Samsung LTW19HS, LTW19GS, T190, T190G Service Manual

LCD-Monitor

Chassis : LTW19HS / LTW19GS

Model :

T190 / T190(G)

SERVICE

Manual

TFT-LCD Monitor Contens

T190 / T190(G)

Refer to the service manual in the GSPN (see the rear cover) for the more information.

1. Precautions

2. Product specications

3. Disassembly and Reassembl

e

4. Troubleshootin

g

5. Exploded View & Part Lis

t

6. Wiring Diagra

m

7. Schematic Diagra

m

Contents

1. Precautions .............................................................................................................. 1-1

1-1. Safety Precautions ......................................................................................................... 1-1

1-2. Servicing Precautions ..................................................................................................... 1-2

1-3. Static Electricity Precautions .......................................................................................... 1-2

1-4. Installation Precautions .................................................................................................. 1-3

2. Product specications ............................................................................................ 2-1

2-1. Feature & Specications ................................................................................................. 2-1

2-2. Spec Comparison to the Old Models .............................................................................. 2-2

2-3. Accessories .................................................................................................................... 2-3

2-4. Accessories (Sold separately) ........................................................................................ 2-3

3. Disassembly and Assembly ................................................................................... 3-1

3-1. Disassembly ................................................................................................................... 3-1

4. Troubleshooting ...................................................................................................... 4-1

4-1. Troubleshooting .............................................................................................................. 4-1

4-2. When the Power Does Not Turn On ............................................................................... 4-2

4-3. When the screen is blank (Analog) .................................................................................4-4

4-4. When a blank screen is displayed (Digital) .....................................................................4-7

4-5. Error Examples and Actions ......................................................................................... 4-10

4-6. Adjustment .................................................................................................................... 4-11

5. Exploded View & Part List ...................................................................................... 5-1

5-1. Exploded View -T190 / T190(G) ..................................................................................... 5-1

5-2. Parts List -T190 / T190(G) .............................................................................................. 5-3

6. Wiring Diagram ........................................................................................................ 6-1

6-1. Wiring Diagram - Main Board ......................................................................................... 6-1

6-2. Wiring Diagram - IP Board ..............................................................................................6-2

6-3. Connector Functions ...................................................................................................... 6-3

6-4. Cables ............................................................................................................................ 6-3

7. Schematic Diagram ................................................................................................. 7-1

7-1. Circuit Descriptions .........................................................................................................7-1

7-2. Schematic Diagrams (Scaler Part) ................................................................................. 7-2

7-3. Schematic Diagrams (Power Flowchart) ........................................................................ 7-2

7-4. Schematic Diagrams (IP Board) ..................................................................................... 7-3

7-5. Schematic Diagrams (Main PBA) .................................................................................. 7-5

GSPN (Global Service Partner Network)

Area Web Site

North America

http://service.samsungportal.com

Latin America

http://latin.samsungportal.com

CIS http://cis.samsungportal.com

Europe http://europe.samsungportal.com

China http://china.samsungportal.com

Asia http://asia.samsungportal.com

Mideast & Africa

http://mea.samsungportal.com

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.

Printed in Korea P/N: BN82-00355A-00

3-1

3. Disassembly and Assembly

This section describes the disassembly and reassembly sequences for this monitor.

Warning: As this monitor has parts that are sensitive to static electricity, be careful when handling them.

3-1. Disassembly

Caution: 1. Turn the monitor off before beginning the disassembly process.

2. When disassembling the monitor, do not use any metal tools except for the provided jig.

3. Disassemble the monitor carefully as directed in the following procedures.

Description Photo Screws

1. Place a soft cloth on the table and place the monitor onto it with the front part facing downwards. Hold the monitor set with one hand and hold and pull the stand body backwards with the other hand to remove the stand body from the monitor set.

2. Insert both hands into the groove and then lift up and remove the cover.

3. Remove the four (2) screws.

3-2

3. Disassembly and Assembly

Description Photo Screws

4. Remove the cover and the LCD panel using the provided jig on both grooves at the bottom.

5. Remove the INVERTER wire, LVDS cable, and FUNCTION cable, and then remove the SHIELDCOVER.

INVERTER,

LVDS

FUNCTION

3-3

3. Disassembly and Assembly

Description Photo Screws

6. After disconnecting SHIELD-LAMP of left side, disassemble lamp wire between panel and IP Board.

7. Removethefour(4)screwsshowninthegure

and remove the Bracket support.

8. Remove the two (2) screws and then remove the holders from the four (4) snaps designated in the

rightgureusingtheprovidedjig.

3-4

3. Disassembly and Assembly

Description Photo Screws

9. Remove the connectors.

Caution : Servicing is not supported for the PCB.

▶Assembly

10. The assembly is in the reverse order of the disassembly.

11. Connect the disassembled snap and the LED module again.

12.Fixtheconnectingwirewithlamenttape

Caution : If the wire is damaged when closing the

cover, an operating error may occur. Therefore, make sure to close the

coverafterxingitwithlamenttape.

필라멘트테이프

3-5

3. Disassembly and Assembly

Description Photo Screws

13. The assembly is in the reverse order of the disassembly. Insert the cover into the groove and then press both sides.

※The assembly is in the reverse order of disassembly.

3-6

3. Disassembly and Assembly

Memo

5-1

5. Exploded View & Part List

5-1. LS19TWHSXV/XF Exploded View -T190 / T190(G)

T0003

M0215

M0112

M0013

BN96-07927A

STD

M0027

BN63-04506A

5-2

5. Exploded View & Part List

5-1-1. LS19TWHSXV/XF Parts List

- T190

Location No. Code No. Description & Specication Q’ty SA/SNA Remark

T0003 BN96-07379B ASSY COVER P-FRONT;LS19TW,PMMA+ABS,HB,AU 1 S.A

M0215 BN07-00493A LCD-PANEL;LTM190M2-L31-2 1 S.A

BN63-04506A SHIELD-LAMP;T19W,SPTE,T0.3 1 S.N.A

M0112 BN91-02262A ASSY SHIELD;LS19TW,TOC 1 S.N.A

M0013 BN96-07380A ASSY COVER P-REAR;LS19TW,PMMA ABS,HB,BK2 1 S.A

T0312 BN96-07927A ASSY COVER P-REAR SUB;LS19TW,PMMA ABS,HB 1 S.A

STD BN96-07347C ASSY STAND P-BODY;LS22TW,PMMA ABS HB,SM5 1 S.A

M0027 BN96-07385B ASSY STAND P-BASE;LS19TW,ABS HB,BK26,H/G 1 S.N.A

5-3

5. Exploded View & Part List

5-2. LS19TWHSXV/XF Parts List

Service Bom (SA: SERVICE AVAILABLE, SNA: SERVICE NOT AVAILABLE)

Level Location No. Code No. Description & Specication Q’ty SA/SNA Remark

LS19TWHSXV/XF T190,WGG1/S19T0-LTW,19,LCD-MO,CHINA

0.1 M0001 BN90-01621H

ASSY COVER FRONT;LS19TW,OTHER_

POP,T190,A

1 S.N.A

..2 T0003 BN96-07379B

ASSY COVER P-FRONT;LS19TW,PMMA+ABS,

HB,AU

1 S.A

...3 M0081 6003-000282

SCREW-TAPTITE;BH,+,-

,B,M3,L8,ZPC(BLK),SW

2 S.A

...3 M0960 BN61-03937A HOLDER-BOSS;T190,PMMA+ABS HB,WH15 1 S.N.A

...3 CCM1 BN63-02183D COVER-SHEET;Rhcm,PE Vinyl,T0.05,680mm,20 0.5 S.N.A

...3 M0112 BN63-04429B

COVER-FRONT;T190,PMMA+ABS,AURORA

BLACK,T

1 S.N.A

...3 BN64-00842A

KNOB-GUIDE;T220,PMMA+ABS,HB,BK23,H/

GLOSS

1 S.N.A

...3 T0022 BN64-00844A

KNOB CONTROL;T220,PMMA+ABS,HB,BK23,H/

GLO

1 S.N.A

...3 M0102 BN96-07569A ASSY BLU P;T220D,MB-M0716,WHITE,BLU 1 S.A

....4 BN94-01893J ASSY PCB MAIN-BN96-07569A;T,ASSY BLU P 1 S.N.A

.....5 BN81-01709A

A/S-MOLD FRAME;SR-

3108F,46.6X10.524X,BN9

1 S.N.A

.....5 BN81-01710A A/S-GUIDE PANEL-L;PC,40.6X7.08X3.4,BN96- 1 S.N.A

.....5 BN81-01711A

A/S-DIFFUSER SHEET;G25,42.6X10.31,BN96-

0

1 S.N.A

.....5 BN81-01715A A/S-HARNESS;PST0716-01,BN96-07569A 1 S.N.A

.....5 BN81-01716A A/S-SHADING TAPE;#1350,98.9X14.82,-,-,-, 1 S.N.A

.....5 T0174 BN97-02297N ASSY SMD;T,W/W 1 S.N.A

......6 BN81-01712A A/S-PCB;FR-4,0.6T,8.68X7.05,BN96-07569A 1 S.N.A

......6 BN81-01713A A/S-LED;MWHT213Z,BN96-07569A 1 S.N.A

......6 BN81-01714A

A/S-RESISTOR;RC1206JR-0733R,BN96-

07569A

1 S.N.A

...3 M0145 BN96-07890B ASSY BOARD P-FUNCTION;T,Function Assy,Wi 1 S.A

....4 M2893 BN39-01007C LEAD CONNECTOR;T,UL1061#28,5 to 5pin,150 1 S.A

....4 BN94-01893A ASSY PCB MAIN-POWER PCB;T 1 S.N.A

.....5 CN330 3711-002162

HEADER-BOARD TO

CABLE;BOX,2P,1R,1.25mm,S

1 S.A

.....5 CN906 3711-006471

CONNECTOR-HEADER;BOX,5P,1R,1mm,SMD-

A,AU,

1 S.A

.....5 BN74-00014A

TAPE-FUNCTION TAPE;DOUBLE FACE

TAPE,Acry

1 S.N.A

.....5 T0174 BN97-02297E ASSY SMD;T,W/W 1 S.N.A

......6 U3 1203-005267 IC-VOL. DETECTOR;KIA7027,TSM,3P,PLASTIC, 1 S.A

......6 U1 1209-001809

IC-SENSOR;MCS-5000,UQFN,24P,4x4mm,PL

ASTI

1 S.A

......6 R110 2007-000074 R-CHIP;100ohm,5%,1/10W,TP,1608 1 S.A

......6 R110 2007-000082 R-CHIP;3.3Kohm,5%,1/10W,TP,1608 1 S.A

......6 R110 2007-000084 R-CHIP;4.7Kohm,5%,1/10W,TP,1608 1 S.A

......6 C120 2203-005918 C-CER,CHIP;1000nF,10%,6.3V,X7R,1608 1 S.A

......6 C120 2203-006048 C-CER,CHIP;100nF,10%,10V,X7R,1005 1 S.A

5-4

5. Exploded View & Part List

......6 CN330 3711-005935

HEADER-BOARD TO

CABLE;BOX,4P,1R,1mm,SMD-

1 S.A

......6 PCB BN41-01034A PCB-FUNCTION;T Function PCB,FR-4,2,MP 1. 1 S.N.A

....4 BN94-01893B ASSY PCB MAIN-FUNCTION PCB;T 1 S.N.A

.....5 M2893 BN39-01051A

LEAD CONNECTOR;T220D,UL1571#30,UL,4P

,#30

1 S.A

.....5 M0104 BN63-04673A EARTH-PLATE;T220,PBS SH,T0.15 2 S.N.A

.....5 T0174 BN97-02297F ASSY SMD;T,W/W 1 S.N.A

......6 D1 0403-001411

DIODE-ZENER;-,5.49-5.73V,200mW,SOD-

323,T

1 S.A

......6 D10 0403-001411

DIODE-ZENER;-,5.49-5.73V,200mW,SOD-

323,T

1 S.A

......6 D2 0403-001411

DIODE-ZENER;-,5.49-5.73V,200mW,SOD-

323,T

1 S.A

......6 R110 2007-000081 R-CHIP;2.7Kohm,5%,1/10W,TP,1608 1 S.A

......6 R110 2007-000123 R-CHIP;1.5Kohm,5%,1/10W,TP,1608 1 S.A

......6 T0313 3404-001209 SWITCH-TACT;12VDC,50mA,250gf,4.5x4.5x1.5 1 S.A

......6 PCB BN41-01033A PCB-FUNCTION;T Function PCB,FR-4,2,MP 1. 1 S.N.A

0.1 M0002 BN90-01622A ASSY COVER REAR;LS19TW_TOC 1 S.N.A

..2 M0013 BN96-07380A

ASSY COVER P-REAR;LS19TW,PMMA

ABS,HB,BK2

1 S.A

...3 CCM1 BN63-02183D COVER-SHEET;Rhcm,PE Vinyl,T0.05,680mm,20 0.5 S.N.A

...3 M0006 BN63-04432A

COVER-REAR;T190,PMMA+ABS,HB,BK23,H/

GLOSS

1 S.N.A

...3 M0126 BN73-00170B

RUBBER-FOOT;943BW,2043BW,RUBBER,8*8

,2.5,

3 S.N.A

...3 M0126 BN73-00096A

RUBBER-PANEL;BI19BS,RUBBER,T1.0,50~6

0,NT

7 S.N.A

..2 T0312 BN96-07927A

ASSY COVER P-REAR SUB;LS19TW,PMMA

ABS,HB

1 S.A

...3 CCM1 BN63-02183B COVER-SHEET;Rhcm,PE Vinyl,T0.05,150mm,20 0.4 S.N.A

...3 M0006 BN63-04430B

COVER-REAR SUB;LS19TW,PMMA+ABS,-,-,-

,HB,

1 S.N.A

..2 M0081 6003-000275 SCREW-TAPTITE;BH,+,-,B,M3,L10,ZPC(BLK),S 2 S.N.A

0.1 M0106 BN91-01803S ASSY LCD-STZ;LS19AQW* 1 S.N.A

..2 M0215 BN07-00493A LCD-PANEL;LTM190M2-L31-2 1 S.A

0.1 M0017 BN91-02098T ASSY CHASSIS-STZ,W/W;LS19TWH* 1 S.N.A

..2 M0081 6003-001439

SCREW-TAPTITE;BH,+,-

,S,M4,L8,ZPC(WHT),SW

1 S.N.A

..2 T0514 BN61-03557A

BRACKET-SUPPORT;2043BW/

NW[Mckinley],SPTE

1 S.N.A

..2 M0014 BN94-01703Y ASSY PCB MAIN-STZ,W/W;LS19TWHSUV* 1 S.A

...3 T0245 0202-001608 SOLDER-WIRE FLUX;LFC7-107,D0.8,99.3Sn/0. 0.003 S.N.A

...3 CN102 3701-001173 CONNECTOR-DVI;24P,3R,FEMALE,ANGLE,AUF 1 S.A

...3 CN101 3701-001219

CONNECTOR-DSUB;15P,3R,FEMALE,ANGLE,

AUF

1 S.A

5-5

5. Exploded View & Part List

...3 CN600 3711-004261

HEADER-BOARD TO

BOARD;BOX,12P,1R,2mm,ANG

1 S.A

...3 HDCP BN97-00707A

ASSY HDCP;BN46-00018A,BR20/21BS_

CS,MSTAR

1 S.N.A

....4 BN46-00018A

KEY CODE-CERTIFICATE;(HDCP

KEY)PPM42M5S,

1 S.N.A

...3 T0174 BN97-02132G ASSY SMD;LS19TWH* 1 S.N.A

....4 SUB05 0202-001477

SOLDER-CREAM;LST309-M,-

,D20~45um,96.5Sn/

0.528 S.N.A

....4 D100 0401-001056

DIODE-SWITCHING;MMBD4148SE,100V,200m

A,SO

1 S.A

....4 D101 0401-001056

DIODE-SWITCHING;MMBD4148SE,100V,200m

A,SO

1 S.A

....4 D102 0401-001056

DIODE-SWITCHING;MMBD4148SE,100V,200m

A,SO

1 S.A

....4 D103 0401-001056

DIODE-SWITCHING;MMBD4148SE,100V,200m

A,SO

1 S.A

....4 D104 0401-001056

DIODE-SWITCHING;MMBD4148SE,100V,200m

A,SO

1 S.A

....4 D105 0401-001056

DIODE-SWITCHING;MMBD4148SE,100V,200m

A,SO

1 S.A

....4 D106 0401-001056

DIODE-SWITCHING;MMBD4148SE,100V,200m

A,SO

1 S.A

....4 D107 0401-001056

DIODE-SWITCHING;MMBD4148SE,100V,200m

A,SO

1 S.A

....4 D108 0401-001056

DIODE-SWITCHING;MMBD4148SE,100V,200m

A,SO

1 S.A

....4 D109 0401-001056

DIODE-SWITCHING;MMBD4148SE,100V,200m

A,SO

1 S.A

....4 D110 0401-001056

DIODE-SWITCHING;MMBD4148SE,100V,200m

A,SO

1 S.A

....4 D600 0402-001614 DIODE-RECTIFIER;S1G,400V,1A,DO-214AC,TP 1 S.A

....4 D601 0402-001614 DIODE-RECTIFIER;S1G,400V,1A,DO-214AC,TP 1 S.A

....4 ZD100 0403-001411

DIODE-ZENER;-,5.49-5.73V,200mW,SOD-

323,T

1 S.A

....4 ZD101 0403-001411

DIODE-ZENER;-,5.49-5.73V,200mW,SOD-

323,T

1 S.A

....4 ZD102 0403-001411

DIODE-ZENER;-,5.49-5.73V,200mW,SOD-

323,T

1 S.A

....4 ZD103 0403-001411

DIODE-ZENER;-,5.49-5.73V,200mW,SOD-

323,T

1 S.A

....4 ZD104 0403-001411

DIODE-ZENER;-,5.49-5.73V,200mW,SOD-

323,T

1 S.A

....4 ZD105 0403-001411

DIODE-ZENER;-,5.49-5.73V,200mW,SOD-

323,T

1 S.A

....4 ZD106 0403-001411

DIODE-ZENER;-,5.49-5.73V,200mW,SOD-

323,T

1 S.A

....4 ZD202 0403-001411

DIODE-ZENER;-,5.49-5.73V,200mW,SOD-

323,T

1 S.A

....4 ZD203 0403-001411

DIODE-ZENER;-,5.49-5.73V,200mW,SOD-

323,T

1 S.A

....4 ZD204 0403-001411

DIODE-ZENER;-,5.49-5.73V,200mW,SOD-

323,T

1 S.A

....4 ZD601 0403-001411

DIODE-ZENER;-,5.49-5.73V,200mW,SOD-

323,T

1 S.A

....4 ZD200 0406-001061 DIODE-TVS;MMQA5V6T3,5.32/5.6/5.88V,24W,S 1 S.A

....4 ZD201 0406-001061 DIODE-TVS;MMQA5V6T3,5.32/5.6/5.88V,24W,S 1 S.A

....4 Q201 0501-000445

TR-SMALL SIGNAL;KTC3875S-

Y,NPN,150mW,SOT

1 S.A

....4 Q203 0501-000445

TR-SMALL SIGNAL;KTC3875S-

Y,NPN,150mW,SOT

1 S.A

5-6

5. Exploded View & Part List

....4 Q204 0501-000445

TR-SMALL SIGNAL;KTC3875S-

Y,NPN,150mW,SOT

1 S.A

....4 Q601 0501-000445

TR-SMALL SIGNAL;KTC3875S-

Y,NPN,150mW,SOT

1 S.A

....4 Q202 0501-002080

TR-SMALL SIGNAL;2SC2412K,NPN,200mW,S

C-59

1 S.A

....4 Q205 0501-002080

TR-SMALL SIGNAL;2SC2412K,NPN,200mW,S

C-59

1 S.A

....4 Q207 0501-002080

TR-SMALL SIGNAL;2SC2412K,NPN,200mW,S

C-59

1 S.A

....4 Q602 0501-002080

TR-SMALL SIGNAL;2SC2412K,NPN,200mW,S

C-59

1 S.A

....4 Q409 0505-001165 FET-SILICON;SI3443BDV,P,-20V,+-4.4A,65mo 1 S.A

....4 IC112 1103-000129 IC-EEPROM;24C02,2Kbit,256x8Bit,SOP,8P,5x 1 S.A

....4 IC112 1103-001410

IC-EEPROM;S-24CS08AFJ-TB-

1GE,8Kbit,1Kx8,

1 S.A

....4 T0087 1203-003695

IC-POSI.FIXED REG.;NCP1117ST33T3G,SOT-

22

1 S.A

....4 T0087 1203-003695

IC-POSI.FIXED REG.;NCP1117ST33T3G,SOT-

22

1 S.A

....4 T0087 1203-003696

IC-POSI.FIXED REG.;NCP1117DT18T5G,DPA

K,3

1 S.A

....4 R110 2007-000071 R-CHIP;22ohm,5%,1/10W,TP,1608 1 S.A

....4 R110 2007-000074 R-CHIP;100ohm,5%,1/10W,TP,1608 1 S.A

5-7

5. Exploded View & Part List

....4 R110 2007-000074 R-CHIP;100ohm,5%,1/10W,TP,1608 1 S.A

....4 R110 2007-000080 R-CHIP;2Kohm,5%,1/10W,TP,1608 1 S.A

....4 R110 2007-000082 R-CHIP;3.3Kohm,5%,1/10W,TP,1608 1 S.A

....4 R110 2007-000083 R-CHIP;3Kohm,5%,1/10W,TP,1608 1 S.A

....4 R110 2007-000084 R-CHIP;4.7Kohm,5%,1/10W,TP,1608 1 S.A

....4 R110 2007-000088 R-CHIP;7.5Kohm,5%,1/10W,TP,1608 1 S.A

....4 R110 2007-000090 R-CHIP;10Kohm,5%,1/10W,TP,1608 1 S.A

....4 R110 2007-000102 R-CHIP;100Kohm,5%,1/10W,TP,1608 1 S.A

....4 R110 2007-000124 R-CHIP;2.2Kohm,5%,1/10W,TP,1608 1 S.A

....4 R110 2007-000309 R-CHIP;10ohm,5%,1/10W,TP,1608 1 S.A

....4 R110 2007-000821 R-CHIP;390ohm,1%,1/10W,TP,1608 1 S.A

....4 R110 2007-001002 R-CHIP;510ohm,5%,1/10W,TP,1608 1 S.A

....4 R110 2007-001044 R-CHIP;56ohm,5%,1/10W,TP,1608 1 S.A

....4 R110 2007-001164 R-CHIP;75ohm,1%,1/10W,TP,1608 1 S.A

....4 C120 2203-000236 C-CER,CHIP;0.1nF,5%,50V,C0G,1608 1 S.A

5-8

5. Exploded View & Part List

....4 C120 2203-000236 C-CER,CHIP;0.1nF,5%,50V,C0G,1608 1 S.A

....4 C120 2203-000257 C-CER,CHIP;10nF,10%,50V,X7R,TP,1608 1 S.A

....4 C120 2203-000384 C-CER,CHIP;0.015nF,5%,50V,C0G,1608 1 S.A

....4 C120 2203-000626 C-CER,CHIP;0.022nF,5%,50V,C0G,1608 1 S.A

....4 C120 2203-000888 C-CER,CHIP;4.7nF,10%,50V,X7R,1608 1 S.A

....4 C120 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 1 S.A

Samsung LTW19HS, LTW19GS, T190, T190G Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual