Philips 150X3M, Service Manual

Page: 23 / 92

23 150X3M LCD
DDC Instructions
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General
Pin assignment
1
10
6
11
15
5
Assignment
Assignment
Pin No.
Pin No.
Ground
No Connected
Ground
Blue video input
2
7
6
8
4
5
3
1
9
12
11
14
13
15
10
Red video ground
Blue video ground
Green video ground
+5V
Ground
Data clock line(SCL)
V.Sync(VCLK for DDC)
H.Sync
Serial data line(SDA)
Green video input
Red video input
A. 15-pin D-Sub Connector
B. DVI-D Connector
16
24
8
1
9
17
Pin No. Assignment Pin No. Assignment
1 TMDS Data 2- 13 TMDS Data 3+
2 TMDS Data 2+ 14 +5V Power
3 TMDS Data 2/4 Shield 15 Ground (+5V)
4 TMDS Data 4- 16 Hot Plug Detect
5 TMDS Data 4+ 17 TMDS Data 0-
6 DDC Clock 18 TMDS Data 0+
7 DDC Data 19 TMDS Data 0/5 Shield
8 No connect 20 TMDS Data 5-
9 TMDS Data 1- 21 TMDS Data 5+
10 TMDS Data 1+ 22 TMDS Clock Shield
11 TMDS Data 1/3 Shield 23 TMDS Clock+
12 TMDS Data 3- 24 TMDS Clock-
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.
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.
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.
Diskette with EDID301.EXE
EDID301.EXE
Ver:1.58
(DVI-D) to (D-Sub) cable
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.
To Monitor
DC 8V~12V
Video Card
To Printer
Power
indicator
A/D Alignment Kits - Analog connection A/D Alignment Kits - Analog connection
A/D Alignment Kits - Digital connection A/D Alignment Kits - Digital connection
Fig. 2
Fig. 1 Fig. 1
Fig. 3 Fig. 3
To Monitor
(Digital port)
DC 8V~12V
To Printer
Power
indicator
Configuration and procedure
There are threeips contained serial number on the circuit board,
Analog DDC IC, Digital DDC IC and main EEPROM which
storage all factory settings. Following descriptions are the
connection and procedure for Analog DDC IC and Digital DDC
IC, the main EEPROM can be re-programmed along with
Analog IC by enable factory memory data write function on the
DDC program (EDID301.EXE).
Initialize alignment box
In order to avoid that monitor entering power saving mode due to
sync will cut off by alignment box, it is necessary to initialize
alignment box before running programming software (EDID301.EXE).
Following steps show you the procedures and connection.