50PM4M-WA (CHASSIS:PM75A) - LG TV Service Manual (repair manual). Page 9

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10. EDID (The Extended Display
Identification Data)/ DDC (Display
Data Channel) download
* Caution
1) Use the proper signal cable for EDID Download.
- Analog EDID : Pin3 exists.
- Digital EDID : Pin3 exists.
2) Never connect HDMI & DVI-D & DVI-A Cable at the same
time.
3) Use the proper cables below for EDID Writing.
10-1. EDID Data
10-2. Data
1) Analog Block1(128Byte).
2) HDM(256Byte)
(1) Block1(128Byte).
(2) Block2(128Byte).
=> Detail EDID Options are below(
,
,
,
)
1. 
-> Product ID
2. 
-> Serial No :  Controlled on production line
3. 
-> Month, Year : Controlled on production line
ex) Week : '03'     =>  '03' 
Year   : '2006' =>  '10'
4.
-> Model Name(Hex):
5.
-> Checksum  : Changeable by total EDID data.
11. White Balance
* Note : Before White-balance, change input mode
Move to AV1 by using the FRONT-AV KEY on remote controller.
11-1. Test Equipment
(1) Color Analyzer (CA-100 / CH10.
(2) PC(for communication through RS-232C)
-> UART Baud rate : 115200.
(3) Pattern Generator(MSPG-925FA etc.)
Target Value(PSM:Standard, CSM:Normal).
=> Reference Value(Automatically fixed)
- Cold    : 11000K
±
1000K
- Warm :    7200K
±
1000K
Item
Manufacturer ID
Version
Revision
Condition
GSM
Digital : 1
Digital : 3
Hex Data
1E6D
01
03
Model 
Name
50PM4M-WA
RGB
(Block1)
A9
HDMI
(Block1)
C2
HDMI
(Block2)
6B
For RGB EDID
D-sub to D-sub
For HDMI EDID
DVI-D to HDMI or HDMI to HDMI
Model
Name
50PM4M-WA
Product ID
Product ID
EDID table
7BC3
7CC3
Dec
50043
50044
Hex
C37B
C37C
50043(A)
50044(D)
Model Name
50PM4M-WA 00 00 00 FC 00 35 30 50 4D 34 4D 2D 57 41 0A 20 20 20
- Before White-balance, the AV ADC should be done.(INPUT AV1)
- AV ADC(AV1) should be done before White-balance.
- System control RS-232 Host should be “PC” for adjustment.
- AV ADC(AV1) should be done before White-balance.
High Light 
High Light 
60 ± 20cd/m2(50XGA)
X   0.283 ± 0.002
Y   0.298 ± 0.002
9,300
°K 
± 500
°
K
Brightness
Color Coordinate
Color Temperature
White balance
MSPG925FA
216Level(85IRE)
Full screen pattern
PAL(AV1)
Model : 202
*Pal Video
Page of 25
Display

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