Ddc Instructions; Pin Assignment - Philips V50 109B5 Service Manual

V50 109B5
14
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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
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 the monitor : Standard Version 3.0
Structure Version 1.2
2. System and equipment requirements
1. An i486 (or above) personal computer or compatible.
2. Microsoft operation system Windows 95/98.
3. EDID301.EXE program (3138 106 10103) shown as Fig. 1
4. Software DDC Alignment kits (4822 310 11184) shown as Fig. 2.
The kit contents: a. Alignment box x1
b. Printer cable
c. D-Sub cable
Note: The EDID301.EXE (Release Version 1.58, 20000818)is a
windows-based program, which cannot be run in MS-DOS.
EDID301.EXE
Ver:1.58
Figure 1 Diskette with EDID301.EXE
DC 8V~12V
To Monitor
Video Card Video Card
Fig. 2 Alignment Kits

DDC Instructions

x1
x1
Power indicator
To Printer

3. Pin assignment

A. 15-pin D-Sub Connector
The 15-pin D-sub connector (male) of the signal cable
on the 3rd row for DDC feature :
1
6
11
Assignment
Pin No.
1
Red video input
Green video input
2
Blue video input
3
4 Ground
5 for selftest(PC ground)
6 Red video ground
Green video ground
7
Blue video ground
8
5
10
15
Assignment
Pin No.
9 DDC 5V
10 Sync. Ground
Ground
11
12
Bi-directional data(SDA)
H.Sync
13
14
V.Sync(VCLK)
15
Data clock line(SCL)