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Samsung 203B - SyncMaster - 20" LCD Monitor Service Manual
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Samsung 203B - SyncMaster - 20" LCD Monitor Service Manual

Chassis lha20bs
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See also: User Manual
SERVICE
LCD Monitor
LCD-Monitor
Chassis LHA20BS
Model
Manual
Fashion Feature
- Premium HAS application(Lift 80mm)
- Magic Rotation application
(Auto pivot Delete)
- Embeded Power, Mechanical S/W
application
203B

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Summary of Contents for Samsung 203B - SyncMaster - 20" LCD Monitor

  • Page 1: Service Manual

    LCD-Monitor Chassis LHA20BS Model 203B SERVICE Manual LCD Monitor Fashion Feature - Premium HAS application(Lift 80mm) - Magic Rotation application (Auto pivot Delete) - Embeded Power, Mechanical S/W application...
  • Page 2 Copyright Trademarks Samsung is the registered trademark of Samsung ©2005 by Samsung Electronics Co., Ltd. Electronics Co., Ltd. All rights reserved. LHA20BS 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 ……………………………………………………………………………………………………………………………… 2-1 2-3 LS20BRD feature ………………………………………………………………………………………………………………………… 2-2 2-4 Spec Comparison …………………………………………………………………………………………………………………………...
  • Page 4 Contents . Schematic Diagrams ……………………………………………………………………………………………………………………………9 9-1 Schematic Diagrams ……………………………………………………………………………………………………………………… 9-1 9-2 Schematic Diagrams ………………………………………………………………………………………………………………………9-3 1 1 0. Operating Instructions and Installation … … …………………………………………………………………………………………………10-1 10-1 Front …………………………………………………………………………………………………………………………………… 10-1 10-2 Rear ………………………………………………………………………………………………………………………………………10-2 10-3 Using the Stand …………………………………………………………………………………………………………………………10-4 1 1 1. Disassembly and Reassembly ………………………………………………………………………………………………………………1 1 1-1 11-1 Disassembly ……………………………………………………………………………………………………………………………...
  • Page 5 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 : BN82-00136F-00 law.

  • Page 6: Operating Instructions And Installation

    10 Operating Instructions and Installation 10 Operating Instructions and Installation 10-1 Front 1. Menu button 3) Internet : Medium brightness Opens the OSD menu. Also use to exit the OSD For working with a mixture of images such as text menu or return to the previous menu.

  • Page 7: Rear

    10 Operating Instructions and Installation 4. Enter button / Source button 5. Auto button Activates a highlighted menu item. / When the 'AUTO' button is pressed, the Auto Push the 'SOURCE', then selects the video signal Adjustment screen appears as shown in the ani- while the OSD is off.
  • Page 8 10 Operating Instructions and Installation DVI IN port : Connect the DVI Cable to the DVI IN port on the back of your monitor. (SOURCE : digital) RGB IN port : Connect the signal cable to the RGB IN port on the back of your monitor. (SOURCE : analog) Kensington Lock : The Kensington lock is a device used to physically fix the system...

  • Page 9: 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 10: Attaching A Base

    10 Operating Instructions and Installation 10-3-2 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 11 10 Operating Instructions and Installation Memo 10-6...

  • Page 12: 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 203B TFT-LCD monitors. WARNING: This monitor contains electrostatically sensitive devices. Use caution when handling these components. 11-1 Disassembly Cautions: 1.Please the power off, before disassemble the monitor.
  • Page 13 11 Disassembly and Reassembly Description Picture Description 3. Remove 1 screws from Lamp shield 4. Disconnect a FUNCTION Wire from PCB ASS Y. 5. Disconnect 4 Lamp Wire and Wire. 6. Disconnect a LVDS Wire from Panel. 11-2...

  • Page 14: Reassembly

    11 Disassembly and Reassembly Description Picture Description 7. Remove 4 hexa screws from PBA board which is connected PCB bracket. 8. Remove 4 screws from PBA board and pull up the PBA from the bracket as picture. 9. Totally disassembled PBA board. 11-2 Reassembly Reassembly procedures are in the reverse order of disassembly procedures.
  • Page 15 11 Disassembly and Reassembly Memo 11-4...

  • Page 16: C C Ircuit Descriptions

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

  • Page 17: Block Operating

    13 Circuit Descriptions 13-2 Block operating Feature Description Scaler Scaler Integrate ADC and TMDS, Scaling part. DDR memory Save frame information that SCALER needed . MEMORY Microcontroller. MICOM Micom control all function of monitor. Analog signal from the PC is changed to digital signal using the A/D converter integrated in scaler(MST6281). Scaler scale this digital singal to optimal signal fit to the panel and encode the LVDS signal.

  • Page 18: Reference Infomation

    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.
  • Page 19 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.

  • Page 20: Connecting The Monitor

    14 Reference Infomation - Connecting the Monitor 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.

  • Page 21: Pin Assignments

    14 Reference Infomation 14-2 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...

  • Page 22: Timing Chart

    14 Reference Infomation 14-3 Timing Chart - This section of the service manual describes the timing that the computer industry recognizes as standard for computer-generated video signals. Table 14-1 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 23: Preset Timing Modes

    14 Reference Infomation 14-4 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 24: Panel Description

    14 Reference Infomation 14-5 Panel Description Maker VENDOR P/N PANEL_CODE PANEL_ABB STICKER_CODE Remarks 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 25 14 Reference Infomation Maker VENDOR P/N PANEL_CODE PANEL_ABB STICKER_CODE Remarks LTA460H1-L01 BN07-00157A "creat panel code for AMLCD 46"" TV " LTM170EU-L11 BN07-00160A "creat new panel code for AMLCD 17"" (Panel only for TCO03)" LTM240W1-L03 BN07-00134B "24"" panel ZPD code derivation" LTM190E4-L01 BN07-00145B "AMLCD 19""...
  • Page 26 14 Reference Infomation Maker VENDOR P/N PANEL_CODE PANEL_ABB STICKER_CODE Remarks TORISAN TM290WX-71N31 BN07-00115A "Color Coordinates change panel for TORISAN 29"" TV" TORISAN TM396WX-71N31 BN07-00116A RP,Q "Color Coordinates change panel for TORISAN 40"" TV" TORISAN TM22OWX-71N31 BN07-00125A "Development TORISAN 22"" TV PANEL (ZPD)" TORISAN TM22OWX-71N31 BN07-00127A...
  • Page 27 14 Reference Infomation Memo 14-10...

  • Page 28: Product Specifications

    2 Product Specifications 2 Product Specifications 2-1 Fashion Feature -. Premium HAS application(Lift 80mm) -. Magic Rotation application(Auto pivot Delete) -. Embeded Power, Mechanical S/W application 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)

  • Page 29: Ls20Brd Feature

    2 Product Specifications 2-3 LS20BRD feature Feature Feature Operating method If 204B turns on in some resolution for the first time, it can execute Auto Auto Auto adjustment automatically for the high Quality Auto Power 204B can check the change of Source on/off Automatically and change the source to the active Input Wall mount...

  • Page 30: Spec Comparison

    2 Product Specifications 2-4 Spec Comparison Model Design...

  • Page 31: Option Specification

    2 Product Specifications 2-5 Option Specification Item Item Name CODE.NO Remark Quick Setup Guide BN68-00376L Warranty Card BH68-00261F (Not available in all locations) User's Guide, Monitor Driver, BN59-00480H MagicTune software D-Sub(15 Pin) BN39-00244B Cable Power Cord 3903-000085 DVI Cable BN39-00246F Sold separately...

  • Page 32: Troubleshooting

    4 Troubleshooting 4 Troubleshooting 4-1 No Power There is no light in the power indicator. Does proper DC 14 V Check the IP Board. appear at Pin 5,6,7 of CN101? Does proper DC 5V Check the IC 203 appear at Output of IC203? Does proper DC 3.3V Check the IC 403.
  • Page 33 4 Troubleshooting WAVEFORMS...

  • Page 34: No Video (Pc Analog Signal)

    4 Troubleshooting 4-2 No Video (PC Analog Signal) Is pin9 of Check TFT_LCD panel or inverter CN501(BKLT_EN)high(3.3V)? and connection between then. Does the analog video signal Check pc signal. appear at R101,105, 108 (Red,Green,Blue)? Does the X201 and X200 Check the X200, IC201. oscilate Properly? Does the proper clock pules Check IC302 and IC201.
  • Page 35 4 Troubleshooting WAVEFORMS...

  • Page 36: No Video (Pc Digital Signal)

    4 Troubleshooting 4-3 No Video (PC Digital Signal) Check TFT_LCD panel or inverter Is Pin9 of and connection between then. CN501(BKLT_EN)high(3.3V)? Does the Digital video Check PC signal. signal appear at R129~R136? Does the proper clock pules appear at Pin6,7 Check IC301 and 302.
  • Page 37 4 Troubleshooting WAVEFORMS...

  • Page 38: Exploded View And Parts List

    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 5-1 LS20HABKSQ/XAA Exploded View(ROUND SIMPLE) M0215 M0006 M0013 T0003 M0014 M0174 M0107...
  • Page 39 5 Exploded View & Parts List Location.No CODE-NO SPECIFICATION & DESCRIPTION Q'TY SA/SNA REMARK T0003 BN96-02834G ASSY COVER P-FRONT;LS20HAB (S/M 203B),AB M0112 BN63-02258F COVER-FRONT;LS20HAB (S/M203B),ABS,T2.2,H S.N.A T0022 BN64-00377B KNOB CONTROL;HA17TS,PC CLEAR,T2.1,9,112, S.N.A M0145 BN96-02474C ASSY BOARD P-FUNCTION;HAYDN,YWP-VD-05-05 M0215 BN07-00268A LCD-PANEL;M201P1-L01,Brahms,6Bit FRC,432 M0006 BN96-03342A ASSY SHIELD P-COVER;LS20HAB (203B),SECC,...

  • Page 40: Lha20Bs Exploded View

    5 Exploded View & Parts List 5-2 LHA20BS(LS20HABESQ/EDC) Exploded View(SLIDING HAS) M0215 M0006 T0003 M0014 M0174 M0107 M00006 M0112 M0003 T0022 M0145...
  • Page 41 5 Exploded View & Parts List Location.No CODE-NO SPECIFICATION & DESCRIPTION Q'TY SA/SNA REMARK T0003 BN96-02834G ASSY COVER P-FRONT;LS20HAB (S/M 203B),AB M0112 BN63-02258F COVER-FRONT;LS20HAB (S/M203B),ABS,T2.2,H S.N.A T0022 BN64-00377B KNOB CONTROL;HA17TS,PC CLEAR,T2.1,9,112, S.N.A M0145 BN96-02474C ASSY BOARD P-FUNCTION;HAYDN,YWP-VD-05-05 M0215 BN07-00268A LCD-PANEL;M201P1-L01,Brahms,6Bit FRC,432 M0006 BN96-03342A ASSY SHIELD P-COVER;LS20HAB (203B),SECC,...

  • Page 42: Lha20Bs Parts List

    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 LHA20BS Parts List(ROUND SIMPLE) Level Loc. No. Code No. Description & Specification Q'ty SA/SNA LS20HABKBQ/XAA 203B,SPA1/S20B1-LHA,20,LCD-MO,UNITED STA...

  • Page 43: Electrical Parts List

    6 Electrical Parts List Level Loc. No. Code No. Description & Specification Q'ty SA/SNA ..4 D230 0403-001411 DIODE-ZENER;-,5.49-5.73V,200mW,SOD-323,T ..4 D231 0403-001411 DIODE-ZENER;-,5.49-5.73V,200mW,SOD-323,T ..4 D221 0406-001061 DIODE-TVS;MMQA5V6T3,5.32/5.6/5.88V,24W,S ..4 D232 0406-001061 DIODE-TVS;MMQA5V6T3,5.32/5.6/5.88V,24W,S ..4 ZD200 0406-001061 DIODE-TVS;MMQA5V6T3,5.32/5.6/5.88V,24W,S ..4 Q201 0501-000342 TR-SMALL SIGNAL;KSC1623-Y,NPN,200mW,SOT- ..4 Q302 0501-002080 TR-SMALL SIGNAL;2SC2412K,NPN,200mW,SC-59...
  • Page 44 6 Electrical Parts List Level Loc. No. Code No. Description & Specification Q'ty SA/SNA ..4 R221 2007-000090 R-CHIP;10Kohm,5%,1/10W,TP,1608 ..4 R230 2007-000090 R-CHIP;10Kohm,5%,1/10W,TP,1608 ..4 R231 2007-000090 R-CHIP;10Kohm,5%,1/10W,TP,1608 ..4 R232 2007-000090 R-CHIP;10Kohm,5%,1/10W,TP,1608 ..4 R301 2007-000090 R-CHIP;10Kohm,5%,1/10W,TP,1608 ..4 R304 2007-000090 R-CHIP;10Kohm,5%,1/10W,TP,1608 ..4 R305 2007-000090 R-CHIP;10Kohm,5%,1/10W,TP,1608 ..4...
  • Page 45 6 Electrical Parts List Level Loc. No. Code No. Description & Specification Q'ty SA/SNA ..4 C310 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 ..4 C322 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 ..4 C610 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 ..4 C611 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 ..4 C615 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 ..4 C616 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 ..4 C617 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 ..4...
  • Page 46 6 Electrical Parts List Level Loc. No. Code No. Description & Specification Q'ty SA/SNA T0376 6902-000379 BAG AIR;LDPE,T0.2,W1000,L1800,TRP,-,-- 0.002 S.N.A T0524 6902-000520 BAG PE;HDPE/NITRON(DOUBLE),T0.015/T0.5(D S.N.A 6902-000604 BAG WRAPPING;LDPE,T0.02,W500,L10000,TRP, 1.38 S.N.A M0081 6902-000609 BAG ROLL;LDPE,T0.05,W2400,L1000,TRP,-,- 0.028 S.N.A M0045 BN92-01720T ASSY ACCESSORY;LS20HABKBQ/XAA S.N.A M0114 BN39-00244B...
  • Page 47 6 Electrical Parts List 6-2 LS20HABESQ/EDC Parts list (SLIDING HAS) Level Loc. No. Code No. Description & Specification Q'ty SA/SNA LS20HABESQ/EDC 203B,SPA1/S20B1-LHA,20,LCD-MO,NETHERLAND M0001 BN90-00908B ASSY COVER FRONT;CTZ-LS20HABBSQ/EDC,203B S.N.A T0003 BN96-02834G ASSY COVER P-FRONT;LS20HAB (S/M 203B),AB ...3 M0112 BN63-02258F COVER-FRONT;LS20HAB (S/M203B),ABS,T2.2,H S.N.A ...3 M0145...
  • Page 48 6 Electrical Parts List Level Loc. No. Code No. Description & Specification Q'ty SA/SNA ..4 D103 0401-001056 DIODE-SWITCHING;MMBD4148SE,100V,200mA,SO ..4 D104 0401-001056 DIODE-SWITCHING;MMBD4148SE,100V,200mA,SO ..4 D105 0401-001056 DIODE-SWITCHING;MMBD4148SE,100V,200mA,SO ..4 D106 0401-001056 DIODE-SWITCHING;MMBD4148SE,100V,200mA,SO ..4 D107 0401-001056 DIODE-SWITCHING;MMBD4148SE,100V,200mA,SO ..4 D108 0401-001056 DIODE-SWITCHING;MMBD4148SE,100V,200mA,SO ..4 D110 0401-001056 DIODE-SWITCHING;MMBD4148SE,100V,200mA,SO ..4...
  • Page 49 6 Electrical Parts List Level Loc. No. Code No. Description & Specification Q'ty SA/SNA ..4 R201 2007-000082 R-CHIP;3.3Kohm,5%,1/10W,TP,1608 ..4 R202 2007-000082 R-CHIP;3.3Kohm,5%,1/10W,TP,1608 ..4 R311 2007-000083 R-CHIP;3Kohm,5%,1/10W,TP,1608 ..4 R330 2007-000083 R-CHIP;3Kohm,5%,1/10W,TP,1608 ..4 R331 2007-000083 R-CHIP;3Kohm,5%,1/10W,TP,1608 ..4 R307 2007-000084 R-CHIP;4.7Kohm,5%,1/10W,TP,1608 ..4 R310 2007-000084 R-CHIP;4.7Kohm,5%,1/10W,TP,1608 ..4...
  • Page 50 6 Electrical Parts List Level Loc. No. Code No. Description & Specification Q'ty SA/SNA ..4 C317 2203-000975 C-CER,CHIP;47nF,10%,25V,X7R,TP,1608,- ..4 C607 2203-001652 C-CER,CHIP;470nF,+80-20%,16V,Y5V,1608 ..4 C105 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 ..4 C106 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 ..4 C110 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 ..4 C111 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 ..4 C112 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 ..4...
  • Page 51 CBF-POWER CORD;DT,EU,FP3/YES,IEC320 C13/ ...3 T0524 6902-000110 BAG PE;LDPE,T0.05,W250,L400,TRP,28,2 S.N.A ...3 ACCESSORY BH68-70448A CARD-01;TFT LCD,SRC,RUSSIA,S/W,120,W210* S.N.A ...3 T0059 BN68-00907A MANUAL FLYER-CARD;COMM,SAMSUNG,18 LANG,E S.N.A ...3 M0215 BN96-03326A ASSY MANUAL P-IB+QSG;203B,SyncMaster,W/W S.N.A ..4 BH68-00376L MANUAL FLYER-04,QSG;LCDQUICK SETUP GUIDE S.N.A ..4 BN59-00527A S/W DRIVER-00,IB;203B,W/W,SyncMaster,Hay S.N.A...

  • Page 52: W W Iring Diagram

    8 Wiring Diagram 8 Wiring Diagram Connected to the I/P board Connected to the Panel through the LVDS cable For test(not used) For DVI signal For function key For Analog signal...
  • Page 53 8 Wiring Diagram Memo...
  • Page 54 9 Schematic Diagrams 9 Schematic Diagrams - This Document can not be used without Samsung s authorization. 9-1 Schematic Diagrams(1) CN102 IP Board connection +14V_INV +13V_IN +5V_IN Mendell only BD305,BD306 C118 C110 C119 C111 C112 C113 C114 C115 C116 C117...
  • Page 55 9 Schematic Diagrams...
  • Page 56 9 Schematic Diagrams 9-2 Schematic Diagrams(2) +3.3V_DVDD +3.3V_DVDD R300 1/10W Mendell ANION OPTION 2.2Kohm C300 10nF DGND +3.3VA_RPLL +5V_IN +5V_IN +1.8V_DVDD C302 C303 10pF R308 R306 10pF 10Kohm 1Kohm R303 +1.8V_AVDD 2.2Kohm XREF DEFAULT_NET_TYPE 14.31818MHz +3.3V_DVDD X300 +3.3VA_LV +3.3V_AVDD +3.3VA_RPLL DGND BL_ADJ_PWM XREF...
  • Page 57 9 Schematic Diagrams...

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