50PG20R-TA (CHASSIS:PP81A) - LG TV Service Manual (repair manual). Page 10

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7-5. Preparation for Adjustment
(1)  As  above  Fig.  3,  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 the S/W option 
Repeat Number : 5
Device Address : A0
PageByte : 8
(4) Power on the Set
1) Sequence of Adjustment
1. DDC data of Analog-RGB
(1) Init the data 
(2) Load the EDID data.(Open File).
[Analog - RGB    : PP81A_RGB.ANA]
[Digital  - HDMI1 : PP81A_HDMI1.DVI]
[Digital  - HDMI2 : PP81A_HDMI2.DVI]
[Digital  - HDMI3 : PP81A_HDMI3.DVI]
(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. 
8. HDCP
(High-Bandwidth Digital Contents Protection)
(1) Connect D-sub Signal Cable to D-Sub Jack
(2) Input HDCP key with HDCP-key- in-program
(3) HDCP  Key  value  is  stored  on  Main  M-STAR
IC(LGE6891DD)  which  is  0x80~0x90  addresses  of
0x00~0x01  page(EEPROM  MAP  PAGE0~PAGE1  /
START :A080)
(4) Play the Equipment(DVD Player) included HDCP Key and
confirm  whether  picture  is  displayed  or  not  of  using  DVD
Player.
(5) HDCP Key value is different among the sets
Open File
Open File
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