Samsung S22A350H Service Manual
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Samsung S22A350H Service Manual

Tft-lcd monitor
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SERVICE
TFT-LCD Monitor
S22A350H / S23A350H /
S24A350H / S27A350H
LCD-Monitor
Chassis : L3S22HS
L3S23HS
L3S24HS
L3S27HS
Model
: S22A350H
S23A350H
S24A350H
S27A350H
Manual
1. Precautions
2. Product specifications
3. Disassembly and Reassemble
4. Troubleshooting
5. Wiring Diagram
Contens

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Summary of Contents for Samsung S22A350H

  • Page 1 LCD-Monitor Chassis : L3S22HS L3S23HS L3S24HS L3S27HS Model : S22A350H S23A350H S24A350H S27A350H SERVICE Manual TFT-LCD Monitor Contens 1. Precautions 2. Product specifications 3. Disassembly and Reassemble 4. Troubleshooting 5. Wiring Diagram S22A350H / S23A350H / S24A350H / S27A350H...

  • 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 ................2-3 2-3.
  • Page 3 This Service Manual is a property of Samsung Electronics Co.,Ltd. © 2010 Samsung Electronics Co.,Ltd. Any unauthorized use of Manual can be punished under applicable All rights reserved. International and/or domestic law. Printed in Korea...

  • 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 5. Remove the main PCB from the SHIELD- HOLDER. 6. We get the PBA. ※ Reassembly procedures are in the reverse order of disassembly procedures.

  • Page 6: 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 7: 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 8: 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 9 1. Precautions Memo...

  • Page 10: Product Specifications

    S27A350H : 300 cd/m , 2 ms, CR 1000:1, 170/160 (CR>10) DPMS ሪ S22A350H, S23A350H, S24A350H : Typical 0.3W / Max 0.4W S27A350H : Typical 0.5W / Max 0.6W Off-Timer function for reducing standby power usages ሪ Windows Vista/Windows 7 authentication ሪ...
  • Page 11 2. Product specifications Specifications Item Description Model S24A350H S27A350H LCD Panel TFT-LCD panel, RGB vertical stripe, normally white transmissive 24” Wide viewable 27” Wide viewable 0.27675(H)x0.27675(V)mm Pixel Pitch 0.31125(H) x 0.31125(V)mm Pixel Pitch Scanning Frequency Horizontal : 30kHz ~ 81kHz (Automatic) Vertical: 56Hz ~ 75Hz Display Colors 16.7 Million colors...

  • Page 12: Spec Comparison To The Old Models

    Analog / HDMI with HDCP Analog / HDMI with HDCP Response Time 2ms(G to G) 2ms(G to G) Viewing Angle 170/160(CR>10) 170/160(CR>10) 250 cd/m² Brightness (S22A350H / S23A350H / S24A350H) 250 cd/m² 300 cd/m² (S27A350H) Contrast MEGA:1(DCR) MEGA:1(DCR) MagicBright 5 step 5 step MagicAngle...

  • Page 13: Accessories

    Warranty Card BN68-01146D (Not available in all locations) User’s Guide, Monitor Driver, BN59-01128A Natural Color Pro Software Cleaning Cloth BN63-02368B Samsung Electronics Service center D-Sub(15 Pin) Cable BN39-00244H Power Cord 3903-000382 BN44-00394C Adapter (S22A350H, S23A350H, S24A350H) BN44-00394A Adapter BN44-00399A (S27A350H)

  • Page 14: Accessories (Sold Separately)

    2. Product specifications 2-4. Accessories (Sold separately) Product Description Code. No Remark DVI to HDMI Cable BN39-01353B Samsung Electronics Service center HDMI Cable BN39-00641A...
  • Page 15 2. Product specifications Memo...

  • Page 16: Troubleshooting

    4. Troubleshooting 4. Troubleshooting 4-1. Troubleshooting Set custom mode as follows before beginning a repair. Resolution: 1920 X 1080 H-frequency: 67.5 kHz V-frequency: 60 Hz If the screen is blank, check whether the power cord is connected correctly. The circuits to check: •...

  • Page 17: 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. - Check the IC604 power fuse and the IC604 output power. - Check the connections for the CN601 and the Main board inside the monitor.
  • Page 18 4. Troubleshooting 4-2-1. Circuit diagrams when the power does not turn on...

  • Page 19: When The Screen Is Blank (Analog)

    4. Troubleshooting 4-3. When the screen is blank (Analog) Symptom - Even though the LED power turns on, the screen is blank when connecting the VGA cable. - Check the D-sub cable connections. Major checkpoints - Check whether the LVDS cable is connected correctly to the panel. - Check whether the lamp connector of the panel is connected correctly to the Main board.
  • Page 20 4. Troubleshooting 4-3-1. When a blank screen is displayed (Analog)
  • Page 21 4. Troubleshooting 4-3-2. Waveforms when no screen is displayed (Analog) ① ③ ④...

  • Page 22: When A Blank Screen Is Displayed (Hdmi)

    4. Troubleshooting 4-4. 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 cable is connected correctly to the panel. - Check whether the lamp connector of the panel is connected correctly to the Mainboard.
  • Page 23 4. Troubleshooting 4-4-1. Circuit diagrams when a blank screen is displayed (HDMI)
  • Page 24 4. Troubleshooting 4-4-2. Waveforms when a blank screen is displayed (HDMI) ② ①...

  • Page 25: Error Examples And Actions

    4. Troubleshooting 4-5. Error Examples and Actions Error Appearance Symptoms and Actions Remarks Symptom: HDMI 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 HDMI DDC is not input to the monitor.

  • Page 26: 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 27 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 28 4. Troubleshooting 2. Press the - button to change the setting to On or Off. Service Function Monitor On Time : 13 Hr Panel Ch. No. : On Time : 13 Hr Cycle Auto Auto Pixelshift PixeShift Country English HotPlug Time Service Function Monitor On Time : 13 Hr...
  • Page 29 4. Troubleshooting Inputting the DDC Data „ Use the DDC Manager MTI-2050 version or later. 1) Click the Open [F5] icon. 2) Select Two EDID . 3) Select one DDC ile,do it two times. 4) Click [O] button. 5) Enter the serial number and then press the Enter button. When inputting one data , select one EDID at steps 2 .
  • Page 30 4. Troubleshooting Inputting the MCU Data „ 1) Check the following options after open the “Easywriter” - Option: Setup ISP tool - LPT Port Offset: 378 - ISP Jig type Selection: SAMSUNG - Auto detect - Confirm Change 4-15...
  • Page 31 4. Troubleshooting 2) Click the Load File button. 3) Select an MCU code file, and then click the Open[O] button. 4-16...
  • Page 32 4. Troubleshooting 4) Click the Auto button. 5) When programming and verification are complete, hard power the monitor off and then on again. 4-17...
  • Page 33 4. Troubleshooting Inputting the Code (HDCP) „ 1. Run the service.exe file. 2. Click the HDCP button. 4-18...
  • Page 34 4. Troubleshooting 3. Click the Load HDCP button and select HDCPKEY_NOVATEK. 4. Inputting the HDCP key is completed. 4-19...
  • Page 35 4. Troubleshooting Memo 4-20...

  • Page 36: Wiring Diagram

    5. Wiring Diagram 5. Wiring Diagram 5-1. Wiring Diagram - Main Board...

  • Page 37: Board Connection - Main Board

    5. Wiring Diagram 5-2. Board Connection - Main Board LVDS Connector (Connect Panel) CN400 LED Connector CN902 CN402 CN600 CN100 CN300 Function Connector DC Jack RGB Connector (Connect to PC) HDMI Connector (Connect to PC)

  • Page 38: Connector Functions

    Transmits the LVDS signals from the main board to the panel. * When a problem occurs: The Blank screen and No Power errors may occur. 5-4. Cables LVDS 30P FFC cable BN96-13722P (S27A350H) BN96-13722X (S22A350H) BN96-13227V (S23A350H) Code BN96-13722S (S24A350H) Photo...
  • Page 39 5. Wiring Diagram Memo...

This manual is also suitable for:

S23a350hS24a350hS27a350h

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