37LG50D (CHASSIS:LJ82A) - LG TV Service Manual (repair manual). Page 18

O 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 "Inner" will be selected. 

• Connect all cables and equipments like Pic.5)
• Set Baud Rate of RS-232C to 115200. It may set

115200 orignally.

• Connect RS-232C cable to set
• Connect HDMI cable to set
• Select LA75A Chassis at Adjustment equipment, and

adjust.

¢ RS-232C Command (Commonly apply) 
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)

• "wb 00 00": Start Auto-adjustment of white balance.
• "wb 00 10": Start Gain Adjustment (Inner pattern) 
• "jb 00 c0" : 
• …
• "wb 00 1f": End of Adjustment

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

2f-end)

• "wb 00 ff": End of white balance adjustment (inner

pattern disappear)

O White Balance Adjustment (Manual adjustment)

• Test Equipment: CA-210

- Using LCD color temperature, Color Analyzer (CA-

210) must use CH 9, which Matrix compensated
(White, Red, Green, Blue compensation) with CS-
2100. See the Coordination bellowed one. 

• 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 LCD 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 (42LB7DF-SB)

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 (42LB7DF-SB)

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 (47LB7DF-SB)

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 (

A

key) turn to

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

Attachment: White Balance adjustment coordination and color
temperature.

O Using CS-1000 Equipment. 

- COOL : T=11000K, ∆uv=0.000, x=0.276 y=0.283 
- MEDIUM  : T=9300K, ∆uv=0.000, x=0.285 y=0.293 
- WARM  : T=6500K, ∆uv=0.000, x=0.313 y=0.329 

O Using CS-210 Equipment. (9 CH) 

• Contrast value: 216 Gray 

COOL

CA-210 0.276±0.002

0.283±0.002

MEDIUM CA-210 0.285±0.002

0.293±0.002

WARM

CA-210 0.313±0.002

0.329±0.002

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