LCD-Monitor Chassis LS21BRBS Model 214T SERVICE Manual LCD Monitor Fashion Feature - Applying MFM UI - Applying Magic Color Pro - Applying HDCP / PIP - Supporting Magic Tune 4.0 - Supporting Analog / Digital / Video / S-video...
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Samsung Electronics Co.,Ltd. -This Service Manual is a property of Samsung 416, Maetan-3Dong, Yeongtong-Gu, Suwon City, Electronics Co., Ltd. Gyeonggi-Do, Korea, 443-742 Any unauthorized use of Manual can be punished Printed in Korea under applicable International and/or domestic P/N : BN82-00133T-00 law.
1 Precautions 1 Precautions Follow these safety, servicing and ESD precautions to prevent damage and to protect against potential hazards such as electrical shock. 1-1 Safety Precautions 1-1-1 Warnings For continued safety, do not attempt to modify the circuit board. Disconnect the AC power and DC power jack before servicing.
1 Precautions 1-2 Servicing Precautions WARNING: An electrolytic capacitor installed with the wrong polarity might explode. Caution: Before servicing units covered by this service manual, read and follow the Safety Precautions section of this manual. Note: If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions, always follow the safety precautions.
1 Precautions 1-4 Installation Precautions 1. For safety reasons, more than two people are 6. Keep the antenna far away from any high-voltage required for carrying the product. cables and install it firmly. Contact with the highvoltage cable or the antenna falling over may 2.
2 Product Specifications 2 Product Specifications 2-1 Fashion Feature - Support Analog, Digital, Video, S-Video - Improved Response Time by Adopting 16ms - Support Magic Color Pro Magic Color, Color Tone, Gamma, 6-Color, Color Weakness - Support PIP when the sources are Anaolg and Digital - Magic Bright : 4steps used Test, Internet, Entertain.
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2 Product Specifications 2-3 LS21BRBS feature Feature Feature Operating method If Brahms turns on in some resolution for the first time, it can execute Auto Auto Auto adjustment automatically for the high Quality Auto Power Brahms can check the change of Source on/off Automatically and change the source to the active Input Brahms supports Wall mount...
3 Alignments and Adjustments 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. 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.
3 Alignments and Adjustments 3-6 Service Function Spec. 3-6-1 How to Display Service Function OSD 1. The OSD is displayed just like in 3-2. 2. To exit the service function, press the POWER key and restart the Monitor. Figure 2. The example of service function OSD 3-6-2 How to Control Service Function OSD Use the buttons to select an item that you want and press the Enter button.
3 Alignments and Adjustments 3-8 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 - SM214TA1.DDC : Analog - SM214TD1.DDC : Digital Press enter key on your keyboard.
4 Troubleshooting 4 Troubleshooting Notes: 1. Before troubleshooting, setup the PC's display as below. - Resolution: 1600 x 1200 - H-frequency: 75 kHz - V-frequency: 60 Hz 2. If no picture appears, make sure the power cord is correctly connected. 3.
4 Troubleshooting 4-2 No Video (ANALOG) Check signal cable connection and power. X201 oscillate properly? Replace or check related circuit. Is there R, G, B input at Check input part. R104, R105 and R106? Is there Hsync, Vsync waveform Check input part. at R112, R113? Is there Hsync, Vsync waveform Check IC201 and related circuit.
4 Troubleshooting 4-3 No Video (DIGITAL) Check signal cable connection and power. Replace or check related circuit. X201 oscillate properly? Is there input data at Check input part. R133, R134, R135, R136, R137 and R138? Is there waveform Check input part. at R139, R140? Is there R, G, B input at R134, Check Panel Cable.
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4 Troubleshooting 4-4 No Picture (Video Signal) Does a signal appear at Check CN103 and related circuit. Pin 3 of CN103? Does a signal appear at Check IC402 and related circuit. Pin 38 of IC402? Does a signal appear at Pin 234~237 and 241~244 Check IC201 and related circuit.
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4 Troubleshooting 4-5 No Picture (S-Video Signal) Does a signal appear at Check CN104 and related circuit. Pin 4 and 5 of CN104? Does a signal appear at Check IC402 and related circuit. Pin 36 and 42 of IC402? Does a signal appear at Pin 234~237 and 241~244 Check IC201 and related circuit.
5 Exploded View & Parts List 5 Exploded View and Parts List -You can search for updated part codes through ITSELF web site. URL : http://itself. sec. samsung.co.kr M0001 M0215 M0107 M0112 M0020 M0002 M0174 M0003...
10 Operating Instructions and Installation 10 Operating Instructions and Installation 10-1 Front 1. MENU button [ 2) Entertain : High brightness For watching motion - Opens the OSD menu. pictures such as a DVD or Video CD. Also use to exit the OSD menu or return to the previous menu.
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10 Operating Instructions and Installation 4) Custom Select this mode when you want to 5. AUTO button adjust the image according to your preferences. (Available in analog mode only) - When the 'AUTO' button is pressed, the Auto 3. Brightness button [ Adjustment screen appears as shown in the - When OSD is not on the screen, push the button animated screen on the center.
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10 Operating Instructions and Installation DVI port (Source : Digital) : Connect the DVI cable to the DVI port on the back of your monitor. D-sub 15-pin port :Connect the signal cable to the 15-pin, D-sub connector on the back of your monitor. VIDEO / S-VIDEO - VIDEO : External device (video) input terminal...
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10 Operating Instructions and Installation - Pivot Stand - Stand Height Adjustment 1. Press the top side of the stand and then push the button at the rear bottom of the stand. 2. You can adjust the stand height using this button. When you are using a stand height as maximum , it will go down a little bit from spring elasticity.
10 Operating Instructions and Installation 10-3 Using the Stand 10-3-1 Removing the base 1. Turn off your monitor and unplug its power cord. 2. Lay the LCD monitor face-down on a flat surface with a cushion beneath it to protect the screen. 3.
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10 Operating Instructions and Installation A. Monitor B. Mounting interface pad 1. Turn off your monitor and unplug its power cord. 2. Lay the LCD monitor face-down on a flat surface with a cushion beneath it to protect the screen. 3.
11 Disassembly and Reassembly 11 Disassembly and Reassembly This section of the service manual describes the disassembly and reassembly procedures for the LS21BRBS TFT-LCD monitors. WARNING: This monitor contains electrostatically sensitive devices. Use caution when handling these components. 11-1 Disassembly Cautions: 1.
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11 Disassembly and Reassembly 3. Disconnect cable Main Board and Separate screw between Shield PCB and Bracket PCB.(2 point) 4. Separate screw Between Shield PCB and Panel. (4 point) and lift up the Shield. 5. Separate harness of the Panel with the IP Borad with the Main Board. 11-2 Reassembly Reassembly procedures are in the reverse order of disassembly procedures.
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12 PCB Daigram 12 PCB Diagram Input Voltage LVDS CONNECTOR CONNECTOR 1.8V 2.5V CM_LVDS Flash Memory Memory 3.3V MICOM SCALER 2.5V Video 2.5V Decoder 2.5V EEPROM S-VIDEO CONNECTOR C-VIDEO CONNECTOR DVI CONNECTOR D-SUB CONNECTOR Function CONNECTOR 12-1...
13 Circuit Descriptions 13-2 Block operating Feature Description Scaler Scaler Integrate ADC and TMDS, Scaling part Color management IC CM_LVDS This chip has Color adjust for color weakness , gamma adjustment, gray level color temperature compensation function DDR memory Save frame information that SCALER needed MEMORY VIDEO This chip receives video signal from the source and decodes signal to scaler needed...
14 Reference Infomation 14 Reference Infomation 14-1 Technical Terms - TFT-LCD - FINE "Fine" adjustment is used to adjust visibility by (Thin film Transistor Liquid Crystal Display) ADC(Analog to Digital Converter) control phase difference. This is a circuit that converts from analog signal to digital signals.
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14 Reference Infomation - Dot Pitch - External Device Input The image on a monitor is composed of red, green External device input refers to video input from and blue dots. The closer the dots, the higher the such external video devices as VCRs, camcorders resolution.
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14 Reference Infomation 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.
14 Reference Infomation 14-2 Connecting to Other devices - This monitor allows the user to connect it to such input devices as a DVD player, a VCR or a camcorder without disconnecting the PC. - The configuration at the back of the monitor may vary from product to product. 1) Connecting AV Devices - The monitor has AV connection terminals to connect AV input devices like DVD, VCR or Camcorder.
14 Reference Infomation 14-3 Pin Assignments Sync 15-Pin D-Sub Signal Cable Connector Type Separate Composite Sync-on-green Pin No. Green Green Green + H/V Sync. Blue Blue Blue DDC Return (GND) DDC Return (GND) DDC Return (GND) GND-R GND-R GND-R GND-G GND-G GND-G GND-B...
14 Reference Infomation 14-4 Timing Chart - This section of the service manual describes the timing that the computer industry recognizes as standard for computer-generated video signals. Table 2-1 Timing Chart VESA Mode VGA2/ VGA3/ 640/75 Hz 800/60 Hz 800/75 Hz 1024/60Hz 1024/75Hz 1280/60Hz...
14 Reference Infomation 14-5 Preset Timing Modes - If the signal transferred from the computer is the same as the following Preset Timing Modes, the screen will be adjusted automatically. However, if the signal differs, the screen may go blank while the power LED is on.