DOWNLOAD LG 47LH80YD (CHASSIS:LB91F) Service Manual ↓ Size: 7.25 MB | Pages: 66 in PDF or view online for FREE

5.1.1 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. 

5.1.2 Equipment

1) Color Analyzer: CA-210 (NCG: CH 9 / WCG: CH12)
2) Adj.  Computer(During  auto  adj.,  RS-232C  protocol  is

needed)

3) Adjust Remocon
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

5.1.3 Equipment connection 

5.1.4 Adj. Command (Protocol)

- 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}

• RS-232C Command(Automatic adjustment)

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

• Adjustment Map

5.2.1 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.

5.2.2 Manual adj. method

1) Set TV in Adj. mode using POWER ON
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

- 13 -

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

Connection Diagram of Automatic Adjustment

START

6E

50

03

00

CS

LEN

CMD

VAL

STOP

A

A

A

A

A

A

A

A

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)

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

* 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.

• Standard color coordinate and temperature using CS-1000 

• Standard color coordinate and temperature using CA-210(CH 10)

(1) Overview

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

- Applied  model:  LA92A  Chassis  applied  None  USA

model(CANADA, MEXICO)

(2) Method

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

Group Menu

2) Depending on destination, select KR or US, then on the

lower  Country  option,  select  US,  CA,  MX.  Selection  is
done using +, - KEY

• TV

- Adjust directly if it's not a Wireless/Wired state 
- Adjust after changing to HDMI5 on the Wireless/Wired state

• Media-Box  

- Adjust  on  the  Wireless/Wired  state  that  is  excepted  the

HDMI5. 

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>

(1) Overview

To  set  1:1  connection  from  selecting  the  same  Wireless
channel on the TV and Media-Box, and fixing Mac address. 

* Set this on the Wired (HDMI cable connection) state. 

(2) Method 

1) Press  ADJ  Key  on  the  adjustment  R/C  and  select  “9.

Wirelesss  Pairing”  and  access  to  the  Manu  with  using  the
ENTER key. 

2) Make to display “OK” on paired stauts of items by using F/

G , after select LRP Channel  

3) Media-box  turn  off/on  and  then  confirm  connection  of

Wireless, after remove HDMI cable

- 14 -

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

Green Eye-Check 

Sensor Data:

      1 

Backlight:          0

 

O.K 

Green Eye-Check 

Sensor Data:      215 

Backli ght :          100 

- 15 -

(1) Overview

USB  Download  is  function  for  qickly  service  through  S/W
upgrade  and  for  S/W  upgrade  application  that  is  necessary
adjust board. 

(2) Methood

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

3. Show the message “Copying files from memory”
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.

(1) Overview

In case of Weltrend Micom applied to TV main and Media-Box
main b/d, excuate upgrade by using the Download jig. becuase
USB download is impossible

(2) Method

1) Connect Computer and Jig, TV or Media Box.
2) Excuate Weltren MCU ISP program, and Load Download file.

3) When press F1 or Auto button, start download. 
4) Confirm download is normal through Print .
5) Press “IN-START” on adjust R/C, Confirm S/W version.

(1) Overview

Adjust without adjustment equipment at option change, becuase
model name and specificaion displayed on menu.

* Chage prohivition at pleasure.

(2) Method

1) Push "IN-START" key in service remote controller.
2) Select "Tool Option 1" and Push “Enter” Key.
3) "Tool Option 1"  is changeable manu for Inch, Tool, Module

maker, Module revision.

Tool Option1: Inch, Tool, Maker, Module Rev.
Tool Option2: HDMI Count, HDMI Switch IC, Component Count,

S-Video, RCA AV Count, Scart Count

Tool Option3: EMF(JPEG,MP3),  Divx,  Bluetooth,  Digital  Eye,

Headphone,  OPC,  EPA,  e-Manual,  Audio  Amp,
LED Type

Tool Option4: Clear  QAM,  Local  Dimming,  THX,  Digital  Demod,

Analog Demod, THS Media Director

(3) Tool option setting.

 

 

 

MODEL 

Display 

opt1 

opt2 

opt3 

opt4

47”

TV 

33473 

4168 

548 

4352 

Media-Box 

33473 

4424 

52132 

4352

55”

TV 

45761 

4168 

548 

4352

Media-Box 

45761 

4424 

52132 

4352

- 16 -