Samsung 205BW manual

SERVICE Manual LCD Monitor F ashion F ea ture L CD-Monitor Chassis LHA20WS Model 205BW - Premium HAS application(Lift 80mm) - Magic Rotation application (Auto pivot Delete) - Embeded Power, Mechanical S/W application[...]

ii Copyright © 2006 by Samsung Electronics Co., Ltd. All rights reserved. This manual may not, in whole or in part, be copied, photocopied, reproduced, translated, or converted to any electronic or machine readable form without prior written permission of Samsung Electronics Co., Ltd. LHA20WS Service Manual First edition March 2006. Printed in Kor[...]

1 1 . P recautions ……………………………………………………………………………………………………………………………………… 1 1 -1 1-1 Safety Precautions ……………………………………………………………………………………………………………………… 1-1 1-2 Ser[...]

8 8 . Wiring Diagram ………………………………………………………………………………………………………………………………… 8 8 -1 9. S S chematic Diagrams …………………………………………………………………………………………………………………………… 9 9 -1 [...]

Samsung Electronics Co.,Ltd. 416, Maetan-3Dong, Yeongtong-Gu, Suwon City, Gyeonggi-Do, Korea, 443-742 Printed in Korea P/N : BN82-00136G-00 URL : http://itself.sec.samsung.co.kr/ -This Service Manual is a property of Samsung Electronics Co., Ltd. Any unauthorized use of Manual can be punished under applicable International and/or domestic law.[...]

10 Operating Instructions and Installation 10-1 10 Oper a ting Instr uctions and Installation 10-1 F r ont 1. Menu button Opens the OSD menu. Also use to exit the OSD menu or return to the previous menu. 2. MagicBright button MagicBright is a new feature providing optimum viewing environment depending on the contents of the image you are watching. [...]

10 Operating Instructions and Installation 10-2 1. POWER S/W : Switch the monitor on and off. 2. POWER IN : Power cord, plugs into monitor and wall receptacle. 10-2 R ear 4. Enter button / Source button Activates a highlighted menu item. / Push the 'SOURCE', then selects the video signal while the OSD is off. (When the source button is pr[...]

10 Operating Instructions and Installation 10-3 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 when using it in a public place. (The locking device has to be purchased separately.) Stand Stopper : Remve the f[...]

10 Operating Instructions and Installation 10-4 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. Remove four screws(A) and then remove the Stand from the LCD monitor.[...]

10 Operating Instructions and Installation 10-5 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. Remove four screws and then remove the stand from the LCD monitor. 4. Align the mounting interface Pad with th[...]

Memo 10 Operating Instructions and Installation 10-6[...]

12 PCB Daigram 12-1 12 PCB Diag ram[...]

12 PCB Diagram 12-2 Memo[...]

11 Disassembly and Reassembly 11-1 11 Disassembl y and R eassembl y This section of the service manual describes the disassembly and reassembly procedures for the LHA20WS TFT-LCD monitors. WARNING: This monitor contains electrostatically sensitive devices. Use caution when handling these components. 11-1 Disassembly Cautions: 1. Disassembly stand o[...]

11 Disassembly and Reassembly 11-2 11-2 R eassembly Reassembly procedures are in the reverse order of disassembly procedures. 3. Separate cable Main Board and Separate screw between Shield PCB and Bracket PCB.(2 point) 4. Separate screw Between Shield PCB and Panel. (4 point) 5. Separate harness of the Panel with the IP Borad with the Main Board.[...]

13 Circuit Descriptions 13-1 13 Cir cuit Descriptions 13-1 Block description[...]

13 Circuit Descriptions 13-2 13-2 Block operating No Feature Description Scaler Integrate ADC and TMDS, Scaling part. DDR memory Save frame information that SCALER needed . Microcontroller. Micom control all function of monitor. Scaler DDR MEMORY MICOM 1 2 3 Analog signal from the PC is changed to digital signal using the A/D converter integrated i[...]

- TFT-LCD (Thin film Transistor Liquid Crystal Display) ADC(Analog to Digital Converter) This is a circuit that converts from analog signal to digital signals. - PLL(Phase Locked Loop) During progressing ADC, Device makes clock synchronizing HSYNC with Video clock - Inverter Device that supplies Power to LCD panel lamp. This device generates about [...]

14 Reference Infomation 14-2 - 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[...]

- Connecting the Monitor 14 Reference Infomation 14-3 1. 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. 2-2. [...]

14 Reference Infomation 14-4 Sync Type Pin No. 15-Pin D-Sub Signal Cable Connector Separate Composite 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Red Green Blue GND DDC Return (GND) GND-R GND-G GND-B DDC Power Input (+5V) Self Raster GND Bi-Dr Data (SDA) H-Sync. V-Sync. DDC Clock (SCL) Red Green Blue GND DDC Return (GND) GND-R GND-G GND-B DDC Power Input ([...]

14 Reference Infomation 14-5 Separate Sync 14-3 Timing Char t C D A O E B P Video Sync Sync Video Q R S A : Line time total B : Horizontal sync width O : Frame time total P : Vertical sync width C : Back porch D : Active time Q : Back porch R : Active time E : Front porch S : Front porch H/V Composite Sync Sync-on-Green 79.975 12.504 1.067 1.837 9.[...]

14 Reference Infomation 14-6 14-4 Preset Timing Modes Sync Polarity (H/V) Pixel Clock (MHz) Vertical Frequency (Hz) Horizontal Frequency (kHz) Display Mode MAC, 640 x 480 35.000 66.667 30.240 -/- MAC, 832 x 624 49.726 74.551 57.284 -/- IBM, 640 x 350 31.469 70.086 25.175 +/- IBM, 640 x 480 31.469 59.940 25.175 -/- IBM, 720 x 400 31.469 70.087 28.32[...]

14-5 Panel Description 14 Reference Infomation 14-7 SEC LT140X1-002 BN07-00004A SA BN68-00239H - SEC LT150XS-L01 BN07-00009A SB - SEC LT150XS-L01-B BN07-00022A SC - SEC LTM150XS-L02 BN07-00005A SD - SEC LT181E2-132 BN07-00001A SE - SEC LT150XS-T01 BN07-00010A SF - SEC LTM181E3-132 BN07-00019A SG - SEC LT170E2-131 BN07-10001D SH - SEC LT181E2-131 BN[...]

14 Reference Infomation 14-8 SEC LTA460H1-L01 BN07-00157A E22 "creat panel code for AMLCD 46"" TV " SEC LTM170EU-L11 BN07-00160A E23 "creat new panel code for AMLCD 17"" (Panel only for TCO03)" SEC LTM240W1-L03 BN07-00134B E24 "24"" panel ZPD code derivation" SEC LTM190E4-L01 BN07-00145B E[...]

14 Reference Infomation 14-9 TORISAN TM290WX-71N31 BN07-00115A RN "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 RR "Development TORISAN 22"" TV PANEL (ZPD)" [...]

Memo 14 Reference Infomation 14-10[...]

4 Troubleshooting 4-1 4 T roubleshooting 4-1 No P o wer Does proper DC 14 V appear at Pin 1,2,5 of CN600? Check the IP Board. There is no light in the power indicator. Check IC200 and IC301. Yes No Does proper DC 5V appear at Output of IC302? Check the IC302 Yes No Does proper DC 3.3V appear at Pin 3 of the IC600? Check the IC600. No Yes Yes Does p[...]

4 Troubleshooting 4-2 WA VEFORMS 2 1 3 4[...]

4 Troubleshooting 4-3 Is pin9 of CN500(BKLT_EN)high(3.3V)? 4-2 No Video (PC Analog Signal) 5 Check TFT_LCD panel or inverter and connection between then. Yes No Does the analog video signal appear at R134, 136, 138 (Red,Green,Blue)? Check pc signal. Yes No Does the X300 oscilate Properly? Check the X300. No Yes Does the proper clock pules appear at[...]

4 Troubleshooting 4-4 WA VEFORMS 6 5 8 7[...]

4 Troubleshooting 4-5 Is Pin9 of CN500(BKLT_EN)high(3.3V)? 4-3 No Video (PC Digital Signal) 1 Check TFT_LCD panel or inverter and connection between then. Yes No Does the Digital video signal appear at R100 ~ R107? Check PC signal. Yes No Does the proper clock pules appear at Pin6,7 of the CN400? Check IC300. No 8 9 Replace LCD Panel. Yes[...]

4 Troubleshooting 4-6 WA VEFORMS 8 1 9[...]

3 Alignments and Adjustments 3-1 3-1 R equired Equipment The following equipment is necessary for adjusting the monitor:  Computer with Windows 95, Windows 98, Windows NT, Windows 2000, or Windows XP.  MTI-2031 DDC MANAGER JIG 3-2 Automa tic Color Adjustment To Analog video, In 16gray or any pattern using black and white and any mode.(16gray [...]

3 Alignments and Adjustments 3-2 3-4 Ser vice Function Spec. 3-4-1 How to Display Ser vice Function OSD 1. After setting both brightness and contrast to '0' push the 'enter' button more than 5 seconds. 2. service function appear as below . 3-4-2 How to Control Ser vice Function OSD 1. Monitor On Time : Power on time 2. Panel Cyc[...]

3 Alignments and Adjustments 3-3 3-5 Hidden K ey list No 1. Hidden Service Function -. After setting brightness and contrast '0' push the "Enter" button more than 5 seconds. -. Service Function appear. 2. Factory Reset -. While Menu is opened(any menu), press "enter" key over 5 seconds. -. Screen is flashing, then all [...]

3 Alignments and Adjustments 3-4 3-6 DDC Input Method(W indo ws Pr ogr am) 1. Winddc.exe Program install in PC 2. Cilck the Winddc icon. 3. File open. 4. Select Port#1 Load DDC fileFile Name -. "SM205BWA.ddc" -. "SM205BWD.ddc" Click Next(OK) button. After change a Main Board ,DDC input shpuld be done via DDC control JIG. Connect[...]

3 Alignments and Adjustments 3-5 3-7 Execution Items after replacing the main boar d After Replacing the Maing Board 1. Auto Calibration 2. EDID installation(Analog and Digital) 3. Factory Reset 5: Input a monitor serial number and push the enter key. After Analog input, Please do # 2 ~ 5 when digital input.[...]

Memo 3 Alignments and Adjustments 3-6[...]

6 Electrical P ar ts List - You can search for updated part codes through ITSELF web site. URL : http://itself.sec.samsung.co.kr/ 6-1 LS20HAWCSZ/EDC P ar ts List 6 Electrical Parts List 6-1 Level Loc. No. Code No. Description & Specification Q'ty SA/SNA LS20HAWCSZ/EDC 205BW,WPA1/S20B2-LHA,20,LCD-MO,NETHERLAN 0.1 M0001 BN90-00900G ASSY COVE[...]

6 Electrical Parts List 6-2 Level Loc. No. Code No. Description & Specification Q'ty SA/SNA ...3 T0132 BN73-00077A RUBBER FOOT;MATISSE,BUMPON,¨ª13.5,T2.0,6 4 S.N.A ...3 T0081 BN73-00085A RUBBER CUSHION;MATISSE,¨ª4.5(IN SIDE),CL 1 S.N.A ...3 M0007 BN96-01524A ASSY STAND P-STOPPER;MJ17BS,SUS T1.0,L26 1 S.N.A ...3 M0126 BN96-02310A ASSY S[...]

....4 D231 0403-001411 DIODE-ZENER;-,5.49-5.73V,200mW,SOD-323,T 1 S.A ....4 D221 0406-001061 DIODE-TVS;MMQA5V6T3,5.32/5.6/5.88V,24W,S 1 S.A ....4 D232 0406-001061 DIODE-TVS;MMQA5V6T3,5.32/5.6/5.88V,24W,S 1 S.A ....4 ZD200 0406-001061 DIODE-TVS;MMQA5V6T3,5.32/5.6/5.88V,24W,S 1 S.A ....4 Q201 0501-000342 TR-SMALL SIGNAL;KSC1623-Y,NPN,200mW,SOT- 1 S.A[...]

6 Electrical Parts List 6-4 Level Loc. No. Code No. Description & Specification Q'ty SA/SNA ....4 R311 2007-000083 R-CHIP;3Kohm,5%,1/10W,TP,1608 1 S.A ....4 R330 2007-000083 R-CHIP;3Kohm,5%,1/10W,TP,1608 1 S.A ....4 R331 2007-000083 R-CHIP;3Kohm,5%,1/10W,TP,1608 1 S.A ....4 R300 2007-000084 R-CHIP;4.7Kohm,5%,1/10W,TP,1608 1 S.A ....4 R307 [...]

....4 C201 2203-000257 C-CER,CHIP;10nF,10%,50V,X7R,1608 1 S.A ....4 C202 2203-000257 C-CER,CHIP;10nF,10%,50V,X7R,1608 1 S.A ....4 C300 2203-000257 C-CER,CHIP;10nF,10%,50V,X7R,1608 1 S.A ....4 C313 2203-000257 C-CER,CHIP;10nF,10%,50V,X7R,1608 1 S.A ....4 C316 2203-000257 C-CER,CHIP;10nF,10%,50V,X7R,1608 1 S.A ....4 C319 2203-000257 C-CER,CHIP;10nF,1[...]

6 Electrical Parts List 6-6 Level Loc. No. Code No. Description & Specification Q'ty SA/SNA ....4 C653 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 1 S.A ....4 C304 2203-005065 C-CER,CHIP;1000nF,+80-20%,10V,Y5V,1608 1 S.A ....4 C305 2203-005065 C-CER,CHIP;1000nF,+80-20%,10V,Y5V,1608 1 S.A ....4 C309 2203-005065 C-CER,CHIP;1000nF,+80-20%,1[...]

....4 T0081 BN59-00509C S/W DRIVER-06,IB;203BW,W/W,SyncMaster,Ha 1 S.N.A ...3 ACCESSORY BN68-01237A MANUAL FLYER-QSG;COMM,W/W(L12),Mojo 100g 1 S.N.A ...3 ACCESSORY BH68-00633B MANUAL FLYER-00,WARRANTY CARD;comm,Samsu 1 S.N.A ...3 ACCESSORY BN68-01118B MANUAL-01,TCO03 CARD;COMM,W/W,Mojo 100g, 1 S.N.A 0.1 M0003 BN92-01728D ASSY BOX;LS20HAWCSQ/EDC 1 S[...]

6 Electrical Parts List 6-8 Memo[...]

7 Block Diagrams 7-1 7 Bloc k Dia gr am[...]

7 Block Diagrams 7-2[...]

8 Wiring Diagram 8-1 8 W iring Diag ram Connected to the I/P board Connected to the Panel through the L VDS cable For DVI signal For Analog signal For function key For test(not used)[...]

8 Wiring Diagram 8-2 Memo[...]

1 Precautions 1-1 1-1-1 War nings 1. For continued safety, do not attempt to modify the circuit board. 2. Disconnect the AC power and DC power jack before servicing. 1-1-2 Ser vicing the L CD Monitor 1. When servicing the LCD Monitor, Disconnect the AC line cord from the AC outlet. 2. It is essential that service technicians have an accurate voltag[...]

1 Precautions 1-2 1-2-1 General Ser vicing Precautions 1. Always unplug the unit’s AC power cord from the AC power source and disconnect the DC Power Jack before attempting to: (a) remove or reinstall any component or assembly, (b) disconnect PCB plugs or connectors, (c) connect a test component in parallel with an electrolytic capacitor. 2. Some[...]

1 Precautions 1-3 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. Do not place the product in areas with poor ventilation such as a bookshelf or closet. The increased i[...]

1 Precautions 1-4 Memo[...]