22LH20R (CHASSIS:LP91A) - LG TV Service Manual (repair manual). Page 14

## 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.

(1) Method

1) Push In-star key on Adjust remote-controller.
2) SW Version check

Check “SW VER : V3.xx” – LH20

(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

(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)

* 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)

(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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