AOC VS19X Series Service Manual page 43

11.3 Steps for writing DDC：
1. Employ PC, and connect the DDC-writing instrument and the instrument that is ready for writing into DDC to the
power of 12v. Connect the signal cable of the latter to D-USB or DVI of DDC-writing instrument (The data-writing of
monitor needs transfer-interface) and link the DDC-writing instrument with PC through printer interface. (See the
schematic picture below)
Connection of DDC-writing instrument for VGA.
2. Seek the document with the expanded name of .BAT in DDC file of this model. It appears the indication of "Input
Serial No.：＂after dual-click the document to be ready for DDC-writing.
3.Input the serial number of the product (For instance: AOC LM729 is 13 bits), then press ENTER to start writing
4.Check the indication of DDC-writing program at the end. When you see the picture as the schematic picture above, the
"Data compare OK!" means being written well and that's the end. Please check if the Manufacturer Name, Vendor
Assigned Code, Monitor Name, Serial Number, Week of Manufacture, Year of Manufacture are right. It will appear
"Data compare error
and the connection of the signal cable, then return to step 3 by pressing ENTER and re-do it.
！" to indicate failure if the DDC-writing doesn't perform well. Please check the power resource
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HP VS19X Service Manual