Samsung 205BW - Manuals

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 LHA20WS TFT-LCD monitors. WARNING: This monitor contains electrostatically sensitive devices. Use caution when handling these components. 11...

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

- TFT-LCD (Thin film Transistor Liquid Crystal Display) ADC(Analog to Digital Converter) This is a circuit that converts from analog signal todigital signals. - PLL(Phase Locked Loop) During progressing ADC, Device makes clock synchronizing HSYNC with Video clock - Inverter Device that supplies Powe...

14 Reference Infomation 14-2 - Dot Pitch The image on a monitor is composed of red, greenand blue dots. The closer the dots, the higher theresolution. The distance between two dots of thesame color is called the 'Dot Pitch'. Unit: mm - Vertical Frequency The screen must be redrawn several times pers...

- 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, ...

14 Reference Infomation 14-6 14-4 Preset Timing Modes Sync Polarity (H/V) Pixel Clock (MHz) Vertical Frequency (Hz) Horizontal Frequency (kHz) Display Mode MAC, 640 x 480 35.000 66.667 30.240 -/- MAC, 832 x 624 49.726 74.551 57.284 -/- IBM, 640 x 350 31.469 70.086 25.175 +/- IBM, 640 x 480 31.469 59...

14-5 Panel Description 14 Reference Infomation 14-7 SEC LT140X1-002 BN07-00004A SA BN68-00239H - SEC LT150XS-L01 BN07-00009A SB - SEC LT150XS-L01-B BN07-00022A SC - SEC LTM150XS-L02 BN07-00005A SD - SEC LT181E2-132 BN07-00001A SE - SEC LT150XS-T01 BN07-00010A SF - SEC LTM181E3-132 BN07-00019A SG - S...

4 Troubleshooting 4-1 4 Troubleshooting 4-1 No Power Does proper DC 14 V appear at Pin 1,2,5 of CN600? Check the IP Board. There is no light in the power indicator. Check IC200 and IC301. Yes No Does proper DC 5V appear at Output of IC302? Check the IC302 Yes No Does proper DC 3.3V appear at Pin 3 o...

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, Windows NT, Windows 2000, or Windows XP. MTI-2031 DDC MANAGER JIG 3-2 Automatic Color Adjustment To Analog video, In 16gray or any pattern usi...

3 Alignments and Adjustments 3-2 3-4 Service Function Spec. 3-4-1 How to Display Service Function OSD 1. After setting both brightness and contrast to '0' push the 'enter' button more than 5 seconds. 2. service function appear as below. 3-4-2 How to Control Service Function OSD 1. Monitor On Time : ...

3 Alignments and Adjustments 3-3 3-5 Hidden Key list No 1. Hidden Service Function -. After setting brightness and contrast '0' push the "Enter" button more than 5 seconds. -. Service Function appear. 2. Factory Reset -. While Menu is opened(any menu), press "enter" key over 5 second...

3 Alignments and Adjustments 3-5 3-7 Execution Items after replacing the main board After Replacing the Maing Board 1. Auto Calibration 2. EDID installation(Analog and Digital) 3. Factory Reset 5: Input a monitor serial number and push the enter key. After Analog input, Please do # 2 ~ 5 when digita...

6 Electrical Parts List - You can search for updated part codes through ITSELF web site. URL : http://itself.sec.samsung.co.kr/ 6-1 LS20HAWCSZ/EDC Parts List 6 Electrical Parts List 6-1 Level Loc. No. Code No. Description & Specification Q'ty SA/SNA LS20HAWCSZ/EDC 205BW,WPA1/S20B2-LHA,20,LCD-MO,...

1 Precautions 1-1 1-1-1 Warnings 1. For continued safety, do not attempt to modify the circuitboard. 2. Disconnect the AC power and DC power jack beforeservicing. 1-1-2 Servicing the LCD Monitor 1. When servicing the LCD Monitor, Disconnect the AC line cord from the AC outlet. 2. It is essential tha...

1 Precautions 1-2 1-2-1 General Servicing Precautions 1. Always unplug the unit’s AC power cord from the ACpower source and disconnect the DC Power Jack beforeattempting to:(a) remove or reinstall any component or assembly, (b)disconnect PCB plugs or connectors, (c) connect a testcomponent in parall...

1 Precautions 1-3 1-4 Installation Precautions 1. For safety reasons, more than two people arerequired for carrying the product. 2. Keep the power cord away from any heat emitting devices, as a melted covering may cause fire or electric shock. 3. Do not place the product in areas with poor ventilati...