Samsung 2493HM Service Manual
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Samsung 2493HM Service Manual

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SERVICE
TFT-LCD Monitor
2493HM
Refer to the service manual in the GSPN (see the rear cover) for the more information.
LCD-Monitor
Chassis
: LS24KIE
Model
: 2493HM
Manual
1. Precautions
2. Product specifications
3. Disassembly and Reassemble
4. Troubleshooting
5. Exploded View & Part List
6. Wiring Diagram
7. Schematic Diagram
Contents

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Summary of Contents for Samsung 2493HM

  • Page 1 LCD-Monitor Chassis : LS24KIE Model : 2493HM SERVICE Manual TFT-LCD Monitor Contents 1. Precautions 2. Product specifications 3. Disassembly and Reassemble 4. Troubleshooting 5. Exploded View & Part List 6. Wiring Diagram 7. Schematic Diagram 2493HM Refer to the service manual in the GSPN (see the rear cover) for the more information.

  • 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 GSPN (Global Service Partner Network) Area 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: BN82-00292A-00...
  • Page 4 3. Disassembly and Reassemble 3. Disassembly and Reassemble 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 Cautions: 1. Turn the monitor off before beginning the disassembly process. 2.
  • Page 5 3. Disassembly and Reassemble Part Description Picture Description Screws 3. Seperate the Inverter Cable from the SMPS. Inverter Cable 4. Remove the LVDS cable. 5. Remove the cable from the SHIELD-COVER. ASSY CHASSIS 6. Remove the cable. 7. Remove the hexagonal screws from the bottom of the Shield.
  • Page 6 3. Disassembly and Reassemble Part Description Picture Description Screws 8. Seperate the Function Cable and the Speaker Cable from the Main Board. Function Wire 9. Remove the four (4) screws from both sides of the speakers. Speaker 10. Remove the Panel and Chassis, separate the Speaker and Function wire from the Decoration and then separate the Decoration.
  • Page 7 3. Disassembly and Reassemble Part Description Picture Description Screws 12. Assemble the product in the reverse order of the disassembly. When closing the cover, close the lower side of the cover first. (Otherwise, the product may be damaged.) Back Cover Reassembly procedures are in the reverse order of disassembly procedures.

  • Page 8: Exploded View & Part List

    5. Exploded View & Part List 5. Exploded View & Part List 5-1. LS24KIERBQ/EDC Exploded View...
  • Page 9 ASSY SPEAKER P;8ohm,kilimanzaro,2W,4p,1w M0215 BN07-00399A LCD-PANEL;LTM240CT01 T0764 BN44-00195A SMPS-LCD MONITOR;245B2,DYREL,AC-DC,85.67 M0146 BN63-04051A SHIELD-PCB SMPS;2493HM,SPTE,T0.3 S.N.A M0014 BN94-01549A ASSY PCB MAIN;LS24KIEEFV/XAA,2493HM M0006 BN96-06454A ASSY SHIELD P-COVER;Kilimanzaro 24,SECC, S.N.A M0215 BN44-00136B INVERTER;245B,GH253A,60khz,24V,3.0mA,7.0 M0013 BN96-06452D ASSY COVER P-REAR;LS24KI,HIPS,HB,BK26 M0003 BN96-06600C ASSY STAND P;2493HM,ABS HB,BK26_SPRAY,US...
  • Page 10 S.N.A ...3 T0069 AA63-60131A SPACER-FELT;SVP403J,FELT,-,-,-,BLK,T0.5, S.N.A ...3 M0006 BN63-04040A COVER-REAR;2493HM,HIPS,HB,BK26 S.N.A M0216 BN90-01427E ASSY STAND;LS24KI,USB STAND,BLK SPRAY S.N.A M0003 BN96-06600C ASSY STAND P;2493HM,ABS HB,BK26_SPRAY,US ...3 T0081 6001-001547 SCREW-MACHINE;BH,+,M4,L10(5),ZPC(BLK),SW ...3 M0081 6003-000275 SCREW-TAPTITE;BH,+,-,B,M3,L10,ZPC(BLK),S S.N.A ...3 M0081 6003-000282 SCREW-TAPTITE;BH,+,-,B,M3,L8,ZPC(BLK),SW ...3 M0081 6003-000337 SCREW-TAPTITE;BH,+,S,M4,L10,ZPC(BLK),SWR...
  • Page 11 RUBBER CUSHION;MATISSE,-,##4.5(IN SIDE), S.N.A ...3 M0007 BN96-01524D ASSY STAND P-STOPPER;2693HM,SUS S.N.A ...3 M0126 BN96-05211A ASSY STAND P-SPRING;-,HUBBLE 24”,-,SUS,W S.N.A ...3 T0054 BN96-06458B ASSY HINGE P;2493HM,SECC T2.0 S.N.A ...3 M0852 BN96-06638A ASSY USB P;LS26KIEEFV/XAA,65X35 ..4 0406-001217 DIODE-TVS;NUP4301MR6,6/-/-V,500W,TSOP-6 ..4 Q409 0505-000110 FET-SILICON;2N7002,N,60V,115mA,7.5ohm,0..4 Q409 0505-001957 FET-SILICON;NTR2101P,P,-8V,-3.7A,0.052oh...
  • Page 12 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Q’ty ..4 D101 0401-001056 DIODE-SWITCHING;MMBD4148SE,100V,200mA,SO ..4 D102 0401-001056 DIODE-SWITCHING;MMBD4148SE,100V,200mA,SO ..4 D121 0401-001056 DIODE-SWITCHING;MMBD4148SE,100V,200mA,SO ..4 D122 0401-001056 DIODE-SWITCHING;MMBD4148SE,100V,200mA,SO ..4 D123 0401-001056 DIODE-SWITCHING;MMBD4148SE,100V,200mA,SO ..4 D124 0401-001056 DIODE-SWITCHING;MMBD4148SE,100V,200mA,SO ..4 D125...
  • Page 13 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Q’ty ..4 IC112 1103-001310 IC-EEPROM;24LC02B,256X8BIT,SOIC,8P,3.91X S.N.A ..4 IC112 1103-001410 IC-EEPROM;S-24CS08AFJ-TB-1GE,8Kbit,1Kx8, ..4 T0085 1201-001980 IC-AUDIO AMP;TDA7266D,SO,20P,16X11.1MM,- ..4 IC205 1203-001559 IC-RESET;DS1834A,SOIC,8P,150MIL,PLASTIC, ..4 IC304 1203-001824 IC-VOL. DETECTOR;7042,SOT-89,3P,-,PLASTI ..4 T0087 1203-002351...
  • Page 14 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Q’ty ..4 R110 2007-000071 R-CHIP;22ohm,5%,1/10W,TP,1608 ..4 R110 2007-000071 R-CHIP;22ohm,5%,1/10W,TP,1608 ..4 R110 2007-000071 R-CHIP;22ohm,5%,1/10W,TP,1608 ..4 R110 2007-000071 R-CHIP;22ohm,5%,1/10W,TP,1608 ..4 R110 2007-000071 R-CHIP;22ohm,5%,1/10W,TP,1608 ..4 R110 2007-000071 R-CHIP;22ohm,5%,1/10W,TP,1608 ..4 R110...
  • Page 15 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Q’ty ..4 R110 2007-000078 R-CHIP;1Kohm,5%,1/10W,TP,1608 ..4 R110 2007-000078 R-CHIP;1Kohm,5%,1/10W,TP,1608 ..4 R110 2007-000078 R-CHIP;1Kohm,5%,1/10W,TP,1608 ..4 R110 2007-000078 R-CHIP;1Kohm,5%,1/10W,TP,1608 ..4 R110 2007-000078 R-CHIP;1Kohm,5%,1/10W,TP,1608 ..4 R110 2007-000078 R-CHIP;1Kohm,5%,1/10W,TP,1608 ..4 R110...
  • Page 16 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Q’ty ..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 2007-000090 R-CHIP;10Kohm,5%,1/10W,TP,1608 ..4 R110 2007-000090 R-CHIP;10Kohm,5%,1/10W,TP,1608 ..4 R110...
  • Page 17 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Q’ty ..4 R110 2007-000729 R-CHIP;300ohm,5%,1/10W,TP,1608 ..4 R110 2007-000729 R-CHIP;300ohm,5%,1/10W,TP,1608 ..4 R110 2007-000729 R-CHIP;300ohm,5%,1/10W,TP,1608 ..4 R110 2007-000729 R-CHIP;300ohm,5%,1/10W,TP,1608 ..4 R110 2007-000729 R-CHIP;300ohm,5%,1/10W,TP,1608 ..4 R110 2007-000729 R-CHIP;300ohm,5%,1/10W,TP,1608 ..4 R110...
  • Page 18 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Q’ty ..4 C120 2203-000257 C-CER,CHIP;10nF,10%,50V,X7R,TP,1608 ..4 C120 2203-000257 C-CER,CHIP;10nF,10%,50V,X7R,TP,1608 ..4 C120 2203-000257 C-CER,CHIP;10nF,10%,50V,X7R,TP,1608 ..4 C120 2203-000257 C-CER,CHIP;10nF,10%,50V,X7R,TP,1608 ..4 C120 2203-000440 C-CER,CHIP;1nF,10%,50V,X7R,1608 ..4 C120 2203-000440 C-CER,CHIP;1nF,10%,50V,X7R,1608 ..4 C120...
  • Page 19 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Q’ty ..4 C120 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 ..4 C120 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 ..4 C120 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 ..4 C120 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 ..4 C120 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 ..4 C120 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 ..4 C120...
  • Page 20 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Q’ty ..4 C120 2203-005437 C-CER,CHIP;10000nF,+80-20%,10V,Y5V,3216 ..4 C120 2203-005437 C-CER,CHIP;10000nF,+80-20%,10V,Y5V,3216 ..4 C120 2203-005437 C-CER,CHIP;10000nF,+80-20%,10V,Y5V,3216 ..4 C120 2203-005437 C-CER,CHIP;10000nF,+80-20%,10V,Y5V,3216 ..4 C120 2203-006170 C-CER,CHIP;220nF,10%,16V,X7R,1608 ..4 C120 2203-006170 C-CER,CHIP;220nF,10%,16V,X7R,1608 ..4 C120...
  • Page 21 M0006 BN96-06454A ASSY SHIELD P-COVER;Kilimanzaro 24,SECC, S.N.A ...3 BN61-02429D STUD-PEM;PNB,M2.8,D7,L20,ZPC(SIL),SUM24L S.N.A ...3 BN61-02429F STUD-PEM;PNB,M2.8,D7,L28,ZPC(SIL),SUM24L S.N.A ...3 BN61-02431B STUD-PEM;PND,-,M4,D8,L8,ZPC(SIL),SUM24L S.N.A ...3 BN61-03726A GUIDE-PANEL;2493HM,SECC,T0.8 S.N.A ...3 M0107 BN63-04041A SHIELD-COVER;KILIMANZARO 24”,SECC,T0.8 S.N.A ...3 T0102 BN73-00138A RUBBER-CAP;HUBBLE,ELASTOMER,60,V2 S.N.A ...3 M0131 BN63-03886A GASKET;LS24HUC,Polyester+Cu+Ni+Hotmelt,1 S.N.A 5-14...
  • Page 22 3903-000042 CBF-POWER CORD;DT,EU,FP3/YES,IEC320 C13/ ...3 T0524 6902-000110 BAG PE;LDPE,T0.05,W250,L400,TRP,28,2 S.N.A ...3 T0076 BH68-00633B MANUAL FLYER-02,WARRANTY CARD;comm,Samsu S.N.A ...3 BN68-00907A MANUAL FLYER-01,CARD;COMM,SAMSUNG,18 LAN S.N.A ...3 BN68-01118B MANUAL-02,TCO03 CARD;COMM,W/W,Mojo 100g, S.N.A ...3 M0215 BN96-06501A ASSY MANUAL P-IB+QSG;comm,SyncMaster,W/W S.N.A ..4 CCM1 BN59-00660A S/W DRIVER-02,IB;comm,W/W,SyncMaster S.N.A...
  • Page 23 5. Exploded View & Part List Memo 5-16...

  • Page 24: 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 25: 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 26: 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 27 1. Precautions Memo...

  • Page 28: Product Specifications

    2. Product specifications 2. Product specifications 2-1. Feature & Specifications Model 2493HM Feature Support PC / DVI / HDMI � 5ms, DC 10000:1 Applied � 2W*2 Speaker � TCO’03 � USB (1 up, 2 down) optional � HDCP Applied for HDMI/DVI-D �...

  • Page 29: Spec Comparison To The Old Models

    2. Product specifications 2-2. Spec Comparison to the Old Models Model 2493HM 245B Design Screen Size 24” 24” Brightness 400cd/m2 400cd/m2 Contrast 1000:1 1000:1 Dynamic CR 10000:1 Response Time Input Source Analog/Digital/HDMI Analog/Digital Magic Color Magic Pivot Magictune Premium Premium...

  • Page 30: Accessories

    Quick Setup Guide BH68-01387A Warranty Card BH68-00344C (Not available in all locations) User’s Guide, Monitor Driver, BN59-00660A Natural Color software, Samsung Electronics MagicTune™ software Service center D-Sub(15 Pin) Cable BN39-00244B Shipped as assembled with the set Power Cord 3903-000085 DVI-D Cable...
  • Page 31 2. Product specifications Memo...
  • Page 32 7. Schematic Diagram 7. Schematic Diagram 7-1. Circuit Descriptions...
  • Page 33 7. Schematic Diagram 7-2. Schematic Diagram 7-2-1 Analog, Function, Sound input, Speaker out Block - This Document can not be used without Samsung’s authorization. +5V_DDC Do Not Place R101 R164 TP_DDCA_WP 10Kohm 10Kohm DDC_WP TP_DDCA_SCL XREF TP_DDCA_SDA R106 TP_DDCA_GND 0ohm...
  • Page 34 7. Schematic Diagram 7-2-2 DVI, HDMI input Block - This Document can not be used without Samsung’s authorization. +3.3V_LIVE HDMI_INPUT +5V_DDC BD1004 100nF C1141 C1148 100nF +5V_DDC DDC_SCL_HDMI MGND5 MGND3 D105 D106 D107 D108 D109 D110 D111 D112 DDC_SCL_DVI VDD50...
  • Page 35 7. Schematic Diagram 7-2-3 Scaler, Memory Block - This Document can not be used without Samsung’s authorization. +5V_PANEL DATE R9022 22ohm 1/10W LED_GREEN R360 R347 XREF +3.3V_LIVE 300ohm 300ohm R370 C360 10Kohm 10uF R348 PANEL INTERFACE 1/10W AVDD_ADC AVDD_DVI AVDD_SIF...
  • Page 36 7. Schematic Diagram 7-2-4 Power, Speaker out, Headphone out Block - This Document can not be used without Samsung’s authorization. +5V_PANEL +5V_AUDIO +5V_IN FT605 +5.8V_AMP Q701 2SC2412K-Q BLM41P600S +5V_IN SPEC_STRESS_1 C604 100nF FT604 C605 +18V_IN 100uF BLM41P600S IC702 MP3213DH CN600...

  • Page 37: Troubleshooting

    4. Troubleshooting 4. Troubleshooting 4-1. Troubleshooting Before troubleshooting, setup the PC ‘s display as below. • Resolution: 1920 x 1200 • H-frequency: 75 kHz • V-frequency: 60 Hz If no picture appears, make sure the power cord is correctly connected. Check the following circuits.

  • Page 38: When The Power Does Not Turn On

    4. Troubleshooting 4-2. When the Power Does Not Turn On The LED on the front panel of the monitor does not work when the power is connected and the Symptom Power button is pressed. Check if the Power switch on the rear panel of the monitor has been turned on. Check the SMPS fuse and the SMPS output power.
  • Page 39 4. Troubleshooting 4-2-1. Circuit Diagram and Waveform for Power Failures ① ② ②...

  • Page 40: When A Blank Screen Is Displayed (Analog)

    4. Troubleshooting 4-3. When a blank screen is displayed (Analog) The LED power is on but no picture is displayed on the screen when the D-SUB cable is Symptom connected Check if the D-SUB cable has been connected. Major checkpoints Check if the LVDS cable has been connected properly to the LCD panel.
  • Page 41 4. Troubleshooting 4-3-1. Circuit diagrams and waveforms (analog) when a blank screen is displayed on the monitor ① ② ③ ④...
  • Page 42 4. Troubleshooting ① ③ ④...

  • Page 43: When A Blank Screen Is Displayed (Digital)

    4. Troubleshooting 4-4. When a Blank Screen Is Displayed (DIGITAL) Symptom The LED power is on but no picture is displayed on the screen when the DVI cable is connected. Check if the DVI cable has been connected. Major checkpoints Check if the LVDS cable has been properly connected to the LCD panel.
  • Page 44 4. Troubleshooting 4-4-1. Circuit diagrams and waveforms (DVI) when a blank screen is displayed on the monitor ① ② ③...
  • Page 45 4. Troubleshooting ① ② ③...

  • Page 46: Error Examples And Actions

    4. Troubleshooting 4-5. 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 47: Adjustment

    4. Troubleshooting 4-6. Adjustment 4-6-1. Service Adjustment Conditions Precautions before a Service Adjustment. 1) Check whether the devices for the service adjustment are operating normally. 2) Secure a space that is sufficiently wide for disassembling the monitor. 3) Prepare a soft mat on which the monitor will be disassembled. Entering Service Mode.
  • Page 48 4. Troubleshooting Entering the Micom Code  1. Run “winDDC” 2. Click “Load File” and select the latest code in the format of “*.hex”. 4-12...
  • Page 49 4. Troubleshooting 3. Click “Program”  Entering the EDID You can update the EDID/DDC (Analog / DVI / HDMI) using the DDC Manager Jig. Connect the devices as shown below MTI-2059 DDC Manager Signal Connector Connect to the Monitor (D-SUB/ DVI/HDMI) 4-13...

  • Page 50: Service Function Spec

    4. Troubleshooting 4-6-3. Service Function Spec. 1. 1. Set the Brightness and Contrast to 0. 2. Press and hold the Enter and Source keys. 3. The SVC Function OSD appears. *To exit from the SVC Function OSD, you have to turn the power off. Panel Information Software Version Checksum...

  • Page 51: Other Functions

    4. Troubleshooting Replacing the Panel  When replacing the panel: After replacing the panel, select the Panel Ch. No. item and press and hold the MENU key for 5 seconds. The Panel Ch. No. increases by 1 and the Panel On Time is reset to 0. At the same time, the Panel Cycle is also reset to 0.
  • Page 52 4. Troubleshooting Entering the EDID  1. Install the Winddc.exe program onto the PC. 2. Click the Winddc icon. 3. Select Open. 4. Select Port #1 5. Open a DDC file. *File Name “SM2493HMA.ddc” → Analog DDC “SM2493HMD.ddc” → Digital DDC “SM2493HMH.ddc”...
  • Page 53 4. Troubleshooting 7. Enter the Monitor S/N and press Enter. Enter for Analog, Digital and HDMI. 4-17...
  • Page 54 4. Troubleshooting Memo 4-18...

  • Page 55: Wiring Diagram

    6. Wiring Diagram 6. Wiring Diagram 6-1. Wiring Diagram - Main Board CN400 CN600 CN601 CN702 CN703 CN101 CN102...
  • Page 56 6. Wiring Diagram 6-2. Wiring Diagram (Main)

  • Page 57: Wiring Diagram (Smps)

    6. Wiring Diagram 6-3. Wiring Diagram (SMPS)

  • Page 58: Wiring Diagram (Panel)

    6. Wiring Diagram 6-4. Wiring Diagram (PANEL)

  • Page 59: Connector Functions

    6. Wiring Diagram 6-5. Connector Functions Connector Name Function Description VGA Signal Input Port. CN101 *Symptom: No RGB Signal. DVI Signal Input Port. CN102 *Symptom: No DVI Signal HDMI Signal Input Port CN703 *Symptom: No HDMI Signal. CN702 Function Key Terminal. CN400 It delivers the LVDS signal from the Main Board to the Panel.
  • Page 60 6. Wiring Diagram Memo...

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