42PW350R-MA (CHASSIS:PU11A) - LG TV Service Manual (repair manual). Page 10

(3) White Balance Adjustment 

- If you can’t adjust with inner pattern, then you can adjust

it using HDMI pattern. You can select option at “Ez-Adjust
Menu  –  7.  White  Balance”  there  items  “NONE,  INNER,
HDMI”. It is normally setting at inner basically. If you can’t
adjust using inner pattern you can select HDMI item, and
you can adjust.

- In manual Adjust case, if you press ADJ button of service

remocon, and enter “Ez-Adjust Menu – 7. White Balance”,
then  automatically  inner  pattern  operates.  (In  case  of
“Inner” originally “Test-Pattern. On” will be selected in The
“Test-Pattern. On/Off”. 

O

Connect all cables and equipments like Pic.5)

O

Set  Baud  Rate  of  RS-232C  to  115200.  It  may  set
115200 orignally.

O

Connect RS-232C cable to set

O

Connect HDMI cable to set

V 

RS-232C COMMAND(Commonly apply)

O 

wb 00 00”: Start Auto-adjustment of white balance.

O

“wb 00 10”: Start Gain Adjustment (Inner pattern) 

O

“jb 00 c0” : 

O

…

O

“wb 00 1f”: End of Adjustment

* If it needs, offset adjustment (wb 00 20-start, wb 00 2f-

end)

O

“wb  00  ff”:  End  of  white  balance  adjustment  (inner
pattern disappear)

V 

Adjustment Mapping information

O

When  Color  temperature  (White  balance)  Adjustment
(Automatically)

- Press  “Power  only  key”  of  service  remocon  and

operate automatically adjustment.

- Set BaudRate to 115200.

O

You must start “wb 00 00” and finish it “wb 00 ff”.

O

If it needs, then adjustment “Offset”.

(4) White Balance Adjustment (Manual adjustment)

1)  Test Equipment: CA-210

- Using  PDP  color  temperature,  Color  Analyzer  (CA-

210)  must  use  CH  10,  which  Matrix  compensated
(White,  Red,  Green,  Blue  compensation)  with  CS-
2100. See the Coordination bellowed one. 

2) Manual adjustment sequence is like bellowed one.

- Turn  to  “Ez-Adjust”  mode  with  press  ADJ  button  of

service remocon.

- Select  “10.Test  Pattern”  with  CH+/-  button  and  press

enter.  Then  set  will  go  on  Heat-run  mode.  Over  30
minutes set let on Heat-run mode.

- Let CA-210 to zero calibration and must has gap more

10cm from center of PDP module when adjustment. 

- Press  “ADJ”  button  of  service  remocon  and  select

“7.White-Balance” in “Ez-Adjust” then press “

G

” button

of navigation key. (When press “

G

” button then set will

go to full white mode)

- Adjust at three mode (Cool, Medium, Warm)
- If “cool” mode 

Let  B-Gain  to  192  and  R,  G,  B-Cut  to  64  and  then
control R, G gain adjustment High Light adjustment.

- If “Medium” and “Warm” mode Let R-Gain to 192 and

R,  G,  B-Cut  to  64  and  then  control  G,  B  gain
adjustment High Light adjustment.

- All of the three mode 

Let  R-Gain  to  192  and  R,  G,  B-Cut  to  64  and  then
control G, B gain adjustment High Light adjustment.

- With volume button (+/-) you can adjust.
- After all adjustment finished, with Enter (_ key) turn to

Ez-Adjust  mode.  Then  with  ADJ  button,  exit  from
adjustment mode

- 10 -

RS-232C COMMAND

[CMD    ID      DATA]

Meaning

wb

00

00

White Balance adjustment start.

wb

00

10

Start of adjust gain 

(Inner white pattern)

wb

00

1fEnd 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)

RS-232C COMMAND

CENTER

[CMD ID DATA]

MIN

(DEFAULT)

MAX

Cool Mid

Warm

Cool

Mid

Warm

R Gain

jg

Ja

jd

00

184

192

192

192

G Gain

jh

Jb

je

00

187

183

159

192

B Gain

ji

Jc

jf00

192

161

95

192

R Cut

64

64

64

127

G Cut

64

64

64

127

B Cut

64

64

64

127