42LD320H (CHASSIS:LB0AW) - LG TV Service Manual (repair manual). Page 12

* Auto-control interface and directions

1) Adjust in the place where the influx of light like floodlight

around is blocked. (Illumination is less than 10 lux).

2) Adhere closely the Color Analyzer (CA210) to the module

less than 10 cm distance, keep it with the surface of the
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 5 minutes.

- Using ‘no signal’ or ‘full white pattern’ or the others,

check the back light on.

• Auto adjustment Map(RS-232C)

RS-232C COMMAND
[CMD

ID DATA]

Wb

00

00

White Balance Start

Wb

00

ff

White Balance End

** Caution **

Color Temperature : COOL, Medium, Warm. 
One of R Gain/G Gain/ B Gain should be kept on 0xC0, and
adjust other two lower than C0.
(when R/G/B Gain are all C0, it is the FULL Dynamic Range
of Module)

* Manual W/B process using adjusts Remote control.

• After enter Service Mode by pushing “ADJ” key,
• Enter White Balance by pushing “

G

” key at “6. White

Balance”.

* After done all adjustments, press “In-start” key and compare

Tool option and Area option value with its BOM, if it is
correctly same then unplug the AC cable. If it is not same,
then correct it same with BOM and unplug AC cable.
For correct it to the model’s module from factory Jig model.

* Push the “IN STOP” key after completing the function

inspection. And Mechanical Power Switch must be set
“ON”.

(Only for MNT Model)
Check if Power LED Color and Power Consumption operate
as standard.
• Set Input to RGB and connect D-sub cable to set.
• Measurement condition : 100 - 240 V, 50 / 60 Hz
• Confirm DPM operation at the state of screen without Signal.

• Connect D-sub Signal Cable to D-sub Jack.
• Write EDID Data to EEPROM(24C02) by using DDC2B

protocol.

• Check whether written EDID data is correct or not.
* For Service main Assembly, EDID have to be downloaded to

Insert Process in advance.

• Connect HDMI Signal Cable to HDMI Jack.
• Write EDID Data to EEPROM(24C02) by using DDC2B protocol.
• Check whether written EDID data is correct or not.
* For Service main Assembly, EDID have to be downloaded to

Insert Process in advance.

1) All Data : HEXA Value
2) Changeable Data :
*: Serial No : Controlled / Data:01
**: Month : Controlled / Data:00
***: Year : Controlled
****: Check sum

• After enter Service Mode by pushing “ADJ” key,
• Enter EDID D/L mode.
• Enter “START” by pushing “OK” key.

[Caution]
Never connect HDMI & D-sub Cable when EDID downloaded.

* Edid data and Model option download (RS232)

- 12 -

RS-232C COMMAND MIN

CENTER

MAX

[CMD ID DATA]

(DEFAULT)

Cool

Mid

Warm

Cool

Mid

Warm

R Gain

jg

Ja 

jd 

00

172

192

192

192

G Gain

jh

Jb

je

00

172

192

192

192

B Gain

ji

Jc 

jf

00

192

192

172

192

R Cut

64

64 

64

128

G Cut

64

64 

64

128

B Cut

64

64

64

128

White Balance

Color Temp.

R-Gain

G-Gain

B-Gain

R-Cut

G-Cut

B-Cut

Test-Pattern.

Reset

Cool

172

172

192

64

64

64

ON

To set

HDMI1
HDMI2
HDMI3
RGB

NG
NG
NG
NG

HDMI1
HDMI2
HDMI3
RGB

OK
OK
OK
OK

Item CMD1 CMD2 Data0

Download

A

A

0

0

When transfer the ‘Mode In’,

‘Mode In’

Carry the command.

Download

A

E

00 10 Automatically Download

(The use of a internal pattern)