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TFT-LCD MONITORChassis ModelES15U* LTM1555(B)ES17U* LTM1755(B)ManualSERVICETFT-LCD MONITOR CONTENTS1. Precautions2. Product Specifications3. Disassemb

CONFIDENTIAL3 Disassembly and Reassembly3-2 LTM1555(B)/LTM1755(B)3-2 ReassemblyReassembly procedures are in the reverse order of dissasembly procedure

CONFIDENTIALLTM1555(B)/LTM1755(B) 4-14 Alignments and Adjustments4-1 General Alignment Instruction1. Usually, a color TV-VCR needs only slight touch-u

4-2 Adjustment Instruction4-2-1 Service Mode Screen1. Auto Color2. Options3. Reset4-2-2 Service function1. EEPROM Clear : Initially executed when repl

CONFIDENTIALLTM1555(B)/LTM1755(B) 5-15 Troubleshooting5-1 No PowerDoes proper DC 14 V appear atDC jack connected to CN12?Check SMPS PCB and Adapter.Ye

CONFIDENTIAL5 Troubleshooting5-2 LTM1555(B)/LTM1755(B)5-2 No Video (PC Signal)Power indicator is green.Does the signal appear at IC134, IC135, IC136 o

CONFIDENTIAL5 TroubleshootingLTM1555(B)/LTM1755(B) 5-3Does signal appear at<RA35~RA39, RA310>15”<RA35~RA39, RA310, RA313~RA318>17” of rela

CONFIDENTIAL5 Troubleshooting5-4 LTM1555(B)/LTM1755(B)Does the signal appear at Pin 67 (Tuner sound signal) and Pin 57, 56 (PC sound) and Pin 51, 50(V

CONFIDENTIALLTM1555(B)/LTM1755(B) 6-16 Exploded View and Parts List6-1-1 LTM1555(B)

6 Exploded View & Parts List6-2 LTM1555(B)/LTM1755(B)CONFIDENTIAL6-1-2 LTM1555(B) Front1010899153756255

LTM1555(B)/LTM1755(B) 6-36 Schematic DiagramsCONFIDENTIAL6-1-3 LTM1555(B) Rear

Samsung Electronics Co.,Ltd.416, Maetan-3Dong, Paldal-Gu, Suwon City, Kyungki-Do, Korea.Printed in KoreaP/N : BN82-00071A-00http://www.samsungmonitor.

6 Exploded View & Parts List6-4 LTM1555(B)/LTM1755(B)CONFIDENTIAL6-1-3 LTM1555(B) Stand4325671

LTM1555(B)/LTM1755(B) 6-56 Schematic DiagramsCONFIDENTIAL6-2-1 LTM1755(B)

6 Exploded View & Parts List6-6 LTM1555(B)/LTM1755(B)CONFIDENTIAL6-2-2 LTM1755(B) Front1010899153756255

LTM1555(B)/LTM1755(B) 6-76 Schematic DiagramsCONFIDENTIAL6-2-3 LTM1755(B) Rear

6 Exploded View & Parts List6-8 LTM1555(B)/LTM1755(B)CONFIDENTIAL6-2-3 LTM1755(B) Stand

CONFIDENTIALCIS BN94-00308A ASSY PCB MAIN ES15UO SNAC1 BN83-00081A CKD-BN44-00056A BN44-00056A,2203-000206 SNAC10 BN83-00086A CKD-BN44-00056A BN44-000

D12 BN83-00074A CKD-BN44-00056A BN44-00056A,0407-000114 SNAD13 BN83-00075A CKD-BN44-00056A BN44-00056A,0402-001110 SNAD14 BN83-00076A CKD-BN44-00056A

R27 BN83-00093A CKD-BN44-00056A BN44-00056A,2007-000092 SNAR28 BN83-00094A CKD-BN44-00056A BN44-00056A,2007-000102 SNAR29 BN83-00090A CKD-BN44-00056A

SH/PCB+SH/D_SUB6003-000117 SCREW-TAPTITE BH,+,B,M3,L6,ZPC(YEL),SWRCH18A SNAT1 BN83-00109A CKD-BN44-00056A BN44-00056A,LH26-00144A SNAT2 BN83-00109A CK

C114 2402-001042 C-AL,SMD 100uF,20%,16V,GP,TP,6.6x6.6x5.4mmC119 2402-000176 C-AL,SMD 10uF,20%,16V,GP,TP,4.3x4.3x5.4C12 2402-001081 C-AL,SMD 100uF,20%,

1-1-1 Warnings1. For continued safety, do not attempt to modify thecircuit board.2. Disconnect the AC power and DC Power Jackbefore servicing.1-1-2

C225 2203-000257 C-CERAMIC,CHIP 10nF,10%,50V,X7R,TP,1608C226 2203-000236 C-CERAMIC,CHIP 0.1nF,5%,50V,NP0,TP,1608C227 2203-000236 C-CERAMIC,CHIP 0.1nF,

C350 2203-000189 C-CERAMIC,CHIP 100nF,+80-20%,25V,Y5V,TP,1608,C351 2203-000189 C-CERAMIC,CHIP 100nF,+80-20%,25V,Y5V,TP,1608,C352 2203-000189 C-CERAMIC

C43 2203-000972 C-CERAMIC,CHIP 47nF,10%,16V,X7R,TP,1608C430 2203-000280 C-CERAMIC,CHIP 0.01nF,0.5pF,50V,NP0,TP,1608C431 2203-000998 C-CERAMIC,CHIP 0.0

C533 2203-000189 C-CERAMIC,CHIP 100nF,+80-20%,25V,Y5V,TP,1608,C534 2203-000189 C-CERAMIC,CHIP 100nF,+80-20%,25V,Y5V,TP,1608,C535 2203-000189 C-CERAMIC

C619 2203-000189 C-CERAMIC,CHIP 100nF,+80-20%,25V,Y5V,TP,1608,C62 2402-000176 C-AL,SMD 10uF,20%,16V,GP,TP,4.3x4.3x5.4C620 2203-000189 C-CERAMIC,CHIP 1

FT14 3301-001145 CORE-FERRITE BEAD AB,4.5x1.6x1.6mm,-,- SNAFT31 2901-001133 FILTER-EMI SMD 25V,0.15A,-,33pF,2x1.25x0.8mm,TPFT32 3301-001145 CORE-FERRI

L52 2703-001778 INDUCTOR-SMD 3.3UH,20%,3.2X2.5X2.2MML53 BN27-00007A COIL CHOKE-SMDDHB0504-100,RB15/17NS,10UH,°æ10%,-,0.08OHM,1.5A,DR5.8X4.5,20.5TS,6.0

R128 2007-000074 R-CHIP 100ohm,5%,1/16W,DA,TP,1608R13 2007-000124 R-CHIP 2.2Kohm,5%,1/16W,DA,TP,1608R130 2007-000074 R-CHIP 100ohm,5%,1/16W,DA,TP,1608

R240 2007-000084 R-CHIP 4.7Kohm,5%,1/16W,DA,TP,1608R241 2007-000084 R-CHIP 4.7Kohm,5%,1/16W,DA,TP,1608R242 2007-000084 R-CHIP 4.7Kohm,5%,1/16W,DA,TP,1

R330 2007-000074 R-CHIP 100ohm,5%,1/16W,DA,TP,1608R331 2007-000074 R-CHIP 100ohm,5%,1/16W,DA,TP,1608R332 2007-000074 R-CHIP 100ohm,5%,1/16W,DA,TP,1608

1-2-1 General Servicing Precautions1. Always unplug the unit’s AC power cord from theAC power source and disconnect the DC PowerJack before attemptin

R383 2007-001167 R-CHIP 75ohm,5%,1/16W,DA,TP,1608R384 2007-000072 R-CHIP 47ohm,5%,1/16W,DA,TP,1608R39 2007-000070 R-CHIP 0ohm,5%,1/16W,DA,TP,1608R41 2

CONFIDENTIALR461 2007-000090 R-CHIP 10KOHM,5%,1/16W,DA,TP,1608R462 2007-000090 R-CHIP 10KOHM,5%,1/16W,DA,TP,1608R464 2007-001167 R-CHIP 75ohm,5%,1/16W

R549 2007-000518 R-CHIP 2.7KOHM,5%,1/10W,DA,TP,2012R55 2007-000090 R-CHIP 10KOHM,5%,1/16W,DA,TP,1608R550 2007-000087 R-CHIP 6.8Kohm,5%,1/16W,DA,TP,160

- BN90-00195E ASSY STAND GH17LS SNASTD+C/R 6001-000154 SCREW-MACHINE BH,+,M4,L8,NI PLT,SM20C,-CIS BN75-00242A UNIT-STAND EOS 15AS/NS,-,ABS,-,SV-012P,-

CIS BH69-00457B PACKING-PAD GH15,FOAM,T3.0,930,1000 SNACIS BH69-30355E BAG-PE/N NK15,PE FOAM,0.5,650,650,NTR SNACIS BH69-40321C PACKING-EDGE SW4/YEL,2

CIS BN94-00320A ASSY PCB MAIN ES17UO SNAC115 2409-001044 C-ORGANIC 100UF,+-20%,16V,WT,TP,8X10.5,5C116 2409-001044 C-ORGANIC 100UF,+-20%,16V,WT,TP,8X10

BD221 3301-001163 CORE-FERRITE BEAD AB,80ohm,2x1.25x1mm,300mA,TP,FERRITE,0.08ohmBD222 3301-001163 CORE-FERRITE BEAD AB,80ohm,2x1.25x1mm,300mA,TP,FERRI

C153 2203-000189 C-CERAMIC,CHIP 100nF,+80-20%,25V,Y5V,TP,1608,C154 2203-000257 C-CERAMIC,CHIP 10nF,10%,50V,X7R,TP,1608C155 2203-000257 C-CERAMIC,CHIP

C3246 2402-000176 C-AL,SMD 10uF,20%,16V,GP,TP,4.3x4.3x5.4C3285 2402-000176 C-AL,SMD 10uF,20%,16V,GP,TP,4.3x4.3x5.4C329 2203-000189 C-CERAMIC,CHIP 100n

C378 2203-000257 C-CERAMIC,CHIP 10nF,10%,50V,X7R,TP,1608C3782 2402-000176 C-AL,SMD 10uF,20%,16V,GP,TP,4.3x4.3x5.4C379 2203-000257 C-CERAMIC,CHIP 10nF,

CONFIDENTIAL2 Product Specifications2-1 SpecificationsLCD Panel TFT-LCD panel, RGB vertical stripe, normaly TFT-LCD panel, RGB vertical stripe, normal

C510 2402-001042 C-AL,SMD 100uF,20%,16V,GP,TP,6.6x6.6x5.4mmC511 2402-001042 C-AL,SMD 100uF,20%,16V,GP,TP,6.6x6.6x5.4mmC512 2402-001042 C-AL,SMD 100uF,

C561 2203-001391 C-CERAMIC,CHIP 150nF,10%,25V,X7R,TP,2012,-C562 2203-001391 C-CERAMIC,CHIP 150nF,10%,25V,X7R,TP,2012,-C563 2203-001391 C-CERAMIC,CHIP

CN21 3711-002127 CONNECTOR-HEADER BOX,8P,1R,1.25mm,SMD-A,SN SNACN22 3711-002049 CONNECTOR-HEADER BOX,6P,1R,1.25mm,SMD-A,SN SNACN23 3711-002049 CONNECT

IC23 0903-001202 IC-MICROCONTROLLER80251G2,8Bit,PLCC,44P,653MIL,24MHz,TR,CMOS,PLASTIC,5V,1.5W,0to+70C,1KBYTE,-,24BiSNAIC24 0803-000117 IC-TTL 74F14,IN

R1006 2007-000074 R-CHIP 100ohm,5%,1/16W,DA,TP,1608R1007 2007-000070 R-CHIP 0ohm,5%,1/16W,DA,TP,1608R1008 2007-000074 R-CHIP 100ohm,5%,1/16W,DA,TP,160

R15 2007-000077 R-CHIP 470ohm,5%,1/16W,DA,TP,1608R150 2007-000102 R-CHIP 100Kohm,5%,1/16W,DA,TP,1608R151 2007-000102 R-CHIP 100Kohm,5%,1/16W,DA,TP,160

R2554 2007-000075 R-CHIP 220ohm,5%,1/16W,DA,TP,1608R2555 2007-000075 R-CHIP 220ohm,5%,1/16W,DA,TP,1608R2556 2007-000070 R-CHIP 0ohm,5%,1/16W,DA,TP,160

R349 2007-000074 R-CHIP 100ohm,5%,1/16W,DA,TP,1608R35 2007-000070 R-CHIP 0ohm,5%,1/16W,DA,TP,1608R350 2007-000074 R-CHIP 100ohm,5%,1/16W,DA,TP,1608R35

R436 2007-000074 R-CHIP 100ohm,5%,1/16W,DA,TP,1608R437 2007-000074 R-CHIP 100ohm,5%,1/16W,DA,TP,1608R438 2007-000074 R-CHIP 100ohm,5%,1/16W,DA,TP,1608

R513 2007-000070 R-CHIP 0ohm,5%,1/16W,DA,TP,1608R514 2007-000070 R-CHIP 0ohm,5%,1/16W,DA,TP,1608R516 2007-000074 R-CHIP 100ohm,5%,1/16W,DA,TP,1608R517

CONFIDENTIAL2 Product Specifications2-2 LTM1555(B)/LTM1755(B)2-2 Pin AssignmentsSyncTypePin No.Separate H/V Composite H/VSync-on-green1234567891011121

R62 2007-000072 R-CHIP 47ohm,5%,1/16W,DA,TP,1608R620 2007-000072 R-CHIP 47ohm,5%,1/16W,DA,TP,1608R621 2007-000070 R-CHIP 0ohm,5%,1/16W,DA,TP,1608R622

- BN90-00195E ASSY STAND GH17LS SNASTD+C/R 6001-000154 SCREW-MACHINE BH,+,M4,L8,NI PLT,SM20C,-CIS BN75-00242A UNIT-STAND EOS 15AS/NS,-,ABS,-,SV-012P,-

CIS 0203-001100 TAPE-OPP MASKING OPP/W75/CLR,T0.05,W75,L800000,CLR SNACIS BH69-00376D PACKING-PALLET ES17AS,WOODEN,-,-,1232,1032,120,-,-,- SNACIS BH69

8 Block DiagramLTM1555(B)/LTM1755(B) 8-1CONFIDENTIAL

CONFIDENTIALMemo8 Block Diagrams8-2 LTM1555(B)/LTM1755(B)

CONFIDENTIALLTM1555(B)/LTM1755(B) 9-1

Memo9 Schematic Diagrams9-2 LTM1555(B)/LTM1755(B)CONFIDENTIAL

CONFIDENTIALLTM1555(B)/LTM1755(B) 10-15I23I17GNDI314VCC2O_O12O_510O_48O_3O_264+5V_CPUO_11IO13I511I49IC110MC74F14D+5V_CPU IS ALWAYS ACTIVE+3.3V_JAG IS

CONFIDENTIAL10 Schematic Diagrams10-2 LTM1555(B)/LTM1755(B)1 2 3

CONFIDENTIALLTM1555(B)/LTM1755(B) 10-310 Schematic Diagrams10-2 Micom / Jack Part Schematic Diagram R2556IC25MC74VHC139DR201C3B2A1J1012MM74HC32MXIC27I

CONFIDENTIAL2 Product SpecificationsLTM1555(B)/LTM1755(B) 2-3QRSPOVideoSyncSyncHorizontalVerticalCDEPOBAVideoSyncSyncSeparate Sync2-3 Timing ChartThis

CONFIDENTIAL10 Schematic Diagrams10-4 LTM1555(B)/LTM1755(B)4

CONFIDENTIALLTM1555(B)/LTM1755(B) 10-510 Schematic Diagrams10-3 Scalar EOS_VE_NTSC Part Schematic Diagram

CONFIDENTIAL10 Schematic Diagrams10-6 LTM1555(B)/LTM1755(B)5 6 7 8

CONFIDENTIALLTM1555(B)/LTM1755(B) 10-710 Schematic Diagrams10-4 Video EOS_VE_NTSC Part Schematic Diagram I656I076VSP9415BIC401656O322I656I278CVBS152VS

CONFIDENTIAL10 Schematic Diagrams10-8 LTM1555(B)/LTM1755(B)9

CONFIDENTIALLTM1555(B)/LTM1755(B) 10-910 Schematic Diagrams10-5 Audio Part Schematic Diagram change into 330NF17" 5.6kchange into 330NF10uF3.3UHL

CONFIDENTIAL10 Schematic Diagrams10-10 LTM1555(B)/LTM1755(B)10

LTM1555(B)/LTM1755(B) 10-1110 Schematic DiagramsCONFIDENTIAL10-6 LVDS & RAM EOS_VE_NTSC Part Schematic Diagram DELETE10uFC61+3.3V_DTXOUT0-48TXOUT1

10 Schematic Diagrams10-12 LTM1555(B)/LTM1755(B)CONFIDENTIALMemo

SEC LT140X1-002 BN07-00004A SA BN68-00187ASEC LT150XS-L01 BN07-00009A SB BN68-00187BSEC LT150XS-L01-B BN07-00022A SC BN68-00187CSEC LTM150XS-L02 BN07-

Memo2 Product Specifications2-4 LTM1555(B)/LTM1755(B)CONFIDENTIAL

11 Panel Description11-2 LTM1555(B)/LTM1755(B)CONFIDENTIALMemo

Copyright© 2002 by Samsung Electronics Co., Ltd.All rights reserved.This manual may not, in whole or in part, becopied, photocopied, reproduced, trans

LTM1555(B)/LTM1755(B) 3-1CONFIDENTIAL3 Disassembly and ReassemblyThis section of the service manual describes the disassembly and reassembly procedure