Samsung 203B manuale d’uso

SERVICE Manual LCD Monitor F ashion F ea ture L CD-Monitor Chassis LHA20BS Model 203B - Premium HAS application(Lift 80mm) - Magic Rotation application (Auto pivot Delete) - Embeded Power, Mechanical S/W application[...]

ii Copyright © 2005 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. LHA20BS Service Manual First edition January 2006. Printed in K[...]

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

9 9 . Schema tic Diagrams …………………………………………………………………………………………………………………………… 9 9 -1 9-1 Schematic Diagrams ……………………………………………………………………………………………………………………… 9-1 9-2 Schemati[...]

Samsung Electronics Co.,Ltd. 416, Maetan-3Dong, Yeongtong-Gu, Suwon City, Gyeonggi-Do, Korea, 443-742 Printed in Korea P/N : BN82-00136F-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 Installa tion 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[...]

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 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, b[...]

11 Disassembly and Reassembly 11-2 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 Disassembly and Reassembly 11-3 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. Description Picture Description 11-2 R eassembl y Reassembly procedures are in the reverse order of disassembly procedures.[...]

Memo 11 Disassembly and Reassembly 11-4[...]

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[...]

2 Product Specifications 2-1 2 Pr oduct Specifica tions 2-1 F ashion F eature -. Premium HAS application(Lift 80mm) -. Magic Rotation application(Auto pivot Delete) -. Embeded Power, Mechanical S/W application 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 F[...]

2 Product Specifications 2-2 2-3 LS20BRD fea tur e No Feature Feature Operating method If 204B turns on in some resolution for the first time, it can execute Auto adjustment automatically for the high Quality 204B can check the change of Source Automatically and change the source to the active Input 204B supports Wall mount(100 X 100) 204B supports[...]

2 Product Specifications 2-3 2-4 Spec Comparison Model Design  DE̅  NT 0 8IFO.POJUPSJTSPUBUFEBT1JWPU TFOTPSJTBQQMJFEUP1#"4DSFFOJT DIBOHFEBVUPNBUJDBMMZ 7FS 0 TUFQT 5FYU*OUFSOFU4QPSUT.PWJF (BNF$VTUPN -)&qu[...]

2 Product Specifications 2-4 2-5 Option Specification Item Item Name CODE.NO Remark Quick Setup Guide BN68-00376L BH68-00261F BN59-00480H BN39-00244B 3903-000085 Warranty Card (Not available in all locations) User's Guide, Monitor Driver, MagicTune Ş software D-Sub(15 Pin) Cable Power Cord BN39-00246F Sold separately DVI Cable[...]

4 Troubleshooting 4-1 4 T roubleshooting 4-1 No P o wer Does proper DC 14 V appear at Pin 5,6,7 of CN101? Check the IP Board. There is no light in the power indicator. Check IC201 and IC302. Yes No Does proper DC 5V appear at Output of IC203? Check the IC 203 Yes No Does proper DC 3.3V appear at Pin 4 of the IC403? Check the IC 403. No Yes Does pro[...]

4 Troubleshooting 4-2 WA VEFORMS 2 1 4 3 5[...]

4 Troubleshooting 4-3 Is pin9 of CN501(BKLT_EN)high(3.3V)? 4-2 No Video (PC Analog Signal) 6 Check TFT_LCD panel or inverter and connection between then. Yes No Does the analog video signal appear at R101,105, 108 (Red,Green,Blue)? Check pc signal. Yes No Does the X201 and X200 oscilate Properly? Check the X200, IC201. No Yes Does the proper clock [...]

4 Troubleshooting 4-4 WA VEFORMS 7 6 10 8[...]

4 Troubleshooting 4-5 Is Pin9 of CN501(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 R129~R136? Check PC signal. Yes No Does the proper clock pules appear at Pin6,7 of the CN201? Check IC301 and 302. No 10 11 Replace LCD Panel. Yes[...]

4 Troubleshooting 4-6 WA VEFORMS 10 1 11[...]

5 Exploded View & Parts List 5-1 5 Exploded View and Par ts 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) T0003 T0022 M0145 M01 12 M0215 M0006 M0107 M0014 M0174 M0013 M0006 M0003 M0013[...]

5 Exploded View & Parts List 5-2 Location.No CODE-NO SPECIFICA TION & DESCRIPTION Q'TY SA/SNA REMARK T0003 BN96-02834G ASSY COVER P-FRONT;LS20HAB (S/M 203B),AB 1 S.A M01 12 BN63-02258F COVER-FRONT;LS20HAB (S/M203B),ABS,T2.2,H 1 S.N.A T0022 BN64-00377B KNOB CONTROL;HA17TS,PC CLEAR,T2.1,9,1 12, 1 S.N.A M0145 BN96-02474C ASSY BOARD P-FUNC[...]

5 Exploded View & Parts List 5-3 5-2 LHA20BS(LS20HABESQ/EDC) Exploded View(SLIDING HAS) T0003 M01 12 T0022 M0145 M0215 1 M0014 M0174 M0006 M0107 M00006 M0003 2 3[...]

5 Exploded View & Parts List 5-4 Location.No CODE-NO SPECIFICA TION & DESCRIPTION Q'TY SA/SNA REMARK T0003 BN96-02834G ASSY COVER P-FRONT;LS20HAB (S/M 203B),AB 1 S.A M01 12 BN63-02258F COVER-FRONT;LS20HAB (S/M203B),ABS,T2.2,H 1 S.N.A T0022 BN64-00377B KNOB CONTROL;HA17TS,PC CLEAR,T2.1,9,1 12, 1 S.N.A M0145 BN96-02474C ASSY BOARD P-FUNC[...]

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 LHA20BS Par ts List(ROUND SIMPLE) 6 Electrical Parts List 6-1 Level Loc. No. Code No. Description & Specification Q'ty SA/SNA 0 LS20HABKBQ/XAA 203B,SPA1/S20B1-LHA,20,LCD-MO,UNITED STA 0.1 M0001 BN90-00908A A[...]

6 Electrical Parts List 6-2 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 1 S.A ....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;MMQA5V[...]

....4 R221 2007-000090 R-CHIP;10Kohm,5%,1/10W,TP,1608 1 S.A ....4 R230 2007-000090 R-CHIP;10Kohm,5%,1/10W,TP,1608 1 S.A ....4 R231 2007-000090 R-CHIP;10Kohm,5%,1/10W,TP,1608 1 S.A ....4 R232 2007-000090 R-CHIP;10Kohm,5%,1/10W,TP,1608 1 S.A ....4 R301 2007-000090 R-CHIP;10Kohm,5%,1/10W,TP,1608 1 S.A ....4 R304 2007-000090 R-CHIP;10Kohm,5%,1/10W,TP,1[...]

6 Electrical Parts List 6-4 Level Loc. No. Code No. Description & Specification Q'ty SA/SNA ....4 C310 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 1 S.A ....4 C322 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 1 S.A ....4 C610 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 1 S.A ....4 C611 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 1 S[...]

..2 T0376 6902-000379 BAG AIR;LDPE,T0.2,W1000,L1800,TRP,-,-- 0.002 S.N.A ..2 T0524 6902-000520 BAG PE;HDPE/NITRON(DOUBLE),T0.015/T0.5(D 1 S.N.A ..2 P/M 6902-000604 BAG WRAPPING;LDPE,T0.02,W500,L10000,TRP, 1.38 S.N.A ..2 M0081 6902-000609 BAG ROLL;LDPE,T0.05,W2400,L1000,TRP,-,- 0.028 S.N.A 0.1 M0045 BN92-01720T ASSY ACCESSORY;LS20HABKBQ/XAA 1 S.N.A [...]

6 Electrical Parts List 6-6 Level Loc. No. Code No. Description & Specification Q'ty SA/SNA LS20HABESQ/EDC 203B,SPA1/S20B1-LHA,20,LCD-MO,NETHERLAND 0.1 M0001 BN90-00908B ASSY COVER FRONT;CTZ-LS20HABBSQ/EDC,203B 1 S.N.A ..2 T0003 BN96-02834G ASSY COVER P-FRONT;LS20HAB (S/M 203B),AB 1 S.A ...3 M0112 BN63-02258F COVER-FRONT;LS20HAB (S/M203B),[...]

....4 D103 0401-001056 DIODE-SWITCHING;MMBD4148SE,100V,200mA,SO 1 S.A ....4 D104 0401-001056 DIODE-SWITCHING;MMBD4148SE,100V,200mA,SO 1 S.A ....4 D105 0401-001056 DIODE-SWITCHING;MMBD4148SE,100V,200mA,SO 1 S.A ....4 D106 0401-001056 DIODE-SWITCHING;MMBD4148SE,100V,200mA,SO 1 S.A ....4 D107 0401-001056 DIODE-SWITCHING;MMBD4148SE,100V,200mA,SO 1 S.A [...]

6 Electrical Parts List 6-8 Level Loc. No. Code No. Description & Specification Q'ty SA/SNA ....4 R201 2007-000082 R-CHIP;3.3Kohm,5%,1/10W,TP,1608 1 S.A ....4 R202 2007-000082 R-CHIP;3.3Kohm,5%,1/10W,TP,1608 1 S.A ....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 R33[...]

....4 C317 2203-000975 C-CER,CHIP;47nF,10%,25V,X7R,TP,1608,- 1 S.A ....4 C607 2203-001652 C-CER,CHIP;470nF,+80-20%,16V,Y5V,1608 1 S.A ....4 C105 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 1 S.A ....4 C106 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 1 S.A ....4 C110 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 1 S.A ....4 C111 2203-005005 C-CE[...]

6 Electrical Parts List 6-10 Level Loc. No. Code No. Description & Specification Q'ty SA/SNA ....4 T0568 3301-001145 BEAD-SMD;60ohm,4516,TP,70ohm/45MHz,82ohm 1 S.N.A ....4 T0568 3301-001145 BEAD-SMD;60ohm,4516,TP,70ohm/45MHz,82ohm 1 S.N.A ....4 T0568 3301-001145 BEAD-SMD;60ohm,4516,TP,70ohm/45MHz,82ohm 1 S.N.A ....4 T0568 3301-001145 BEAD-[...]

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[...]

9 Schematic Diagrams 9-1 9 Schema tic Dia gr ams - This Document can not be used without Samsungs authorization. Close to respective power pins Close to respective power pins DELETE MLCC BD301,BD302,BD303,BD304 IP Board connection 203B only BEAD-SMD,60ohm Mendell only 203B only BD305,BD306 DELETE Close to respective power pins Close to respectiv[...]

9 Schematic Diagrams 9-2 1 6 7[...]

9 Schematic Diagrams 9-3 RxO3- RxO3+ GND RxE3- GND 5V RxE0- RxO2- NC 5V To Function PCB To Function PCB Mendell ANION OPTION RxE1+ RxE3+ RxE0+ GND RxO1- DELETE RxO0- RxO1+ RxE2- RxOC- RxOC+ GND RxE2+ RxEC- RxEC+ RxO2+ RxE1- GND 5V GND 5.32V ~ 5.88 RxO0+ 205BW OPTION 1 +3.3VA_LV XREF XREF 1 XREF XREF 1 +5V_PANEL_IN U651 3Kohm 10V 1uF C311 R305 R301 [...]

9 Schematic Diagrams 9-4 2 3 8 4 10 5[...]