Samsung Lacie720 Service Manual
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Samsung Lacie720 Service Manual

Samsung Lacie720 Service Manual

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SERVICE
LCD Monitor
LCD-Monitor
Chassis
LED20BS
Model
Lacie720
Manual
Fashion Feature
- Support Analog/Digital DVI-I, DVI-D
- Adopt LED BLU
- 10ms Adoption leads the time response
time which is improved
- Auto Pivot : When the monitor is rotated in
90 degree, the display LED and OSD also
are autimatically rotates accordingly.
This can be performed only when the Pivot
software are running.
- Magic Bright 2 : 6step used
(Custom/Text/Internet/Game/Sports/Movie)
- Outside Calibrator configured possibility

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Summary of Contents for Samsung Lacie720

  • Page 1: Service Manual

    LCD-Monitor Chassis LED20BS Model Lacie720 SERVICE Manual LCD Monitor Fashion Feature - Support Analog/Digital DVI-I, DVI-D - Adopt LED BLU - 10ms Adoption leads the time response time which is improved - Auto Pivot : When the monitor is rotated in 90 degree, the display LED and OSD also are autimatically rotates accordingly.
  • Page 2 Copyright Trademarks Samsung is the registered trademark of Samsung ©2006 by Samsung Electronics Co., Ltd. Electronics Co., Ltd. All rights reserved. LED20BS and MacMaster Cable Adapter are This manual may not, in whole or in part, be copied, trademarks of Samsung Electronics Co., Ltd.

  • Page 3: Table Of Contents

    Contents . Precautions ………………………………………………………………………………………………………………………………………1 1-1 Safety Precautions ……………………………………………………………………………………………………………………… 1-1 1-2 Servicing Precautions …………………………………………………………………………………………………………………… 1-2 1-3 Electrostatically Sensitive Devices (ESD) Precautions ……………………………………………………………………………… 1-2 1-4 Installation Precautions ………………………………………………………………………………………………………………… 1-3 . Product specifications …………………………………………………………………………………………………………………………2 2-1 Fashion Feature ………………………………………………………………………………………………………………………… 2-1 2-2 Specifications …………………………………………………………………………………………………………………………… 2-3 2-3 Feature ……………………………………………………………………………………………………………………………………...
  • Page 4 Contents 1 1 0. Operating Instructions and Installation … … …………………………………………………………………………………………………10-1 10-1 Front …………………………………………………………………………………………………………………………………… 10-1 10-2 Rear ……………………………………………………………………………………………………………………………………10-2 10-3 Using the Stand ………………………………………………………………………………………………………………………10-5 1 1 1. Disassembly and Reassembly ………………………………………………………………………………………………………………1 1 1-1 11-1 Disassembly ………………………………………………………………………………………………………………………… 11-1 11-2 Reassembly …………………………………………………………………………………………………………………………… 11-4 2.

  • Page 5: Precautions

    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.

  • Page 6: Servicing Precautions

    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 7: Installation Precautions

    1 Precautions 1-4 Installation Precautions 1. For safety reasons, more than two people are required 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.
  • Page 8 1 Precautions Memo...

  • Page 9: Product Specifications

    2 Product Specifications 2 Product Specifications 2-1 Fashion Feature - Support Analog/Digital DVI-I, DVI-D - Adopt LED BLU - 10ms Adoption leads the time response time which is improved - Auto Pivot: When the monitor is rotated in 90 degree, the display LED and OSD also are autimatically rotates accordingly.
  • Page 10 2 Product Specifications Like this the Color territory comes to be wider case existing Monitor which will use LED BackLight than and the place the Color wave length of the LED compares in the existing fluorescent lamp and the purity is high and territory namely color reverse of the Color it will be able to express the color which is wider (Color Gamut) comes to be wide.

  • Page 11: Specifications

    2 Product Specifications 2-2 Specifications Item Description LCD Panel TFT-LCD panel, RGB vertical stripe, normally black transmissive, 20-Inch viewable, 0.255 (H) x 0.255 (V) mm pixel pitch Scanning Frequency Horizontal : 31 kHz ~ 80 kHz (Automatic) Vertical : 56 Hz ~ 75 Hz (UXGA: 60 Hz) Display Colors 16.7 Million colors Maximum Resolution...

  • Page 12: Feature

    2 Product Specifications 2-3 Feature Feature Feature Operating method If EDISON turns on in some resolution for the first time, it can execute Auto Auto Auto adjustment automatically for the high Quality Auto Power EDISON can check the change of Source on/off Automatically and change the source to the active Input Wall mount...

  • Page 13: Spec Comparison

    2 Product Specifications 2-4 Spec Comparison Key Specification Model LY20EDB(LED20BS) LS21DP Design Screen Size 20" 21" Input Source Analog / Digital Analog / Digital / AV (DVI-I / DVI-D) / S-Video / Component 6 Steps 6 Steps Magic Bright Custom, Text, Internet, Game Game, Internet, Text, Custom, Sports, Movie Sports, Movie...

  • Page 14: Spec Comparison To The Other Models

    2 Product Specifications 2-5 Spec Comparisoon to the Other Models Key Specification Model Y20EDB(LED20BS) LS21DP Design Screen Size 20" 21" Input Source Analog / Digital Analog / Digital / AV (DVI-I / DVI-D) / S-Video / Component 6 Steps 6 Steps Magic Bright Custom, Text, Internet, Game Game, Internet, Text, Custom,...

  • Page 15: Option Specification

    2 Product Specifications 2-6 Option Specification Item Item Name CODE.NO Remark Quick Setup Guide BN96-04196A Warranty Card BH68-00261F (Not available in all locations) User's Guide, Monitor Driver, BN59-00577A Natural Color software Power Cord 3903-000085 DVI-I is DVI-I Cable BN39-00310C Analog Input DVI-D Cable BN39-00073A DVI-D is...
  • Page 16 2 Product Specifications Memo...

  • Page 17: Alignments And Adjustments

    1. After exchange the Main Board, We use the DDC control JIG and must complete downloading. Connecting is refer to below picture. 2. Receive/Download the proper DDC file for the model from HQ(SAMSUNG in Suwon) quality control department. MTI-2050 MTI-2055...

  • Page 18: Osd Adjustment When Replacing Lamp Only

    3 Alignments and Adjustments 3-5 OSD Adjustment When Replacing Lamp Only 1. Set the Brightness and Contrast to zero, and push the MENU button more than 5 seconds. The Function OSD is displayed like Figure 2. 2. Select the Panel Information. 3.

  • Page 19: Hidden Key List

    3 Alignments and Adjustments 3-7 Hidden Key list Function Action Method Hidden Service Function -. After setting in turn on to brightness and contrast '0' , push the 'menu' button more than 5 seconds -. Service Function appear at left upper -.

  • Page 20: Edid Input Method (Windows Program)

    3 Alignments and Adjustments 3-8 EDID Input method (Windows Program) 3-8-1. Before input the EDID, you have to unLocking the MCU. Figure 3. stage of EDID unlock function - EDID Unlocking Method 1. Setup Service Jig Program service.exe to your PC. 2.
  • Page 21 3 Alignments and Adjustments 3-8-2. EDID Input method Figure 4. stage of EDID Input 1. Excute "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"...
  • Page 22 3 Alignments and Adjustments Memo...

  • Page 23: Troubleshooting

    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.

  • Page 24: No Video (Pc Analog Signal)

    4 Troubleshooting 4-2 No Video (PC Analog Signal) Check signal cable connection and power. X201 oscillate properly? Replace or check related circuit. Is there R, G, B input at Check input part. R127, R125 and R118? Is there Hsync, Vsync waveform Check input part.
  • Page 25 4 Troubleshooting WAVEFORMS Figure 1. PC Analog signal Waveforms...

  • Page 26: No Video (Pc Digital Signal)

    4 Troubleshooting 4-3 No Video (PC Digital Signal) Check signal cable connection and power. Replace or check related circuit. X201 oscillate properly? Is there input data Check input part. RA1 (1, 3, 5, 7 PIN) and RA2 (1, 3 PIN)? Is there waveform Check input part.
  • Page 27 4 Troubleshooting WAVEFORMS Figure 2. PC Digital Signal Waveforms...

  • Page 28: Main Circuit And Each Part Number

    4 Troubleshooting 4-4 Main Circuit and Each Part Number Figure 3. Main Circuit...
  • Page 29 5. Exploded View & Part List 5. Exploded View & Part List 5-1. LY20EDEEB/EDC Exploded View...
  • Page 30 5. Exploded View & Part List 5-1-1. LY20EDEEB/EDC Parts List Location No. Code No. Description & Specification Q’ty SA/SNA Remark M0002 BN90-01041E ASSY COVER REAR;LS20ED,LACIE S.N.A M0003 BN96-04180C ASSY STAND P;LS20ED(LACIE),HIPS HB,BK26 S.N.A M0006 BN96-04179A ASSY SHIELD P-COVER;EDISON 20,SECC,T0.8 S.N.A BN94- M0014 ASSY PCB MAIN-AMZ,LASIC(FRANCE;LS20EDEEB...

  • Page 31: Electrical Parts List

    5. Exploded View & Part 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. LY20EDEEB/EDC Parts List Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark...
  • Page 32 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark ...3 CN102 3701-001173 CONNECTOR-DVI;24P,3R,FEMALE,ANGLE,AUF CONNECTOR-DSUB;24P+5C,3R,FEMALE,ANG ...3 CN101 3701-001221 LE,AU HEADER-BOARD TO ...3 CN330 3711-000057 S.N.A CABLE;BOX,3P,1R,2.5MM,AN HEADER-BOARD TO ...3 CN330 3711-000906 S.N.A CABLE;BOX,3P,1R,2MM,ANGL HEADER-BOARD TO ...3 CN6003...
  • Page 33 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark DIODE-SCHOTTKY;SS24/ ..4 D0254 0402-000553 B240,40V,2000mA,DO-2 DIODE-SCHOTTKY;SS24/ ..4 D0254 0402-000553 B240,40V,2000mA,DO-2 DIODE-SCHOTTKY;SS24/ ..4 D0254 0402-000553 B240,40V,2000mA,DO-2 DIODE-SCHOTTKY;SS24/ ..4 D0254 0402-000553 B240,40V,2000mA,DO-2 DIODE-ZENER;BZX84C5V6,5.2- ..4 D101 0403-000258 6V,225mW,SOT-2 DIODE-ZENER;BZX84C5V6,5.2-...
  • Page 34 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark IC-ANALOG SWITCH;FST3257,BUS SWITCH & ..4 IC103 1001-001146 IC-ANALOG SWITCH;FST3257,BUS SWITCH & ..4 IC105 1001-001146 IC-VIDEO SWITCH;PI3HDMI412FT,HDMI TMDS ..4 IC106 1001-001363 IC-ANALOG MULTIPLEX;IDTCBTLV3253QG,Q ..4 IC3002 1001-001425 SOP,...
  • Page 35 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark ..4 R220 2007-000070 R-CHIP;0ohm,5%,1/10W,TP,1608 S.N.A ..4 R3050 2007-000070 R-CHIP;0ohm,5%,1/10W,TP,1608 S.N.A ..4 R3051 2007-000070 R-CHIP;0ohm,5%,1/10W,TP,1608 S.N.A ..4 R201 2007-000071 R-CHIP;22ohm,5%,1/10W,TP,1608 S.N.A ..4 R221 2007-000071 R-CHIP;22ohm,5%,1/10W,TP,1608 S.N.A ..4...
  • Page 36 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark ..4 R4070 2007-000074 R-CHIP;100ohm,5%,1/10W,TP,1608 ..4 R4076 2007-000074 R-CHIP;100ohm,5%,1/10W,TP,1608 ..4 R102 2007-000078 R-CHIP;1Kohm,5%,1/10W,TP,1608 ..4 R111 2007-000078 R-CHIP;1Kohm,5%,1/10W,TP,1608 ..4 R143 2007-000078 R-CHIP;1Kohm,5%,1/10W,TP,1608 ..4 R3062 2007-000078 R-CHIP;1Kohm,5%,1/10W,TP,1608 ..4 R3103...
  • Page 37 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark ..4 R204 2007-000113 R-CHIP;33ohm,5%,1/10W,TP,1608 S.N.A ..4 R205 2007-000113 R-CHIP;33ohm,5%,1/10W,TP,1608 S.N.A ..4 R206 2007-000113 R-CHIP;33ohm,5%,1/10W,TP,1608 S.N.A ..4 R207 2007-000113 R-CHIP;33ohm,5%,1/10W,TP,1608 S.N.A ..4 R208 2007-000113 R-CHIP;33ohm,5%,1/10W,TP,1608 S.N.A ..4...
  • Page 38 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark ..4 R148 2007-000124 R-CHIP;2.2Kohm,5%,1/10W,TP,1608 S.N.A ..4 R149 2007-000124 R-CHIP;2.2Kohm,5%,1/10W,TP,1608 S.N.A ..4 R3068 2007-000124 R-CHIP;2.2Kohm,5%,1/10W,TP,1608 S.N.A ..4 R3069 2007-000124 R-CHIP;2.2Kohm,5%,1/10W,TP,1608 S.N.A ..4 R171 2007-000239 R-CHIP;1.5Kohm,1%,1/10W,TP,1608 S.N.A ..4...
  • Page 39 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark ..4 R202 2007-000821 R-CHIP;390ohm,1%,1/10W,TP,1608 S.N.A ..4 R113 2007-001002 R-CHIP;510ohm,5%,1/10W,TP,1608 S.N.A ..4 R144 2007-001002 R-CHIP;510ohm,5%,1/10W,TP,1608 S.N.A ..4 R6014 2007-001010 R-CHIP;51Kohm,5%,1/10W,TP,1608 ..4 R118 2007-001134 R-CHIP;68ohm,5%,1/10W,TP,1608 ..4 R125 2007-001134...
  • Page 40 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark ..4 C4021 2203-000236 C-CER,CHIP;0.1nF,5%,50V,C0G,1608 S.N.A ..4 C4022 2203-000236 C-CER,CHIP;0.1nF,5%,50V,C0G,1608 S.N.A ..4 C4023 2203-000236 C-CER,CHIP;0.1nF,5%,50V,C0G,1608 S.N.A ..4 C209 2203-000257 C-CER,CHIP;10nF,10%,50V,X7R,TP,1608 ..4 C210 2203-000257 C-CER,CHIP;10nF,10%,50V,X7R,TP,1608 ..4 C211 2203-000257...
  • Page 41 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark ..4 C4089 2203-000257 C-CER,CHIP;10nF,10%,50V,X7R,TP,1608 ..4 C4090 2203-000257 C-CER,CHIP;10nF,10%,50V,X7R,TP,1608 ..4 C4091 2203-000257 C-CER,CHIP;10nF,10%,50V,X7R,TP,1608 ..4 C4092 2203-000257 C-CER,CHIP;10nF,10%,50V,X7R,TP,1608 ..4 C4093 2203-000257 C-CER,CHIP;10nF,10%,50V,X7R,TP,1608 ..4 C4094 2203-000257 C-CER,CHIP;10nF,10%,50V,X7R,TP,1608 ..4 C4095...
  • Page 42 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark ..4 C4071 2203-000440 C-CER,CHIP;1nF,10%,50V,X7R,1608 ..4 C4072 2203-000440 C-CER,CHIP;1nF,10%,50V,X7R,1608 ..4 C4073 2203-000440 C-CER,CHIP;1nF,10%,50V,X7R,1608 ..4 C4096 2203-000440 C-CER,CHIP;1nF,10%,50V,X7R,1608 ..4 C4097 2203-000440 C-CER,CHIP;1nF,10%,50V,X7R,1608 ..4 C4098 2203-000440 C-CER,CHIP;1nF,10%,50V,X7R,1608 ..4 C4099...
  • Page 43 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark ..4 C4018 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 ..4 C4019 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 ..4 C4020 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 ..4 C4058 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 ..4 C4059 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 ..4 C4060 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 ..4 C4061...
  • Page 44 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark ..4 C6056 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 ..4 C6057 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 ..4 C6059 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 ..4 C6060 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 ..4 C6061 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 ..4 C6062 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 ..4 C6063...
  • Page 45 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark ..4 C6049 2203-005437 C-CER,CHIP;10000nF,+80-20%,10V,Y5V,3216 S.N.A ..4 C6058 2203-005437 C-CER,CHIP;10000nF,+80-20%,10V,Y5V,3216 S.N.A ..4 C6065 2203-005437 C-CER,CHIP;10000nF,+80-20%,10V,Y5V,3216 S.N.A ..4 C6067 2203-005437 C-CER,CHIP;10000nF,+80-20%,10V,Y5V,3216 S.N.A ..4 C6069 2203-005437 C-CER,CHIP;10000nF,+80-20%,10V,Y5V,3216 S.N.A ..4...
  • Page 46 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark ..4 T0052 2703-001778 INDUCTOR-SMD;3.3uH,20%,3225 ..4 T0052 2703-001778 INDUCTOR-SMD;3.3uH,20%,3225 ..4 T0052 2703-001778 INDUCTOR-SMD;3.3uH,20%,3225 ..4 T0052 2703-001778 INDUCTOR-SMD;3.3uH,20%,3225 ..4 T0052 2703-002915 INDUCTOR-SMD;22uH,20%,8080 ..4 T0052 2703-002915 INDUCTOR-SMD;22uH,20%,8080 CRYSTAL-SMD;24MHZ,30PPM,28- ..4...
  • Page 47 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark BEAD-SMD;18ohm,1608,TP,11.8ohm/ ..4 T0568 3301-001793 37.6MHz,2 BEAD-SMD;18ohm,1608,TP,11.8ohm/ ..4 T0568 3301-001793 37.6MHz,2 BEAD-SMD;18ohm,1608,TP,11.8ohm/ ..4 T0568 3301-001793 37.6MHz,2 ..4 IC3001_SOC 3704-000001 SOCKET-IC;44P,PLCC,SN,1.27mm ..4 IC3004_SOC 3704-000001 SOCKET-IC;44P,PLCC,SN,1.27mm HEADER-BOARD TO ..4 CN330...
  • Page 48 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark M0113 BN92-01949M ASSY P/MATERIAL;LS20EDBEB/XAA S.N.A BAG PE;HDPE/NITRON,T0.015/ T0524 6902-000520 S.N.A T0.5(DOUBLE),W BAG WRAPPING;LDPE,T0.02,W500,L10000,T T0003 6902-000604 S.N.A ASSY ACCESSORY- BN92-03577Z S.N.A LASIC(FRANCE);LS20EDEEB/L CBF-POWER CORD;DT,EU,FP3/YES,IEC320 T0268 3903-000042 C13/...

  • Page 49: B B Lock Diagram

    7 Block Diagrams 7 Block Diagram - This Document can not be used without Samsung s authorization. 7-1 Main Circuit Figure 1. Main Board Block Diagram...

  • Page 50: Power Board

    7 Block Diagrams 7-2 Power Board Figure 2. Power Board Block Diagram...

  • Page 51: Wiring Diagram

    8 Wiring Diagram 8 Wiring Diagram...
  • Page 52 8 Wiring Diagram Memo...

  • Page 53: Schematic Diagrams

    9 Schematic Diagrams 9 Schematic Diagrams - This Document can not be used without Samsung s authorization.
  • Page 54 9 Schematic Diagrams - This Document can not be used without Samsung s authorization.
  • Page 55 9 Schematic Diagrams - This Document can not be used without Samsung s authorization.
  • Page 56 9 Schematic Diagrams - This Document can not be used without Samsung s authorization.
  • Page 57 9 Schematic Diagrams - This Document can not be used without Samsung s authorization.
  • Page 58 9 Schematic Diagrams Memo...

  • Page 59: 1 0. Operating Instructions And Installation

    10 Operating Instructions and Installation 10 Operating Instructions and Installation 10-1 Front . MODE button ) Internet - Seclet five display Mode For working with a mixture of images such as text - 1)Custom, 2)sRGB, 3)AdobeRGB, 4)Emulation, and graphics. 5)Calibration ) Game .

  • Page 60: Rear

    10 Operating Instructions and Installation . AUTO button (Available in Analog mode only) . Power button When the 'AUTO' button is pressed, the Auto Use this button for turn the monitor on and off. Adjustment screen appears as shown in the ani- ower indicator mated screen on the center.
  • Page 61 10 Operating Instructions and Installation 3. POWER 1. POWER S/W : Switch the monitor on and off. 2. POWER : Connect the power cord for your monitor to the POWER on the back of the monitor. 4. Kensington Lock The Kensington lock is a device used to physically fix the sys- tem when using it in a public place.

  • Page 62: Using The Stand

    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.

  • Page 63: Attaching A Base

    10 Operating Instructions and Installation 10-3-3 Attaching a Base - This monitor accepts a 100mm x 100mm VESA-compliant mounting interface pad. 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.
  • Page 64 10 Operating Instructions and Installation Memo 10-6...

  • Page 65: 1 1. Disassembly And Reassembly

    11 Disassembly and Reassembly 11 Disassembly and Reassembly This section of the service manual describes the disassembly and reassembly procedures for the LED20BS TFT-LCD monitors. WARNING: This monitor contains electrostatically sensitive devices. Use caution when handling these components. 11-1 Disassembly Cautions: 1.
  • Page 66 11 Disassembly and Reassembly Description Picture Description 2. Take out 3 screws on rear cabinet. Use the Jig and Separate Cover Rear. 3. Separate 1 screw on USB shield cover 4. - Separate USB shield cover. - Separate Function PCB wire from - main board.
  • Page 67 11 Disassembly and Reassembly Description Picture Description 5. Separate LVDS cable form the Panel. 6. Separate the 3 crews from the PBA Board. 11-3...

  • Page 68: Reassembly

    11 Disassembly and Reassembly 11-2 Reassembly * Reassembly procedures are in the reverse order of disassembly procedures. 11-4...

  • Page 69: Pcb Diagram

    12 PCB Daigram 12 PCB Diagram 12-1 Main Board Part Description 12-1...

  • Page 70: Main Board Part Number

    12 PCB Diagram 12-2 Main Board Part Number 12-2...

  • Page 71: Circuit Descriptions

    13 Circuit Descriptions 13 Circuit Descriptions 13-1 Block description 13-2 Block operating Feature Description Scaler Scaler Integrate ADC and TMDS, Scaling part DDR memory Save frame information that SCALER needed MEMORY -.MCU recognize angle through the sensor and rotate OSD Pivot Sensor -.Rotate screen through the Pivot soft ware FLASH...
  • Page 72 13 Circuit Descriptions Memo 13-2...

  • Page 73: Reference Infomation

    14 Reference Infomation 14 Reference Infomation 14-1 Technical Terms case and existing storehouse color reverse CCFL - LED BackLight Unit - It is caused by with growth of technical power, of this LED Monitor Monitor compared to come to the Needs against the color where the entering be wide and the color reverse comes to be wide, it users are near recently naturally is increasing.
  • Page 74 14 Reference Infomation - Auto Configuration - Vertical Frequency This is an algorithm to adjust monitor to optimum The screen must be redrawn several times per condition by pushing one key. second in order to create and display an image for the user.

  • Page 75: Connecting The Monitor

    14 Reference Infomation 14-2 Connecting the Monitor Rear of Computer Rear of Monitor ● ● New Model Macintosh ● Old Model Macintosh ● 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.

  • Page 76: Connecting To Other Devices

    14 Reference Infomation 14-3 Connecting to other devices - This monitor will use the USB and it will be able to use the USB device USB Cable A-B Type cable) - UP (USB upstream port): Connect the UP port of the monitor and the USB port of the computer with the USB cable. - DOWN (USB downstream port): Connect the DOWN port of the USB monitor and a USB device with the USB cable.

  • Page 77: Pin Assignments

    14 Reference Infomation 14-4 Pin Assignments Sync 24P DVI-D Type Pin No. No Connection Rx2- Rx2+ +5V_M Self Raster No Connection +5V_M No Connection Rx0- DDC Clock (SCL) Rx0+ DDC Data (SDA) No Connection Rx1- No Connection Rx1+ RxC+ No Connection RxC- Sync 24P DVI-I...

  • Page 78: Timing Chart

    14 Reference Infomation 14-5 Timing Chart - This section of the service manual describes the timing that the computer industry recognizes as standard for computer-generated video signals. Table 1 Timing Chart VESA Mode VGA2/ VGA3/ 640/75 Hz 800/60 Hz 800/75 Hz 1024/60 Hz 1024/75 Hz 1280/60 Hz...
  • Page 79 14 Reference Infomation Table 2 Timing Chart VESA Mode 1600/60 Hz 1280/75 Hz 1600x1200 1280x1024 Timing fH (kHz) 75.000 79.975 A μsec 13.333 12.504 B μsec 1.185 1.067 C μsec 1.877 1.837 D μsec 9.877 9.481 E μsec 0.395 0.119 fV (Hz) 60.000 75.025...

  • Page 80: Preset Timing Modes

    14 Reference Infomation 14-6 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.

  • Page 81: Panel Description

    14 Reference Infomation 14-7 Panel Description Maker VENDOR P/N PANEL_CODE PANEL_ABB STICKER_CODE Remark LT140X1-002 BN07-00004A BN68-00239H LT150XS-L01 BN07-00009A LT150XS-L01-B BN07-00022A LTM150XS-L02 BN07-00005A LT181E2-132 BN07-00001A LT150XS-T01 BN07-00010A LTM181E3-132 BN07-00019A LT170E2-131 BN07-10001D LT181E2-131 BN07-10001E LTM170E4-L01 BN07-00018A LTM240W1-L01 BN07-00015A LTM213U3-L01 BN07-00016A LTM150XH-L01 BN07-00026A LTM150XH-L03 BN07-00027A LTM150XS-L01...
  • Page 82 14 Reference Infomation Maker VENDOR P/N PANEL_CODE PANEL_ABB STICKER_CODE Remark LTM150XH-L06 BN07-00117A "ZPD Panel code" LTM153W1-L01 BN07-00118A "ZPD Panel code" LTM170WP-L01 BN07-00119A "PVA Panel for NIKE" LTM213U4-L01 BN07-00039A 21.3" NARROW LTA260W1-L01 BN07-00121A VENUS LTA220W1-L01 BN07-00074B "Panel B-level panel code for 22"" TV Panel " LTA320W1-L01 BN07-00108A "Panel for AMLCD 32""...
  • Page 83 14 Reference Infomation Maker VENDOR P/N PANEL_CODE PANEL_ABB STICKER_CODE Remark CLAA150XP01 BN07-00173B CPT 15" PSWG panel ZPD code CLAA170EA07 BN07-00174A "CPT 17"" PSWG panel code derivation? CLAA170EA07 BN07-00174B CPT 17"""" PSWG type new Panel code""" CLAA170EA07 BN07-00174B CPT 17" PSWG type new Panel code TOSHIBA LTM15C419(A) BN07-00002A...
  • Page 84 14 Reference Infomation Maker VENDOR P/N PANEL_CODE PANEL_ABB STICKER_CODE Remark HYUNDAI HT15X13 BN07-00035A HYUNDAI HT17E11-200 BN07-00049A TN MODE HYUNDAI HT17E11-300 BN07-00093A HT17E11-300 ZPD panel HYUNDAI HT17E11-400 BN07-00094A HT17E11-400 normal panel HYUNDAI HT17E11-400 BN07-00095A HT17E11-400 ZPD panel code HYUNDAI HT17E12 BN07-00096A HT17E12 ( Narow &...
  • Page 85 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 : BN82-00172A-00 law.

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