LCD-Monitor Chassis LHU30BS Model 305TPLUS SERVICE Manual LCD Monitor Fashion Feature - 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...
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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 : BN82-00169A-01 law.
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, or Windows NT.
3 Alignments and Adjustments 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 3-5 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.
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13 Circuit Descriptions BLOCK DESCRIPTION NAME LX801s EMI Filter Coil Line filter Inrush current FP801S For continued protection Power Factor Correction (PFC) allows power distribution to PFC section PFC Circuit operate at its maximum efficiency M-power Multiple-chip power Device F9222L Standby power is the power consumed by an appliance during Standby power STD 6V...
11 Disassembly and Reassembly 11 Disassembly and Reassembly This section of the service manual describes the disassembly and reassembly procedures for the 305TLCD monitor. 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 Description Picture Description 3. Disconnect cables and remove the inverter power and function cable 4. Remove 1screws from the Shield. 5. Remove 4screws from the Shield between LCD_psanel and Shield 6. Disconnect cables LVDS and Signal from Panel control board 11-2...
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11 Disassembly and Reassembly Description Picture Description 7. Remove 2screws from DVI input connector 8. Up and down the chassis ass'y 9. Remove 2 screw on the main board 10.Remove 3 screws on the SMPS board 11-3...
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11 Disassembly and Reassembly Description Picture Description 11.Disconnect cables LVDS and Signal and Power from Main board 11-3 Reassembly Reassembly procedures are in the reverse order of disassembly procedures. 11-4...
6 Electrical Parts List 6 Electrical Parts List You can search for updated part codes through ITSELF web site. URL : http://itself.sec.samsung.co.kr/ 6-1. LS30HUXCB/XSF Parts List Level Loc. No. Code No. Description & Specification Q'ty SA/SNA LS30HUXCB/XSF 305TPLUS,WQA1/S30A0-LHU,30,LCD-MO,CHINA M0001 BN90-01014G ASSY COVER FRONT;LS30HUX_305T PLUS...
6 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 5-1. Exploded View T0003 M0215 M0145 M0014 M0006 T0514 M0002 M0003...
10 Operating Instructions and Installation 10 Operating Instructions and Installation 10-1 Product Features (Standard) Swivle Tilt - Improved Response Time by Adopting RTA - Sync & DE(Data Enable) mode : 6 ms (Based on "Gray to Gray") - Dual Link TMDS serial interface (4pixel/clock) - High contrast ratio &...
10 Operating Instructions and Installation 10-3 Installation Instructions (The configuration at the back of the monitor may vary from product to product.) 1. USB DOWNSTREAM : Connect the USB DOWN port of the USB monitor and a USB device with the USB cable. 2.
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 high- voltage cable or the antenna falling over may 2.
2 Product Specifications 2 Product Specifications 2-1 Fashion Feature -. Improved Response Time by Adopting RTA: 6ms (Based on "Gray to Gray") -. High contrast ratio & high aperture structure -. High speed response -. WQXGA (2560 x 1600 pixels) resolution -.
2 Product Specifications 2-4 Spec Comparison to the Old Models LS17VDP(770P) Model LHU30BS(305T PLUS) LS19VDP(970P) Design 6ms (Gray to Gray) 8ms (Gray to Gray) Repones Time The IC for the enhancement of the response time is applied. The IC for the enhancement of the response time is applied. Magic pivot AUTO(Pivot program + Sensor IC) Magic color...
14 Reference Infomation 14 Reference Infomation 14-1 Technical Terms -TFT-LCD -Image Lock This means "Fineness adjustment " in LCD (Thin film Transistor Liquid Crystal Display) ADC(Analog to Digital Converter) Monitor, the features are "Fine" and "Coarse" This is a circuit that converts from analog signal to digital signals.
14 Reference Infomation -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...
14 Reference Infomation 14-2 Connecting Your Monitor 1. Connect the power cord 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. Using the DVI-D (Digital) connector on the video card. Connect the DVI-D cable to the DVI-D port on the back of your monitor.
14 Reference Infomation 14-3 Pin Assignments Sync 24P DVI-D Type Pin No. Rx2- Data Rx3+ +5V_M Rx2+ +5V_M GND Data Rx4- Hot plug D Data Rx4+ Rx0- DDC Clock (SCL) Rx0+ DDC Data (SDA) Data Rx5- Data Rx5+ Rx1- Rx1+ RxC+ Data Rx3- RxC-...
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-Reduced Blanking Mode 1280/60Hz 2560/60Hz 1280X800 2560X1600 Timing 49.306 98.713 fH (kHz) 20.282...
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14 Reference Infomation Horizontal Frequency The time to scan one line connecting the right edge to the left edge of the screen horizontally is called Horizontal Cycle and the inverse number of the Horizontal Cycle is called Horizontal Frequency. Unit: kHz Vertical Frequency Like a fluorescent lamp, the screen has to repeat the same image many times per second to display an image to the user.
4 Troubleshooting 4 Troubleshooting Notes: 1. Before troubleshooting, setup the PC ’ s display as below. • Resolution: 2560 x 1600 • H-frequency: 98.7 kHz • V-frequency: 60 Hz 2. If no picture appears, make sure the power cord is correctly connected. 3.
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4 Troubleshooting 4-2 No Power (Main) Check Function ass'y. Does proper DC 6V Check the FP801S at SMPS board appear at Pin 1 of and related circuit CN601? When Pin 1 of IC601 is DC 6V Check IC601 and related circuit. does proper DC 3.3V appear at Pin 3 of IC601? Check X200, IC200 and related...
4 Troubleshooting 4-3 No Video (DIGITAL) Check signal cable connection and power. Replace or check related circuit. X200 oscillate properly? Is there input data at Check input part. R122, R124, R127, R128, R129 and R130? Is there wave from Does the output signal appear Check LCD Panel and related circuit.