42PC5D-ZB (CHASSIS:PD73A) - LG TV Service Manual (repair manual). Page 7

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6. EDID (The Extended Display
Identification Data)/ DDC (Display
Data Channel) download
6-1. Required Test Equipment
1) Adjusting PC with S/W for writing EDID Data.(S/W : EDID
TESTER Ver.2.5)
2) A Jig for EDID Download
3) Cable : Serial(9Pin or USB) to D-sub 15Pin cable, D-sub
15Pin cable, DVI to HDMI cable
6-2. Setting of device
6-3. Preparation for Adjustment
1) As above Fig. 2, Connect the Set, EDID Download Jig, PC
& Cable.
2) Turn on the PC & EDID Download Jig. And Execute the
S/W : EDID TESTER Ver,2.5.
3) Set up S/W option.
Repeat Number : 5
Device Address : A0
PageByte : 8
4) Power on the Set.
6-4. Sequence of Adjustment
- EDID Download
1) Init the data.
2) Load the EDID data.(Open File).
[Analog file] (for RGB)
[Digital file]  (for HDMI)
3) Set the S/W as below.
4) Push the “Write Data & Verify”button. And confirm “Yes”.
5) If the writing is finished, you will see the “OK” message.
6) If TV has two HDMI, you must download two times for
each HDMI.
- EDID DATA
1) Analog RGB.
=> Detail EDID Options are below(1, 2, 3, 4, 5)
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
(Fig. 2) Connection Diagram of DDC download
Open File
Open File
Model
Name
XXXX
Product ID
Product ID
EDID table
XXXX
Hex
XX
DEC
XX
XXXXX
Model Name
XXXXX
Hex Data
XXXXX
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2
3
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