Philips HP L2035, Руководство по обслуживанию

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DDC Instructions
General
Pin assignment
A. 15-pin D-Sub Connector
B. DVI-D Connector
DDC Data Re-programming
Additional information
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 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
1. An i486 (or above) personal computer or compatible.
2. Microsoft operation system Windows 95/98.
4. A/D Alignment kits (3138 106 10079):
inclusion :
a. Alignment box x1 (as Fig. 2)
System and equipment requirements
3. EDID301.EXE program (3138 106 10103) as shown in Fig. 1
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 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. 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 (7202), Digital DDC IC (7201) and main
EEPROM (7362) 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.
PIN No. SIGNAL
1 Red
2 Green/ SOG
3 Blue
4 Sense (GND)
5 Cable detect
6 Red GND
7 Green GND
8 Blue GND
9 +5V
10 Sync GND
11 Sense (GND)
12 Bi-directional data
13 H/H+V sync
14 V-sync
15 Data clock
Pin No. Description
1 TMDS data2-
2 TMDS data2+
3 TMDS data2 shield
4 NC
5 NC
6 DDC clock
7 DDC data
8 Analog V-sync
9 TMDS data1-
10 TMDS data1+
11 TMDS data1 shield
12 NC
13 NC
14 +5V
15 Ground(return for +5V and H/V-sync)
16 Hot plug detect
17 TMDS data0-
18 TMDS data0+
19 TMDS data0 shield
20 NC
21 NC
22 TMDS clock shield
23 TMDS clock+
24 TMDS clock-
C1 Analog R
C2 Analog G
C3 Analog B
C4 Analog H-sync
C5 Analog GND (Analog R, G, B return)
HP L2025
HP L2035 16