LG Electronics 42LT640H-ZA EDID data, DDC EDID Write RGB 128Byte, DDC EDID Write HDMI 256Byte

▪Auto adjustment Map(using RS-232C to USB cable) RS-232C COMMAND

[CMD ID		DATA]
Wb	00	00	White Balance Start
Wb	00	ff	White Balance End
	RS-232C COMMAND					CENTER
	[CMD ID DATA]			MIN		(DEFAULT)		MAX
	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

4.4.EDID data

(1)All Data : HEXA Value

(2)Changeable Data :

*: Serial No : Controlled / Data:01

**: Month : Controlled / Data:00

***:Year : Controlled

****:Check sum

4.4.1. Auto Download

■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.

B Cut 64 64 64 128

<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 adjust Remote control.

▪After enter Service Mode by pushing "ADJ" key,

▪Enter White Balance by pushing "►" key at "8. White Balance".

lGhkqz{G

WUG{––“Gv—›–•XG

XUG{––“Gv—›–•YG

YUG{––“Gv—›–•ZG

ZUG{––“Gv—›–•[G [UG{––“Gv—›–•\G \UG{––“Gv—›–•Gj–””Œ™Šˆ“G ]UGj–œ•›™Gn™–œ—G ^UGh™ŒˆGv—›–•G _UGhkjGjˆ“‰™ˆ›–•G `UG~›ŒGiˆ“ˆ•ŠŒG

XWUGXWGw–•›G~iG

XXUG{Œš›Gwˆ››Œ™•G

XYGlkpkGkVsG

XZ zœ‰GiVjG

X[UGlŸ›UGp•—œ›Gh‹‘œš›G

	lkpkGkVsG
oktpXG	unG
oktpYG	unG
oktpZG	unG
yniG	unG
z›ˆ™›G	yŒšŒ›G
	lkpkGkVsG
oktpXG	vrG
oktpYG	vrG
oktpZG	vrG
yniG	vrG
z›ˆ™›G	yŒšŒ›G

	EZ ADJUST	White Balance
0. Tool Option1		Color Temp.	Cool
1. Tool Option2		R-Gain	172
2. Tool Option3		G-Gain	172
3. Tool Option4		B-Gain	192
4. Tool Option5		R-Cut	64
5.	Country Group	G-Cut	64
6. Area Option		B-Cut	64
7. ADC Calibration		Test-Pattern	ON
8.	White Balance	► Backlight	100
9.	10 Point WB	Reset	To Set

10.Test Pattern

11.EDID D/L

12.Sub B/C

13.Touch Sensitivity Setting

* After you finished 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”.

4.2.DDC EDID Write (RGB 128Byte )

■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.

4.3DDC EDID Write (HDMI 256Byte)

■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.

* EDID data and Model option download (RS232)

NO	Item	CMD 1	CMD 2	Data 0
Enter download	Download	A	A	0	0	When transfer the ‘Mode
MODE	‘Mode In’					In’, Carry the command.
EDID data and						Automatically download
Model option	Download	A	E	00	10	(The use of a internal
download						data)

4.4.2. Manual Download

<Caution>

(1)Use the proper signal cable for EDID Download

-Analog EDID : Pin3 exists

-Digital EDID : Pin3 exists

(2)Never connect HDMI & D-sub Cable at the same time.

(3)Use the proper cables below for EDID Writing.

(4)Download HDMI1, HDMI2 separately because HDMI1 is different from HDMI2.

For Analog	For HDMI EDID
D-sub to D-sub	DVI-D to HDMI or HDMI to HDMI

No.	Item	Condition	Hex Data
1	Manufacturer ID	GSM	1E6D
2	Version	Digital : 1	01
3	Revision	Digital : 3	03

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