42PW340-UB, 42PW350-UA, 42PW350-UE, 42PW350U-UC (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

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)

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

jf

00

192

161

95

192

R Cut

64

64

64

127

G Cut

64

64

64

127

B Cut

64

64

64

127