Samsung P2370H Service Manual
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Samsung P2370H Service Manual

Tft-lcd monitor
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SERVICE
TFT-LCD Monitor
P2370H / P2470H
Refer to the service manual in the GSPN (see the rear cover) for the more information.
LCD-Monitor
Chassis
: LS23EFV
LS24EFH
Model
: P2370H
P2470H
Manual
1. Precautions
2. Product specifications
3. Disassembly and Reassemble
4. Troubleshooting
5. Exploded View & Part List
6. Wiring Diagram
Contens

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Summary of Contents for Samsung P2370H

  • Page 1: Service Manual

    Contens 1. Precautions 2. Product specifications 3. Disassembly and Reassemble 4. Troubleshooting 5. Exploded View & Part List 6. Wiring Diagram P2370H / P2470H Refer to the service manual in the GSPN (see the rear cover) for the more information.

  • Page 2: Table Of Contents

    4-6. Error Examples and Actions ..................4-13 4-7. Adjustment ........................4-14 5. Exploded View & Part List ..................5-1 5-1. Exploded View (P2370H) ....................5-1 5-2. Parts List (P2370H) ......................5-3 5-3. Exploded View (P2470H) ....................5-6 5-4. Parts List (P2470H) ......................5-8 6.
  • Page 3 Mideast & Africa http://mea.samsungportal.com © 2009 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.

  • Page 4: Disassembly

    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. Disassembly Caution: 1. Turn the monitor off before beginning the disassembly process. 2.
  • Page 5 3. Disassembly and Assembly Description Photo Screws 3. Separate the other side in the same way. 4. Lift the REAR-COVER up to separate it. 5. Remove the FFC cable, the LED driver wire, the function wire and the two hex-head screws, and separate the DVI shield.
  • Page 6 3. Disassembly and Assembly Description Photo Screws 7. Separate the inverter and the main PBA from the PBA bracket. ※The assembly is in the reverse order of disassembly.
  • Page 7 3. Disassembly and Assembly Memo...

  • Page 8: Exploded View & Part List

    5. Exploded View & Part List 5. Exploded View & Part List 5-1. LS23EFVKU/XF - Exploded View (P2370H)
  • Page 9 5. Exploded View & Part List 5-1-1. LS23EFVKU/XF - Parts List (P2370H) Location No. Code No. Description & Specification Q’ty SA/SNA Remark M0006 BN96-11906C ASSY SHIELD P-COVER;P2370H,SECC,T0.8 M0013 BN96-12215A ASSY COVER P-REAR;ECOFIT(P2370H),ABS HB, M0014 BN94-03171L ASSY PCB MAIN-STZ,W/W;LS23EFV*,W/W M0020 BN96-10522C ASSY BOARD P;Ecofit LED,CT5000-6590C,SEC...
  • Page 10 5. Exploded View & Part List 5-2. LS23EFVKU/XF - Parts List (P2370H) Service Bom (SA: SERVICE AVAILABLE, SNA: SERVICE NOT AVAILABLE) Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark BN90-02018J ASSY COVER FRONT;LS23EF (P2370H) ASSY COVER T0003 BN96-09624L P-FRONT;LS23EF(P2370H),PMMA,P...
  • Page 11 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark M0017 BN91-04468M ASSY CHASSIS-STZ,W/W;LS23EFVKUV/ZA SCREW-TAPTYPE;PWH,+,- M0081 6003-001023 ,B,M3,L10,ZPC(WHT), T0562 6046-001014 STAND OFF;#4-40,L6,NI PLT,C3601 LEAD CONNECTOR;ECOFIT M2893 BN39-00419E 25inch,UL1571#30,1 M0215 BN44-00308B INVERTER;Ecofit21.5,23"W,GH329B,60khz,14 ...3 M0014 BN94-03208U ASSY PCB MISC-MAIN;LS23EFP*,BN44-00308B, ..4...
  • Page 12 BN61-05592A HOLDER-SUB PCB;P2570,PC+ABS,5V,BK25 ...3 M0131 BN63-03474A GASKET;HUBBLE 27",Polyurethane+Polyester ...3 T0073 BN63-04800A GASKET-EMI;T-MFM,Fabric Type,1.5mm,20mm, ...3 BN63-05893C SHIELD-MAIN;P2370H,SECC,T0.8 M0230 BN96-08740R ASSY CABLE P-FFC;ECOFIT P2370H,FFC Cable M0014 BN94-03171L ASSY PCB MAIN-STZ,W/W;LS23EFV*,W/W ...3 0202-001463 SOLDER-WIRE;LFC2-W3.0,-,D3,99.79Sn/0.2Cu 15.985 ...3 0202-001608 SOLDER-WIRE FLUX;LFC7-107,D0.8,99.3Sn/0. 0.025 ...3 0204-002420 SOLVENT;1M-1000,C3H70H,96 8.17...
  • Page 13 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark TR-SMALL SIGNAL;KTC3875S- ..4 Q101 0501-000445 Y,NPN,150mW,SOT TR-SMALL ..4 PQ02 0501-002080 SIGNAL;2SC2412K,NPN,200mW,SC-59 ..4 Q409 0505-001165 FET-SILICON;Si3443CDV,P,-20V,+-4.4A,65mo ..4 Q409 0505-001170 FET-SILICON;FDS9933A,P,-20V,3.8A,0.075oh IC-VIDEO SWITCH;PI3HDMI1210ABEX,HDMI/ ..4 IC106 1001-001496 IC-D/A CONVERTER;WM8521H9GED/ ..4...
  • Page 14 A,SN,Y HEADER-BOARD TO ..4 3711-005471 CABLE;BOX,12P,1R,1.25mm, HEADER-BOARD TO ..4 3711-005743 CABLE;BOX,5P,1R,1.25mm,A ..4 T0010 BN27-00009A COIL CHOKE;SMD 12x12x6,EOS,33uH,15%,0.12 ..4 T0077 BN41-01308A PCB MAIN;Ecofit P2370H,FR-4,2,MP1.0,1.6 ASSY MICOM-STZ,W/W;LS23EFV*,BN41- ..4 BN97-03853R 01237B ..5 IC115 1107-001580 IC-FLASH MEMORY;MX25L4005,4Mbit,512Kx8,S ..4 C802 2203-006348 C-CER,CHIP;1000nF,10%,25V,X5R,TP,1608 ..4 Q409 0505-001957 FET-SILICON;NTR2101P,P,-8V,-3.7A,0.052oh...
  • Page 15 BAG PE;HDPE/HDPE/NITRON,T0.015/T0.015/T0 BN92-05720R ASSY BOX;LS23EFVKU/XF T0077 BH68-00329D LABEL BAR CODE-02;NO CE,NO WT`Y,MPRII,LA LABEL BOX-00;ALL MODEL,MOJO BH68-00650A 90G,90,95,WH LABEL-STICKER BN68-02258N HIC;MODEL10,CHINA,MOJO,80G BN69-04192B BOX-04,SET;P2370H,CB,A-01,SW2, ECT40,YEL ASSY MISC P-01,HANDLE PACKING;ALL M0245 BN96-02895A MODEL, ...3 BN66-00007A LEVER-TOP;ALL MODEL,LDPE,WHITE,5.8g LEVER-BOTTOM;ALL ...3 BN66-00008A MODEL,LDPE,WHITE,4.01g M0045 BN92-05739U ASSY ACCESSORY;LS23EFVKU/XF...
  • Page 16 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark ..4 BN81-04117A A/S-FET-N MOS;0505-000010 ..4 BN81-04120A A/S-SCR;1401-000001 ..4 BN81-04121A A/S-VARISTOR;1405-000005 ..4 BN81-04122A A/S-RESISTOR-MOR;2001-100003 ..4 BN81-04123A A/S-RESISTOR-MOR;2001-100007 ..4 BN81-04124A A/S-RESISTOR-MOR;2001-100016 ..4 BN81-04132A A/S-CAP-C DS;2201-000001 ..4 BN81-04133A A/S-CAP-C DS;2201-000008...
  • Page 17 CBF-POWER CORD;DT,CN,IP3/Y(A),IEC320 C13 ...3 T0524 6902-000110 BAG PE;LDPE,T0.05,W250,L400,TRP,28,2,9.2 LABEL-PASSING;SAMSUNG ALL,ART ...3 T0527 AA68-00764A PAPER,CLR, ...3 M9889 BN63-02368B CLOTH-CLEAN;cloth,120,160,sea blue,ToC ...3 T0527 BN68-00513A LABEL-E,PASS;ALL MODEL,YUPO(110G),50X15, MANUAL FLYER-WARRANTY CARD;Chinese,Art ...3 BN68-01789A MANUAL FLYER-QSG SC;P2370H,SC,Mojo ...3 BN68-01905M 70g,1 MANUAL FLYER-TOC ...3 BN68-02186A GUIDE;COMM,SAMSUNG,10 L 5-10...

  • Page 18: 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 19: 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 20: 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 21 1. Precautions Memo...

  • Page 22: Product Specifications

    2. Product specifications 2. Product specifications 2-1. Feature & Specifications Model P2370H / P2470H Feature Panel Specification : 300cd/m2 , 5ms (G to G 2ms), CR 1000:1 (DCR 70000:1), 170/160 ሪ DPMS : <1.3W (Typical), <1.5W (Max) ሪ Off-Timer function for reducing standby power usages ሪ...

  • Page 23: Spec Comparison To The Old Models

    2. Product specifications 2-2. Spec Comparison to the Old Models Model P2370H / P2470H XL2370 / P2570 Design 23” 250cd/m2 Brightness 300cd/m2 25” 300cd/m2 Contrast 1000:1 1000:1 23” MEGA DCR 70,000:1 25” 70,000:1 Response Time 5ms ( W to B) & 2ms (G to G) 5ms ( W to B) &...

  • Page 24: Accessories

    BN68-01650A Warranty Card BH68-00633B (Not available in all locations) User’s Guide, Monitor Driver, BN96-09890A Natural Color software, MagicTune™ software Stand Body BN96-09628B Samsung Electronics Stand Base BN96-11315A Service center CBF SIGNAL-DVI(I) to D-sub BN39-00310D 1,500mm(1.5M) Power Cord 3903-000085 1,830mm(1.8M) Adator...

  • Page 25: Accessories (Sold Separately)

    2. Product specifications 2-4. Accessories (Sold separately) Product Description Ccde. No Remark DVI Cable BN39-00246L 1,500mm(1.5M) Samsung Electronics Service center HDMI Cable MD39-00116A...

  • Page 26: Troubleshooting

    4. Troubleshooting 4. Troubleshooting 4-1. Troubleshooting Set custom mode as follows before beginning a repair. - Resolution : 1920 X 1080 - H-Frequency : 67.500kHz - V-Frequency : 60.000Hz If the screen is blank, check whether the power cord is connected correctly. The circuits to check: •...

  • Page 27: 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 Adaptor, the LED at the front of the monitor Symptom does not operate. - Check the Adaptor power fuse and the Adaptor output power. - Check the connections for Adaptor and the Main board inside the monitor.
  • Page 28 4. Troubleshooting 4-2-1. Circuit diagrams when the power does not turn on...

  • Page 29: When The Screen Is Blank (Analog)

    4. Troubleshooting 4-3. When the screen is blank (Analog) - Even though the LED power turns on, the screen is blank when connecting the DVI-I to D-sub Symptom cable. - Check the DVI-I to D-sub cable connections. Major checkpoints - Check whether the LVDS(FFC) cable is connected correctly to the panel. - Check whether the lamp connector of the panel is connected correctly to the Inverter.
  • Page 30 4. Troubleshooting 4-3-1. When a blank screen is displayed (Analog)
  • Page 31 4. Troubleshooting 4-3-2. Waveforms when no screen is displayed (Analog) ① ③ ④...

  • Page 32: When A Blank Screen Is Displayed (Digital)

    4. Troubleshooting 4-4. When a blank screen is displayed (Digital) Symptom - Even though the LED power turns on, the screen is blank when connecting the DVI cable. - Check the DVI cable connections. Major checkpoints - Check whether the LVDS(FFC) cable is connected correctly to the panel. - Check whether the lamp connector of the panel is connected correctly to the Inverter.
  • Page 33 4. Troubleshooting 4-4-1. Circuit diagrams when a blank screen is displayed (Digital)
  • Page 34 4. Troubleshooting 4-4-2. Waveforms when a blank screen is displayed (Digital)

  • Page 35: When A Blank Screen Is Displayed (Hdmi)

    4. Troubleshooting 4-5. When a blank screen is displayed (HDMI) Symptom - Even though the LED power turns on, the screen is blank when connecting the HDMI cable. - Check the HDMI cable connections. Major checkpoints - Check whether the LVDS(FFC) cable is connected correctly to the panel. - Check whether the lamp connector of the panel is connected correctly to the Inverter.
  • Page 36 4. Troubleshooting 4-5-1. Circuit diagrams when a blank screen is displayed (HDMI) 4-11...
  • Page 37 4. Troubleshooting 4-5-2. Waveforms when a blank screen is displayed (HDMI) 4-12...

  • Page 38: Error Examples And Actions

    4. Troubleshooting 4-6. 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 39: 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 40: Service Function Specifications

    4. Troubleshooting 4-7-2. 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 41 4. Troubleshooting When replacing the panel „ After replacing the panel, select the Panel Ch. No. item and press the MENU key for five seconds. The Panel Ch. No. will then increment by one and the panel’s time information will be set to 0. At the same time, the panel cycle will be set to 0.
  • Page 42 DDC MANAGER Connect to MAIN board CN102 - Connect DDC Manager Jig to P2370H / P2470H with DVI-I to D-Sub cable and DVI cable. - Execute Winddc.exe Program on PC. - Click the Winddc icon. 1. Click the Open [F5] icon 2.
  • Page 43 4. Troubleshooting 5. Enter the serial number and then press the Enter button. If you using old version. -> When inputting digital data after inputting analog data, repeat steps 2 to 5. 4-18...
  • Page 44 4. Troubleshooting Inputting the MCU Data „ 1) Check the following options. - Manufacture : MSTAR - Device Type :TSUMxx - Communication Por t: DSUB15(Analog) - External Memory : PMC25LV040 2) Click the LoadFile button, select an MCU code file, and then click the Open [O] button. 4-19...
  • Page 45 4. Troubleshooting 3) Click the Auto Program button. 4) When programming and verification are complete, hard power the monitor off and then on again. 4-20...
  • Page 46 4. Troubleshooting Inputting the Code (HDCP) „ 1. Run the service.exe file. 2. Click the HDCP button. 4-21...
  • Page 47 4. Troubleshooting 3. Click the HDCP Write button and select MStar_HDCPKEY. 4. Inputting the HDCP key is completed. 4-22...

  • Page 48: Wiring Diagram

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

  • Page 49: Wiring Diagram - Ip Board

    6. Wiring Diagram 6-2. Wiring Diagram - IP Board LVDS Connector (Connect to Panel) CN400 LVDS X201 IC200 EEPROM IC101 Scaler TMDS Switch CN604 OP700 CN700 CN102 CN703 DVI - I HDMI Audio Optical Adaptor Jack Jack...

  • Page 50: Connector Functions

    6. Wiring Diagram 6-3. Connector Functions Connector Functions CN102 DVI-I (Analog/ Digital) signal input terminal * Upon occurrence of a fault: No RGB Output error may occur. CN200 Connected to the function board. * Upon occurrence of a fault: No LED screen and Function Failure error may occur. CN400 Transfers LVDS signals from the main board to the panel.
  • Page 51 6. Wiring Diagram Memo...

This manual is also suitable for:

P2470h

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