HP L1506 Service Manual page 40

"Data compare error
appear
power resource and the connection of the signal cable, then return to step 3 by pressing ENTER and re-do it.
5.You can exit the program by pressing Ctrl plus C, then cut the signal cable and the power.
6.The following picture is taking Acer AL1721 EDID for example.
Notes:
1、Make sure the system time of PC is in accordance with the real time before writing.
2、The schematic picture is just as an example for description, the exact content of the DDC is dependent on the
serial number of the BARCORD of this model.
3、Data DDC-writing needs a transfer interface.
Instruction：DDC-writing needs 4 files:
1. Barcode.txt (Supply Barcode length and flow number)
2. *.EXE (DDC-writing program)
3. WR.bat
DDC-writing)
4. w.dat The content with 128 bits of DDC
！" to indicate failure if the DDC-writing doesn't perform well. Please check the
(Group order file for cycling utilization of *EXE, and dual-click this file when perform
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HP L1506 Service Manual