Samsung 943NW Service Manual
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Samsung 943NW Service Manual

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SERVICE
TFT-LCD Monitor
943NW / 943NWX
Refer to the service manual in the GSPN (see the rear cover) for the more information.
Downloaded from ManualMonitor.com Manuals
LCD-Monitor
Chassis
: LS19MYN
Model
: 943NW / 943NWX
Manual
1. Precautions
2. Product specifications
3. Disassembly and Reassemble
4. Troubleshooting
5. Exploded View & Part List
6. Wiring Diagram
7. Schematic Diagram
Contens

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Summary of Contents for Samsung 943NW

  • Page 1: Service Manual

    LCD-Monitor Chassis : LS19MYN Model : 943NW / 943NWX SERVICE Manual TFT-LCD Monitor Contens 1. Precautions 2. Product specifications 3. Disassembly and Reassemble 4. Troubleshooting 5. Exploded View & Part List 6. Wiring Diagram 7. Schematic Diagram 943NW / 943NWX Refer to the service manual in the GSPN (see the rear cover) for the more information. Downloaded from ManualMonitor.com Manuals...

  • Page 2: Table Of Contents

    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 specifications .................... 2-1 2-1. Feature & Specifications ....................2-1 2-2. Spec Comparison to the Old Models ................2-2 2-3.
  • Page 3 Web Site North America http://service.samsungportal.com Latin America http://latin.samsungportal.com 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 © 2007 Samsung Electronics Co.,Ltd. This Service Manual is a property of Samsung Electronics Co.,Ltd. All rights reserved. Any unauthorized use of Manual can be punished under applicable Printed in Korea International and/or domestic law. P/N: BN82-00288A-00 Downloaded from ManualMonitor.com Manuals...

  • Page 4: Disassembly And Assembly

    3. Disassembly and Assembly 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.
  • Page 5 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 LVDS the SHIELD-COVER. LAMP WIRE FUNCTION 6.
  • Page 6 3. Disassembly and Assembly Description Photo Screws 9. Remove the main PCB and IP boards from the SHIELD-cover. The assembly is in the reverse order of disassembly. ※ Downloaded from ManualMonitor.com Manuals...
  • Page 7 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.
  • Page 8 5. Exploded View & Part List 5. Exploded View & Part List 5-1. SIMPLE STAND Exploded View (LS19MYNKFZ/XBM) Downloaded from ManualMonitor.com Manuals...
  • Page 9 IP BOARD;PWI1904SJ(J),MCKINLEY 943NW/BW, M0081 6003-000115 SCREW-TAPTITE;BH,+,B,M3,L6,ZPC(BLK),SWRC M0081 6003-001439 SCREW-TAPTITE;BH,+,-,S,M4,L8,ZPC(WHT),SW S.N.A T0514 BN61-03557A BRACKET-SUPPORT;2043BW/NW[Mckinley],SPTE S.N.A M0006 BN96-06381R ASSY SHIELD P-COVER;943NW(CMO PANEL),SEC S.N.A BN63-03965A SHIELD-LAMP;943BW/NW,SPTE,T0.3,(Wide) S.N.A M0013 BN96-06380N ASSY COVER P-REAR;LS19MYN,HIPS HB,BK26,S M0003 BN96-06388A ASSY STAND P;-,943BW,-,SECC T2.0,-,- M0027 BN96-06672A ASSY STAND P-BASE;LS17MY,ABS HB,BK26,H/G...

  • Page 10: Parts List

    5. Exploded View & Part List LS19MYNKFZ/XBM 5-2. Parts List Service Bom (SA: SERVICE AVAILABLE, SNA: SERVICE NOT AVAILABLE) Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark 943NWX,SAL1/S19B8-LMY,19,LCD- LS19MYNKFZ/XBM MO,ECUADOR ASSY COVER REAR;LS19MYNKBZ/XSF,CMO M0002 BN90-01584A S.N.A PANEL ASSY COVER P-REAR;LS19MYN,HIPS M0013 BN96-06380N...
  • Page 11 BN07-00462A LCD-PANEL;M190A1-L07 M0017 BN91-02070A ASSY CHASSIS-CTZ;LS19MYNKB/XSF S.N.A SCREW-TAPTITE;BH,+,B,M3,L6,ZPC(BLK),SW M0081 6003-000115 SCREW-TAPTITE;BH,+,B,M3,L6,ZPC(BLK),SW M0081 6003-000115 SCREW-TAPTITE;BH,+,- M0081 6003-001439 S.N.A ,S,M4,L8,ZPC(WHT),SW IP BOARD;PWI1904SJ(J),MCKINLEY 943NW/ M0174 BN44-00121K BRACKET-SUPPORT;2043BW/ T0514 BN61-03557A S.N.A NW[Mckinley],SPTE M0014 BN94-01702A ASSY PCB MAIN-CTZ;LS19MYNKB/XSF ...3 T0245 0202-001608 SOLDER-WIRE FLUX;LFC7-107,D0.8,99.3Sn/0. 0.003 S.N.A CONNECTOR-DSUB;15P,3R,FEMALE,ANGLE,...
  • Page 12 5. Exploded View & Part List TR-SMALL SIGNAL;2SC2412K,NPN,200mW,S ..4 Q205 0501-002080 C-59 TR-SMALL SIGNAL;2SC2412K,NPN,200mW,S ..4 Q207 0501-002080 C-59 ..4 Q409 0505-001165 FET-SILICON;SI3443BDV,P,-20V,+-4.4A,65mo IC-EEPROM;S-24CS08AFJ-TB- ..4 IC112 1103-001410 1GE,8Kbit,1Kx8, IC-POSI.FIXED REG.;NCP1117ST33T3G,SOT- ..4 T0087 1203-003695 IC-POSI.FIXED REG.;NCP1117DT18T5G,DPA ..4 T0087 1203-003696 IC-LCD CONTROLLER;SE717M- ..4 IC109 1205-003364 LF,PQFP,128P,20...
  • Page 13 5. Exploded View & Part List ..4 R110 2007-000090 R-CHIP;10Kohm,5%,1/10W,TP,1608 ..4 R110 2007-000090 R-CHIP;10Kohm,5%,1/10W,TP,1608 ..4 R110 2007-000090 R-CHIP;10Kohm,5%,1/10W,TP,1608 ..4 R110 2007-000090 R-CHIP;10Kohm,5%,1/10W,TP,1608 ..4 R110 2007-000102 R-CHIP;100Kohm,5%,1/10W,TP,1608 ..4 R110 2007-000124 R-CHIP;2.2Kohm,5%,1/10W,TP,1608 ..4 R110 2007-000309 R-CHIP;10ohm,5%,1/10W,TP,1608 ..4 R110 2007-000309 R-CHIP;10ohm,5%,1/10W,TP,1608 ..4 R110 2007-000821 R-CHIP;390ohm,1%,1/10W,TP,1608 ..4...
  • Page 14 PCB MAIN;Mckinley,CEM-3 Silver,2,MP1.0,1 S.N.A ASSY MICOM;Mckinley,LMY19NS,MX25L1005 ..4 M0018 BN97-02035A S.N.A ..5 IC115 1107-001614 IC-FLASH MEMORY;MX25L1005,1Mbit,1Mx1Bit, S.N.A M0251 BN96-02854N ASSY CABLE P;Fininfarina,FLAT CABLE,-,15 ASSY SHIELD P-COVER;943NW(CMO M0006 BN96-06381R S.N.A PANEL),SEC ...3 T0073 AA63-01141C GASKET-EMI;42D5,T1.5,10,40,Fabric S.N.A CLAMPER CORE-WIRE;ALL MODEL,NYLON ...3 T0527 AA65-00011C S.N.A 66,V2, STUD-PEM;PNB,M2.8,D7,L20,ZPC(SIL),SUM2...
  • Page 15 MANUAL FLYER-01,WARRANTY ...3 T0175 AA68-03727A S.N.A CARD;All,SAMSUN ...3 BN63-02368A CLOTH;LS07BTT,SUEDE,0.6,160,120 S.N.A ASSY MANUAL P- ...3 M0215 BN96-06906A S.N.A IB+QSG;943NW,943NWX,MOJO 8 S/W DRIVER-02,IB;943NW,943NWs,W/ ..4 CCM1 BN59-00666A S.N.A W,SyncMa MANUAL FLYER-QSG;2043BW,SyncMaster,W/ ..4 BN68-01377A S.N.A M0114 BN39-00244G CBF SIGNAL;D-sub cable,15P/15P,20276N,15 Downloaded from ManualMonitor.com Manuals...

  • Page 16: Precautions

    1. Precautions 1. Precautions 1-1. Safety Precautions Follow these safety, servicing and ESD precautions to prevent damage and to protect against potential hazards such as electrical shock. 1-1-1. Warnings For continued safety, do not attempt to modify the circuit board. Disconnect the AC power and DC power jack before servicing.

  • Page 17: Servicing Precautions

    1. Precautions 1-2. Servicing Precautions WARNING: An electrolytic capacitor installed with the wrong polarity might explode. Caution: Before servicing units covered by this service manual, read and follow the Safety Precautions section of this manual. Note: If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions, always follow the safety precautions.

  • Page 18: Installation Precautions

    1. Precautions 1-4. Installation Precautions For safety reasons, more than two people are required for carrying the product. Keep the power cord away from any heat emitting devices, as a melted covering may cause fire or electric shock. Do not place the product in areas with poor ventilation such as a bookshelf or closet. The increased internal temperature may cause fire.
  • Page 19 1. Precautions Memo Downloaded from ManualMonitor.com Manuals...

  • Page 20: Product Specifications

    2. Product specifications 2. Product specifications 2-1. Feature & Specifications Model 943NW / 943NWX Feature Panel Specifications: 300 cd/m2, 5 ms, CR 1000:1, 170/160 (CR>10) � DPMS : <1W � TCO’03 � Off-Timer function for reducing standby power usages �...

  • Page 21: Spec Comparison To The Old Models

    2. Product specifications 2-2. Spec Comparison to the Old Models Model Mckinley(943NW / 943NWX) Mendel(931BW) Design Size 19” 19” Resolution 1440 x 900 1440 x 900 Input Analog / DVI Digital with HDCP Analog / Digital with HDCP Response Time...

  • Page 22: Accessories

    2-3. Accessories Product Description Ccde. No Remark Quick Setup Guide BH68-00376L Warranty Card BH68-00633B (Not available in all locations) Samsung Electronics User’s Guide, Service center Monitor Driver, BN59-00585A Natural Color Pro Software D-Sub(15 Pin) Cable BN39-00244G Power Cord 3903-000082 2-4. Accessories (Sold separately)
  • Page 23 2. Product specifications Memo Downloaded from ManualMonitor.com Manuals...
  • Page 24 7. Schematic Diagram 7. Schematic Diagram 7-1. Circuit Descriptions Location Function Remark Scaler Besides the ADC, LVDS, and scaling part, an MCU is embedded as well. All of SE556M-LF IC200 them are integrated into one chip. Flash Stores the MCU program embedded in the scaler. It is of a flash type and Memory MX25LV512 rewritable.
  • Page 25 7. Schematic Diagram 7-2. Schematic Diagrams (Scaler Part) SE717M-LF (PC)ANALOG 8Bit 8Bit Display LVDS Processing Panel HSYNC Engine Interface VSYNC Interface Engine Clock Generator 14.318MHz 24C08 XTAL Flash EEPROM 1.8V 3.3V Regulator Regulator Function Key Inverter 7-3. Schematic Diagrams (Power Flowchart) Panel 3.3V IC 201...
  • Page 26 7. Schematic Diagram 7-4. Schematic Diagrams (IP Board) SMPS Part  Downloaded from ManualMonitor.com Manuals...
  • Page 27 7. Schematic Diagram Inverter Part  Downloaded from ManualMonitor.com Manuals...
  • Page 28 SMAW200A-12P Downloaded from ManualMonitor.com Manuals...

  • Page 29: Troubleshooting

    4. Troubleshooting 4. Troubleshooting 4-1. Troubleshooting Set custom mode as follows before beginning a repair. • Resolution: 1440 x 900 • V-frequency: 60 Hz If the screen is blank, check whether the power cord is connected correctly. The circuits to check: •...

  • Page 30: When The Power Does Not Turn On

    4. Troubleshooting 4-2. When the Power Does Not Turn On - When turning on the Power button after connecting the power cable, the LED at the front of the Symptom monitor does not operate. - When turning on the Power button after connecting the power cable, the LED at the front of the monitor does not operate.
  • Page 31 4. Troubleshooting 4-2-1. Circuit diagrams when the power does not turn on Downloaded from ManualMonitor.com Manuals...

  • Page 32: When The Screen Is Blank (Analog)

    4. Troubleshooting 4-3. When the screen is blank (Analog) Symptom - LEven though the LED power turns on, the screen is blank when connecting the VGA cable. - Even though the LED power turns on, the screen is blank when connecting the VGA cable. - Check the D-sub cable connections.
  • Page 33 4. Troubleshooting 4-3-1. When a blank screen is displayed (Analog) ② ① Downloaded from ManualMonitor.com Manuals...
  • Page 34 4. Troubleshooting 4-3-2. Waveforms when no screen is displayed (Analog) ① ③ ④ Downloaded from ManualMonitor.com Manuals...

  • Page 35: Error Examples And Actions

    4. Troubleshooting 4-4. Error Examples and Actions Error Appearance Symptoms and Actions Remarks Symptom: DVI signals are not recognized. *On how to input DDC, refer to the training manual. Cause: This error occurs because the PC cannot recognize the mode information since the DVI DDC is not input to the monitor.

  • Page 36: Adjustment

    1) Use when updating the AD board code. 2) Download the WinDDC program, DDC Input program, and Hex and DDC files appropriate to the model through the Quality Control department of Samsung Electronics. Install the jig and input the data, as shown in the figure. Monitor needing...
  • Page 37 4. Troubleshooting 4-5-2. Service Function Specifications Checking the Code Version  1. Check the MCU code version and checksum after entering SVC Mode. 2. Entering SVC Mode - Adjust the Brightness and Contrast values to 0. - Hold down the Enter button for five (5) seconds. - The SVC Function OSD is displayed.
  • Page 38 4. Troubleshooting 2. Press the - button to change the setting to On or Off.  When replacing the panel After replacing the panel, move to the Panel item and hold down the Menu button for five (5) seconds. The Ch. No is incremented by 1 and then both the On Time and Cycle are set to 0. This number is incremented by 1.
  • Page 39 4. Troubleshooting Inputting the DDC Data  Use the DDC Manager MTI-2050 version or later. 1) Click the Open [F5] icon. 2) Select a port. 3) Open a DDC file. 4) Select a date and click the OK [Save] button. 5) Click the Next [OK] button.
  • Page 40 4. Troubleshooting Inputting the MCU Data  1) Check the following options. - Manufacture: MSTAR - Device Type:TSUM16_ROM128K_ext_flash - Communication Port: DSUB15 (Analog) - External Memory: PMC25LV010E 2) Click the LoadFile button, select an MCU code file, and then click the Open [O] button. 4-12 Downloaded from ManualMonitor.com Manuals...
  • Page 41 4. Troubleshooting 3) Click the Auto Program button. 4) When programming and verification are complete, hard power the monitor off and then on again. 4-13 Downloaded from ManualMonitor.com Manuals...
  • Page 42 4. Troubleshooting Memo 4-14 Downloaded from ManualMonitor.com Manuals...

  • Page 43: Wiring Diagram

    6. Wiring Diagram 6. Wiring Diagram 6-1. Wiring Diagram - Main Board LVDS for Panel Lamp wire for Panel VGA Input Downloaded from ManualMonitor.com Manuals...

  • Page 44: Wiring Diagram - Ip Board

    6. Wiring Diagram 6-2. Wiring Diagram - IP Board LVDS Connector (Connect to Panel) 3708-001150 EEPROM Flash memory Scaler SE717M-LF 3701-001219 Function Connector (Connect to IP-Board) RGB Connector (PConnect to PC) Downloaded from ManualMonitor.com Manuals...

  • Page 45: Connector Functions

    6. Wiring Diagram 6-3. Connector Functions Connector Functions CN600 Supplies 5V from the power board to the main board and transmits the PWM output from the power board to the inverter. *When a problem occurs: The No Power and Blank Screen errors may occur. CN1 ~ CN4 In Transmits the lamp current (6mA ~ 7mA) generated in the inverter to the lamp of the panel.
  • Page 46 6. Wiring Diagram Memo Downloaded from ManualMonitor.com Manuals...

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