LG 55LV770S (CHASSIS:LD12D) Service Manual ▷ View online
- 9 -
3.3. LAN Inspection
(1) Equipment & Condition
A
Each other connection to LAN Port of IP Hub and Jig
(2) LAN inspection solution
A
LAN Port connection with PCB
A
Network setting at MENU Mode of TV
A
setting automatic IP
A
Setting state confirmation
-> If automatic setting is finished, you confirm IP and
MAC Address.
3.4. Widevine Key Inspection
Widevine key Inspection
- Confirm key input Data at the “IN START” MENU Mode.
- Confirm key input Data at the “IN START” MENU Mode.
3.5. LAN PORT INSPECTION(PING TEST)
Connect SET -> LAN port == PC -> LAN Port
(1) Equipment setting
1) Play the LAN Port Test PROGRAM.
2) Input IP set up for an inspection to Test Program.
2) Input IP set up for an inspection to Test Program.
*IP Number : 12.12.2.2
(2) LAN PORT inspection (PING TEST)
1) Play the LAN Port Test Program.
2) Connect each other LAN Port Jack.
3) Play Test (F9) button and confirm OK Message.
4) Remove LAN cable.
2) Connect each other LAN Port Jack.
3) Play Test (F9) button and confirm OK Message.
4) Remove LAN cable.
3.6. Model name & Serial number Download
(1) Model name & Serial number D/L
A
Press “Power on” key of service remote control.
(Baud rate : 115200 bps)
A
Connect RS232 Signal Cable to RS-232 Jack.
A
Write Serial number by use RS-232.
A
Must check the serial number at Instart menu.
(2) Method & notice
A. Serial number D/L is using of scan equipment.
B. Setting of scan equipment operated by Manufacturing
B. Setting of scan equipment operated by Manufacturing
Technology Group.
C. Serial number D/L must be conformed when it is
produced in production line, because serial number D/L
is mandatory by D-book 4.0.
is mandatory by D-book 4.0.
* Manual Download (Model Name and Serial Number)
If the TV set is downloaded by OTA or service man,
sometimes model name or serial number is initialized.(Not
always)
There is impossible to download by bar code scan, so It
need Manual download.
a. Press the ‘instart’ key of ADJ remote control.
b. Go to the menu ‘5.Model Number D/L’ like below photo.
c. Input the Factory model name(ex 42LW950-ZA) or Serial
sometimes model name or serial number is initialized.(Not
always)
There is impossible to download by bar code scan, so It
need Manual download.
a. Press the ‘instart’ key of ADJ remote control.
b. Go to the menu ‘5.Model Number D/L’ like below photo.
c. Input the Factory model name(ex 42LW950-ZA) or Serial
number like photo.
d. Check the model name Instart menu. -> Factory name
displayed. (ex 42LW750S-ZA)
e. Check the Diagnostics. (DTV country only) -> Buyer
model displayed. (ex 42LW750S-ZA)
SET
PC
- 10 -
3.7. CI+ Key checking method
Check whether the key was downloaded or not at ‘In Start’
menu. (Refer to below.)
menu. (Refer to below.)
=> Check the Download to CI+ key value in LGset.
3.7.1. Check the method of CI+ Key value.
(1) Check the method on Instart menu.
(2) Check the method of RS232C Command.
(2) Check the method of RS232C Command.
1) Into the main assembly mode (RS232 : aa 00 00)
2) Check the key download for transmitted command.
(RS232 : ci 00 10)
3) Result value
- Normally status for download : OKx
- Abnormally status for download : NGx
- Abnormally status for download : NGx
3.7.2. Check the method of CI+ Key value (RS232)
1) Into the main assembly mode (RS232 : aa 00 00)
2) Check the method of CI+ key by command (RS232 : ci
00 20)
3) Result value
i 01 OK 1d1852d21c1ed5dcx
3.8. WIFI MAC ADDRESS CHECK
(1) Using RS232
(2) Check the menu on in-start
4. Manual Adjustment
4.1. ADC Adjustment
ADC adjustment is needed because of OTP(Auto ADC adjustment)
4.2. EDID(The Extended Display Identification
Data)/DDC(Display Data Channel) download
(1) Overview
It is a VESA regulation. A PC or a MNT will display an
optimal resolution through information sharing without any
necessity of user input. It is a realization of “Plug and Play”.
optimal resolution through information sharing without any
necessity of user input. It is a realization of “Plug and Play”.
(2) Equipment
- Since embedded EDID data is used, EDID download JIG,
HDMI cable and D-sub cable are not need.
- Adjust remote control
(3) Download method
1) Press ADJ key on the Adjustment remote control, then
select “12.EDID D/L”, By pressing Enter key, enter EDID
D/L menu.
D/L menu.
2) Select [Start] button by pressing Enter key, HDMI1/
HDMI2/ HDMI3/ HDMI4/ RGB are Writing and display
OK or NG.
OK or NG.
(4) EDID DATA
A
HDMI
A
RGB
CMD 1
CMD 2
Data 0
A
A
0
0
CMD 1
CMD 2
Data 0
C
I
1
0
CMD 1
CMD 2
Data 0
A
A
0
0
CMD 1
CMD 2
Data 0
C
I
2
0
CI+ key Value
H-freq(kHz)
V-freq.(Hz)
Transmission
[A][I][ ][Set ID][ ][20][Cr]
[O][K][X] or [NG]
0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0A 0x0B 0x0C 0x0D 0x0E 0x0F
0x00
00
FF
FF
FF
FF
FF
FF
00
1E
6D
ⓐ
ⓑ
0x01
ⓒ
01
03
80
10
09
78
0A
EE
91
A3
54
4C
99
26
0x02
0F
50
54
A1
08
00
71
40
81
C0
81
0
81
80
95
0
0x03
90
40
A9
C0
B3
00
02
3A
80
18
71
38
2D
40
58
2C
0x04
45
00
A0
5A
00
00
00
1E
66
21
50
B0
51
00
1B
30
0x05
40
70
36
00
A0
5A
00
00
00
1E
00
00
00
FD
00
39
0x06
3F
1F
52
10
00
0A
20
20
20
20
20
20
ⓓ
0x07
ⓓ
01
ⓔ1
0x00
02
03
37
F1
4E
10
1F
84
13
05
14
03
02
12
20
21
0x01
22
15
01
26
15
07
50
09
57
07
ⓕ
0x02
ⓕ
0x03
ⓕ
E3
05
03
01
01
1D
80
18
71
1C
16
20
58
0x04 2C
25
00
A0
5A
00
00
00
9E
01
1D
00
80
51
D0
1A
0x05
20
6E
88
55
00
A0
5A
00
00
00
1A
02
3A
80
18
71
0x06
38
2D
40
58
2C
45
00
A0
5A
00
00
00
1E
00
00
00
0x07
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
ⓔ2
0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0A 0x0B 0x0C 0x0D 0x0E 0x0F
0x00
0
FF
FF
FF
FF
FF
FF
0
1E
6D
ⓐ
ⓑ
0x01
ⓒ
01
03
68
10
09
78
0A
EE
91
A3
54
4C
99
26
0x02
0F
50
54
A1
08
00
71
40
81
C0
81
00
81
80
95
00
0x03
90
40
A9
C0
B3
00
02
3A
80
18
71
38
2D
40
58
2C
0x04
45
00
A0
5A
00
00
00
1E
66
21
50
B0
51
00
1B
30
0x05
40
70
36
00
A0
5A
00
00
00
1E
00
00
00
FD
00
3A
0x06 3E
1E
53
10
00
0A
20
20
20
20
20
20
ⓓ
0x07
ⓓ
0
ⓔ3
- 11 -
A
Reference
- HDMI1 ~ HDMI4 / RGB
- In the data of EDID, bellows may be different by S/W or
- In the data of EDID, bellows may be different by S/W or
Input mode.
ⓐ Product ID
ⓑ Serial No. : Controlled on product line
ⓒ Month, Year: Controlled on production line:
ex) Monthly : ‘01’ -> ‘01’
Year : ‘2010’ -> ‘14’
ⓓ Model Name(Hex): LGTV
ⓔ Checksum: Changeable by total EDID data.
ⓕ Vendor Specific(HDMI)
4.3. White Balance Adjustment
4.3.1 Overview
(1) W/B adj. Objective & How-it-works
(2) Objective: To reduce each Panel’s W/B deviation
(3) How-it-works : When R/G/B gain in the OSD is at 192, it
(2) Objective: To reduce each Panel’s W/B deviation
(3) 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.
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.
(4) Adj. condition : normal temperature
1) Surrounding Temperature : 25 ºC ± 5 ºC
2) Warm-up time: About 5 Min
3) Surrounding Humidity : 20 % ~ 80 %
2) Warm-up time: About 5 Min
3) Surrounding Humidity : 20 % ~ 80 %
4.3.2 Equipment
1) Color Analyzer: CA-210 (LED Module : CH 14)
2) Adj. Computer(During auto adj., RS-232C protocol is needed)
3) Adjust Remote control
4) Video Signal Generator MSPG-925F 720p/216-Gray
2) Adj. Computer(During auto adj., RS-232C protocol is needed)
3) Adjust Remote control
4) Video Signal Generator MSPG-925F 720p/216-Gray
(Model:204, Pattern:80IRE)
-> Only when internal pattern is not available
A
Color Analyzer Matrix should be calibrated using CS-1000
4.3.3. Equipment connection MAP
4.3.4. Adj. Command (Protocol)
<Command Format>
- LEN: Number of Data Byte to be sent
- CMD: Command
- VAL: FOS Data value
- CS: Checksum of sent data
- A: Acknowledge
Ex) [Send: JA_00_DD] / [Ack: A_00_okDDX]
- CMD: Command
- VAL: FOS Data value
- CS: Checksum of sent data
- A: Acknowledge
Ex) [Send: JA_00_DD] / [Ack: A_00_okDDX]
A
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. completed
ja 00 ff -> Adj. data
jb 00 c0
...
...
wb 00 1f -> Gain adj. completed
*(wb 00 20(Start), wb 00 2f(completed)) -> Off-set adj.
wb 00 ff -> End white balance auto-adj.
A
Adj. Map
Model Name
HEX
EDID Table
DDC Function
ALL
0001
0100
Analog
0001
0100
Digital
MODEL
MODEL NAME(HEX)
all
00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20
INPUT
ⓔ1
ⓔ2
ⓔ3
HDMI1
7F
CB
X
HDMI2
7F
BB
X
HDMI3
7F
AB
X
HDMI4
7F
9B
X
RGB
X
X
98
INPUT
MODEL NAME(HEX)
HDMI1
78 03 0C 00 10 00 B8 2D 20 C0 0E 01 40 0A 3C 08 10 18 10 98 10 58 10 38 10
HDMI2
78 03 0C 00 20 00 B8 2D 20 C0 0E 01 40 0A 3C 08 10 18 10 98 10 58 10 38 10
HDMI3
78 03 0C 00 30 00 B8 2D 20 C0 0E 01 40 0A 3C 08 10 18 10 98 10 58 10 38 10
HDMI4
78 03 0C 00 40 00 B8 2D 20 C0 0E 01 40 0A 3C 08 10 18 10 98 10 58 10 38 10
HDMI5
78 03 0C 00 50 00 B8 2D 20 C0 0E 01 40 0A 3C 08 10 18 10 98 10 58 10 38 10
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
LEN
CMD
VAL
CS
RS-232C COMMAND
Explanation
[CMD
ID
DATA]
wb
00
00
Begin White Balance adj.
wb
00
10
Gain adj.(internal white pattern)
wb
00
1f
Gain adj. completed
wb
00
20
Offset adj.(internal white pattern)
wb
00
2f
Offset adj. completed
wb
00
ff
ITEM
Command
Data Range(Hex.) Default(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
- 12 -
4.3.5. Adjustment method
(1) Auto adjustment 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 adjustment.
5) When adjustment is complete (OK Sign), check adj.
4) Select mode in adj. Program and begin adjustment.
5) When adjustment is complete (OK Sign), check adj.
status pre mode.(Warm, Medium, Cool)
6) Remove probe and RS-232C cable to complete adjustment.
A
W/B Adj. must begin as start command “wb 00 00” , and
finish as end command “wb 00 ff”, and Adj. offset if need.
finish as end command “wb 00 ff”, and Adj. offset if need.
(2) Manual adjustment method
1) Set TV in Adjustment mode using POWER ON.
2) Zero Calibrate the probe of Color Analyzer, then place it on
2) Zero Calibrate the probe of Color Analyzer, then place it on
the center of LCD module within 10 cm of the surface.
3) Press ADJ key -> EZ adjust using Adjustment remote
control -> 7. White-Balance then press the cursor to the
right(
right(
G
) key.
(When key(
G
) is pressed 216 Gray internal pattern will
be displayed.)
4) One of R Gain / G Gain / B Gain should be fixed at 192,
and the rest will be lowered to meet the desired value.
5) Adj. is performed in COOL, MEDIUM, WARM 3 modes
of color temperature.
A
If internal pattern is not available, use RF input. In EZ
Adj. menu 7.White Balance, you can select one of 2
Test-pattern: ON, OFF. Default is inner(ON). By
selecting OFF, you can adjust using RF signal in 216
Gray pattern.
Adj. menu 7.White Balance, you can select one of 2
Test-pattern: ON, OFF. Default is inner(ON). By
selecting OFF, you can adjust using RF signal in 216
Gray pattern.
A
Adj. condition and cautionary items
1) Lighting condition in surrounding area
Surrounding lighting should be lower 10 lux. Try to
isolate adj. area into dark surrounding.
isolate adj. area into dark surrounding.
2) Probe location : Color Analyzer(CA-210) probe should
be within 10 cm and perpendicular of the module
surface (80° ~ 100°)
surface (80° ~ 100°)
3) Aging time
- After Aging Start, Keep the Power ON status during 5
Minutes.
- In case of LCD, Back-light on should be checked
using no signal or Full-white pattern.
4.3.6. Reference(White Balance Adj. coordinate and
temperature)
A
Luminance : 204 Gray
A
Standard color coordinate and temperature using CS-1000
(over 26 inch)
(over 26 inch)
A
Standard color coordinate and temperature using CA-210
(CH 14)
(CH 14)
4.3.7. ALELF & Edge LED White balance table
A
Edge LED module change color coordinate because of
aging time.
aging time.
A
Apply under the color coordinate table, for compensated
aging time.
aging time.
[ALELF]
4.4. Wireless function check
Step 1) Connect set and Dongle of Wireless to Cable of HDMI
& TTA 20Pin
Step 2) At OSD of SET, check the message like Fig.3
Step 3) Detach Cable of Wireless Dongle
Step 3) Detach Cable of Wireless Dongle
Mode
Color Coordination
Temp
∆UV
x
y
COOL
0.269
0.273
13000 K
0.0000
MEDIUM
0.285
0.293
9300 K
0.0000
WARM
0.313
0.329
6500 K
0.0000
Mode
Color Coordination
Temp
∆UV
x
y
COOL
0.269 ± 0.002
0.273 ± 0.002 13000 K
0.0000
MEDIUM
0.285 ± 0.002
0.293 ± 0.002
9300 K
0.0000
WARM
0.313 ± 0.002
0.329 ± 0.002
6500 K
0.0000
GP3
Aging Time
Cool
Medium
Warm
(Min.)
X
Y
X
Y
X
Y
269
273
285
293
313
329
1
0-2
282
294
298
314
322
343
2
3-5
281
292
297
312
321
341
3
6-9
280
291
296
311
320
340
4
10-19
279
289
295
309
319
338
5
20-35
277
284
293
304
317
333
6
36-49
274
279
290
299
314
328
7
50-79
271
277
287
297
311
326
8
80-149
270
274
286
294
310
323
9
Over 150
269
273
285
293
309
322
Fi g . 1
< Do ng le>
Fig . 3 Connect the Dongle
( Do ng le Co n n ec t io n Di s p lay)
Fi g . 2
< Wireles s Read y Set >
Connect
Click on the first or last page to see other 55LV770S (CHASSIS:LD12D) service manuals if exist.