Read LG 42LG7000 (CHASSIS:LD88F) Service Manual online
7.3. Auto White Balance
1) Adjust in the place where the influx of light like floodlight
around is blocked. (illumination is less than 10ux).
2) Adhere closely the Color Analyzer (CA210) to the module
less than 10cm distance, keep it with the surface of the
Module and Color Analyzer’s Prove vertically.(80~100°).
Module and Color Analyzer’s Prove vertically.(80~100°).
(3) Aging time
- After aging start, keep the power on (no suspension of
power supply) and heat-run over 15 minutes.
- Using ‘no signal’ or ‘full white pattern’ or the others, check
the back light on.
- Auto adjustment Map(RS-232C)
7.4. Manual white Balance
(1) Press the ADJ KEY on Adjustment R/C.
Select “3. Test Pattern” by using
D
/
E
(CH +/-) and press
ENTER(
A
)
Select “White” by using
F
/
G
(VOL +/-) and press
ENTER(
A
) and heat run over 15 minutes.
(2) Zero Calibrate CA-100+ / CA-210, and when controlling,
stick the sensor to the center of LCD module surface.
(3) Press the ADJ KEY on Adjustment R/C
(4) Select “2. White Balance” and press
(4) Select “2. White Balance” and press
G
(VOL +)
Set test-pattern on and display inside pattern.
(5) Control is carried out on three color temperatures, COOL,
MEDIUM, WARM.
(Control is carried out three times)
< Temperature: COOL >
- R-Cut / G-Cut / B-Cut is set to 64.
- Gain of Fixed color should be kept on 192, and
- Gain of Fixed color should be kept on 192, and
adjust other two lower than 192.
- Each gain is limited to 192.
< Temperature: MEDIUM >
- R-Cut / G-Cut / B-Cut is set to 64.
- Gain of Fixed color should be kept on 192, and
- Gain of Fixed color should be kept on 192, and
adjust other two lower than 192.
- Each gain is limited to 192.
< Temperature: WARM >
- R-Cut / G-Cut / B-Cut is set to 64.
- Gain of Fixed color should be kept on 192, and
- Gain of Fixed color should be kept on 192, and
adjust other two lower than 192.
- Each gain is limited to 192.
* One of R Gain / G Gain / B Gain should be kept on
192, and adjust other two lower than 192.
(When R/G/B GAIN are all 192, it is the FULL
DYNAMIC Range of Module)
(When R/G/B GAIN are all 192, it is the FULL
DYNAMIC Range of Module)
- 13 -
RS-232C COMMAND
MIN
CENTER
Max
[CMD ID DATA]
(DEFAULT)
Cool
Medium Warm
Cool
Medium Warm
R Gain
jg
Ja
jd
00
192
192
192
255
G Gain
jh
Jb
je
00
192
192
192
255
B Gain
ji
Jc
jf
00
192
192
192
255
R Cut
64
64
64
128
G Cut
64
64
64
128
B Cut
64
64
64
128
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