DOWNLOAD LG 32LG30 (CHASSIS:LA85D) Service Manual ↓ Size: 5.87 MB | Pages: 35 in PDF or view online for FREE

Model
32LG30 (CHASSIS:LA85D)
Pages
35
Size
5.87 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
32lg30-chassis-la85d.pdf
Date

LG 32LG30 (CHASSIS:LA85D) Service Manual ▷ View online

1. Application Object
These instructions are applied to all of the LCD TV, LA85D.
2. Notes
(1) Because this is not a hot chassis, it is not necessary to use
an isolation transformer. However, the use of isolation
transformer will help protect test equipment.
(2) Adjustments must be done in the correct order.
(3) The adjustments must be performed in the circumstance of
20±5°C of temperature and 65±10% of relative humidity if
there is no specific designation.
(4) The input voltage of the receiver be must kept 220V, 60Hz
when adjusting.
(5) The receiver must be operational for about 15 minutes
prior to the adjustments.  
(6) Perform preliminary operation after receiving 100% White
Pattern (06CH). (Or 3. White Pattern status of Ez-Adjust)
(7) White Pattern entry method
1) Enter into Ez-Adjust by pressing the ADJ key on the
adjustment R/C.
2) 100% FULL WHITE PATTERN appears if pressing the
OK (
A
) key after selecting the 3.WHITE PATTERN with
the CH + / - KEY.
* It is possible to heat run the set without a separate signal
generator in this mode.
Caution : Care must be taken as afterimage phenomena
may occur about the black level part of screen If leaving
pause image turned on for more than 20 minutes
(especially inner digital pattern (13 CH), Cross Hatch
Pattern (09CH) with significant black/white contrast).
3. ADC Adjustment
3-1. PC input ADC
(1) Auto RGB Gain/Offset Adjustment
1) Convert to PC in Input-source
I
2
C COMMAND:0xF4(SELECT INPUT) 0x00 0x60(RGB)
cf. 0x10(TV), 0x20(AV), 0x40(COMPONENT),
0x60(RGB), 0x90(HDMI)
2) Signal equipment displays
Output Voltage : 700 mVp-p
Impress Resolution XGA (1024x 768 @ 60Hz)
Model : 60   in Pattern Generator
Pattern : 29 in Pattern Generator (MSPG-925 Series)
[gray pattern that left & right is black and center is
white signal (Refer below picture)].
3) Adjust by commanding AUTO_COLOR_ADJUST (0xF1)
0x00 0x02 instruction.
(2) Confirmation
1) We confirm whether “0xB6” address of EEPROM
0xA2” is “0xAA” or not.
2) If  “0xB6(RGB)” address of EEPROM “0xB2” isn’t
0xAA”, we adjust once more.
3) We can confirm the ADC values from “0xB0~0xB5
(RGB)” addresses in a page “0xA2
* Manual ADC process using Service Remote control. After
enter Service Mode by pushing “ADJ” key, execute “Auto-
adjust” by pushing “
G
” key at “0. ADC CALIBRATION”.
3-2. COMPONENT input ADC
(1) Component Gain/Offset Adjustment
1) Convert to Component in Input-source
I
2
C command : 0xF4(Select input) 0x00 0x40(Component)
cf. 0x10(TV), 0x20(AV), 0x40(COMPONENT),
0x60(RGB), 0x90(HDMI)
2) Signal equipment displays
Impress Resolution  480i
MODEL : 209    
in Pattern Generator(480i Mode)
PATTERN : 08 in Pattern Generator(MSPG-925 Series)
3) Adjust by commanding AUTO_COLOR_ADJUST (0xF1)
0x00 0x02 instruction.
4) Signal equipment display
-Impress Resolution : 1080i
- MODEL: 223    in Pattern Generator(1080i Mode)
- PATTERN: 08  in Pattern generator(MAPG-925 series)
5) Adjust by commanding AUTO_COLOR ADJUST(0xF1)
0x00  0x02 instruction.
* Manual ADC process using Service Remote control. After
enter Service Mode by pushing “ADJ” key, execute “Auto-
adjust” by pushing “
G
” key at “0. ADC CALIBRATION”.
- 9 -
ADJUSTMENT INSTRUCTION
<Adjustment pattern (PC)>
EZ ADJUST
1. ADC ADJUST
2. SUB B/C ADJUST
3. W/B ADJUST                         
4. WHITE PATTERN        : OFF
5. 2HOUR OFF             : ON
6. OAD
7. UART DOWNLOAD
8. FACTORY MODE         : ON
9. DEBUG MODE           : OFF
0. ADC CALIBRATION 
: RGB
<Adjustment pattern (COMPONENT)>
EZ ADJUST
1. ADC ADJUST
2. SUB B/C ADJUST
3. W/B ADJUST                         
4. WHITE PATTERN        : OFF
5. 2HOUR OFF             : ON
6. OAD
7. UART DOWNLOAD
8. FACTORY MODE         : ON
9. DEBUG MODE           : OFF
0. ADC CALIBRATION  : COMPONENT
(2) Confirmation
1) We confirm whether “0xBF(480i)/0xC8(1080i)” address
of EEPROM “0xA2” is “0xAA” or not.
2) If “0xBF(480i)/0xC8(1080i)” address of EEPROM “0xA2”
isn’t “0xAA”, we adjust once more.
3) We can confirm the ADC values from “0xB ~0xBE(480i)/
0xC2~(1080i)” addresses in a page “0xA2”.
* Manual ADC Confirmation using Service Remocon. After
enter Service Mode by pushing “INSTART” key.
4EDID (The Extended Display 
Identification Data)/ DDC(Display
Data Channel) Download
4-1. Summary 
It is established in VESA, for communication between PC and
Monitor without order from user for building user condition. It
helps to make easily use realize "Plug and Play" function.
4-2. Required Test Equipment
1) PC (with S/W : EDID Data write & Read)
2) EDID DOWNLOAD JIG
3) HDMI Cable, D-Sub cable
4-3. Connection diagram(Setting of D/L device)
4-4. How to download
(1) Configure the download environment as shown at the
adjustment wiring diagram and turn on the PC.
(2) Execute the DDC program. (EDID Data Write & Read)
(3) Go  to  Model -> Open, and select the EDID data of the
desired model.
(4) Check the item to download from the <Test> item
1) HDMI & RGB: Check Digital & Analog
2) (Only)HDMI: Check Digital only
(5) Press ESC(Cancel Mode) -> F8(Auto Mode). (Set Auto
Detecting)
(6) Connect the desired signal cable to the set.
(7) Make sure that the popup "Proceed to write?" is displayed.
(8) Press the Enter key or the space key to download.
(9) After downloading, check the OK message and disconnect
the connected cable.
4-5. EDID DATA
* It is possible to download on only POWER ON MODE.
- HDMI-1 [C/S : 8A27]
EDID Block 0 table =
EDID Block 1 table =
- HDMI-2 [C/S : 8A17]
EDID Block 0 table =
EDID Block 1 table =
- 10 -
MODEL : 22LS4D_UA_UA/LPL_LM220WT7
S/W VER : 3.00.1
UTT : 6                    
ADC CAL.
RGB : OK
YPbPr(SD) : OK
YPbPr(HD) : OK
1. SYNC LEVEL
2. DTV SNR
3. SCREEN MUTE              
4. POWER OFF HISTORY
0. STEREO DETECT
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
10
00
B8
2D
01
1D
00
72
51
D0
1E
20
20
6E
28
55
00
C4
8E
21
00
00
1E
01
1D
80
18
71
1C
30
16
20
58
2C
25
00
C4
8E
21
00
00
9E
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
27
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
20
00
B8
2D
01
1D
00
72
51
D0
1E
20
20
6E
28
55
00
C4
8E
21
00
00
1E
01
1D
80
18
71
1C
30
16
20
58
2C
25
00
C4
8E
21
00
00
9E
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
- 11 -
- HDMI-3 [C/S : 8A07]
EDID Block 0 table =
EDID Block 1 table =
- RGB [C/S : F6BC]
EDID Block 0 table =
EDID Block 1 table =
5. White Balance
5-1. The Purpose and Principal of Color
Temperature Adjustment
(1) Purpose: to reduce the difference in color temperature
among modules
(2) Principal: A module is in full dynamic range when RGB
Gain on OSD is 192. To adjust the white balance without
causing full dynamic range and full data, fix one of RGB
Gains at 192 and control the other two by reducing them
from 192.
5-2. Required Equipment
(1) Color Analyzer : CA-210 (NCG : CH 9 / WCG : CH12)
(2) Automatic adjuster (with automatic adjustment necessity
and the RS-232C communication being possible)
(3) Remote control for adjustment
(4) Video Signal Generator MSPG-925F 720p, 216Gray
(Model : 217, Pattern 78) => Applied only when the inner
pattern cannot be used
* Use the Color Analyzer with the matrix calibrated by the CS-
1000
5-3. Adjustment command (Protocol)
(1) Protocol
<Command Format>
- LEN : Number of Data Byte
- CMD : Command
- VAL : Value of FOS Data
- CS : Checksum
- A : Acknowledge
Ex) [Send: JA_00_DD] / [Ack: A_00_okDDX}
(2) RS-232C Command(Automatic adjustment)
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
00
72
51
D0
1E
20
20
6E
28
55
00
C4
8E
21
00
00
1E
01
1D
80
18
71
1C
30
16
20
58
2C
25
00
C4
8E
21
00
00
9E
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
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
Co lo r Analyzer
 
Co m p ut er
 
Pat t ern  Generat o r
 
RS -232C 
RS -232C 
RS -232C 
Probe
Signal Source
Not used when the inner pattern of the TV set is used
Connection Diagram of Automatic Adjustment
RS-232C COMMAND
Meaning
[CMD    ID      DATA]
wb
00
00
White Balance adjustment start.
wb
00
10
Start of adjust gain (Inner white pattern)
wb
00
1f
End of gain adjust
wb
00
20
Start of offset adjust(Inner white pattern)
wb
00
2f
End of offset adjust
wb
00
ff
End of White Balance adjust(Inner pattern disappeared)
LEN
CMD
VAL
CS
Ex)  wb 00 00 : Start Auto-adjustment of white balance.
wb 00 10 : Start Gain Adjustment (Inner pattern) 
ja 00 ff : Adjustment data
jb 00 c0 : 


wb 00 1f : End of Gain adjustment
* (wb 00 20(start), wb 00 2f(end)) -> In the case of Off-
set adjustment
wb 00 ff : End of white balance adjustment
(3) Adjustment Map
5-4. Adjustment of White Balance
(Automatic Adjustment)
1) The adjustment condition should be set by the Power On
key.
2) Perform the zero calibration of the Color Analyzer and
place the probe close to the display center.
3) Connect the communication cable (RS-232C).
4) Select the desired model of the adjustment program and
perform the adjustment.
5) After the adjustment is ended (check the OK sign), check
the adjustment condition for each mode of the set.
(Warm, Medium, Cool)
6) Disconnect the probe and the communication cable to end
the adjustment.
* The adjustment should be started with "wb 00 00" and
ended with "wb 00 ff", and the offset should be adjusted
when necessary.
5-5. Manual white Balance
1) The adjustment condition should be set by the Power On
key.
2) Press the ADJ of the R/C to enter into ‘EZ-ADJUST’.
3) Select ‘10.TEST PATTERN’ with the CH +/- key and press
the Enter key for 30 minutes or longer to perform the heat
run.
4) Perform the zero calibration of the Color Analyzer and fix
the sensor with the 10cm or less distance at the center of
the LCD module surface when adjusting.
5) Press the ADJ of the R/C to select ‘7.White-Balance’ of the
Ez-Adjust and press the right arrow key(
G
) to enter into the
adjustment mode. (As soon as you press ‘
G
’, the screen is
entered into the full white inner pattern.)
6) Fix one of the R/G/B gains to 192 and decrease the
remaining two gains to adjust not to exceed 192.
7) The adjustment is done at three white balances of Cool,
Medium and Warm.
* The inner pattern is basically used, and if it is not possible,
the adjustment can be done by selecting the HDMI input.
NONE, INNER or HDMI can be selected by the bottom
option at the Ez Adjust Menu 7.White Balance menu and it is
set to INNER as default. If the adjustment cannot be done by
the inner pattern, select the HDMI to adjust.
* Adjustment environment and reference
1) Environment illuminance
Adjust it to 10 LUX or less at the place where the light
source such as lamp should be blocked at maximum.
2) Probe location
: Maintain the Color Analyzer (CA-210) close to the
module surface by 10cm or less and keep the probe of
the Color Analyzer perpendicular to the module
surface (80°~ 100°).
3) Aging time
- Keep the power on after the aging start (with no power
off) to perform the heat run for 15 minutes or longer.
- Make sure that the back light is turned on by using no
signal and the full white pattern or others.
5-6. Reference 
(1) Brightness: Full white 216 Gray 
(2) Standard color coordinate and white balance when using
the CS-1000
(3) Standard color coordinate and white balance when using
the CA-210 (CH 10)
- 12 -
ITEM
Command
Data Range
Default
(Hex.)
(Decimal)
Cmd 1
Cmd 2
Min
Max
Cool
R-Gain
j
g
00
C0
TBD
G-Gain
j
h
00
C0
TBD
B-Gain
j
i
00
C0
TBD
R-Cut
TBD
G-Cut
TBD
B-Cut
TBD
Medium
R-Gain
j
a
00
C0
TBD
G-Gain
j
b
00
C0
TBD
B-Gain
j
c
00
C0
TBD
R-Cut
TBD
G-Cut
TBD
B-Cut
TBD
Warm
R-Gain
j
d
00
C0
TBD
G-Gain
j
e
00
C0
TBD
B-Gain
j
f
00
C0
TBD
R-Cut
TBD
G-Cut
TBD
Mode
Color Coordination
Temp
∆UV
x
y
COOL
0.276
0.283
11000K
0.0000
MEDIUM
0.285
0.293
9300K
0.0000
WARM
0.313
0.329
6500K
0.0000
Mode
Color Coordination
Temp
∆UV
x
y
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
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