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Samsung MO17W Series Service Manual
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Samsung MO17W Series Service Manual

Samsung MO17W Series Service Manual

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SERVICE
TFT-LCD MONITOR
TFT-LCD MONITOR
MO17W*
Manual
CONTENTS
6. Electrical Parts List
10. Panel Description
CONFIDENTIAL

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Summary of Contents for Samsung MO17W Series

  • Page 1: Table Of Contents

    CONFIDENTIAL TFT-LCD MONITOR MO17W* SERVICE Manual TFT-LCD MONITOR CONTENTS 1. Precautions 2. Product Specifications 3. Disassembly & Reassembly 4. Troubleshooting 5. Exploded View & Parts List 6. Electrical Parts List 7. Block Diagram 8. Wiring Diagram 9. Schematic Diagrams 10. Panel Description...
  • Page 2 Samsung Electronics Co.,Ltd. 416, Maetan-3Dong, Paldal-Gu, Suwon City, Kyungki-Do, Korea. Printed in Korea P/N : BN82-00088A-00 http://www.samsungmonitor.com (SyncMaster Worldwide) http://www.samsung-monitor.com (SyncMaster USA) http://www.sec.co.kr/monitor (Korea)

  • Page 3: Precautions

    CONFIDENTIAL 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 (READING SHOULD circuit board. NOT BE ABOVE 0.5mA) Disconnect the AC power and DC Power Jack before servicing.

  • Page 4: Servicing Precautions

    CONFIDENTIAL 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.

  • Page 5: Product Specifications

    CONFIDENTIAL 2 Product Specifications 2-1 Specifications Description Item Analog Digital LCD Panel TFT-LCD panel, RGB vertical stripe, normally white transmissive, 17-Inch viewable, 0.2895 pixel pitch Scanning Frequency Horizontal : 30 KHz ~ 61 KHz (Automatic) Vertical : 56 Hz ~ 75 Hz Display Colors 16.2 Million colors Maximum Resolution...

  • Page 6: Pin Assignments

    CONFIDENTIAL 2 Product Specifications 2-2 Pin Assignments 2-2-1 15Pin D-Sub Separate Composite Sync-on-green Pin No. Green Green Green + H/V Sync. Blue Blue Blue GND (DDC Return) GND (DDC Return) GND (DDC Return) GND-Red GND-Red GND-Red GND-Green GND-Green GND-Green GND-Blue GND-Blue GND-Blue No Connection...
  • Page 7 CONFIDENTIAL 2 Product Specifications 2-3 Timing Chart This section of the service manual describes the timing that the computer industry recognizes as standard for computer-generated video signals. 2-3-1 LCD Panel Mode : 1 mode Definition of Terms "Active"Video Blanking Video Back Top/Left "Addressable"Video...
  • Page 8 CONFIDENTIAL 2 Product Specifications 2-3-2 Supported Modes (1) MO17W*...
  • Page 9 CONFIDENTIAL 2 Product Specifications 2-3-2 Supported Modes (2) MO17W*...
  • Page 10 CONFIDENTIAL 2 Product Specifications 2-3-2 Supported Modes (3) MO17W*...

  • Page 11: Disassembly & Reassembly

    CONFIDENTIAL 3 Disassembly and Reassembly This section of the service manual describes the disassembly and reassembly procedures for the MO17W* monitors. WARNING: This monitor contains electrostatically sensitive devices. Use caution when handling these components. 3-1 Disassembly Cautions:1. Disconnect the monitor from the power source before disassembly. 2.
  • Page 12 CONFIDENTIAL 3 Disassembly and Reassembly 4. Remove 2 flat head screws from the hinge mounting. Do not remove the screw for cable clamp. 5. Disconnect the stand cable from socket and remove stand assembly. 6. Remove 2 screws on cover rear. 7.
  • Page 13 CONFIDENTIAL 3 Disassembly and Reassembly 9. Disconnect the function cable from the connector on PCB. 10. Open the cover shield. MO17W*...
  • Page 14 CONFIDENTIAL 3 Disassembly and Reassembly 3-2 Replacement Order of Lamp Assemblies 1. After confirm there is nothing on the desk turn the LCD module over and put it on a flat desk. 2. Push down the stopper and slide the lamp unit out. 3.
  • Page 15 CONFIDENTIAL 3 Disassembly and Reassembly 4. Attach the new lamp units on the LCD module : opposite process 2 and 3 Replacement of lamp unit should be done at the power off state on a clean work bench. 3-3 Reassembly Reassembly procedures are in the reverse order of disassembly procedures.
  • Page 16 CONFIDENTIAL 3 Disassembly and Reassembly Memo MO17W*...

  • Page 17: Troubleshooting

    CONFIDENTIAL 4 Troubleshooting Notes: 1. Before troubleshooting, setup the PC’s display as below. • Resolution: 1280 x 768 • H-frequency: 48 KHz • V-frequency: 60 Hz 2. If no picture appears, make sure the power cord is correctly connected. 3. Check the following circuits. •...
  • Page 18 CONFIDENTIAL 4 Troubleshooting 4-2-1 No Video [Analog] Check signal cable and connection. Does the video signal appear at Pin 48, 47, 46, 45, 42, 41, 40, 39, 38, and 37 of IC401? Is Pin 2(BKLT_EN) of IC203 High? Check TFT-LCD panel and Inverter. Check IC301 and related circuit.

  • Page 19: No Video [Digital

    CONFIDENTIAL 4 Troubleshooting 4-2-2 No Video [Digital] Check signal cable and connection. Does the video signal appear at Pin 48, 47, 46, 45, 42, 41, 40, 39, 38, and 37of IC401? Is Pin 2(BKLT_EN) of IC203 High? Check TFT-LCD panel and Inverter. Check IC301 and related circuit.
  • Page 20 CONFIDENTIAL 4 Troubleshooting WAVEFORMS MO17W*...
  • Page 21 CONFIDENTIAL 5 Exploded View and Parts List Remark SA SA SA SA SA SA SA SA SA SA MO17W*...

  • Page 22: Exploded View & Parts List

    CONFIDENTIAL 5 Exploded View & Parts List Memo MO17W*...

  • Page 40: Block Diagram

    CONFIDENTIAL 7 Block Diagram MO17W*...
  • Page 41 CONFIDENTIAL 7 Block Diagrams Memo MO17W*...

  • Page 42: Wiring Diagram

    CONFIDENTIAL 8 Wiring Diagram CN401 INVERTER CN102 BRT_ADJ BRIGHT BL_ON/OFF BKLT_EN MAIN PCB +14V DC +14V DC +14V DC +14V DC +14V DC +14V DC CN201 CN601 MO17W*...
  • Page 43 CONFIDENTIAL 8 Wiring Diagram Memo MO17W*...

  • Page 44: Schematic Diagrams

    CONFIDENTIAL 9 Schematic Diagrams 9-1 Schematic Diagram RA303 ER[0:7] 120ohm DER[0:7] ER(7) DER(7) +5V_M DVDD_3.3V +5V_M AVDD_2.5V DVDD_2.5V AVDD_3.3V ER(6) DER(6) ER(5) DER(5) ER(4) DER(4) ER(3) DER(3) R301 ER(2) DER(2) ER(1) DER(1) R324 ER(0) DER(0) R302 RA304 1/16W 120ohm 1/16W DGND AGND AGND...
  • Page 45 CONFIDENTIAL 9 Schematic Diagrams 9-2 Schematic Diagram +5V_SW D213 D212 BZX84C5V1 BZX84C5V1 IC201 R218 R219 D214 NM24C02M8 R280 C207 DDC_SCL QZX363C5V6 100nF 1/16W 1/16W DDC_SDA R281 R220 +14V R221 AGND AGND AGND R222 1/16W R223 PGND CHK_DSUB AUDIO_CTL R224 A_V_SYNC +14VDC R225 +14VDC...
  • Page 46 CONFIDENTIAL 9 Schematic Diagrams MO17W*...
  • Page 47 CONFIDENTIAL 9 Schematic Diagrams 9-3 Schematic Diagram +5V_M +5V_M +3.3V PANEL_3.3V +5V_SW +14V +5V_M +14V_INV IC101 MC34063ACD R101 R108 L112 0.33 IC105 101uH SI9933ADY-T1 R109 L101 D1_1 101uH R107 4.7K Q101 D2_1 5 KSC1623-Y C199 OFF_SW R105 R106 C111 C112 C113 C114 C116...

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