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LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
4.2.5. Adj. Command (Protocol)
<Command Format>
- LEN: Number of Data Byte to be sent
- CMD: Command
- VAL: FOS Data value
- CS: Checksum of sent data
- A: Acknowledge
Ex) [Send: JA_00_DD] / [Ack: A_00_okDDX]
▪ RS-232C Command used during auto-adjustment.
Ex) wb 00 00 → Begin white balance auto-adj.
wb 00 10 → Gain adj.
ja 00 ff → Adj. data
jb 00 c0
...
...
wb 00 1f → Gain adj. completed
*(wb 00 20(Start), wb 00 2f(end)) → Off-set adj.
wb 00 ff → End white balance auto-adj.
▪ Adj. Map
4.2.6. Adjustment method
(1) Auto adjustment method
1) Set TV in adj. mode using P-Only key(or POWER ON key).
2) Place optical probe on the center of the display.
- It need to check probe condition of zero calibration
before adjustment.
3) Connect RS-232C Cable.
4) Select mode in ADJ Program and begin a adjustment
5) When WB adjustment is completed with OK message,
check adjustment status of pre-set mode(Cool, Medium,
Warm)
6) Remove probe and RS-232C cable.
▪ W/B Adj. must begin as start command “wb 00 00” , and
finish as end command “wb 00 ff”, and Adj. offset if need.
(2) Manual adjustment method
1) Set TV in Adj. mode using POWER ON.
2) Zero Calibrate the probe of Color Analyzer, then place it
on the center of LCD module within 10 cm of the surface.
3) Press ADJ key → EZ adjust using adj. R/C → 11. White-
Balance then press the cursor to the right(key ►).
(When right key(►) is pressed 206 Gray internal pattern
will be displayed)
4) Adjust Cool modes
① Fix the one of R/G/B gain to 192 (default data) and
decrease the others.(If G gain is adjusted over 172
and R and B gain less than 192 , Adjust is O.K.)
② If G gain is less than 172,
Increase G gain by up to 172, and then increase R
gain and G gain same amount of increasing G gain.
③ If R gain or B gain is over 255,
Readjust G gain less than 172, Conform to R gain is
255 or B gain is 255
5) Adjust two modes (Medium/Warm) Fix the one of R/G/B
gain to 192 (default data) and decrease the others.
6) Adj. is completed, Exit adjust mode using “EXIT” key on
Remote control.
■ Adj. condition and cautionary items
1) Lighting condition in surrounding area
Surrounding lighting should be lower 10 lux. Try to
isolate adj. area into dark surrounding.
2) Probe location
Color Analyzer(CA-210) probe should be within 10 cm
and perpendicular of the module surface(80° ~ 100°)
4.2.7. Reference (White balance Adj. coordinate and
color temperature)
▪ Luminance : 204 Gray
▪ Standard color coordinate and temperature using CS-1000
(over 26 inch)
▪ Standard color coordinate and temperature using CA-210(CH 14)
START 6E A 50 A LEN A 03 A CMD A 00 A VAL A CS STOP
RS-232C COMMAND
[CMD ID DATA]
Explanation
wb 00 00 Begin White Balance adjustment
wb 00 10 Gain adjustment(internal white pattern)
wb 00 1f Gain adjustment completed
wb 00 20 Offset adjustment(internal white pattern)
wb 00 2f Offset adjustment completed
wb 00 ff
End White Balance adjustment
(internal pattern disappears )
Adj. item
Command
(lower caseASCII)
Data Range
(Hex.)
Default
(Decimal)
CMD1 CMD2 MIN MAX
Cool
R Gain j g 00 C0
G Gain j h 00 C0
B Gain j i 00 C0
R Cut
G Cut
B Cut
Medium
R Gain j a 00 C0
G Gain j b 00 C0
B Gain j c 00 C0
R Cut
G Cut
B Cut
Warm
R Gain j d 00 C0
G Gain j e 00 C0
B Gain j f 00 C0
R Cut
G Cut
Mode
Coordinate
Temp ∆uv
x y
Cool 0.271 0.270 13000 K 0.0000
Medium 0.286 0.289 9300 K 0.0000
Warm 0.313 0.329 6500 K 0.0000
Mode
Coordinate
Temp ∆uv
x y
Cool 0.271 ± 0.002 0.270 ± 0.002 13000 K 0.0000
Medium 0.286 ± 0.002 0.289 ± 0.002 9300 K 0.0000
Warm 0.313 ± 0.002 0.329 ± 0.002 6500K 0.0000
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