Ddc Instructions - Philips HP L1530R Service Manual

General
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.
DDC EDID structure
For Analog interface: Standard Version 3.0
Structure Version 1.2
For Digital inferface: Standard Version 3.0
Structure Version 1.3
System and equipment requirements
1. An i486 (or above) personal computer or compatible.
2. Microsoft operation system Windows 95/98.
edid46Release For writing block 4
3. EDID301.EXE program (3138 106 10103) as shown in Fig. 1
4. A/D Alignment kits (3138 106 10079):
inclusion : a. Alignment box x1 (as Fig. 2)
b. Printer cable x1
c. (D-Sub) to (D-Sub) cable x1
d. (DVI-D) to (D-Sub) cable x1 (as Fig. 3)
Note: The EDID301.EXE (Release Version 1.58 20000818)is a
windows-based program, which cannot be run in MS-DOS.
Fig.1
Diskette with EDID301.EXE
edid46Release For writing block 4

DDC Instructions

Fig.2
Fig.3
(DVI-D) to (D-Sub) cable
Fig.4
Note: The alignment box has already build-in a batteries socket for
Using batteries (9V) as power source. Pull out the socket by
remove four screws at the rear of box. Please do not forget that
remove batteries after programming. The energy of batteries can
only drive circuits for a short period of time.
A/D Alignment Kits - Digital connection
Pin assignment
A. 15-pin D-Sub Connector
B. Input DVI -D Connector pin
25
HP L1530 HP L2025
19
HP L2025 HP L2025
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Fig.5
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