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