Philips 248C3LSB/00, Service Manual

Page: 21 / 73

248C3L LCD 21
DDC Instructions
DDC Data Re-programming
In case the DDC data memory IC or main EEPROM which storage all factory settings were
replaced due to a defect, the serial numbers have to be re-programmed "Analog
DDC IC, Digital DDC IC & EEPROM".
It is advised to re-soldered DDC IC and main EEPROM 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
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.
Configuration and procedure
"PI-EDID" The software is provided by IMS to upgrade the firmware of CPU.
PI-EDID Tools is for the interface between "Parallel Port of PC" and "15 pin-D-SUB
connector of Monitor".
It is a windows-based program, which cannot be run in MS-DOS.
System and equipment requirements
1. An Pentium (or above) personal computer or compatible.
2. Microsoft operation system Windows 95/98/2000/XP and Port95NT.exe.
3. EDID Software "QEDID.exe"
4. ISP boardas shown in Fig. 1
And I2C Board Jump wire should follow J10 (short), J9 (open), J5/J6/ (1and 2 pin short)
J7/J8 (1 and 2 pin short)
Connected to print
cord and PC Connected to Display
Signal Cable
1
2
3
3
2
1
Fig.1