50PW450-TD (CHASSIS:PA11A) - LG TV Service Manual (repair manual). Page 9

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* 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)

* Manual W/B process using adjusts Remote control.
(1) After enter Service Mode by pushing “ADJ” key,
(2) Enter  White  Balance  by  pushing  “

G

”  key  at  “.  White

Balance”

(3) Stick  the  sensor  to  the  center  of  the  screen  and  select

each items(Red/Green/Blue Gain) using 

D

/

E 

(CH +/-) key

on R/C.

(4) Adjust R/G/B Gain using 

F

/

G 

(VOL +/-) key on R/C.

(5) Adjust  three  modes  all(Cool/Medium/Warm)  :  Fix  the  one

of R/G/B Gain and Change the others.

(6) When the adjustment is completed, Enter “COPY ALL”.
(7) Exit adjustment mode using EXIT key on R/C.

* After  You  finish  all  adjustments,  Press  °∞In-start°± button

and  compare  Tool  option  and  Area  option  value  with  its
BOM, if it is correctly same then 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.

* Push  The  “N  STOP  KEY”  after  completing  the  function

inspection. And Mechanical Power Switch must be set “ON”. 

* To  check  the  coordinates  of  White  Balance,  you  have  to

measure at the below conditions.

Picture  mode  :  Vivid,  Energy  Saving  :  Off,  Below  the
Advanced control, Dynamic Contrast : Off, Dynamic Colour :
Off 
Colour Temp. 

-> Picture Mode change : Vivid ? Vivid(User)

* Check if Power LED Color and Power Consumption operate

as standard. 

(1) Set Input to RGB and connect D-sub cable to set
(2) Measurement Condition: (100~240V@ 50/60Hz)
(3) Confirm  DPM  operation  at  the  state  of  screen  without

Signal

(1) Connect D-sub Signal Cable to D-Sub Jack.
(2) Write  EDID  DATA  to  EEPROM  (24C02)  by  using  DDC2B

protocol.

(3) Check whether written EDID data is correct or not.

* For  SVC  main  Ass’y,  EDID  have  to  be  downloaded  to

Insert Process in advance.

(1) Connect HDMI Signal Cable to HDMI Jack.
(2) Write  EDID  DATA  to  EEPROM(24C02)  by  using  DDC2B

protocol.

(3) Check whether written EDID data is correct or not.

* For  SVC  main  Ass’y,  EDID  have  to  be  downloaded  to

Insert Process in advance.

(1) All Data : HEXA Value
(2) Changeable Data :

*: Serial No : Controlled / Data:01
**: Month : Controlled / Data:00
***:Year : Controlled
****:Check sum

(1) Press Adj. key on the Adj. R/C,
(2) Select EDID D/L menu.
(3) By pressing Enter key, EDID download will begin
(4) If Download is successful, OK is display, but If Download is

failure, NG is displayed.

(5) If Download is failure, Re-try downloads.

*Caution: Never  connect  HDMI  &  D-sub  Cable  when  EDID

downloaded.

O 

Edid data and Model option download (RS232)

NO

Item

CMD 1 CMD 2 Data 0

Enter  

download     A

A

0     0 When transfer the

download 

‘Mode In’

‘Mode In’

Mode

Carry the 

command.

EDID data download

A 

E

00  10 Automatically

Model

download

option

(The use of 

download

a internal pattern)