Samsung EX2220 Service Manual
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Samsung EX2220 Service Manual

Tft-lcd monitor
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SERVICE
TFT-LCD Monitor
EX2220 / EX2220X
Refer to the service manual in the GSPN (see the rear cover) for the more information.
LCD-Monitor
Chassis : LS22CLU
Model
: EX2220
EX2220X
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 EX2220

  • Page 1: Service Manual

    Contens 1. Precautions 2. Product specifications 3. Disassembly and Reassemble 4. Troubleshooting 5. Exploded View & Part List 6. Wiring Diagram EX2220 / EX2220X 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. 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. Feature & Specifications ....................2-1 2-2. Spec Comparison to the Old Models ................2-4 2-3.
  • Page 3 Mideast & Africa http://mea.samsungportal.com © 2010 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 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. Disassembly Caution: 1. Turn the monitor off before beginning the disassembly process. 2.
  • Page 5 3. Disassembly and Assembly Description Photo Screws 3. Turn the monitor over again .
  • Page 6 3. Disassembly and Assembly Description Photo Screws 4. Turn the monitor over again to remove the back cover. 5. Remove the LVDS, LAMP wire and FUNCTION cable then remove the SHIELD-COVER. LVDS LAMP WIRE FUNCTION 6. Remove the LCD panel. 7.
  • Page 7 3. Disassembly and Assembly Description Photo Screws 8. Remove the four (4) screws shown in the figure and remove the Bracket support. 9. Remove the main PCB and IP boards from the SHIELD-cover. ※The assembly is in the reverse order of disassembly.
  • Page 8 5. Exploded View & Part List 5. Exploded View & Part List 5-1. LS22CLUSF/XF - Exploded View...
  • Page 9 5. Exploded View & Part List 5-1-1. LS22CLUSF/XF - Parts List Location No. Code No. Description & Specification Q’ty SA/SNA Remark F001A BN96-12854C ASSY COVER P-FRONT;Cobalt 21.5,ABS+PMMA, M0014 BN94-03250A ASSY PCB MAIN;BX2240,LS22CBUABV/EN M0215 BN07-00795A LCD-PANEL;M215HW01 V6,AU21507,6bit Hi-FR P002A BN44-00367A IP BOARD-LED DRIVE;IP-23155B,Cobalt21.5" R001A BN96-12855A ASSY COVER P-REAR;Cobalt 21.5,HIPS,HB,BK...
  • Page 10 5-2. LS22CLUSF/XF - Parts List (EX2220X) Service Bom (SA: SERVICE AVAILABLE, SNA: SERVICE NOT AVAILABLE) Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark R001A BN90-02667A ASSY COVER REAR;EX2220,BLACK,texture R001A BN96-12855A ASSY COVER P-REAR;Cobalt 21.5,HIPS,HB,BK SCREW-TAPTYPE;BH,+,B,M3,L10,ZPC(BLK),S ...3 W391 6003-000275 ...3 M0113 BN61-01581A BRACKET-VESA;BI17/19BS,SECC,T1.0...
  • Page 11 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark SCREW-MACHINE;BH,+,WT,M4,L12,ZPC(WHT T0081 6001-002408 ),SW SCREW-TAPTYPE;PWH,+,- M0081 6003-000264 ,B,M3,L6,ZPC(WHT),S P002A BN44-00367A IP BOARD-LED DRIVE;IP-23155B,Cobalt21.5" M0014 BN94-03250A ASSY PCB MAIN;BX2240,LS22CBUABV/EN ...3 0202-001463 SOLDER-WIRE;LFC2-W3.0,-,D3,99.79Sn/0.2Cu 1.558 ...3 0202-001608 SOLDER-WIRE FLUX;LFC7-107,D0.8,99.3Sn/0.
  • Page 12 6902-000609 BAG ROLL;LDPE,T0.05,W2400,L1000,TRP,30.0 0.02 LABEL-SUMMARY;G52,G72,ART,100G,WHT,BL T0527 BH68-40364A PACKING INNER- BH69-00457C 00,PAD;COMM,OTHER,T3.0,880 T0527 BN68-00129A LABEL SHIPPING-00;LABEL SHIPPING,ART-PAP BN69-00391P PAD-ANGLE;OTHER,T4,50,2200,YEL T0603 BN69-00617J PALLET-PACKING;TS15AS,OTHER,1150,780,120 BN69-03565D PAD-PLATE;LD220,CB,SW,YEL,W1150,D800,520 BN69-04623A CUSHION-SET;COBALT21.5",SIMPLE,EPS,T0.01 BN92-05633P ASSY BOX;EX2220,LS22CLUSF/XF T0077 BH68-00329D LABEL BAR CODE-02;NO CE,NO WT`Y,MPRII,LA LABEL BOX-00;ALL MODEL,MOJO BH68-00659H 90G,90,95,WH...
  • Page 13 ...3 BN61-05087A ...3 CCM1 BN63-02183K COVER-SHEET;Rhcm,PE Vinyl,T 0.04,250MM,2 COVER-STAND BASE;COBALT ...3 BN63-06834A 19N,21.5~24,ABS+ RUBBER FOOT;MATISSE,BUMPON,#13.5,T2.0 ...3 AR011 BN73-00077A ...3 BN68-02691A MANUAL FLYER-STAND;COBALT,Mojo 80g,148,2 ...3 BN68-02822F LABEL-STICKER;W/W,ART PAPER,T0.05,50,10, BN91-04717B ASSY SHIELD;EX2220 CIS1 BN74-00021A TAPE-FILAMENT;Filament tape,clear,#8915, M0230 BN96-13895A ASSY CABLE P-FFC;Cobalt,FFC CABLE,JPC-S0...

  • Page 14: 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 15: 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 16: 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 17 1. Precautions Memo...

  • Page 18: Product Specifications

    2. Product specifications 2. Product specifications 2-1. Feature & Specifications Model EX2220 / EX2220X Feature Panel Specifications: 250 cd/m2, 5 ms, CR 1000:1, 170/160 (CR>10) ሪ DPMS : <0.3W ሪ Off-Timer function for reducing standby power usages ሪ Windows7 authentication ሪ...

  • Page 19: Spec Comparison To The Old Models

    2. Product specifications 2-2. Spec Comparison to the Old Models Model Cobalt (EX2220 / EX2220X) CREAM (2233NW/2233BW/2233GW) Design Resolution 1920 x 1080 1680 x 1050 Analog / DVI digital with HDCP Input Analog / DVI digital with HDCP ( 2233NW : Analog only )

  • Page 20: Accessories

    2-3. Accessories Product Description Code. No Remark Quick Setup Guide BN68-02480B Warranty Card BN68-01146D (Not available in all locations) Samsung Electronics User’s Guide, Service center Monitor Driver, BN59-00982A Natural Color Pro Software D-Sub(15 Pin) Cable BN39-00244G Power Cord 3903-000452 2-4. Accessories (Sold separately)
  • Page 21 2. Product specifications Memo...

  • Page 22: Troubleshooting

    4. Troubleshooting 4. Troubleshooting 4-1. Troubleshooting Set custom mode as follows before beginning a repair. EX2220 / EX2220X Resolution: 1920 x 1080 H-freq uency: 67 kHz V-frequency: 60 Hz If the screen is blank, check whether the power cord is connected correctly.

  • Page 23: 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 24 4. Troubleshooting 4-2-1. Circuit diagrams when the power does not turn on...

  • Page 25: When The Screen Is Blank

    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 26 4. Troubleshooting 4-3-1. When a blank screen is displayed (Analog)
  • Page 27 4. Troubleshooting 4-3-2. Waveforms when no screen is displayed (Analog) ① ③ ④...
  • Page 28 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. - Even though the LED power turns on, the screen is blank when connecting the DVI cable. - Check the DVI cable connections.
  • Page 29 4. Troubleshooting 4-4-1. Circuit diagrams when a blank screen is displayed (Digital)
  • Page 30 4. Troubleshooting 4-4-2. Waveforms when a blank screen is displayed (Digital) ② ①...

  • Page 31: 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 32: 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 33 4. Troubleshooting 4-6-2. 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 34 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 35 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 36 4. Troubleshooting Inputting the MCU Data „ 1) Check the following options. - Manufacture: MSTAR - Device Type:TSUMxxx - Communication Port: DSUB15 (Analog) - External Memory: PMC25LV020E 2) Click the LoadFile button, select an MCU code file, and then click the Open [O] button. 4-15...
  • Page 37 4. Troubleshooting 3) Click the Auto Program button. 4) When programming and verification are complete, hard power the monitor off and then on again. 4-16...
  • Page 38 4. Troubleshooting Inputting the Code (HDCP) „ 1. Run the service.exe file. 2. Click the HDCP button. 4-17...
  • Page 39 4. Troubleshooting 3. Click the HDCP Write button and select MStar_HDCPKEY. 4. Inputting the HDCP key is completed. 4-18...

  • Page 40: Wiring Diagram

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

  • Page 41: Wiring Diagram - Ip Board

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

  • Page 42: Connector Functions

    6. Wiring Diagram 6-3. Connector Functions Connector Functions CN101  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 43 6. Wiring Diagram Memo...

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Ex2220x

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