C42PW120-WA (CHASSIS:PC21A) - LG TV Service Manual (repair manual). Page 7

Read LG C42PW120-WA (CHASSIS:PC21A) Service Manual online

- 7 -
5.3.  EDID(The Extended Display Identification 
Data)/ DDC(Display Data Channel)
■ Summary
●  It is established in VESA, for communication between PC 
and  Monitor  without  order  from  user  for  building  user 
condition.  It  helps  to  make  easily  use  realize  “Plug  and 
Play” function. 
● For EDID data write, we use DDC2B protocol.
- 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  the  user 
downloading .
- Use the proper cables below for EDID Writing
* Edid data and Model option download(RS232)
- Manual Download 
■ Write HDMI EDID data
● Using instruments
-  Jig.  (PC  Serial  to  D-Sub  connection)  for  PC,  DDC 
adjustment.
- S/W for DDC recording (EDID data write and read)
- D-sub jack
- Additional HDMI cable connection Jig.
● Preparing and setting.
-  Set instruments and Jig. Like pic.5), then turn on PC 
and Jig. 
- Operate DDC write S/W (EDID write & read)
- It will operate in the DOS mode.
- EDID data 
- HDMI EDID table(HD)
- Display Port EDID table(HD)
- DVI EDID table(HD)
< For write EDID data, setting Jig and another instruments >
Page of 33
Display

Click on the first or last page to see other C42PW120-WA (CHASSIS:PC21A) service manuals if exist.