Samsung 305T - SyncMaster - 30" LCD Monitor User manual

SERVICEManual
LCD Monitor Fashion Feature
LCD-Monitor
Chassis LHU30BS
Model 305TPLUS
- Back Side cable management
- Silm / Narrow Design
- PCB: 2 Layer, 150mm x 100mm
- Connectivity: DVI-D, USB 2.0 (1up, 4down)
- Power consumption: 130W
- Built in power supply

Samsung Electronics Co.,Ltd.
416, Maetan-3Dong, Yeongtong-Gu, Suwon City,
Gyeonggi-Do, Korea, 443-742
Printed in Korea
P/N : BN82-00169A-01
URL : http://itself.sec.samsung.co.kr/
-This Service Manual is a property of Samsung
Electronics Co., Ltd.
Any unauthorized use of Manual can be punished
under applicable International and/or domestic
law.

3 Alignments and Adjustments
3-1
3-1 Required Equipment
The following equipment is necessary for adjusting the monitor:
Computer with Windows 95, Windows 98, or Windows NT.
 MTI-2055 DDC MANAGER JIG
3-2 DDC EDID Data Input
1. Input DDC EDID data when replacing AD PCB.
2. Receive/Download the proper DDC file for the model from HQ quality control department.
Install the below jig (Figure 1) and enter the data.
3 Alignments and Adjustments
This section of the service manual explains how to use the RS232 JIG.
This function is needed for AD board change and program memory (IC200) change.
M
TI-2
055
DDC Mana
g
er
Parallel Connector
(25P Cable) Connect Monitor
(Signal Cable)
Figure 1.
3-3 Hidden Key list

3 Alignments and Adjustments
3-2
3-4 EDID Installation with Dos Program
1.Execute "DDC21.exe"±
2.Click "LOAD FILE"±
3.File Name "305T.DDC"
4. Click "WRITE EEPROM"±
Confirm the "OK" Sign
Error Massage: Check the Signal Cable
or Interface Board

3 Alignments and Adjustments
3-3
3-5 EDID Installation with Windows Program
1. Execute "WinDDC.exe"
2. Click "Sys Config"±
Select "Station : Write station".
Check "Serial No and Week : Don't change"±
Click "Save"±
3. Click "Open" icon.
Select "Connected Port #1" and Next "OK".
* File Name - 305T.DDC
Press enter key on your keyboard.
4. Confirm the "DDC OK".
- After Replacing the Main Board
-EDID Installation (Analog and Digital)
-Factory Reset(Using Power key)
During Power off, press Power key for 5 seconds.
With 1 beep sound, Factory Reset executes.

3 Alignments and Adjustments
3-4
Memo

7 Block Diagrams
7-1
7 Block Diagram
7-1 Block Diagram (Main)

7 Block Diagrams
7-2
7-2 Block Diagram (SMPS)

13 Circuit Descriptions
13-1
13 Circuit Descriptions
13-1 BLOCK discription (MAIN)

13 Circuit Descriptions
13-2
No BLOCK DESCRIPTION NAME
USB2504
SI4435
CONNECTOR-DVI
WT61P4
USB_DN
USB_UP
LVDS CONNECTOR
IC-MICROCONTROLLER,PLCC,44P,16Bit
IC-USC, USB2504,8Bit,TQFP,64P
FET-SILICON, SI4435DY,P,-30V,+-8.0A,
0.014ohm,2.5W,SO-8
CN_DSUB_24_3R_G2, CONNECTOR-DVI,
24P,3R,FEMALE,ANGLE,AUF
JACK_USB_08_G4, JACK-USB, 4P/2C,AUF,
BLK,ANGLE,A TYPE
JACK_USB_04_G2, JACK-USB, 4P/1C,AU,IVR,
ANGLE,B TYPE
CN_SMD_S_030, CONNECTOR-HEADER,
BOX,30P,1R,1.25mm,SMD-A,Sn+Pb,IVR
MICOM
USB
DC/DC
DVI-D INPUT
USB PORT
USB PORT
SIGNAL
CONNECTOR
1
2
3
4
5
6
7
DATA CONNECTOR
CN_S_015_G2, CONNECTOR-HEADER,
BOX,15P,1R,1.25mm,SMD-A,SnPb,IVR
DATA
CONNECTOR
8
POWER CONNECTOR
CN_S_016, HEADER-BOARD TO CABLE,
BOX,16P,1R,2mm,ANGLE,SN,IVORY
POWER
CONNECTOR
9
FUNCTION
CN_S_006_G2, CONNECTOR-HEADER,
BOX,6P,1R,1.25mm,SMD-A,SnPb,IVR
FUNCTION
CONNECTOR
10
INVERTER
CONNECTOR
CN_S_014,HEADER-BOARD TO CABLE,
BOX,14P,1R,2mm,ANGLE,SN,IVORY
inverter
connector
11