LG 22LU40R, Service Manual

Page: 14 / 30

4.6. Input Tool-Option, Area Option.
## TOOL Option, Area Option change and AC off
Before PCBA check, you have to change the Tool option,
Area option and have to AC off/on (Plug out and in)
(If missing this process, set can operate abnormally)
4.6.1. Profile
: Must be changed the option value because being different
with some setting value depend on module maker, inch and
market
4.6.2. Equipment : adjustment remote control.
4.6.3. Adjustment method
The input methods are same as other chassis.(Use IN-START
Key on the Adjust Remocon.)
(If not changed the option, the input menu can differ the
model spec.)
* Refer to Job Expression of each main chassis ass’y
(EBTxxxxxxxx) for Option value
* Never push the IN-STOP KEY after completing the function
inspection.
4.7. Check SW Version
(1) Method
1) Push In-star key on Adjust remote-controller.
2) SW Version check
Check “SW VER : V3.xx” – LH20
5. White Balance adjstment
5.1. Overview
(1) Purpose : Adjust the color temperature to reduce the
deviation of the module color temperature.
(2) Principle : To adjust the white balance without the
saturation, Fix the one of R/G/B gain to 192 (default data)
and decrease the others.
(3) Adjustment mode : Three modes – Cool / Medium / Warm
5.2. Required Equipment
(1) Remote controller for adjustment
(2) Color Analyzer : CA100+ or CA-210 or same product -
LCD TV (ch:9)
(should be used in the calibrated ch by CS-1000)
(3) Auto W/B adjustment instrument(only for Auto adjustment)
5.3. Connecting diagram of equipment for
measuring (For automatic adjustment)
* LP91A~D Support RS-232C & I2C DDC Communication-White
Balance Mode.
(1) Enter the adjustment mode of DDC
- Set command delay time : 50ms
- Enter the DDC adjustment mode at the same time heat-
run mode when pushing the power on by power only key
- Maintain the DDC adjustment mode with same condition
of Heat-run => Maintain after AC off/on in status of Heat-
run pattern display)
(2) Release the DDC adjustment mode
- Release the adjust mode after AC off/on or std-by off/on
in status of finishing the Hear-run mode
- Release the Adjust mode when receiving the aging off
command(F3 00 00) from adjustment equipment.
- Need to transmit the aging off command to TV set after
finishing the adjustment.
- Check DDC adjust mode release by exit key and release
DDC adjust mode)
(3) Enter the adjust mode of white balance)
- Enter the white balance adjustment mode with aging
command (F3, 00, FF)
* Luminance min value is 150cd in the Cool/Medium/Warm
mode(For LCD)
5.3. Adjustment of White Balance (for Manual
adjustment)
(1) Color analyzer(CA100+, CA210) should be used in the
calibrated ch by CS-1000
(2) Operate the zero-calibration of the CA100+ or CA-210,
then stick sensor to the module when adjusting.
(3) For manual adjustment, it is also possible by the following
sequence.
1) Select white pattern of heat-run by pressing “POWER
ON” key on remote control for adjustment then operate
heat run longer than 15 minutes. (If not executed this
step, the condition for W/B may be different.)
2) Push “Exit” key.
3) Change to the AV mode by remote control.
4) Input external pattern (85% white pattern)
5) Push the ADJ key -> Enter “0000” (Password)
6) Select “3. W/B ADJUST”
7) Enter the W/B ADJUST Mode
8) Stick the sensor to the center of the screen and select
each items (Red/Green/Blue Gain and Offset) using
D
/
E
(CH +/-) key on R/C..
9) Adjust R/ G/ B Gain using
F
/
G
(VOL +/-) key on R/C.
10) Adjust three modes all (Cool / Medium / Warm) : Fix
the one of R/G/B gain and change the others
11) When adjustment is completed, Enter “COPY ALL”.
12) Exit adjustment mode using EXIT key on R/C.
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