DOWNLOAD LG 55EM970V-ZA (CHASSIS:ED23E) Service Manual ↓ Size: 10.49 MB | Pages: 119 in PDF or view online for FREE

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# HDMI 4

EDID Block 0, Bytes 0-127 [00H-7FH] 

EDID Block 1, Bytes 128-255 [80H-FFH]

▪ W/B adj. Objective & How-it-works

(1) Objective: To reduce each Panel's W/B deviation

(2)  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. 

(3) Adjustment condition : normal temperature

1) Surrounding Temperature : 25 °C ± 5 °C

2) Warm-up time: About 5 Min

3) Surrounding Humidity : 20 % ~ 80 %

(1) Color Analyzer: CA-210 (LED Module : CH 14)

(2)  Adjustment Computer(During auto adj., RS-232C protocol 

is needed)

(3) Adjustment Remote control

(4)  Video Signal Generator MSPG-925F 720p/216-Gray

(Model: 217, Pattern: 78)

→ Only when internal pattern is not available

▪ Color Analyzer Matrix should be calibrated using CS-1000.

<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]

▪ RS-232C Command used during auto-adjustment.

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

    *(wb 00 20(Start), wb 00 2f(end)) → Off-set adj.

 

wb 00 ff   → End white balance auto-adj.

▪ Adj. Map

START 6E A 50 A LEN A 03 A CMD

A

00

A VAL A

CS STOP

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 01 00 01 01 01 01
10 01 16 01 03 80 A0 5A 78 0A EE 91 A3 54 4C 99 26
20 0F 50 54 A1 08 00 31 40 45 40 61 40 71 40 81 80
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 66 21 50 B0 51 00 1B 30
50 40 70 36 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 00 00 00 FC
70 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 43

0

1

2

3

4

5

6

7

8

9

A

B

C

D

E

F

00 02 03 37 F1 4E 10 9F 04 13 05 14 03 02 12 20 21
10 22 15 01 26 15 07 50 09 57 07 78 03 0C 00 40 00
20 B8 2D 20 C0 0E 01 4F 3F FC 08 10 18 10 06 10 16
30 10 28 10 E3 05 03 01 02 3A 80 18 71 38 2D 40 58
40 2C 45 00 A0 5A 00 00 00 1E 01 1D 80 18 71 1C 16
50 20 58 2C 25 00 A0 5A 00 00 00 9E 01 1D 00 72 51
60 D0 1E 20 6E 28 55 00 A0 5A 00 00 00 1E 00 00 00
70 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 E1

Color Analyzer

 

Computer 

Pattern Generator

 

RS-232C 

RS-232C 

RS-232C 

Probe

Signal Source

* If TV internal pattern is used, not needed

RS-232C COMMAND

[CMD 

ID 

DATA]

Explantion

wb

00

00

Begin White Balance adjustment

wb

00

10

Gain adjustment(internal white pattern)

wb

00

1f

Gain adjustment completed

wb

00

20

Offset adjustment(internal white pattern)

wb

00

2f

Offset adjustment completed

wb

00

ff

End White Balance adjustment

(internal pattern disappears )

Adj. item

Command

(lower caseASCII)

Data Range

(Hex.)

Default

(Decimal)

CMD1

CMD2

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

- 18 -

(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 

Display.

3) Connect Cable.(RS-232C to USB)

4) Select mode in adj. Program and begin adj.

5)  When adj. is complete (OK Sign), check adj. status pre 

mode. (Warm, Medium, Cool)

6) Remove probe and RS-232C cable to complete adj.

▪  W/B Adj. must begin as start command “wb 00 00” , and 

finish as end command “wb 00 ff”, and Adj. offset if need.

(2) Manual adjustment. method

1) Set TV in Adj. mode using POWER ONLY key.

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 adj. R/C → 9. White-

Balance then press the cursor to the right(key ►).

(When right key(►) is pressed 204 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)  Adjustment  is  performed  in  COOL,  MEDIUM,  WARM  3 

modes of color temperature.

 ▪  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 204 Gray pattern.

▪ Adjustment 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.

2) Probe location

:  Color Analyzer(CA-210) probe should be within 10 cm 

and perpendicular of the module surface (80° ~ 100°)

3) Aging time

-  After Aging Start, Keep the Power ON status during 5 

Minutes.

-  In  case  of  OLED,  Back-light  on  should  be  checked 

using no signal or Full-white pattern.

▪ Luminance : 204 Gray

▪ Standard color coordinate and temperature using CS-1000

  (over 26 inch)

▪ Standard color coordinate and temperature using CA-210(CH 17)

(1)  Equipment  :  RF  Remote  control  for  test,  IR-KEY-Code 

Remote control for test

(2)  You  must  confirm  the  battery  power  of  RF-Remote  control 

before test(recommend that change the battery per every lot)

(3) Sequence (test)

1)  If you select the 'start key(wheel)' key on the Adjustment 

remote control, you can pairing with the TV SET.

2)  You can check the cursor on the TV Screen, when select 

the 'Wheel Key' key on the Adjustment remote control.

3)  You must remove the pairing with the TV Set by select 

‘Back + Home’ key on the Adjustment remote control.

(Pattern Generator MSHG-600, MSPG-6100[Support HDMI1.4])

* HDMI mode NO. 872 , pattern No.83

(1)  Please input 3D test pattern like below.

(2) When 3D OSD appear automatically, then select Green key.

(3) Don't wear a 3D Glasses, check the picture like below.

Mode

Coordinate

Temp

∆uv

x

y

Cool

0.271

0.270

13000 K

0.0000 

Medium

0.286

0.289

9300 K

0.0000 

Warm

0.313

0.329

6500 K

+ 0.0030 

Mode

Coordinate

Temp

∆uv

x

y

Cool

0.276 ± 0.002 0.283 ± 0.002 11000 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

+0.0030 

- 19 -

Step 1) Turn on TV

Step 2) Select Network Connection option in Network Menu.

Step 3) Select Start Connection button in Network Connection.

Step 4)  If the system finds any AP like blow PIC, it is working 

well.

(only for DVB-S/S2 model)

▪ Test method

(1) Set TV in Adj. mode using POWER ON.

(2) Connect cable between satellite ANT and test JIG.

(3)  Press Yellow key(ETC+SWAP) in Adj Remote control to 

make LNB on.

(4) Check LED light ‘ON’ at 18 V menu.

(5) Check LED light ‘ON’ at 22 KHz tone menu.

(6)  Press Blue key(ETC+PIP INPUT) in Adj Remote control 

to make LNB off.

(7) Check LED light ‘OFF’ at 18 V menu.

(8) Check LED light ‘OFF’ at 22 KHz tone menu.

▪ Test result

(1)  After  press  LNB  On  key,  ‘18  V  LED’  and  ‘22  KHz  tone 

LED’ should be ON. 

(2)  After press LNB OFF key, ‘18 V LED’ and ‘22 KHz tone 

LED’ should be OFF. 

▪ Test Method

(1) Push “Power only” key.

(2) Push “HDMI” hot key.

(3)  Inspect  whether  light  scattering  is  occurred  in  internal 

black pattern or not.

(4) Push “Power only” key.

- Option selection is only done for models in Non-EU 

(1)  Press ADJ key on the Adj. R/C, then select Country Group 

Meun

(2)  Depending on destination, select Country Group Code 04 

or  Country  Group  EU  then  on  the  lower  Country  option, 

select  US,  CA,  MX.  Selection  is  done  using  +,  -  or  ►◄ 

key.

(1) Turn on TV

(2) Select HDMI4 mode using input Menu.

(3)  Set  MHL  Zig(M1S0D3617)  using  MHL  input,  output  and 

power cord.

(4) Connect HDMI cable between MHL Zig and HDMI4 port.

(5) Check LED light of Zig and Module of Set.

Result)  If,  The  LED  light  is  green  and  The  Module  shows 

normal stream → OK, Else → NG

- 20 -

▪  Method : Press "ADJ" key on the Adjustment remote control, 

then select Tool option.

▪  After final inspection, press "IN-STOP" key of the Adjustment 

remote  control  and  check  that  the  unit  goes  to  Stand-by 

mode.

-  Check that Power cord is fully inserted to the SET.

  (If loose, re-insert)

-  Unit  fully  inserted  Power  cord, Antenna  cable  and A/V 

arrive to the auto-check process. 

- Connect D-terminal to 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.

(Remove CORD, A/V form 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 

pallet to move on to next process.

▪ TEST voltage

- GND: 1.5 KV / min at 100 mA

- SIGNAL: 3 KV / min at 100 mA

▪ TEST time: 1 second

▪ TEST POINT

-  GND  TEST  =  POWER  CORD  GND  &  SIGNAL  CABLE 

METAL GND

NEUTRAL

▪ LEAKAGE CURRENT: At 0.5 mArms

Measurement condition:

(1) RF input: Mono, 1 KHz sine wave signal, 100 % Modulation

(2) CVBS, Component: 1 KHz sine wave signal 0.5 Vrms

(3) RGB PC: 1 KHz sine wave signal 0.7 Vrms

(1) Put the USB Stick to the USB socket.

(2) Automatically detecting update file in USB Stick.

-  If your downloaded program version in USB Stick is Low, 

it didn't work. But your downloaded version is High, USB 

data is automatically detecting.(Download Version High & 

Power only mode, Set is automatically Download)

(3) Show the message "Copying files from memory".

(4) Updating is starting.

(5) Updating Completed, The TV will restart automatically.

(6)  If  your TV  is  turned  on,  check  your  updated  version  and 

Tool option. (explain the Tool option, next stage)

*  If downloading version is more high 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.

No.

Item

Min

Typ Max

Unit

Remark

1.

Audio practical 

max Output, L/R

(Distortion=10% 

max Output)

9.0 10.0 12.0

W

Measurement condition

Auto Volume :Off

Audio EQ : Off

Clear Voice : Off

Virtual Surround:Off

8.5

8.9

9.8

Vrms

2.

Speaker (8Ω

Impedance)

10.0 15.0

W