co lo r An alyzer
Co m p ut er
Pat t ern Gen erat o r
RS -232C
RS -232C
RS -232C
Probe
Signal Source
*
If TV internal pattern is used, not needed
START 6E A 50 A
LEN A 03 A
CMD A 00 A
VAL A CS A
STOP
CMD
ID
DATA
Explanation
wb
00
00
Begin White Balance adj.
wb
00
ff
End White Balance adj.
(internal pattern disappears)
ITEM
Command
Data Range
Default
(Hex.)
(Decimal)
Cmd 1
Cmd 2
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
- 15 -
5.3.6. Reference (White Balance adj. coordinate and color
temperature)
• Luminance: Full white 216 Gray
• Standard color coordinate and temperature using CS-
• Standard color coordinate and temperature using CS-
1000
• Standard color coordinate and temperature using CA-
210(CH 09)
5.4. Manual V-Com adj. Method
* V-Com needs to be adjusted.(Default value is “450”)
1) Set TV in adj. mode using POWER On Key
2) Press ADJ key ‡ EZ adjust using adj. R/C
3) Using CH + / - KEY, select “10.V-Com”
4) Store the optimized default value “440” if there is not flicker
on the picture.
5) But is there flicker on the picture, Adjust V-Com using VOL
1) Set TV in adj. mode using POWER On Key
2) Press ADJ key ‡ EZ adjust using adj. R/C
3) Using CH + / - KEY, select “10.V-Com”
4) Store the optimized default value “440” if there is not flicker
on the picture.
5) But is there flicker on the picture, Adjust V-Com using VOL
+/- KEY
6) Stop adjusting V-Com if green pattern doesn’t show flicker.
and then stored current value and exit.
5.5 Option selection per country
(1) Overview
- Option selection is only done for models in Non-USA
- Applied model: LA92G Chassis applied None USA
Model(Canada, Mexico)
(2) Method
1) Press ADJ key on the Adj. R/C, then select Country
Group Menu
2) Depending on destination, select KR or US, then on the
lower option, select US, CA, MX. Selection is done using
+, - KEY
+, - KEY
5.6. EYE-Q function check
Step 1) Turn on TV
Step 2) Press EYE key of Adj. R/C
Step 3) Cover the Eye Q II sensor on the front of the using
Step 2) Press EYE key of Adj. R/C
Step 3) Cover the Eye Q II sensor on the front of the using
your hand and wait for 6 seconds
Step 4) Confirm that R/G/B value is lower than 10 of the “Raw
Data (R: G: B: )”.
If after 6 seconds, R/G/B value is not lower than 10,
replace Eye Q II sensor
replace Eye Q II sensor
Step 5) Remove your hand from the Eye Q II sensor and wait
for 6 seconds
Step 6) Confirm that “B. Light(xxx)” value increases from 0.
If change is not seen, replace Eye Q II sensor
5.7. Ship-out (Default) mode check (Instop)
• After final inspection, press In-Stop key of the Adjustment
R/C and check that the unit goes to Stand-by mode.
• After final inspection, Mechanical S/W(AC S/W) to the “on”
position.
6.1 Method
- Check that Power Cord is fully inserted to the set
(If loose, re-insert)
- Unit w/ fully inserted power cord and A/V arrives to the
auto-check process.
- Connect D-terminal AV JACK TESTER
- Auto CONTROLLER(GWS103-4) ON
- Perform GND TEST
- If NG, Buzzer will sound to inform the operator
- If OK, changeover to I/P check automatically
- Auto CONTROLLER(GWS103-4) ON
- Perform GND TEST
- If NG, Buzzer will sound to inform the operator
- If OK, changeover to I/P check automatically
(Remove CORD,A/V from AV Jack Box)
- Perform I/P test
- If NG, Buzzer will sound to inform the operator
- If OK, Good lamp will lit up and the stopper will allow the
- If NG, Buzzer will sound to inform the operator
- If OK, Good lamp will lit up and the stopper will allow the
pallet to move on to next process.
Coordinate
Mode
x y
Temp uv∆
Cool 0.276 0.283 11000K 0.0000
Medium 0.285 0.293
9300K
0.0000
Warm 0.313 0.329
6500K 0.0000
Coordinate
Mode
x y
Temp uv∆
Cool 0.276±0.002 0.283±0.002 11000K 0.0000
Medium 0.285±0.002 0.293±0.002
9300K
0.0000
Warm 0.313±0.002 0.329±0.002 6500K 0.0000
EZ ADJUST
0. Tool Option1
1. Tool Option2
2. Tool Option3
3. Tool Option4
4. Country Group
5. ADC Calibration
6. White Balance
7. Test pattern
1. Tool Option2
2. Tool Option3
3. Tool Option4
4. Country Group
5. ADC Calibration
6. White Balance
7. Test pattern
8. EDID D/L
9. Sub B/C
9. Sub B/C
10. V-Com
11. P-Gamma
V-Com
V-COM
445
Store
V-Com
V-COM
443
Store
<step 2>
<step 5>
<step 6>
<step 3>
<step 4>
6.2. Checkpoint
(1) TEST voltage
- GND: 1.5KV/min at 100mA
- Signal: 3KV/min at 100mA
- Signal: 3KV/min at 100mA
(2) Test time: 1 second
(3) Test point
(3) Test point
NEUTRAL
(4) LEAKAGE CURRENT: At 0.5mArms
7. USB S/W Download (option)
7.1. Overview
• USB download allows fast SW upgrade in SVC areas or
during Board-level production
7.2. Download Method
1) After set on, confirm that image is displayed
2) Insert USB memory stick that contains the SW and after
2) Insert USB memory stick that contains the SW and after
few seconds similar image to the picture below will appear
3) In [Current TV Software Version Information] confirm
current version, and in [New Found TV Software Version
Information] confirm to-be version then press Enter by
selecting Start
Information] confirm to-be version then press Enter by
selecting Start
4) Progress bar will appear as below and after completion, the
set will reset (if the process does not advance to the picture
below, reset the unit and repeat the steps)
below, reset the unit and repeat the steps)
5) After download is complete, remove USB memory stick
6) By pressing In-Start on the adj. R/C, check the version
6) By pressing In-Start on the adj. R/C, check the version
- 16 -
TV Software Upgrade
INFORMATION
MODEL
Current ver.
Update ver.
LU-FHD 128
Ver. 3.00
Ver. 3.01
47LH40-UA-v0301.epk
START
CANCEL
Press arrow key to move to the Start and....
TV Software Upgrade
Do not unplug until restart automatically
UPGRADING....
25%
TV Software Upgrade
Do not unplug until restart automatically
UPGRADING....
COMPLETE
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