LG 42LD455B / 42LD455H (CHASSIS:LC01W) Service Manual ▷ View online
3) Show the message “Copying files from memory”.
4) Updating is starting.
5) After updating is complete, the TV will restart automatically.
6) If TV turns on, check your updated version and Tool option.
(refer to the next page about tool option)
* If downloading version is higher than your TV have, TV
* If downloading version is higher than your TV have, TV
can lost all channel data. In this case, you have to
channel recover. If all channel data is cleared, you didn’t
have a DTV/ATV test on production line.
channel recover. If all channel data is cleared, you didn’t
have a DTV/ATV test on production line.
* After downloading, have to adjust Tool Option again.
1) Enter ‘EZ ADJUST’ mode by pushing ‘ADJ’ key.
2) Select each ‘Tool Option(1 ~ 5)’ and push ‘OK’ or ‘
2) Select each ‘Tool Option(1 ~ 5)’ and push ‘OK’ or ‘
G
’ key.
3) Correct the number. (Each model has their number.)
4) Correction Tool option is completed.
4) Correction Tool option is completed.
3.1. ADC Process
* You need not connecting RGB(D-sub) cable. Because ADC
uses TV internal pattern.
• Enter ‘EZ ADJUST’ mode by pushing ‘ADJ’ key,
• Enter ‘ADC Calibration’ mode by pushing ‘OK’ or “
• Enter ‘ADC Calibration’ mode by pushing ‘OK’ or “
G
” key
after selecting “6. ADC Calibration”.
<Caution> Turn on Tv by pushing ‘POWER ON’ or ‘P-ONLY’ key.
* ADC Calibration Protocol (RS232)
Adjust Sequence
• aa 00 00 [Enter Adjust Mode]
• xb 00 40 [Component1 Input (480i)]
• ad 00 10 [Adjust 480i Comp1]
• xb 00 60 [RGB Input (1024*768)]
• ad 00 10 [Adjust 1024*768 RGB]
• aa 00 90 End Adjust mode
* Required equipment : factory Service Remote control
• aa 00 00 [Enter Adjust Mode]
• xb 00 40 [Component1 Input (480i)]
• ad 00 10 [Adjust 480i Comp1]
• xb 00 60 [RGB Input (1024*768)]
• ad 00 10 [Adjust 1024*768 RGB]
• aa 00 90 End Adjust mode
* Required equipment : factory Service Remote control
3.2. Function Check
(1) Check display and sound
- Check Input and Signal items.
1) TV
2) AV 1/2
3) COMPONENT1/2 (480i)
4) RGB (PC : 1024 x 768 @ 60hz)
5) HDMI 1/2/3
6) PC Audio In
2) AV 1/2
3) COMPONENT1/2 (480i)
4) RGB (PC : 1024 x 768 @ 60hz)
5) HDMI 1/2/3
6) PC Audio In
* Display and Sound check is executed by remote control.
- 9 -
Item CMD1 CMD2
Data0
Adjust
A
A
0
0 When transfer the ‘Mode In’,
‘Mode In’
Carry the command.
ADC Adjust
A
D
1
0 Automatically adjustment
(The use of a internal pattern)
ADC Calibration
ADC Comp 480i
NG
ADC Comp 1080p
NG
ADC RGB
NG
Start
Reset
EZ ADJUST
0. Tool Option1
1. Tool Option2
2. Tool Option3
3. Tool Option4
4. Tool Option5
5. Country Group
6. ADC Calibration
7. White Balance
8. 10 Point WB
9. Test Pattern
10. EDID D/L
11. Sub B/C
12. V-Com
13. P-Gamma
4. Total Assembly line process
4.1. Adjustment Preparation
· W/B Equipment condition
CA210 : CH 9, Test signal : Inner pattern (85IRE)
· Above 5 minutes H/run in the inner pattern. (Turn on TV by
pushing “POWER ON” or “P-ONLY” key)
* Connecting picture of the measuring instrument
(On Automatic control)
Inside Pattern is used when W/B is controlled. Connect to auto
controller or push Adjustment remote control POWER ON ->
Enter the mode of White-Balance, the pattern will come out.
Inside Pattern is used when W/B is controlled. Connect to auto
controller or push Adjustment remote control POWER ON ->
Enter the mode of White-Balance, the pattern will come out.
* Auto-control interface and directions
1) Adjust in the place where the influx of light like floodlight
around is blocked. (illumination is less than 10 lux).
2) Adhere closely the Color Analyzer (CA210) to the module
less than 10cm distance, keep it with the surface of the
Module and Color Analyzer’s Prove vertically.(80° ~ 100°).
Module and Color Analyzer’s Prove vertically.(80° ~ 100°).
3) Aging time
- After aging start, keep the power on (no suspension of
power supply) and heat-run over 15minutes.
- Using ‘no signal’ or ‘full white pattern’ or the others, check
the back light on.
• Auto adjustment Map(RS-232C)
** Caution **
Color Temperature : COOL, Medium, Warm.
One of R Gain/G Gain/ B Gain should be kept on 0xC0, and
adjust other two lower than C0.
(when R/G/B Gain are all C0, it is the FULL Dynamic Range
of Module)
One of R Gain/G Gain/ B Gain should be kept on 0xC0, and
adjust other two lower than C0.
(when R/G/B Gain are all C0, it is the FULL Dynamic Range
of Module)
* Manual W/B process using Adjustment remote control
• Enter ‘EZ ADJUST’ mode by pushing “ADJ” key,
• Enter White Balance by pushing “
• Enter White Balance by pushing “
G
” key at “6.White Balance”.
- After all adjustments, press “IN START” key and compare
Tool option value with its BOM, if it is correctly same then
unplug the AC cable.
unplug the AC cable.
If it is not same, then correct it same with BOM and unplug AC
cable.
For correct it to the model’s module from factory JIG model.
cable.
For correct it to the model’s module from factory JIG model.
- Push ‘IN STOP’ key after completing the function inspection.
4.2. DDC EDID Write (RGB 128Byte )
• Connect D-sub Signal Cable to D-sub Jack.
• Write EDID Data to EEPROM(24C02) by using DDC2B
• Write EDID Data to EEPROM(24C02) by using DDC2B
protocol.
• Check whether written EDID data is correct or not.
* For Service main Assembly, EDID have to be downloaded to
* For Service main Assembly, EDID have to be downloaded to
Insert Process in advance.
4.3. DDC EDID Write (HDMI 256Byte)
• Connect HDMI Signal Cable to HDMI Jack.
• Write EDID Data to EEPROM(24C02) by using DDC2B
• Write EDID Data to EEPROM(24C02) by using DDC2B
protocol.
• Check whether written EDID data is correct or not.
* For Service main Assembly, EDID have to be downloaded to
* For Service main Assembly, EDID have to be downloaded to
Insert Process in advance.
- 10 -
Cool 1,100
ºK
X=0.276(±0.002)
Y=0.283(±0.002)
Medium
9,300
ºK
X=0.285(±0.002)
Y=0.293(±0.002)
Warm
6,500
ºK
X=0.313(±0.002)
Y=0.329(±0.002)
Full White Pattern
COLOR
ANALYZER
TYPE: CA-210
ANALYZER
TYPE: CA-210
RS-232C Communication
CA-210
RS-232C COMMAND MIN
CENTER
MAX
[CMD ID DATA]
(DEFAULT)
Cool
Mid
Warm
Cool
Mid
Warm
R Gain
jg
Ja
jd
00
172
192
192
192
G Gain
jh
Jb
je
00
172
192
192
192
B Gain
ji
Jc
jf
00
192
192
172
192
R Cut
64
64
64
128
G Cut
64
64
64
128
B Cut
64
64
64
128
Index
Equipment -> Wireless unit
Wireless unit -> Set
CMD1 CMD2 Set ID Data CMD1 CMD2 CMD3 CMD4
Start
w
b
0
00
1F
04
00
00
Gain start
w
b
0
10
1F
04
00
10
Gain End
w
b
0
1F
1F
04
00
1F
Offset Start
w
b
0
20
1F
04
00
20
Offset End
w
b
0
2F
1F
04
00
2F
End
w
b
0
FF
1F
04
00
FF
White Balance
Color Temp.
Cool
R-Gain
172
G-Gain
172
B-Gain
192
R-Cut
64
G-Cut
64
B-Cut
64
Test-Pattern
Backlight
ON
100
Reset
To Set
EZ ADJUST
0. Tool Option1
1. Tool Option2
2. Tool Option3
3. Tool Option4
4. Tool Option5
5. Country Group
6. ADC Calibration
7. White Balance
8. 10 Point WB
9. Test Pattern
10. EDID D/L
11. Sub B/C
12. V-Com
13. P-Gamma
4.4. EDID DATA
1) All Data : HEXA Value
2) Changeable Data :
*: Serial No : Controlled / Data:01
**: Month : Controlled / Data:00
***: Year : Controlled
****: Check sum
2) Changeable Data :
*: Serial No : Controlled / Data:01
**: Month : Controlled / Data:00
***: Year : Controlled
****: Check sum
- Auto Download
• Enter ‘EZ ADJUST’ mode by pushing
‘ADJ’ key.
• Enter EDID D/L mode.
• Enter ‘START’ by pushing ‘OK’ key.
* Caution : Never connect HDMI & D-sub
• Enter ‘START’ by pushing ‘OK’ key.
* Caution : Never connect HDMI & D-sub
cable when auto download.
* EDID data and Model option download (RS232)
- Manual Download
* Caution
1) Use the proper signal cable for EDID Download
- Analog EDID : Pin3 exists
- Digital EDID : Pin3 exists
- Digital EDID : Pin3 exists
2) Never connect HDMI & D-sub Cable at the same time.
3) Use the proper cables below for EDID Writing.
4) Download HDMI1, HDMI2, HDMI3 separately because
3) Use the proper cables below for EDID Writing.
4) Download HDMI1, HDMI2, HDMI3 separately because
each data is different.
(1) RGB EDID data : 128 byte
(2) HDMI EDID data : 256 byte
* Detail EDID Options are below.
ⓐ Product ID
ⓑ Serial No: Controlled on production line.
ⓒ Week, Year:Fixed as S/W released day(same as MES data)
ex) Week : 0x02(2), Year 0x13(2009)
ⓓ Model Name(Hex):
ⓔ Checksum: Changeable by total EDID data.
ⓕ Vendor Specific(HDMI)
MODEL
RGB
HDMI1
HDMI2
HDMI3
Remark
FHD
0x1C
0xD7, 0x39 0xD7, 0x29
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
00
00
FF
FF
FF
FF
FF
FF
00
1E
6D
ⓐ
ⓑ
10
ⓒ
01
03
68
10
09
78
0A
EE
91
A3
54
4C
99
26
20
0F
50
54
A1
08
00
81
80
61
40
45
40
31
40
01
01
30
01
01
01
01
01
01
02
3A
80
18
71
38
2D
40
58
2C
40
45
00
A0
5A
00
00
00
1E
01
1D
00
72
51
D0
1E
20
50
6E
28
55
00
A0
5A
00
00
00
1E
00
00
00
FD
00
3A
60
3E
1E
53
10
00
0A
20
20
20
20
20
20
ⓓ
70
ⓓ
00
ⓔ
- 11 -
HDMI1
NG
HDMI2
NG
HDMI3
NG
RGB
NG
Start
Reset
EDID D/L
HDMI1
OK
HDMI2
OK
HDMI3
OK
RGB
OK
Start
Reset
EDID D/L
EZ ADJUST
0. Tool Option1
1. Tool Option2
2. Tool Option3
3. Tool Option4
4. Tool Option5
5. Country Group
6. ADC Calibration
7. White Balance
8. 10 Point WB
9. Test Pattern
10. EDID D/L
11. Sub B/C
12. V-Com
13. P-Gamma
MODEL
HEX
EDID Table
DDC Fuction
FHD
0001
01 00
Analog/Digital
MODEL
Model name(HX)
All Model
00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20
INPUT
MODEL NAME(HEX)
Remark
HDMI1
67 03 0C 00 10 00 B8 2D
HDMI2
67 03 0C 00 20 00 B8 2D
Item CMD1 CMD2 Data0
Download
A
A
0
0
When transfer the ‘Mode In’,
‘Mode In’
Carry the command.
Download
A E
00 10
Automatically
Download
(The use of a internal pattern)
D-sub to D-sub
DVI-D to HDMI or HDMI to HDMI
For HDMI EDID
For Analog EDID
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
00
00
FF
FF
FF
FF
FF
FF
00
1E
6D
ⓐ
ⓑ
10
ⓒ
01
03
80
10
09
78
0A
CF
74
A3
54
4C
99
26
20
0F
50
54
A1
08
00
81
80
61
40
45
40
31
40
01
01
30
01
01
01
01
01
01
02
3A
80
18
71
38
2D
40
58
2C
40
45
00
A0
5A
00
00
00
1E
01
1D
00
72
51
D0
1E
20
50
6E
28
55
00
A0
5A
00
00
00
1E
00
00
00
FD
00
3A
60
3E
1E
53
10
00
0A
20
20
20
20
20
20
ⓓ
70
ⓓ
01
ⓔ
80
02
03
20
F1
4E
10
1F
84
13
05
14
03
02
12
20
21
90
22
15
01
26
15
07
50
09
57
07
ⓕ
A0
ⓕ
E3
05
03
01
01
1D
80
18
71
1C
16
20
58
2C
B0
25
00
A0
5A
00
00
00
9E
01
1D
00
80
51
D0
0C
20
C0
40
80
35
00
A0
5A
00
00
00
1E
02
3A
80
18
71
38
D0
2D
40
58
2C
45
00
A0
5A
00
00
00
1E
66
21
50
B0
E0
51
00
1B
30
40
70
36
00
A0
5A
00
00
00
1E
00
00
F0
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
ⓔ
Item
Manufacturer ID
Version
Revision
Condition
GSM
Digital : 1
Digital : 3
Data(Hex)
1E6D
01
03
4.5. V-COM Adjust
(Only M+S models which use LGD module)
- Why need Vcom adjustment?
A
The Vcom (Common Voltage) is a Reference Voltage of
Liquid Crystal Driving.
Liquid Crystal Driving.
-> Liquid Crystal need for Polarity Change with every frame.
- Adjust sequence (Method 1)
· Push ‘PIP’ key.
· If there is no flicker at default value, turn down or turn up
· If there is no flicker at default value, turn down or turn up
until no flicker, push ‘OK’ key to store.
· Push ‘Exit’ key to exit.
- Adjust sequence (Method 2)
· Enter ‘EZ ADJUST’ mode by pushing “ADJ” key.
· Select and enter ‘12. V-Com’ mode.
· If there is no flicker at default value, turn down or turn up
· Select and enter ‘12. V-Com’ mode.
· If there is no flicker at default value, turn down or turn up
until no flicker, push ‘OK’ key to store.
· Push ‘Exit’ key to exit.
4.6. Outgoing condition Configuration
- Push ‘IN-STOP’ key, the in-stop processing will start.
If processing i complete, TV will turn off automatically.
(Must not AC power OFF during blinking)
(Must not AC power OFF during blinking)
Confirm whether is normal or not when between power
board's ac block and GND is impacted on 1.5kV(dc) or
2.2kV(dc) for one second.
board's ac block and GND is impacted on 1.5kV(dc) or
2.2kV(dc) for one second.
- 12 -
V-Com
V-Com
425
EZ ADJUST
0. Tool Option1
1. Tool Option2
2. Tool Option3
3. Tool Option4
4. Tool Option5
5. Country Group
6. ADC Calibration
7. White Balance
8. 10 Point WB
9. Test Pattern
10. EDID D/L
11. Sub B/C
12. V-Com
13. P-Gamma
Press ( ) to save.
Row Li ne
Column Line
C
LC
C
ST
Pane l
S
Y
S
T
E
M
Gat
e
Driv
e
IC
So urce D r i v e I C
Circuit Block
Ti m i n g
Co nt r o ll e r
Co nt r o ll e r
Po w e r
Blo ck
Blo ck
V
COM
Ga mma
Re f e r e nce V o ltage
Re f e r e nce V o ltage
Gamm a R eference
Volta ge
Volta ge
Da ta (R ,G,B ) & C ont ro l s ignal
Con t rol si gnal
Data (R ,G,B ) &
Con t rol si gnal
Con t rol si gnal
In
te
te
r
fa
c
e
TFT
Po w e r I n p u t
Power Input
Da t a I n p u t
Da t a I n p u t
V
COM
Liquid
Crys tal
Crys tal
V
COM
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