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Service Manual
9. DDC Instruction
9.1 General
DDC Data Re-programming
In case the main EEPROM with Software DDC which store all factory settings were replaced because a defect
repaired monitor' the serial numbers have to be re-programmed.
It is advised to re- soldered the main EEPROM with Software DDC from the old board onto the new board if
circuit board have been replaced, in this case the DDC data does not need to be re-programmed.
Additional information about DDC (Display Data Channel) may be obtained from Video Electronics Standards
Association (VESA). Extended Display Identification Data (EDID) information may be also obtained from
VESA.
1.
An i486 (or above) personal computer or compatible.
2.
Microsoft operation system Windows 95/98/2000/XP.
3.
"PORT95NT.exe, WinDDC_ setup" program.
4.
Software OSD SN Alignment kits
The kit contents:
a) OSD SN BOARD x1
b) Printer cablex1
c) VGA cable x1
d) Digital cable x1
e) 12V DC power source
9.2 Connect the DDC board
When you write analog
EDID, Connect this port
to the ASUS VH236H'
VGA port
12V Input
50
ASUS VH236H&VH232H
Connect to the
PC LPT
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