Samsung LS19MYN Service Manual

LCD-Monitor

Chassis : LS19MYN

Model :

SERVICE

943NW / 943NWX

Manual

TFT-LCD Monitor Contens

1. Precautions

2. Product specications

3. Disassembly and Reassembl

4. Troubleshootin

5. Exploded View & Part Lis

6. Wiring Diagra

7. Schematic Diagra

g

m

e

t

943NW / 943NWX

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

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. SIMPLE STAND Disassembly ........................................................................................3-1

3-2. HAS STAND Disassembly .............................................................................................. 3-4

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. Error Examples and Actions ........................................................................................... 4-7

4-5. Adjustment ...................................................................................................................... 4-8

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

5-1. SIMPLE STAND Exploded View .....................................................................................5-1

5-2. SIMPLE STAND Parts List .............................................................................................. 5-3

5-3.

HAS STAND Exploded View ................................................................................................. 5-9

5-4.

HAS STAND

Parts List .................................................................................................. 5-11

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) .................................................................................. 7-3

GSPN (Global Service Partner Network)

Area Web Site

North America

Latin America

CIS http://cis.samsungportal.com

Europe http://europe.samsungportal.com

China http://china.samsungportal.com

Asia http://asia.samsungportal.com

Mideast & Africa

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.

http://service.samsungportal.com

http://latin.samsungportal.com

http://mea.samsungportal.com

Printed in Korea P/N: BN82-00288A-00

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. SIMPLE STAND Disassembly

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

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

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

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.

Caution : : If you do not tilt the stand and use too

much force to remove it, the connection pin may break.

2. ① Turn the monitor over and insert your hands into the top of the monitor at the center and separate the front cover in the direction of the

arrow as shown in the gure.

② Separate the sides of the front cover up to the

directed line as shown in the gure.

3. Turn the monitor over again to remove the back cover.

①

②

3-1

3-2

3. Disassembly and Assembly

Description Photo Screws

4.

Remove the SHIELD-LAMP using the provided JIG.

Caution: The SHIELD-LAMP is sharp.

5. Remove the LVDS, LAMP wire, FUNCTION cable, and SPEAKER cable, and then remove the SHIELD-COVER.

6.

Remove the LCD panel..

7.

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

LVDS

LAMP WIRE

FUNCTION

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

and remove the Bracket support.

Description Photo Screws

9.

Remove the main PCB and IP boards from the SHIELD-cover.

The assembly is in the reverse order of disassembly.※

3. Disassembly and Assembly

3-3

3. Disassembly and Assembly

3-2. HAS STAND Disassembly

Description Photo Screws

1. If the Stopper PIN at the back of the stand is not removed, place a soft cloth on the table and place the monitor on it, and then hold the monitor set and remove the Stopper PIN at the back of the stand.

2.

Turn the monitor over. Remove the two (2) screws that hold the stand in place and then remove the stand.

Caution: When removing the screws, hold

the stand body with one hand so that the stand does not fall.

3. The following steps are the same as steps 2 to 9 for disassembling the SIMPLE stand.

The assembly is in the reverse order of disassembly.※

3-4

5. Exploded View & Part List

T0003

M0215

M0174

M0081

T0514

M0006

M0013

M0003

M0027

BN63-03965A

5-1. SIMPLE STAND Exploded View (LS19MYNKFZ/XBM)

5. Exploded View & Part List

5-1

5. Exploded View & Part List

5-1-1. LS19MYNKFZ/XBM Parts List (943NWX)

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

T0003 BN96-07592B ASSY COVER P-FRONT;[Mckinley]LS19MYW,ABS 1 S.A

M0215 BN07-00462A LCD-PANEL;M190A1-L07 1 S.A

M0174 BN44-00121K IP BOARD;PWI1904SJ(J),MCKINLEY 943NW/BW, 1 S.A

M0081 6003-000115 SCREW-TAPTITE;BH,+,B,M3,L6,ZPC(BLK),SWRC 2 S.A

M0081 6003-001439 SCREW-TAPTITE;BH,+,-,S,M4,L8,ZPC(WHT),SW 1 S.N.A

T0514 BN61-03557A BRACKET-SUPPORT;2043BW/NW[Mckinley],SPTE 1 S.N.A

M0006 BN96-06381R ASSY SHIELD P-COVER;943NW(CMO PANEL),SEC 1 S.N.A

BN63-03965A SHIELD-LAMP;943BW/NW,SPTE,T0.3,(Wide) 1 S.N.A

M0013 BN96-06380N ASSY COVER P-REAR;LS19MYN,HIPS HB,BK26,S 1 S.A

M0003 BN96-06388A ASSY STAND P;-,943BW,-,SECC T2.0,-,- 1 S.A

M0027 BN96-06672A ASSY STAND P-BASE;LS17MY,ABS HB,BK26,H/G 1 S.A

5-2

5. Exploded View & Part List

5-2.

LS19MYNKFZ/XBM Parts List

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

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

LS19MYNKFZ/XBM

0.1 M0002 BN90-01584A

..2 M0013 BN96-06380N

...3 M0113 BN61-01581A BRACKET-VESA;BI17/19BS,SECC,T1.0 2 S.N.A

...3 M0006 BN63-03940A COVER-REAR SUB;2043BW/NW,HIPS HB,BK26 1 S.N.A

...3 M0006 BN63-03982G

...3 M0126 BN73-00162A

...3 M0126 BN73-00164A RUBBER-PANEL;LS19MYW,RUBBER,BLACK 3 S.N.A

0.1 M0001 BN90-01631A

..2 T0003 BN96-07592B

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

...3 M0112 BN63-04551B

...3 M0130 BN67-00209A LENS LED;Mckinley,PC CLEAR,TP15(TP-1020) 1 S.N.A

...3 M0175 BN96-06485B

....4 M0014 BN94-01772C

.....5 M2893 BN39-01007A LEAD CONNECTOR;Mckinley,UL1571#30,5 to 5 1 S.A

.....5 BN61-03552A GUIDE-CONTROL;2043BW/NW,ABS HB,GR70 1 S.N.A

.....5 BN74-00011A

.....5 BN74-00012A

.....5 T0174 BN97-02132L ASSY SMD;LS17MY* 1 S.N.A

......6 CD1 0406-001172 DIODE-TVS;CDS3C30GTH,48/-/50V,SMD 1 S.A

......6 CD2 0406-001172 DIODE-TVS;CDS3C30GTH,48/-/50V,SMD 1 S.A

......6 L0405 0601-002461 LED;SMD,InGaN Blue,1.6X3.2X1.1mm,468nm,1 1 S.A

......6 U1 1209-001706

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

......6 R110 2007-000105 R-CHIP;200Kohm,5%,1/10W,TP,1608 1 S.A

......6 R110 2007-000107 R-CHIP;470Kohm,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 C120 2203-000257 C-CER,CHIP;10nF,10%,50V,X7R,TP,1608 1 S.A

......6 C120 2203-005065 C-CER,CHIP;1000nF,+80-20%,10V,Y5V,1608 1 S.A

......6 CN906 3711-006471

943NWX,SAL1/S19B8-LMY,19,LCD-

MO,ECUADOR

ASSY COVER REAR;LS19MYNKBZ/XSF,CMO

PANEL

ASSY COVER P-REAR;LS19MYN,HIPS

HB,BK26,S

COVER-REAR;943BW/NW,HIPS

HB,BK26,CMO,SIM

RUBBER-PANEL;943BW/

NW,RUBBER,BLACK,(Wide

ASSY COVER FRONT;LS19MYNKFZ/XBG,CMO

PANE

ASSY COVER P-FRONT;[Mckinley]LS19MYW,

ABS

COVER-FRONT;[Mckinley]LS19MYW,ABS

HB,T2.

ASSY BOARD P-TOUCH FUNCTION;Mckinley,CT5

ASSY PCB MAIN-FUNCTION

PCB,BN9;LS17MY*

TAPE-FUNCTION TAPE;DOUBLE FACE

TAPE,Poly

TAPE-FUNCTION TAPE;DOUBLE FACE

TAPE,Poly

IC-SENSOR;TS08N,MLF,32P,5x5mm,PLASTIC

,5V

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

A,AU,

1 S.N.A

1 S.A

1 S.N.A

6 S.N.A

1 S.N.A

1 S.A

1 S.N.A

1 S.A

1 S.N.A

1 S.A

5-3

5. Exploded View & Part List

......6 PCB BN41-00947A PCB SUB-FUNCITION;Mckinley function,FR-4 1 S.N.A

0.1 M0112 BN91-01877A ASSY SHIELD;MCKINLEY 19,LS19MYW 1 S.N.A

..2 BN63-03965A SHIELD-LAMP;943BW/NW,SPTE,T0.3,(Wide) 1 S.N.A

0.1 M0107 BN91-02069A ASSY LCD-CTZ;LS19MYN* 1 S.N.A

..2 M0215 BN07-00462A LCD-PANEL;M190A1-L07 1 S.A

0.1 M0017 BN91-02070A ASSY CHASSIS-CTZ;LS19MYNKB/XSF 1 S.N.A

..2 M0081 6003-000115

..2 M0081 6003-001439

..2 M0174 BN44-00121K

..2 T0514 BN61-03557A

..2 M0014 BN94-01702A ASSY PCB MAIN-CTZ;LS19MYNKB/XSF 1 S.A

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

...3 CN101 3701-001219

...3 CN600 3711-004261

...3 T0174 BN97-02079A ASSY SMD;LS19MYNKB/XSF 1 S.N.A

....4 SUB05 0202-001477

....4 D108 0401-001056

....4 D109 0401-001056

....4 D110 0401-001056

....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 ZD104 0403-001411

....4 ZD105 0403-001411

....4 ZD202 0403-001411

....4 ZD203 0403-001411

....4 ZD204 0403-001411

....4 ZD601 0403-001411

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

....4 Q203 0501-000445

....4 Q204 0501-000445

....4 Q601 0501-000445

....4 Q202 0501-002080

SCREW-TAPTITE;BH,+,B,M3,L6,ZPC(BLK),SW

RC

SCREW-TAPTITE;BH,+,B,M3,L6,ZPC(BLK),SW

RC

SCREW-TAPTITE;BH,+,-

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

IP BOARD;PWI1904SJ(J),MCKINLEY 943NW/

BW,

BRACKET-SUPPORT;2043BW/

NW[Mckinley],SPTE

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

AUF

HEADER-BOARD TO

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

SOLDER-CREAM;LST309-M,-

,D20~45um,96.5Sn/

DIODE-SWITCHING;MMBD4148SE,100V,200m

A,SO

DIODE-SWITCHING;MMBD4148SE,100V,200m

A,SO

DIODE-SWITCHING;MMBD4148SE,100V,200m

A,SO