Samsung 203B Service Manual
Samsung 203B - SyncMaster - 20" LCD Monitor Manual
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UPC - 729507703824
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Samsung 203B manual content summary:
- Samsung 203B | Service Manual - Page 1
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 - Samsung 203B | Service Manual - Page 2
of Samsung Electronics Co., Ltd. LHA20BS Service Manual First edition January 2006. Printed in Korea. ii Trademarks Samsung is the registered trademark of Samsung Electronics Co., Ltd. LHA20BS and MacMaster Cable Adapter are trademarks of Samsung Electronics Co., Ltd. Macintosh, Power Macintosh - Samsung 203B | Service Manual - Page 3
Color Adjustment ...3-1 3-3 DDC EDID Data Input ...3-1 3-4 Service Function Spec...3-2 3-5 Hidden Key list ...3-3 3-6 EDID Installation with Windows Program ...3-4 3-7 Execution Items after replacing the main board 3-4 4. Troubleshooting ...4-1 4-1 No Power ...4-1 4-2 No Video (PC Analog Signal - Samsung 203B | Service Manual - Page 4
Contents 9. Schematic Diagrams ...9-1 9-1 Schematic Diagrams ...9-1 9-2 Schematic Diagrams ...9-3 10. Operating Instructions and Installation ...10-1 10-1 Front ...10-1 10-2 Rear ...10-2 10-3 Using the Stand ...10-4 11. Disassembly and Reassembly ...11-1 11-1 Disassembly ...11-1 11-2 Reassembly ... - Samsung 203B | Service Manual - Page 5
-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. Samsung Electronics Co.,Ltd. 416, Maetan-3Dong, Yeongtong-Gu, Suwon City, Gyeonggi-Do, Korea, 443-742 Printed in Korea P/N : BN82- - Samsung 203B | Service Manual - Page 6
and Installation 10 Operating Instructions and Installation 10-1 Front 1. Menu button Opens the OSD menu. Also Movie : High brightness For watching motion pictures such as a DVD or Video CD. 3. Bright button When OSD is not on the screen, push the button to adjust brightness. 2,3. Adjust buttons - Samsung 203B | Service Manual - Page 7
as shown in the animated screen on the center. Auto adjustment allows the monitor to self-adjust to the incoming video signal. The values of fine, coarse and position are adjusted automatically. (Available in analog mode only) 6. Power button Use this button for turn the monitor on and off. 10 - Samsung 203B | Service Manual - 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 - Samsung 203B | Service Manual - Page 9
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. Remove four screws(A) and then remove the Stand from the LCD monitor - Samsung 203B | Service Manual - Page 10
10 Operating Instructions and Installation 10-3-2 Attaching a Base - This monitor accepts a 100mm x 100mm VESA-compliant mounting interface pad. 1 2 3 4 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 - Samsung 203B | Service Manual - Page 11
10 Operating Instructions and Installation Memo 10-6 - Samsung 203B | Service Manual - Page 12
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 - Samsung 203B | Service Manual - Page 13
11 Disassembly and Reassembly Description 3. Remove 1 screws from Lamp shield Picture Description 4. Disconnect a FUNCTION Wire from PCB ASSY. 5. Disconnect 4 Lamp Wire and Wire. 6. Disconnect a LVDS Wire from Panel. 11-2 - Samsung 203B | Service Manual - Page 14
4 hexa screws from PBA board which is connected PCB bracket. 11 Disassembly and Reassembly Picture Description 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 - Samsung 203B | Service Manual - Page 15
11 Disassembly and Reassembly Memo 11-4 - Samsung 203B | Service Manual - Page 16
13 Circuit Descriptions 13-1 Block description 13 Circuit Descriptions 13-1 - Samsung 203B | Service Manual - Page 17
needed . 3 MICOM Microcontroller. Micom control all function of monitor. Analog signal from the PC is changed to digital signal using integrated TMDS Block is operating and processing. MIcom control the all function of the monitor and OSD. DC/DC Block make a suitable voltages from output 14V of - Samsung 203B | Service Manual - Page 18
During progressing ADC, Device makes clock synchronizing HSYNC with Video clock - Inverter Device that supplies Power to LCD panel lamp. This device generates about 1,500~2,000V. - SMPS(Switching Mode Power Supply) Switching Mode Power supply. This design technology is used to step up/down the input - Samsung 203B | Service Manual - Page 19
This is a function that provides the best quality screen for the user by allowing the computer and the monitor to exchange information automatically. This monitor follows the international standard VESA DDC for the Plug & Play function. - Resolution The number of horizontal and vertical dots used - Samsung 203B | Service Manual - Page 20
, if you connect simultaneously both the D-Sub and DVI cables to one computer. - If you properly connect your monitor using the DVI connector but get a blank screen, check to see if the monitor status is set to analog. Press power button to have the monitor double-check the input signal source. 14-3 - Samsung 203B | Service Manual - Page 21
-Pin D-Sub Signal Cable Connector Separate 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) Composite Red 16 17 18 19 20 21 22 23 24 No Connection +5V_M Self Raster +5V_M Rx0Rx0+ NC No Connection No Connection NC - Samsung 203B | Service Manual - Page 22
14-3 Timing Chart - This section of the service manual describes the timing that the computer industry recognizes 3.813 1.589 31.778 3.813 1.589 26.667 2.032 3.810 26.400 3.200 2.200 21.333 1.616 3.232 20.677 2.092 2.462 16.660 1.219 2.235 11.852 1.037 2.296 12.504 1.067 1.837 D μsec E μ - Samsung 203B | Service Manual - Page 23
screen will be adjusted automatically. However, if the signal differs, the screen may go blank while the power LED is on. Refer to the video card manual and adjust the screen kHz Vertical Frequency Like a fluorescent lamp, the screen has to repeat the same image many times per second to display an - Samsung 203B | Service Manual - Page 24
- BN07-00010A SF - BN07-00019A SG - BN07-10001D SH - BN07-10001E SJ - BN07-00018A SK - BN07-00015A EW Color coordinates change for LCD TV BN07-00092A EX AMLCD BN07-00128A E10 "New Panel from AMLCDl, Specification : 6bit Driver IC" BN07-00143A E11 "Development new Panel - Samsung 203B | Service Manual - Page 25
code derivation AMLCD LTM170E8-L21 PVA ZPD new code derivation DISPLAY LCD AMLCD 20.1" Normal panel ZPD code derivation HAYDN 17" PZD code PANEL SPVA 90% new Panel AMLCD 40" 16:9 SPVA 90% new Panel "CPT 15"" Monitor new panel development" "17"" CPT NEW development panel" "17"" CPT ZPD panel code - Samsung 203B | Service Manual - Page 26
22"" TV PANEL (HPD)" 120V inverter Exclusive panel Torisan 6bit panel code PANEL Rome2 17" SXGA PVA MODE ZPD Panel 20.1" NARROW 21.3" NARROW "Development new panel for spec down grade) AUO 32" Grade new (Cosmetic spec down grade) AU Monitor 19" MVA new code derivation LCD TV VE project new LCD - Samsung 203B | Service Manual - Page 27
14 Reference Infomation Memo 14-10 - Samsung 203B | Service Manual - Page 28
(Auto pivot Delete) -. Embeded Power, Mechanical S/W application 2-2 Specifications Item Description LCD Panel Scanning Frequency Display Colors Maximum Resolution Input Signal Input Sync Signal TFT-LCD panel, RGB vertical stripe, normally black transmissive, 20-Inch viewable, 0.255 (H) x 0.255 - Samsung 203B | Service Manual - Page 29
2 Product Specifications 2-3 LS20BRD feature No Feature Feature If 204B turns on in some resolution for the first time, it can execute 1 Auto Auto Auto adjustment automatically for the high Quality 2 Auto Power 204B can check the change of Source on/off Automatically and change the source to - Samsung 203B | Service Manual - Page 30
2-4 Spec Comparison Model -)"#4 # Design 2 Product Specifications -4#3% # 4DSFFO4J[F #SJHIUOFTT DE̅ $POUSBTU 'BTU3FTQPOTF 5JNF NT .BHJD1JWPU 0 8IFO.POJUPSJTSPUBUFE BT1JWPU TFOTPSJTBQQMJFEUP1#" 4DSFFOJT DIBOHFEBVUPNBUJDBMMZ . - Samsung 203B | Service Manual - Page 31
2 Product Specifications 2-5 Option Specification Item Item Name Quick Setup Guide CODE.NO BN68-00376L Warranty Card (Not available in all locations) BH68-00261F User's Guide, Monitor Driver, MagicTuneŞ software BN59-00480H D-Sub(15 Pin) Cable BN39-00244B Power Cord 3903-000085 Remark - Samsung 203B | Service Manual - Page 32
is no light in the power indicator. 4 Troubleshooting Does proper DC 14 V 1 appear at Pin 5,6,7 of CN101? No Check the IP Board. Yes Does proper DC 5V No 2 appear at Output of Check - Samsung 203B | Service Manual - Page 33
4 Troubleshooting WAVEFORMS 1 2 3 4 5 4-2 - Samsung 203B | Service Manual - Page 34
TFT_LCD panel or inverter and connection between then. Yes Does the analog video signal No 7 appear at R101,105, 108 (Red,Green,Blue)? Yes 8 Does the X201 and X200 No oscilate Properly? Yes Does the proper clock pules No 10 appear at Pin6,7 of the CN201? Yes Replace LCD Panel. Check - Samsung 203B | Service Manual - Page 35
4 Troubleshooting WAVEFORMS 6 7 8 10 4-4 - Samsung 203B | Service Manual - Page 36
Video (PC Digital Signal) 4 Troubleshooting 1 Is Pin9 of CN501(BKLT_EN)high(3.3V)? Yes Does the Digital video 11 signal appear at R129~R136? Yes Does the proper clock pules 10 appear at Pin6,7 of the CN201? Yes Replace LCD Panel. No Check TFT_LCD panel or inverter and connection between then - Samsung 203B | Service Manual - Page 37
4 Troubleshooting WAVEFORMS 1 10 11 4-6 - Samsung 203B | Service Manual - Page 38
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 T0003 M0174 M0014 M0112 T0022 M0145 M0006 M0107 5 Exploded View & Parts List M0013 M0006 M0003 M0013 - Samsung 203B | Service Manual - Page 39
BN96-02332D SPECIFICATION & DESCRIPTION ASSY COVER P-FRONT;LS20HAB (S/M 203B),AB LCD-PANEL;M201P1-L01,Brahms,6Bit FRC,432 ASSY SHIELD P-COVER;LS20HAB (203B),SECC, SHIELD-COVER;S/M 203B,SECC,T1.0 ASSY PCB MAIN-CTZ,W/W;HA20BS* IP BOARD;IP-43130A,203B,3.8mA,7.0mA,47.0 ASSY COVER P-REAR;LS20HAB (203B - Samsung 203B | Service Manual - Page 40
5-2 LHA20BS(LS20HABESQ/EDC) Exploded View(SLIDING HAS) M0215 T0003 M0112 T0022 M0145 M0174 M0014 1 3 2 M0006 M0107 5 Exploded View & Parts List M00006 M0003 5-3 - Samsung 203B | Service Manual - Page 41
-02258F BN64-00377B BN96-02474C BN07-00268A BN96-03342A BN63-02518A BN94-00893H BN44-00137A BN63-02508C BN96-03811B SPECIFICATION & DESCRIPTION ASSY COVER P-FRONT;LS20HAB (S/M 203B),AB COVER-FRONT;LS20HAB (S/M203B),ABS,T2.2,H KNOB CONTROL;HA17TS,PC CLEAR,T2.1,9,112, ASSY BOARD P-FUNCTION;HAYDN,YWP - Samsung 203B | Service Manual - Page 42
web site. URL : http://itself.sec.samsung.co.kr/ 6-1 LHA20BS Parts List(ROUND SIMPLE Specification 203B,SPA1/S20B1-LHA,20,LCD-MO,UNITED STA ASSY COVER FRONT;CTZ-LS20HABKBQ/XAA,203B ASSY COVER P-FRONT;LS20HAB (S/M 203B MAIN;HAYDN,FR4,2L,MP1.0,0.6T,105*8,1 GUIDE-CONTROL;HA17T,ABS HB,T1.1,9,112,IV ASSY - Samsung 203B | Service Manual - Page 43
R325 2007-000084 ....4 R326 2007-000084 ....4 R327 2007-000084 ....4 R108 2007-000090 ....4 R127 2007-000090 ....4 R220 2007-000090 Description & Specification DIODE-ZENER;-,5.49-5.73V,200mW,SOD-323,T DIODE-ZENER;-,5.49-5.73V,200mW,SOD-323,T DIODE-TVS;MMQA5V6T3,5.32/5.6/5.88V,24W - Samsung 203B | Service Manual - Page 44
2203-005005 2203-005005 2203-005005 2203-005005 2203-005005 Description & Specification R-CHIP;10Kohm,5%,1/10W,TP,1608 R-CHIP;10Kohm,5%,1/10W,TP,1608 R-CHIP C0G,1608 C-CER,CHIP;47nF,10%,25V,X7R,TP,1608,C-CER,CHIP;470nF,+80-20%,16V,Y5V,1608 C-CER,CHIP;0.008nF,0.25pF,50V,NP0,TP,160 C-CER,CHIP;0.008nF - Samsung 203B | Service Manual - Page 45
BN92-01511C 0.1 M0113 BN92-01619Y ..2 T0376 6902-000061 Description & Specification C-CER,CHIP;100nF,10%,16V,X7R,1608 C-CER,CHIP;100nF,10 LCD CONTROLLER;GM5766-LF-AA,PQFP,128P IC-POSI.FIXED REG.;NCP1117DT18T5G,DPAK,3 C-POLYMER ,CHIP;100uF,20%,25V,-,TP,8.3x8 ASSY SHIELD P-COVER;LS20HAB (203B - Samsung 203B | Service Manual - Page 46
all, ASSY MANUAL P-IB+QSG;203B,SyncMaster,W/W MANUAL FLYER-04,QSG;LCDQUICK SETUP GUIDE S/W DRIVER-00,IB;203B,W/W,SyncMaster,Hay ASSY BOX;LS20HABKBQ/XAA UNIT-HANDLE PACKING;LXA410TLMU,PE,-,WHIT LEVER-TOP;LSD210TL,PE-LD,WHITE,TFT_LCD LEVER-BOTTOM;LSD210TL,PE-LD,WHITE,TFT-LC BOX-MONITOR;LS20HAB,SY-01 - Samsung 203B | Service Manual - Page 47
Description & Specification 203B,SPA1/S20B1-LHA,20,LCD-MO,NETHERLAND ASSY COVER FRONT;CTZ-LS20HABBSQ/EDC,203B ASSY COVER P-FRONT;LS20HAB (S/M 203B),AB COVER UL1571#30,4P,450mm, PCB MAIN;HAYDN,FR4,2L,MP1.0,0.6T,105*8,1 GUIDE-CONTROL;HA17T,ABS HB,T1.1,9,112,IV KNOB CONTROL;HA17TS,PC CLEAR,T2.1,9,112, - Samsung 203B | Service Manual - Page 48
2007-000074 ....4 R604 2007-000074 ....4 R306 2007-000078 ....4 R610 2007-000078 ....4 R109 2007-000080 ....4 R128 2007-000080 Description & Specification DIODE-SWITCHING;MMBD4148SE,100V,200mA,SO DIODE-SWITCHING;MMBD4148SE,100V,200mA,SO DIODE-SWITCHING;MMBD4148SE,100V,200mA,SO DIODE - Samsung 203B | Service Manual - Page 49
000384 ....4 C103 2203-000440 ....4 C122 2203-000626 Description & Specification R-CHIP;3.3Kohm,5%,1/10W,TP,1608 R-CHIP;3.3Kohm,5%,1/10W,TP,1608 50V,C0G,1608 C-CER,CHIP;100nF,+80-20%,25V,Y5V,1608 C-CER,CHIP;100nF,+80-20%,25V,Y5V,1608 C-CER,CHIP;100nF,+80-20%,25V,Y5V,1608 C-CER,CHIP;0.1nF,5%, - Samsung 203B | Service Manual - Page 50
X300 2801-003667 ....4 T0568 3301-001145 ....4 T0568 3301-001145 ....4 T0568 3301-001145 ....4 T0568 3301-001145 Description & Specification C-CER,CHIP;47nF,10%,25V,X7R,TP,1608,C-CER,CHIP;470nF,+80-20%,16V,Y5V,1608 C-CER,CHIP;100nF,10%,16V,X7R,1608 C-CER,CHIP;100nF,10%,16V,X7R,1608 - Samsung 203B | Service Manual - Page 51
POWER CORD;DT,EU,FP3/YES,IEC320 C13/ BAG PE;LDPE,T0.05,W250,L400,TRP,28,2 CARD-01;TFT LCD,SRC,RUSSIA,S/W,120,W210* MANUAL FLYER-CARD;COMM,SAMSUNG,18 LANG,E ASSY MANUAL P-IB+QSG;203B,SyncMaster,W/W MANUAL FLYER-04,QSG;LCDQUICK SETUP GUIDE S/W DRIVER-00,IB;203B,W/W,SyncMaster,Hay MANUAL FLYER-WARRANTY - Samsung 203B | Service Manual - Page 52
8 Wiring Diagram Connected to the I/P board For DVI signal 8 Wiring Diagram Connected to the Panel through the LVDS cable For test(not used) For Analog signal For function key 8-1 - Samsung 203B | Service Manual - Page 53
8 Wiring Diagram Memo 8-2 - Samsung 203B | Service Manual - Page 54
be used without Samsung s authorization. 9-1 Schematic Diagrams(1) CN102 MGND1 1 9 17 2 10 18 3 11 19 4 12 20 5 13 21 Board connection Mendell only BD305,BD306 203B only BD301,BD302,BD303,BD304 XREF +3.3V_AVDD TP1544 BD602 SUPLVAL Close to respective power pins 1 AGND MLCC C621 10uF 10V - Samsung 203B | Service Manual - Page 55
9 Schematic Diagrams 1 6 7 9-2 - Samsung 203B | Service Manual - Page 56
WP# SCK 4 5 GND SI 1 R323 10Kohm C310 100nF 16V DGND 11 DGND 9 Schematic Diagrams Mendell ANION OPTION XREF C B E 1 8 2 7 3 6 4 5 11 RxE1- 14 GND 15 RxE0+ 16 RxE0- 17 RxO3+ 18 RxO3- 19 RxOC+ 20 RxOC- 21 GND 22 RxO2+ 23 RxO2- 24 RxO1+ 25 RxO1- 26 RxO0+ - Samsung 203B | Service Manual - Page 57
9 Schematic Diagrams 2 3 4 5 8 10 9-4
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SERVICE
Manual
LCD Monitor
Fashion Feature
LCD-Monitor
Chassis
LHA20BS
Model
203B
- Premium HAS application(Lift 80mm)
- Magic Rotation application
(Auto pivot Delete)
- Embeded Power, Mechanical S/W
application