Samsung Syncmaster 203b Service Manual

Memo
10 Operating Instructions and Installation
10-6
 

11 Disassembly and Reassembly
11-1
11 Disassembly and Reassembly
This section of the service manual describes the disassembly and reassembly procedures for the 203B TFT-LCD monitors.
WARNING: This monitor contains electrostatically sensitive devices. Use caution when handling
these components.
11-1 Disassembly
Cautions: 1.Please the power off, before disassemble the monitor.
2.Please do not use other jig except given jig when disassemble.
3.Please disassemble based on given process as below.
4.Back cover...

11 Disassembly and Reassembly
11-2
Description Picture Description
3. Remove 1 screws from Lamp shield
4. Disconnect a FUNCTION Wire 
from PCB ASSY.
5. Disconnect  4  Lamp Wire and  Wire.
6. Disconnect a  LVDS Wire from  Panel.
 

11  Disassembly and Reassembly
11-3
7. Remove 4 hexa screws from PBA board  which 
is connected PCB bracket.
8. Remove 4 screws from PBA board  and pull up 
the PBA from the bracket as picture.
9. Totally disassembled PBA board.
Description Picture Description
11-2 Reassembly
Reassembly procedures are in the reverse order of disassembly procedures.
 

Memo
11 Disassembly and Reassembly
11-4
 

13 Circuit Descriptions
13-1
13 Circuit Descriptions
13-1 Block description
 

13 Circuit Descriptions
13-2
13-2 Block operating
No Feature Description
Scaler Integrate ADC and TMDS, Scaling part.
DDR memory Save frame information that SCALER needed .  
Microcontroller. 
Micom control all function of monitor.Scaler 
DDR 
MEMORY
MICOM 1
2
3
Analog signal from the PC is changed to digital signal using the A/D converter integrated in scaler(MST6281).
Scaler scale this digital singal to optimal signal fit to the panel and encode the LVDS signal. 
This LVDS signla enter the panel to...

- TFT-LCD
(Thin film Transistor Liquid Crystal Display)
ADC(Analog to Digital Converter) 
This is a circuit that converts from analog signal to
digital signals.
- PLL(Phase Locked Loop)
During progressing ADC, Device makes clock 
synchronizing HSYNC with Video clock  
- Inverter
Device that supplies Power to LCD panel lamp.
This device generates about 1,500~2,000V.
- SMPS(Switching Mode Power Supply)
Switching Mode Power supply. This design 
technology is used to step up/down the input
power by switching...

14 Reference Infomation
14-2
- Dot Pitch
The image on a monitor is composed of red, green
and blue dots. The closer the dots, the higher the
resolution. The distance between two dots of the
same color is called the Dot Pitch. Unit: mm
- Vertical Frequency
The screen must be redrawn several times per
second in order to create and display an image for
the user. The frequency of this repetition per 
second is called Vertical Frequency or Refresh
Rate. Unit: Hz 
Example: If the same light repeats itself 60...

- Connecting the Monitor
14 Reference Infomation
14-3
1.  Connect the DC adapter for your monitor to the power port on the back of the monitor. 
Plug the power cord for the monitor into a nearby outlet. 
2-1. Using the D-sub (Analog) connector on the video card. 
Connect the signal cable to the 15-pin, D-sub connector on the back of your monitor.
2-2. Using the DVI (Digital) connector on the video card.
Connect the DVI cable to the DVI port on the back of your monitor.
2-3. Connected to a Macintosh....