Lenovo IdeaCentre A520 Hardware Maintenance Manual
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Lenovo IdeaCentre A520 Hardware Maintenance Manual

Machine types: 6597/10106 [a520]
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IdeaCentre A520 All-In-One PC
Hardware Maintenance Manual
Machine Types: 6597/10106 [A520]

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Summary of Contents for Lenovo IdeaCentre A520

  • Page 1 IdeaCentre A520 All-In-One PC Hardware Maintenance Manual Machine Types: 6597/10106 [A520]...
  • Page 3 IdeaCentre A520 All-In-One PC Hardware Maintenance Manual Machine Types: 6597/10106 [A520]...
  • Page 4 First Edition (August 2012)25th © Copyright Lenovo 2012. LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software are delivered pursuant a General Services Administration “GSA” contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No. GS-35F-05925...

  • Page 5: Table Of Contents

    Selecting a startup device ..Replacing the power switch board ..Exiting the Lenovo BIOS Setup Utility program . . Replacing the Bluetooth module..
  • Page 6 IdeaCentre A520 All-In-One PCHardware Maintenance Manual...

  • Page 7: Chapter 1. About This Manual

    This manual contains service and reference information for IdeaCentre A520 All-In-One computers listed on the cover. It is intended only for trained servicers who are familiar with Lenovo computer products. Before servicing a Lenovo product, be sure to read the Safety Information.
  • Page 8 IdeaCentre A520 All-In-One PCHardware Maintenance Manual...

  • Page 9: Chapter 2. Safety Information

    Electrical current from power, telephone, and communication cables can be hazardous. To avoid personal injury or equipment damage, disconnect any attached power cords, telecommunication cables, network cables, and modem cables before you open the computer covers, unless instructed otherwise in the installation and configuration procedures. © Copyright Lenovo 2012...
  • Page 10 – Pumps – Blowers and fans – Motor generators and similar units. (This practice ensures correct grounding of the units.) • If an electrical accident occurs: – Use caution; do not become a victim yourself. IdeaCentre A520 All-In-One PCHardware Maintenance Manual...

  • Page 11: Safety Inspection Guide

    – Switch off power. – Send another person to get medical aid. Safety inspection guide The intent of this inspection guide is to assist you in identifying potential hazards posed by these products. Each computer, as it was designed and built, had required safety items installed to protect users and service personnel from injury.

  • Page 12: Grounding Requirements

    • Connect and disconnect cables as described in the following table when installing, moving, or opening covers on this product or attached devices. IdeaCentre A520 All-In-One PCHardware Maintenance Manual...
  • Page 13 To Connect To Disconnect 1. Turn everything OFF. 1. Turn everything OFF. 2. First, attach all cables to devices. 2. First, remove power cords from outlets. 3. Attach signal cables to connectors. 3. Remove signal cables from connectors. 4. Attach power cords to outlet. 4.
  • Page 14 To remove all electrical current from the device, ensure that all power cords are disconnected from the power source. CAUTION: Do not place any object weighing more than 82 kg (180 lbs.) on top of rack-mounted devices. IdeaCentre A520 All-In-One PCHardware Maintenance Manual...

  • Page 15: Chapter 3. General Information

    This chapter provides general information that applies to all computer models covered by this manual. Specifications This section lists the physical specifications for your computer. This section lists the physical specifications for your computer. Type IdeaCentre A520 This section lists the physical specifications. Environment Air temperature: Operating: 10°...
  • Page 16 IdeaCentre A520 All-In-One PCHardware Maintenance Manual...

  • Page 17: Chapter 4. General Checkout

    • If the computer displays a POST error, go to “POST error codes”. • If the computer hangs and no error is displayed, continue at step 7. 7. If the test stops and you cannot continue, replace the last device tested. © Copyright Lenovo 2012...
  • Page 18 IdeaCentre A520 All-In-One PCHardware Maintenance Manual...

  • Page 19: Chapter 5. Using The Setup Utility

    1. If your computer is already on when you start this procedure, shut down the operating system and turn off the computer. 2. Press and hold the F1 key then turn on the computer. When the Lenovo BIOS Setup Utility program is displayed, release the F1 key.
  • Page 20 Administrator Password if you are responsible for maintaining the settings of several computers. After you set an Administrator Password, a password prompt is displayed every time you access the Lenovo BIOS Setup Utility program. If both the Administrator and Power-On Password are set, you can type either password. However, you must use your Administrator Password to change any configuration settings.

  • Page 21: Enabling Or Disabling A Device

    When a Power-On Password is set, you cannot start the Lenovo BIOS Setup Utility program until a valid password is typed from the keyboard. Setting, changing, or deleting a Power-On Password Note: A password can be any combination of letters and numbers up to 16 characters (a-z and 0-9).

  • Page 22: Selecting A Startup Device

    Select Network Setup, press the Enter key, then select Onboard Ethernet Support or LAN Boot Agent. 4. Select Disabled or Enabled and press the Enter key. 5. Return to the Lenovo BIOS Setup Utility program menu and select the Exit option. 6. Select Save Changes and Exit from the menu. Notes: a.

  • Page 23: Exiting The Lenovo Bios Setup Utility Program

    Exiting the Lenovo BIOS Setup Utility program After you finish viewing or changing settings, press the Esc key to return to the Lenovo BIOS Setup Utility program main menu. You might have to press the Esc key several times. Do one of the following: •...
  • Page 24 IdeaCentre A520 All-In-One PCHardware Maintenance Manual...

  • Page 25: Chapter 6. Symptom-To-Fru Index

    Check that the following are properly installed: Reseat connectors • Power Cord • On/Off Switch connector • System Board Power Supply connectors • Microprocessor connections Check the power cord. Power Cord Check the power-on switch. Power-on Switch © Copyright Lenovo 2012...

  • Page 26: Post Error Codes

    3. Power-on the computer to re-test the system. 4. Repeat steps 1 through 3 until you find the failing device or component. If all devices and components have been removed and the problem continues, replace the system board. IdeaCentre A520 All-In-One PCHardware Maintenance Manual...

  • Page 27: Chapter 7. Locating Connectors, Controls And Components

    4. Power indicator 13. Volume up 5. Hard disk drive indicator 14. Brightness down 6. Bluetooth status indicator 15. Brightness up 7. Wi-Fi status indicator 16. Built-in speakers 8. HDMI-in indicator 17. Memory card reader 9. Monitor On/Off © Copyright Lenovo 2012...
  • Page 28 5. Optical drive eject button 2. USB 3.0 connector 6. Optical drive 3. HDMI-in connector (selected models only) 7. Power button 4. HDMI-out connector 8. Anti-scratch protector Attention: Do not insert 3-inch discs into the optical drive. IdeaCentre A520 All-In-One PCHardware Maintenance Manual...
  • Page 29 Rear view The following illustration shows the location of connectors and components on the rear of the computer. 1. TV tuner connector (selected models only) 5. USB 2.0 connectors (2) 2. Headphone connector 6. Power connector 3. Microphone connector 7. Ethernet connector (RJ45) 4.
  • Page 30 9. Optical drive bracket 10. Motherboard 25. Middle frame 26. Rear cover 11. Chassis 12. Speakers 27. Rear cover deco 13. Hinge 28. Touch control board 14. Camera 29. Converter 15. Wi-Fi card 30. Heat-sink IdeaCentre A520 All-In-One PCHardware Maintenance Manual...
  • Page 31 Identifying parts on the motherboard The motherboard (sometimes called the planar or system board) is the main circuit board in your computer. It provides basic computing functions and supports a variety of devices that are factory-installed or that you can install later. The following illustration shows the location of connectors and components on the front of the motherboard.
  • Page 32 The following illustration shows the location of connectors and components on the back of the motherboard. 23. TV-Tuner card connector 24. Battery IdeaCentre A520 All-In-One PCHardware Maintenance Manual...

  • Page 33: Chapter 8. Replacing Hardware

    Attention: Do not remove the computer cover or attempt any repair before reading the “Important safety information” in the Safety and Warranty Guide that was included with your computer. To obtain copies of the Safety and Warranty Guide, go to the Support Web site at: http://support.lenovo.com. Note: Use only parts provided by Lenovo.

  • Page 34: Replacing The Keyboard And Mouse

    Remove any media (disks, CDs, DVDs, or memory cards) from the drives, shut down the operating system, and turn off the computer and all attached devices. Step 2. Locate the connector for the power cord. Refer to “Rear view”. IdeaCentre A520 All-In-One PCHardware Maintenance Manual...
  • Page 35 Step 3. Disconnect the failing power adapter from the computer. Step 4. To install the new power adapter: Connect the new power adapter to the same connector. Chapter 8 Replacing hardware...

  • Page 36: Removing The Base Cover

    Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the base cover. Note: It may be helpful to place the computer face-down on a soft flat surface for this procedure. Lenovo recommends that you use a blanket, towel, or other soft cloth to protect the computer screen from scratches or other damage.

  • Page 37: Replacing The Hard Disk Drive

    Step 6. To reattach the base cover: Line up the base cover with the base, slide it back and snap it into position. Place the computer face-down on a soft flat surface, then secure the base cover to the base with the 7 screws.

  • Page 38: Replacing A Memory Module

    Refer to “Left and right view” and “Rear view” for help with locating the various connectors. Step 4. Remove the base cover. Refer to “Removing the base cover”. IdeaCentre A520 All-In-One PCHardware Maintenance Manual...

  • Page 39: Replacing The System Fan

    Step 5. Push out the latches on both sides of the memory socket to release the memory module. Gently pull the memory module upward to remove it from its socket. Step 6. To install the new memory module: Align the new memory module with the memory socket, then insert it and push down on the top edge.

  • Page 40: Replacing The Heat-Sink

    “Rear view” for help with locating the various connectors. Step 4. Remove the base cover. Refer to “Removing the base cover”. Step 5. Remove the system fan. Refer to “Replacing the system fan”. IdeaCentre A520 All-In-One PCHardware Maintenance Manual...

  • Page 41: Replacing The Cpu

    Step 6. Remove the 9 screws that secure the heat-sink to the motherboard. Step 7. Lift up the heat-sink to remove it. Attention: Place the heat-sink upside down on a flat surface to prevent thermal grease from contaminating other components. Step 8.
  • Page 42 Step 10. Holding the sides of the microprocessor with your fingers, position the microprocessor so that the notches on the microprocessor are aligned with the tabs in the microprocessor socket. Important: To avoid damaging the microprocessor contacts, keep the microprocessor completely level while installing it into the socket. IdeaCentre A520 All-In-One PCHardware Maintenance Manual...

  • Page 43: Replacing The Optical Drive

    Step 11. Lower the microprocessor straight down into its socket on the motherboard. Step 12. To secure the microprocessor by turning the CPU lock screw clockwise to lock the CPU into position. Step 13. Use a thermal grease syringe to place 5 drops of grease on the top of the microprocessor. Each drop of grease should be 0.03 ml (3 tick marks on the grease syringe).
  • Page 44 Remove the 3 screws that secure the optical drive to the motherboard and lift the optical drive up to remove it. Step 7. Remove the 4 screws that secure the optical drive to the bracket and disconnect the data connector from the rear of optical drive. IdeaCentre A520 All-In-One PCHardware Maintenance Manual...

  • Page 45: Replacing The Solid State Disk

    Step 8. Use a small flat head screwdriver to press and push out the pins that secure the cover to the drive. Step 9. Separate the cover from the defective optical drive. Step 10. Install the new optical drive as follows: Align the new optical drive with the cover, and then attach the cover to the new optical drive.

  • Page 46: Replacing The Motherboard

    Step 11. Remove the solid state disk. Refer to “Replacing the solid state disk”. Step 12. Remove all the cables connected to the motherboard. Step 13. Remove the 4 screws that secure the speakers, then detach them from the chassis and put them aside. IdeaCentre A520 All-In-One PCHardware Maintenance Manual...
  • Page 47 Step 14. Remove the 7 screws that secure the motherboard to the chassis and slide it out as shown. Step 15. Remove the 2 screws that secure the TV-Tuner card to the motherboard. Step 16. Disconnect the antenna cable(s) from the TV-Tuner card. Step 17.
  • Page 48 Attach the solid state disk, optical drive, CPU, heat-sink, system fan, memory module, and hard disk drive to the new motherboard. Connect all the cables to the new motherboard. Step 20. Reattach the base cover and secure it with the screws. IdeaCentre A520 All-In-One PCHardware Maintenance Manual...

  • Page 49: Replacing The Speaker System

    Replacing the speaker system Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the base cover. To replace the speaker system: Step 1. Remove any media (disks, CDs, DVDs, or memory cards) from the drives, shut down the operating system, and turn off the computer and all attached devices.

  • Page 50: Replacing The Tv Tuner Card

    Remove the heat-sink. Refer to “Replacing the heat-sink”. Step 9. Remove all the cables connected to the motherboard. Step 10. Remove the 4 screws that secure the speakers, then detach them from the chassis and put them aside. IdeaCentre A520 All-In-One PCHardware Maintenance Manual...
  • Page 51 Step 11. Remove the 7 screws that secure the motherboard to the chassis and slide it out as shown. Step 12. Remove the 2 screws that secure the TV-Tuner card to the motherboard. Step 13. Disconnect the antenna cable(s) from the TV-Tuner card. Step 14.

  • Page 52: Replacing The Battery

    Step 10. Remove the 4 screws that secure the speakers, then detach the speakers from the chassis and put them aside. Step 11. Remove the 7 screws that secure the motherboard to the chassis and slide it out as shown. IdeaCentre A520 All-In-One PCHardware Maintenance Manual...

  • Page 53: Removing The Hinge From The Chassis

    Step 12. Use a flat head screwdriver as a lever to prise out the battery as shown. Step 13. To install the new battery: Insert the new battery (CR2032) into the socket with the side labeled “+” facing up, and press the battery into place.
  • Page 54 Secure the hinge to the chassis with the 6 screws. Reconnect the scalar headphone input, scalar and DVI/HDMI cables to the motherboard. Step 8. Reattach the base cover and secure it with the screws. IdeaCentre A520 All-In-One PCHardware Maintenance Manual...

  • Page 55: Removing The Rear Cover

    Removing the rear cover Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the base cover. To remove the rear cover: Step 1. Remove any media (disks, CDs, DVDs, or memory cards) from the drives, shut down the operating system, and turn off the computer and all attached devices.

  • Page 56: Replacing The Scalar Board

    Line up the holes on the new scalar board with the mounting holes on the middle frame and secure the new scalar board with the 5 screws. Connect all the cables to the new scalar board. IdeaCentre A520 All-In-One PCHardware Maintenance Manual...

  • Page 57: Replacing The Touch Control Board

    Step 10. Reattach the rear cover to the LED panel. Step 11. Reattach the hinge to the chassis, and reconnect the scalar headphone input, scalar and DVI/HDMI cables to the motherboard. Step 12. Reattach the base cover and secure it with the screws. Replacing the touch control board Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the base cover.

  • Page 58: Replacing The Converter Board

    Step 7. Remove the 4 screws that secure the converter board to the middle frame. Step 8. Disconnect the 2 cables from the converter board. Step 9. Lift up the converter board to remove it. IdeaCentre A520 All-In-One PCHardware Maintenance Manual...

  • Page 59: Replacing The Power Switch Board

    Step 10. To install the new converter board: Line up the holes on the new converter board with the mounting holes on the middle frame and secure it with the 4 screws. Connect the 2 cables to the new converter board. Step 11.

  • Page 60: Replacing The Bluetooth Module

    Connect the cable to the new Bluetooth module. Line up the new Bluetooth module with the socket, snap it into position and secure it with the pins. Step 10. Reattach the rear cover to the LED panel. IdeaCentre A520 All-In-One PCHardware Maintenance Manual...

  • Page 61: Replacing The Wi-Fi Card

    Step 11. Reattach the hinge to the chassis, and reconnect the scalar headphone input, scalar and DVI/HDMI cables to the motherboard. Step 12. Reattach the base cover and secure it with the screws. Replacing the Wi-Fi card Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the base cover. To replace the Wi-Fi card: Step 1.

  • Page 62: Replacing The Camera

    Step 13. Reattach the base cover and secure it with the screws. Replacing the front function board Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the base cover. IdeaCentre A520 All-In-One PCHardware Maintenance Manual...

  • Page 63: Replacing The Led Panel

    To replace the front function board: Step 1. Remove any media (disks, CDs, DVDs, or memory cards) from the drives, shut down the operating system, and turn off the computer and all attached devices. Step 2. Unplug all power cords from electrical outlets. Step 3.
  • Page 64 Note: It may be helpful to place the computer face-down on a soft flat surface for this procedure. Lenovo recommends that you use a blanket, towel, or other soft cloth to protect the computer screen from scratches or other damage.

  • Page 65: Fru Lists

    Step 16. Remove all the cables attached to the middle frame and the front bezel. Step 17. Remove the 5 screws that secure the hinge to the middle frame and set the hinge aside. Step 18. To install the new the LED panel: Line up the holes on the hinge with the mounting holes on the new middle frame and secure it with 5 screws.
  • Page 66 A520 AVC DIS 45W Heat Sink 90201511 90201512 A520 AVC UMA 45W Heat Sink System fan A720 Delta DIS 45W Fan 90200584 90201256 A720 AVC DIS 45W Fan Wi-Fi card A720 Wlan Card 90000171 Converter A720 Converter 90000215 IdeaCentre A520 All-In-One PCHardware Maintenance Manual...
  • Page 67 Power switch A720 Power Board 90000214 board Front function A720 LED Function Board 90000216 board Scalar board A520 Scalar Board 90001192 Touch control A520 Touch Control Board 90001193 board 22-25 LCD Module A520 LCD Module For LG 90400073 90200731 Cables A720 HDD Cable A720 ODD Cable 90200732...
  • Page 68 WD WD5000BPVT-24A1YT0 5400PRM 9.5mm 16200089 500 HDD 16200067 HGST Jaguar B7 500G/P SATA2.0 5400RPM interface 4K sector generation 16200211 Seagate Yarra-1D 500G/P SATA2.0 5400RPM interface 4K sector generation 16200210 ST500LM012 5.4K 9.5 500G HDD IdeaCentre A520 All-In-One PCHardware Maintenance Manual...
  • Page 69 WD5000LPVT-08G33T1 7mm 5.4K rpm 500G 16200264 750G 5400rpm WD WD7500BPVT-24HXZT3 5400RPM 750G 16004848 SATAII HDD HT HTS547575A9E384 5400RPM 750G HDD 16200008 9.5mm WD WD7500BPVT-24A1YT0 5400PRM 9.5mm 16200088 750 HDD HGST Jaguar B 750G/P SATA2.0 5400RPM 16200192 interface 4K sector generation product ST750LM022 5.4K 9.5 750G HDD 16200209 1TB 5400RPM...
  • Page 70 Volex 1.0m C5 Switzerland Power Cable 31049508 31039107 Longwell Black Single-end 1.0m Israel C5Power Cable® Volex 1.0m C5 Israel Power Cable 31049502 Longwell Black Single-end 1.0m Taiwan 31038885 C5Power Cable® Volex 1.0m C5 Taiwan Power Cable 31049499 IdeaCentre A520 All-In-One PCHardware Maintenance Manual...
  • Page 71 Longwell Black Single-end 1.0m Korea C5Power 31039106 Cable® Volex 1.0m C5 Korea Power Cable 31049498 31039105 Longwell Black Single-end 1.0m SA C5Power Cable® 31049501 Volex 1.0m C5 SA Power Cable TV-Tuner card CastleNet RTL8188CU USB 11N WiFi module 11201071 Avermedia H334 DVB-T Mini TV Card Avermedia H339BB DVB-T Mini TV Card 11200290 11201072...
  • Page 72 90200562 Liteon SK-8861(RU) S-Silk KB-Silver（WW） Liteon SK-8861(US-EU)S-SilkKB-Silver（WW） 90200563 90200564 Liteon SK-8861(SL) S-Silk KB-Silver（WW） Liteon SK-8861(BG) S-Silk KB-Silver（WW） 90200565 90200566 Liteon SK-8861(HU) S-Silk KB-Silver（WW） Liteon SK-8861(TR) S-Silk KB-Silver（WW） 90200567 90200568 Liteon SK-8861(US-MY)S-SilkKB-Silver（WW） Liteon SK-8861(LA-AR)S-SilkKB-Silver（WW） 90200569 IdeaCentre A520 All-In-One PCHardware Maintenance Manual...

  • Page 73: Chapter 9. General Information

    • Wake Up on Alarm: You can specify a date and time at which the computer will be turned on automatically. This can be either a single event , a daily event or a weekly event. • Wake Up on LAN: This feature allows LAN adapter card to wake the System. © Copyright Lenovo 2012...

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