Ddc Instructions And Ddc Data; Pin Assignment - Philips 170C4FS/00 Service Manual

X 20 170C4/N4
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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, & 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.
System and equipment requirements
1. An i486 (or above) personal computer or compatible.
2. Microsoft operation system Windows 95/98 .
Y ou have t o Install the EDID_PORT_Tool under Win2000/XP . As
Fig. 1 .
A. Cody the "UserPort.sys" to C:\WINNT\system32\drivers(win2000)
C:\WINDOWS\system32\drivers(winXP)
B. Running " io.exe" everytime, Before you start to programming
edid data .
3. EDID45.EXE program .
4. A/D Alignment kits (3138 106 10079):
inclusion : a. Alignment box x1 (as Fig. 2)
Fig. 2 Fig. 2
b. Printer cable x1
c. (D-Sub) to (D-Sub) cable x1
Note: The EDID45.EXE is a windows-based program, which cannot
be run in MS-DOS.
DDC Instructions
Note: The alignment box has already build-in a batteries socket for
".
Power
indicator
Fig. 1 Fig. 1

Pin assignment

A. 15-pin D-Sub Connector
Pin No.
1
2
3
4
5
6
7
8
using batteries (5V) 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.
To Printer port
DC 5V
To Monitor
D-sub cable
10
Assignment
R in
G in , Syne. on green
B in
Ground
Ground
Red video ground
Green video ground
Blue video ground
Fig. 3 Fig. 3
1
5
6
11
15
Pin No. Assignment
9 DDC +5V or +3.3V
10 Ground-
Cable Detect
Ground
11
12
Serial data line(SDA)
H.Sync / H=V
13
14 V.Sync
15
Data clock line(SCL)