DOWNLOAD LG 55LH40 / 55LH41 / 55LH400С (CHASSIS:LA92B) Service Manual ↓ Size: 10.58 MB | Pages: 47 in PDF or view online for FREE

4. Updating is staring.

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.

* After downloading, have to adjust TOOL OPTION again.
1. Push "IN-START" key in service remote controller.
2. Select "Tool Option 1" and Push “OK” button.
3. Punch in the number. (Each model has their number.)
4. Completed selecting Tool option.

4.1 Board-level adjustment

• Adjust 480i Comp1 adj.(Comp1080i & RGB Adjust use internal

pattern).

• EDID/DDC download
Above  adjustment  items  can  be  also  performed  in  Final
Assembly  if  needed.  Both  Board-level  and  Final  assembly
adjustment  items  can  be  check  using  In-Start  Menu  1.  Adjust
Check.

* After Board level adjustment, set volume setting value 0

4.2 Final assembly adjustment

•White Balance adjustment
•RS-232C functionality check
•Factory Option setting per destination
•Ship-out mode setting (In-Stop)

4.3 Etc.

•Ship-out mode
•Service Option Default
•USB Download(S/W Update, Option)

5.1.1 Overview

ADC  adjustment  is  needed  to  find  the  optimum  black  level
and  gain  in  Analog-to-Digital  device  and  to  compensate
RGB deviation.

5.1.2 Equipment & Condition

1) Jig (RS-232C protocol) 
2) Input : MSPG-925FS(Model  :  209  ,Pattern  :  65,  Only

component))

3) RGB Adjust use internal pattern.5.1.3 Adjustment

5.1.3 Adjustment

5.1.2.1 Method

• Using RS-232, adjust items listed in 3.1 in the order shown
in 5.1.2.3 Adj. protocol

Ref.) ADC adj. RS232C Protocol_Ver1.0

5.1.2.3 Adj. order

•ad 00 00 [Enter ADC adj. mode]
•ad 00 10 [Adjust 480i Comp1/1080i Comp1/1024*768 RGB]
•ad 00 90 End adj.

- 17-

C

2009

 

 

Model 

Tool option1  Tool option2

Tool option3 

Tool option4

47LH55-UA 

33281 

3400 

35748 

1024

55LH55-UA 

45569 

3400 

35748 

1024

55LH40-UA 

45313 

3400 

35748 

1024

Protocol 

Command 

Set ack

Enter adj.

ad 00 00 

d 00 OK00x

mode

Begin adj. 

ad 00 10

Return adj.

OKx (Success)

result

NGx (Fail)

Read adj. 

(main)

(main) 

data

ad 00 20

000000000000000000000000007c007b006dx

(sub )  

(Sub) 

ad 00 21 

000000070000000000000000007c00830077x

Confirm adj. 

ad 00 99

NG 03 00x (Fail)

NG 03 01x (Fail)

NG 03 02x (Fail)

OK 03 03x (Success)

End adj. 

ad 00 90 

d 00 OK90x

6.1.1 Overview

•W/B adj.: 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
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.

6.1.2 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
(Model:217, Pattern:78)
-> Only when internal pattern is not available
• Color Analyzer Matrix should be calibrated using CS-1000

6.1.3 Equipment connection map

• 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]

• 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. complete
*(wb 00 20(Start), wb 00 2f(End)) -> Off-set adjustment

wb 00 ff -> End white balance auto-adjustment

6.1.4 Adjustment method

6.1.4.1 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

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  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 adjustment offset if needed.

6.1.4.2 Manual adj. method

Dynamic contrast : off
Dynamic color : off
OPC : Off
Energy saving mode : Off

1) Set TV in adj. mode using POWER On Key
2) Press ADJ key Æ EZ adjust using adj. R/C
3) Using CH + / - KEY, select 7.TEST PATTERN then press

Enter to place inHEAT RUN mode and wait for 5 minutes.

4) Zero calibrate the probe of Color Analyzer, then place iton

the center of LCD module within 10 cm of the surface.

5) Press ADJ key Æ 6. White-Balance then press the cursor

to the right (KEY

)

(When

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.

7) Adjustment  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 Adjustment 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.   

• Adjustment 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.

2) Probe location

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

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

- B/L  on  should  be  checked  using  no  signal  or  Full  white

Pattern

6.1.5 Reference 

(White Balance adj. coordinate and color temperature)

• Luminance: Full white 216 Gray
• Standard color coordinate and temperature using CS-1000

- 18 -

C

2009

Color Analyzer

Computer

RS-232C

# Pattern Generator

* If TV internal pattern is used,not needed

Signal Source

Probe

RS-232C

RS-232C

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)

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

C

2009

- 19 -

• 55LH40-UA, 47/55LH55-UA (N-America)

Standard  color  coordinate  and  temperature  using  CA-
210(CH 09) 

6.2.1 Overview

America due to rating

• Applied  model:  LA92B  Chassis  applied  None  USA

Model(Canada, Mexico)

6.2.2 Method

1) Press  ADJ  key  on  the  Adjustment  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

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

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

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

< step 2>                         < step 3>                         < step 4>

< step 5>                        < step 6>

- 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

(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

pallet to move on to next process.

7.2 Checkpoint

NEUTRAL

• LEAKAGE CURRENT: At 0.5mArms

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

Green Eye-Check 

Sensor Data:

      1 

Backlight:          0

 

O.K 

Green Eye-Check 

Sensor Data:      215 

Backli ght :          100 

C

2009

- 20 -

SIDE 

SIDE 

JA

C

K

 P

A

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JA

C

K

 P

A

C

K

D-sub RGB

HDMI 1

Side 

A

V

CV

BS

, 

L

/R

RS-232C (Ctrl./SVC)

RGB/

H

/V

Half-NIM Tuner

MAX3

232

Saturn5

Saturn5

(ATSC US)

(ATSC US)

LGE3159

MPEG2

L

inux

Scal

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IF

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SIF

TU_CVBS

R

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5

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HDMI4

HDMI 2

RX

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X

R

X

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RE

A

R

 

RE

A

R

 

JA

C

K

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JA

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T

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VS

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SCL

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LCD 

Module

(FHD+120Hz)

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FRC IC

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GE7329)

DDR2

Qimonda/Hy

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FRC Block

FRC Block

LV

D

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HDMI 3

HDMI S/W