Ddc Instruction - BenQ G922HD Service Manual

18.5" LCD Color Monitor

DDC instruction

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. When does the part, need the tools as follow:
a. An i486 (or above) personal computer or compatible.
b. Microsoft operation system Windows 95/98/2000/XP.
c. "PORT95NT.exe, TPVDDC.exe" program.
d. OSD SN BOARD (x1), Printer cable(x1), VGA cable (x1), 12V DC power source
2. Install the "PORT95NT.EXE", and restart the computer.
The process of installing "PORT95NT" has been specified in, so it will not be specified again. If you have any
problem, please read it.
3. Connect the DDC Board as follow:
When you write digital
EDID, Connect this port
When you write analog
EDID, Connect this port
15
BenQ G922HD
Connect to
the PC LPT
12V DC Input