Read LG 47LS5700 (CHASSIS:LJ22E) Service Manual online
- 18 -
● RS-232C Command (Commonly apply)
RS-232C COMMAND
Explanation
CMD
DATA
ID
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)
※
Notice) Adjustment Mapping information
RS-232C COMMAND
[CMD ID DATA]
MIN
CENTER
(DEFAULT)
MAX
C50
0
W50
00
C50
0
W50
R Gain Jg
ja
jd
00
192
192
192
192
G Gain Jh
jb
je
00
189
175
157
192
B Gain Ji
jc
jf
153
127
57
192
R Gain
64
64
64
127
G Gain
64
64
64
127
B Gain
64
64
64
127
▪ When Color temperature (White balance) Adjustment
(Automatically)
- Press “Power only key” of service remocon and operate
automatically adjustment.
- Set BaudRate to 115200.
▪ You must start “wb 00 00” and finish it “wb 00 ff”.
▪ If it needs, then adjustment “Offset”.
● White Balance Adjustment (Manual adjustment)
▪ Test Equipment: CA-210
- Using LCD color temperature, Color Analyzer (CA-210) must
use CH 14, 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 “►” button of navigation
key.
(When press “►” button then set will go to full white mode)
- Adjust at three mode (C50, 0, W50)
- If “C50
(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 “0
(Medium)” and “W50(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
Attachment: White Balance adjustment coordination and color
temperature.
● Using CS-1000 Equipment.
- C50 (COOL) : T=11000K, △uv=0.000, x=0.276 y=0.283
- 0 (MEDIUM) : T=9300K, △uv=0.000, x=0.285 y=0.293
- W50 (WARM) : T=6500K, △uv=0.000, x=0.313 y=0.329
Using CA-210 Equipment. (14 CH)
- Contrast value: 208 Gray
Color temperature Test Equipment
Color Coordination
x
y
C50
CA-210
0.269±0.002
0.273±0.002
0
CA-210
0.285±0.002
0.293±0.002
W50
CA-210
0.313±0.002
0.329±0.002
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