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Lenovo IdeaCentre H520g Hardware Maintenance Manual

Machine types: 90a3
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Lenovo H520g
Hardware Maintenance Manual
Machine Types: 90A3

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  • Page 1 Lenovo H520g Hardware Maintenance Manual Machine Types: 90A3...
  • Page 2 “Safety information” on page 3 and Appendix A “Notices” on page 103. First Edition (January 2013) © Copyright Lenovo 2013. LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is 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 3: Table Of Contents

    Specifications ....Enabling ErP compliance mode ..Lenovo Support Web site ..Changing the BIOS settings before installing a new operating system.
  • Page 4 Index....BIOS levels ....Flash update procedures ..Lenovo H520gHardware Maintenance Manual...

  • Page 5: Chapter 1. About This Manual

    This manual is intended only for trained service personnel who are familiar with Lenovo computer products. Before servicing a Lenovo computer product, be sure to read Chapter 2 “Safety information” on page 3. Chapter 7 “Symptom-to-FRU index” on page 59 and Chapter 11 “Additional service information” on page 99 are not specific to any machine type.
  • Page 6 Lenovo H520gHardware Maintenance Manual...

  • Page 7: Chapter 2. Safety Information

    Observe the following rules when working on electrical equipment. © Copyright Lenovo 2013...
  • Page 8 (This practice ensures correct grounding of the units.) • If an electrical accident occurs: – Use caution; do not become a victim yourself. – Switch off power. – Send another person to get medical aid. Lenovo H520gHardware Maintenance Manual...

  • Page 9: Voltage-Selection Switch

    Voltage-selection switch Some computers are equipped with a voltage-selection switch located near the power-cord connection point on the computer. If your computer has a voltage-selection switch, ensure that you set the switch to match the voltage available at your electrical outlet. Setting the voltage-selection switch incorrectly can cause permanent damage to the computer.

  • Page 10: Handling Electrostatic Discharge-Sensitive Devices

    Safety notices (multi-lingual translations) The caution and danger safety notices in this section are provided in the following languages: • English • Arabic • Brazilian/Portuguese • Chinese (simplified) • Chinese (traditional) Lenovo H520gHardware Maintenance Manual...
  • Page 11 • French • German • Hebrew • Italian • Korean • Spanish DANGER Electrical current from power, telephone and communication cables is hazardous. To avoid a shock hazard: • Do not connect or disconnect any cables or perform installation, maintenance, or reconfiguration of this product during an electrical storm.
  • Page 12 The device also might have more than one power cord. To remove all electrical current from the device, ensure that all power cords are disconnected from the power source. Lenovo H520gHardware Maintenance Manual...
  • Page 13 Chapter 2 Safety information...
  • Page 14 ≥18 kg (37 lbs) ≥32 kg (70.5 lbs) ≥55 kg (121.2 lbs) PERIGO A corrente elétrica proveniente de cabos de alimentação, de telefone e de comunicações é perigosa. Lenovo H520gHardware Maintenance Manual...
  • Page 15 Para evitar risco de choque elétrico: • Não conecte nem desconecte nenhum cabo ou execute instalação, manutenção ou reconfiguração deste produto durante uma tempestade com raios. • Conecte todos os cabos de alimentação a tomadas elétricas corretamente instaladas e aterradas. •...
  • Page 16 O dispositivo também pode ter mais de um cabo de alimentação. Para remover toda a corrente elétrica do dispositivo, assegure que todos os cabos de alimentação estejam desconectados da fonte de alimentação. Lenovo H520gHardware Maintenance Manual...
  • Page 17 Chapter 2 Safety information...
  • Page 18 Lenovo H520gHardware Maintenance Manual...
  • Page 19 Chapter 2 Safety information...
  • Page 20 • l'exposer à des températures supérieures à 100°C, • chercher à la réparer ou à la démonter. Ne pas mettre la pile à la poubelle. Pour la mise au rebut, se reporter à la réglementation en vigueur. Lenovo H520gHardware Maintenance Manual...
  • Page 21 ATTENTION: Si des produits à laser (tels que des unités de CD-ROM, de DVD-ROM, des unités à fibres optiques, ou des émetteurs) sont installés, prenez connaissance des informations suivantes : • Ne retirez pas le carter. En ouvrant l'unité de CD-ROM ou de DVD-ROM, vous vous exposez au rayonnement dangereux du laser.
  • Page 22 Hersteller empfohlene Batterie ersetzen. Enthält das System ein Modul mit einer Lithiumbatterie, dieses nur durch ein Modul desselben Typs und von demselben Hersteller ersetzen. Die Batterie enthält Lithium und kann bei unsachgemäßer Verwendung, Handhabung oder Entsorgung explodieren. Die Batterie nicht: • mit Wasser in Berührung bringen. Lenovo H520gHardware Maintenance Manual...
  • Page 23 • über 100 C erhitzen. • reparieren oder zerlegen. Die örtlichen Bestimmungen für die Entsorgung von Sondermüll beachten. ACHTUNG: Bei der Installation von Lasergeräten (wie CD-ROM-Laufwerken, DVD- aufwerken, Einheiten mit Lichtwellenleitertechnik oder Sendern) Folgendes beachten: • Die Abdeckungen nicht entfernen. Durch Entfernen der Abdeckungen des Lasergeräts können gefährliche Laserstrahlungen freigesetzt werden.
  • Page 24 Lenovo H520gHardware Maintenance Manual...
  • Page 25 Chapter 2 Safety information...
  • Page 26 • Riscaldarla ad una temperatura superiore ai 100 gradi C (212 gradi F) • Smontarla, ricaricarla o tentare di ripararla Le batterie usate vanno smaltite in accordo alla normativa in vigore (DPR 915/82 e successive disposizioni e disposizioni locali). Lenovo H520gHardware Maintenance Manual...
  • Page 27 ATTENZIONE: Quando vengono installati prodotti laser (quali CD-ROM, unità DVD-ROM, unità a fibre ottiche o trasmittenti), tener presente quanto segue: • Non rimuovere gli sportelli. L'apertura di un'unità laser può determinare l'esposizione a radiazioni laser pericolose. All'interno dell'unità non vi sono parti su cui effettuare l'assistenza tecnica. •...
  • Page 28 Lenovo H520gHardware Maintenance Manual...
  • Page 29 PELIGRO La corriente eléctrica procedente de cables de alimentación, teléfonos y cables de comunicación puede ser peligrosa. Para evitar el riesgo de descarga eléctrica: • No conecte ni desconecte los cables ni realice ninguna tarea de instalación, mantenimiento o reconfiguración de este producto durante una tormenta eléctrica. •...
  • Page 30 • No quite las cubiertas. Si quita las cubiertas del producto láser, podría quedar expuesto a radiación láser peligrosa. Dentro del dispositivo no existe ninguna pieza que requiera servicio técnico. • Si usa controles o ajustes o realiza procedimientos que no sean los especificados aquí, podría exponerse a radiaciones peligrosas. PELIGRO Lenovo H520gHardware Maintenance Manual...
  • Page 31 Algunos productos láser tienen incorporado un diodo láser de clase 3A o clase 3B. Tenga en cuenta lo siguiente: Cuando se abre, queda expuesto a radiación láser. No mire directamente al rayo láser, ni siquiera con instrumentos ópticos, y evite exponerse directamente al rayo láser. ≥18 kg ≥32 kg ≥55 kg...
  • Page 32 Lenovo H520gHardware Maintenance Manual...

  • Page 33: Chapter 3. General Information

    Maximum: 127 V ac Input frequency range: 50/60 Hz Voltage-selection switch setting: 115 V ac – High range: Minimum: 200 V ac Maximum: 240 V ac Input frequency range: 50/60 Hz Voltage-selection switch setting: 230 V ac © Copyright Lenovo 2013...

  • Page 34: Lenovo Support Web Site

    Lenovo Support Web site Technical support information is available on the Lenovo Support Web site at: http://www.lenovo.com/support This Web site is updated with the latest support information such as the following: • Drivers and software • Diagnostic solutions • Product and service warranty •...

  • Page 35: Chapter 4. General Checkout

    Service Support and Engineering functions. • Machine type and model • Processor or hard disk drive upgrades • Failure symptom – Do diagnostics indicate a failure? – What, when, where, single, or multiple systems? – Is the failure repeatable? © Copyright Lenovo 2013...
  • Page 36 6. Have the same diagnostic diskettes (version) 7. Have the same configuration options set in the system 8. Have the same setup for operating-system-controlled files Comparing the configuration and software set-up between “working and non-working” systems will often lead to problem resolution. Lenovo H520gHardware Maintenance Manual...

  • Page 37: Chapter 5. Troubleshooting And Diagnostics

    Chapter 5. Troubleshooting and diagnostics This chapter describes some basic troubleshooting and diagnostic programs. If your computer problem is not described here, see “Lenovo Support Web site” on page 30 for additional troubleshooting resources. Basic troubleshooting The following table provides information to help you troubleshoot your computer problems.

  • Page 38: Accessing Control Panel On The Windows 8 Operating System

    If this does not correct the problem, continue with the next step. 6. Run the diagnostic program. See “Lenovo Solution Center” on page 51 for more information. • If the diagnostic program detects a hardware failure, contact the Lenovo Customer Support Center.

  • Page 39: Troubleshooting

    • If you are unable to run the diagnostic program, contact the Lenovo Customer Support Center. See “Lenovo Support Web site” on page 30 for more information. • If the diagnostic program does not detect a hardware failure, continue with the next step.
  • Page 40 • Verify that the audio device drivers are correctly installed. See Microsoft Windows help system for more information. If these actions do not correct the problem, run the diagnostic programs (see “Lenovo Solution Center” on page 51 for instructions). If you need technical assistance, see “Lenovo Support Web site” on page 30.

  • Page 41: Cd Problems

    • If these actions do not correct the problem, run the diagnostic programs (see “Lenovo Solution Center” on page 51 for instructions). If you need technical assistance, see “Lenovo Support Web site” on page 30. CD problems Select your symptom from the following list: •...

  • Page 42: Dvd Problems

    • Try a lower screen resolution or color depth. If these actions do not correct the problem, run the diagnostic programs (see “Lenovo Solution Center” on page 51 for instructions). If you need technical assistance, see “Lenovo Support Web site” on page 30.

  • Page 43: Intermittent Problems

    (one to five hard disk drives) or the LSI MegaRAID SAS adapter is installed. If these actions do not correct the problem, run the diagnostic program Lenovo Solution Center. See “Lenovo Solution Center” on page 51. If you need technical assistance, see “Lenovo Support Web site” on page 30. Chapter 5...

  • Page 44: Keyboard, Mouse, Or Pointing Device Problems

    If these actions do not correct the problem, run the diagnostic program Lenovo Solution Center. See “Lenovo Solution Center” on page 51. If you need technical assistance, see “Lenovo Support Web site” on page 30. Keyboard, mouse, or pointing device problems Select your symptom from the following list: •...
  • Page 45 See “Enabling or disabling a device” on page 55. If these actions do not correct the problem, run the diagnostic programs (see “Lenovo Solution Center” on page 51 for instructions). If you need technical assistance, see “Lenovo Support Web site” on page 30.

  • Page 46: Monitor Problems

    If these actions do not correct the problem, run the diagnostic programs (see “Lenovo Solution Center” on page 51 for instructions). If you need technical assistance, see “Lenovo Support Web site” on page 30.

  • Page 47: Networking Problems

    ➙ Advanced Settings. Then click the Monitor tab and select a new refresh rate. • See your operating system documentation or help for further information on monitor settings. If these actions do not correct the problem, your monitor might need service. See “Lenovo Support Web site” on page 30 for details.
  • Page 48 Symptom: The adapter stops working for no apparent reason. Action: The network driver files may be corrupt or missing. Update the driver by referring to the “Solution” description for the procedure to make sure that the correct device driver is installed. Lenovo H520gHardware Maintenance Manual...

  • Page 49: A Wireless Lan Problem

    The Wake on LAN feature is not working Symptom: The Wake on LAN (WOL) feature is not working. Actions: • Make sure that WOL is enabled in the BIOS Setup Utility program. • If it is, check with your LAN administrator for the necessary settings. If your computer is a Gigabit Ethernet model and you use a speed of 1000 Mbps, the connection fails or errors occur Symptom: If your computer is a Gigabit Ethernet model and you use a speed of 1000 Mbps, the connection...

  • Page 50: Option Problems

    Bluetooth, a PIM item sent from the Windows 7 operating system might be saved as a file with the extension .contact. Option problems Use this information to diagnose problems with Lenovo hardware options that do not have their own troubleshooting information. Select your symptom from the following list: •...

  • Page 51: Performance And Lockup Problems

    If these actions do not correct the problem, run the diagnostic programs (see “Lenovo Solution Center” on page 51 for instructions). If you need technical assistance, see “Lenovo Support Web site” on page 30. An option that previously worked does not work now Symptom: An option that previously worked does not work now.
  • Page 52 1. Close any programs that are currently running and close any open windows. 2. Open the Windows Explorer and click Computer. 3. Right-click your C drive entry and then click Properties. 4. Click the Tools tab. 5. Click Optimize. 6. Click Optimize again to start a disk-defragmentation process. Lenovo H520gHardware Maintenance Manual...

  • Page 53: Printer Problems

    30. For step-by-step instructions on installing memory, see “Installing or replacing a memory module” on page 78. If these actions do not correct the problem, run the diagnostic programs (see “Lenovo Solution Center” on page 51 for instructions). If you need technical assistance, see “Lenovo Support Web site” on page 30.

  • Page 54: Software Problems

    • If you are unable to resolve the problem through other methods, uninstall the software program and reinstall it. If these actions do not correct the problem, you might need technical assistance. Contact your software manufacturer or see “Lenovo Support Web site” on page 30 for details. Lenovo H520gHardware Maintenance Manual...

  • Page 55: Usb Problems

    For additional information, refer to the Lenovo Solution Center help system. Note: If you are unable to isolate and repair the problem yourself after running the program, save and print the log files. You will need the log files when you speak to a Lenovo technical support representative. Chapter 5...
  • Page 56 Lenovo H520gHardware Maintenance Manual...

  • Page 57: Chapter 6. Using The Setup Utility Program

    • Administrator Password • Hard Disk Password You do not have to set any passwords to use your computer. However, using passwords improves computing security. If you decide to set any passwords, read the following sections. © Copyright Lenovo 2013...

  • Page 58: Password Considerations

    2. From the Setup Utility program main menu, select Security. 3. Depending on the password type, select Set Power-On Password, Set Administrator Password, or Hard Disk Password. 4. Follow the instructions on the right side of the screen to set, change, or delete a password. Lenovo H520gHardware Maintenance Manual...

  • Page 59: Erasing Lost Or Forgotten Passwords (Clearing Cmos)

    Note: A password can be any combination of up to 64 alphabetic and numeric characters. For more information, see “Password considerations” on page 54. Erasing lost or forgotten passwords (clearing CMOS) This section provides instructions on how to erase lost or forgotten passwords, such as a user password. To erase a lost or forgotten password, do the following: 1.

  • Page 60: Selecting Or Changing The Startup Device Sequence

    The after power loss feature enables your computer to wake up when the power supply resumes after a sudden loss of electricity. To enable the after power loss feature, do the following: 1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 53. Lenovo H520gHardware Maintenance Manual...

  • Page 61: Changing The Bios Settings Before Installing A New Operating System

    2. From the Setup Utility program main menu, select Power ➙ After Power Loss, and press Enter. 3. Select Power On and press Enter. 4. Press F10 to save changes and exit the Setup Utility program. Press Enter when prompted to confirm the exit.
  • Page 62 Lenovo H520gHardware Maintenance Manual...

  • Page 63: Chapter 7. Symptom-To-Fru Index

    • Microprocessor(s) connection Check the power cord for continuity. Power cord Check the power-on switch for continuity. Power-on switch Beep symptoms Beep symptoms are tones or a series of tones separated by pauses (intervals without sound) during POST. © Copyright Lenovo 2013...

  • Page 64: Post Error Codes

    0164 Memory size decreased This error message is displayed when the memory size has decreased. Press F1 to enter the Setup Utility program. Then press F10 to save and exit the Setup Utility program. Lenovo H520gHardware Maintenance Manual...
  • Page 65 POST Error code POST Error message Description/Action 1762 This error message is displayed when a hard disk Configuration change has occurred drive or optical drive change has been made. Press F1 to enter the Setup Utility program. Then press F10 to save and exit the Setup Utility program.

  • Page 66: Miscellaneous Error Messages

    Intensity or color varies from left to right of characters 1. Display and color bars 2. Video adapter (if present) 3. System Board No power or fan not running 1. See “Hard disk drive boot error” on page 59. Lenovo H520gHardware Maintenance Manual...

  • Page 67: Undetermined Problems

    Message/Symptom FRU/Action Non-system disk or disk error-type message with a 1. Diskette Drive known-good diagnostic diskette. 2. System Board 3. Diskette Drive Cable 1. Display Other display symptoms not listed above (including blank or illegible display) 2. System Board Power-on indicator or hard disk drive in-use light not on, 1.
  • Page 68 3. Turn on the power and the computer to re-test the system. 4. Repeat steps 1 through 3 until you find the failing device or adapter cards. If all devices and adapter cards have been removed, and the problem continues, replace the system board. Lenovo H520gHardware Maintenance Manual...

  • Page 69: Chapter 8. Locations

    Figure 1. Front connector, control, and indicator locations Power switch Headphone connector Hard disk drive activity indicator Microphone connector Optical drive eject/close button USB connectors (USB ports 2) Memory card reader (optional) © Copyright Lenovo 2013...

  • Page 70: Locating Connectors On The Rear Of Your Computer

    Audio line-in connector Locating major FRUs and CRUs Figure 3 “Component locations” on page 67 shows the locations of the various components in your computer. To remove the computer cover, see “Removing the computer cover” on page 72. Lenovo H520gHardware Maintenance Manual...
  • Page 71 Figure 3. Component locations The following table lists the major FRUs shown in Figure 3 “Component locations” on page 67 and identifies which FRUs also are self-service CRUs or optional-service CRUs. Notes: • Self-service CRUs: These CRUs unplug or are secured by no more than two screws. Examples of these types of CRUs include the keyboard, the mouse, any USB device, and the power cord.

  • Page 72: Locating Parts On The System Board

    SATA connectors (3) PCI Express x16 graphics card slot Front panel connector (for connecting LED System fan connector indicators and power switch) Front USB connector 1 (for connecting USB ports 1 and 2 on the front bezel) Lenovo H520gHardware Maintenance Manual...

  • Page 73: Locating Internal Drives

    Locating internal drives Internal drives are devices that your computer uses to read and store data. You can add drives to your computer to increase storage capacity and enable your computer to read other types of media. Internal drives are installed in bays. In this manual, the bays are referred to as bay 1, bay 2, and so on. When installing or replacing an internal drive, it is important to note the type and size of the drive that you can install or replace in each bay and correctly connect the cables to the drive installed.
  • Page 74 Lenovo H520gHardware Maintenance Manual...

  • Page 75: Chapter 9. Replacing Frus

    User Guide. To obtain a copy of the User Guide, go to: http://www.lenovo.com/ThinkCentreUserGuides Notes: 1. Use only computer parts provided by Lenovo. 2. When installing or replacing an option, use the appropriate instructions in this section along with the instructions that come with the option.

  • Page 76: Removing The Computer Cover

    4. Remove any locking device that secures the computer cover, such as a padlock or an integrated cable lock. 5. Remove the two screws that secure the computer cover and slide the computer cover to the rear to remove it. Figure 6. Removing the computer cover Lenovo H520gHardware Maintenance Manual...

  • Page 77: Removing And Reinstalling The Front Bezel

    Do not open your computer or attempt any repair before reading and understanding the “Important safety information” in the User Guide. To obtain a copy of the User Guide, go to: http://www.lenovo.com/ThinkCentreUserGuides This section provides instructions on how to remove and reinstall the front bezel.

  • Page 78: Installing Or Replacing A Pci Card

    To install or replace a PCI card, do the following: 1. Turn off the computer and disconnect all power cords from electrical outlets. 2. Remove the computer cover. See “Removing the computer cover” on page 72. Lenovo H520gHardware Maintenance Manual...
  • Page 79 3. At the rear of the computer, remove the screw that secures the PCI card latch. Figure 9. Removing the screw that secures the PCI card latch 4. Depending on whether you are installing or replacing a PCI card, do one of the following: •...
  • Page 80 Note: If you are installing a PCI Express x16 graphics card, make sure the memory slot retaining clips are closed before you install the graphics card. 7. Pivot the card latch to the closed position to secure the PCI card. Lenovo H520gHardware Maintenance Manual...

  • Page 81: Replacing The Battery

    Do not open your computer or attempt any repair before reading and understanding the “Important safety information” in the User Guide. To obtain a copy of the User Guide, go to: http://www.lenovo.com/ThinkCentreUserGuides Your computer has a special type of memory that maintains the date, time, and settings for built-in features, such as parallel-port assignments (configuration).

  • Page 82: Installing Or Replacing A Memory Module

    2. Remove the computer cover. See “Removing the computer cover” on page 72. 3. Lay the computer on its side for easier access to the system board. 4. Locate the memory slots. See “Locating parts on the system board” on page 68. Lenovo H520gHardware Maintenance Manual...
  • Page 83 5. Remove any parts that might prevent your access to the memory slots. Depending on your computer model, you might need to remove the PCI Express x16 graphics card for easier access to the memory slots. See “Installing or replacing a PCI card” on page 74. 6.

  • Page 84: Replacing The Optical Drive

    3. Remove the front bezel. See “Removing and reinstalling the front bezel” on page 73. 4. Remove the three screws that secure the optical drive. Then, slide the optical drive out of the front of the computer. Lenovo H520gHardware Maintenance Manual...
  • Page 85 Figure 17. Removing the optical drive 5. Slide the new optical drive into the drive bay from the front and align the screw holes in the new optical drive with the corresponding holes in the drive bay. Then, install the three screws to secure the new optical drive in place.

  • Page 86: Replacing The Heat Sink And Fan Assembly

    4. Locate the heat sink and fan assembly. See “Locating major FRUs and CRUs” on page 66. 5. Disconnect the heat sink and fan assembly cable from the microprocessor fan connector on the system board. See “Locating parts on the system board” on page 68. Lenovo H520gHardware Maintenance Manual...
  • Page 87 6. Follow this sequence to remove the four screws that secure the heat sink and fan assembly to the system board: a. Partially remove screw , then fully remove screw , and then fully remove screw b. Partially remove screw , then fully remove screw , and then fully remove screw Note: Carefully remove the four screws from the system board to avoid any possible damage to the...

  • Page 88: Replacing The Power Supply Assembly

    4-pin power connector on the system board. See “Locating parts on the system board” on page 68. 4. Lay the computer on its side and remove the four screws at the rear of the chassis that secure the power supply assembly. Figure 21. Removing the screws for the power supply assembly Lenovo H520gHardware Maintenance Manual...

  • Page 89: Replacing The Microprocessor

    8. Install and tighten the four screws to secure the power supply assembly. Note: Use only screws provided by Lenovo. 9. Reconnect the power supply assembly cables to the system board and each of the drives.
  • Page 90 Figure 22. Accessing the microprocessor 6. Lift the microprocessor straight up and out of the microprocessor socket. Figure 23. Removing the microprocessor Notes: a. Your microprocessor and socket might look different from the one illustrated. Lenovo H520gHardware Maintenance Manual...
  • Page 91 b. Note the orientation of the microprocessor in the socket. You can either look for the small triangle on one corner of the microprocessor or note the orientation of the notches on the microprocessor. This is important when installing the new microprocessor on the system board. c.

  • Page 92: Replacing The System Board

    See “Locating parts on the system board” on page 68. 6. Remove the heat sink and fan assembly from the failing system board. See “Replacing the heat sink and fan assembly” on page 82. Lenovo H520gHardware Maintenance Manual...
  • Page 93 7. Remove the six screws that secure the system board. Figure 25. Removing the six screws that secure the system board 8. Carefully slide the system board so that it can be released from the mounting studs that secure the system board in place.

  • Page 94: Replacing The Primary Hard Disk Drive

    4. Disconnect the signal cable and the power cable from the hard disk drive. 5. Remove the four screws that secure the hard disk drive. Then, slide the hard disk drive out of the chassis. Lenovo H520gHardware Maintenance Manual...
  • Page 95 Figure 27. Removing the primary hard disk drive 6. Slide the new hard disk drive into the hard disk drive bay and align the screw holes in the new hard disk drive with the corresponding holes in the drive bay. Then, install the four screws to secure the new hard disk drive in place.

  • Page 96: Replacing The Front Audio And Usb Assembly

    5. Disconnect the front audio and USB assembly cables from the system board. See “Locating parts on the system board” on page 68. Note: Make sure you note the locations of the cables when you disconnect the cables from the system board. Lenovo H520gHardware Maintenance Manual...

  • Page 97: Completing The Parts Replacement

    6. Remove the screw that secures the front audio and USB assembly bracket to the chassis to remove the bracket from the chassis. Figure 30. Removing the front audio and USB assembly 7. Install the new front audio and USB assembly into the chassis and align the screw hole in the bracket with the corresponding hole in the chassis.
  • Page 98 8. To update your configuration, refer to Chapter 6 “Using the Setup Utility program” on page 53. Note: In most areas of the world, Lenovo requires the return of the defective Customer Replaceable Unit (CRU). Information about this will come with the CRU or will come a few days after the CRU arrives.

  • Page 99: Chapter 10. Fru Lists

    Chapter 10. FRU lists This chapter lists the information on the field replaceable units (FRUs) for Lenovo desktop computer. Attention: Be sure to read and understand all the safety information before replacing any FRUs. Notes: FRUs that have a 1 or 2 in the CRU column are Customer Replaceable Units (CRUs).
  • Page 100 DVD Recorder Rambo 8 - SATA 12XRAM WRITE for DOS 71Y5545 71Y5545 DVD Recorder Rambo 8 - SATA 12XRAM WRITE for DOS DVD Recorder Rambo 8 - SATA 12XRAM WRITE for DOS 71Y5545 71Y5545 DVD Recorder Rambo 8 - SATA 12XRAM WRITE for DOS Lenovo H520gHardware Maintenance Manual...
  • Page 101 DVI_I(M)-VGA(F) adpater 54Y8255 MSI G605 512M DVI+DP WIN8 ATX Video Card 03T7096 54Y8255 DVI_I(M)-VGA(F) adpater Keyboard Lenovo Slim New F5 USB Keyboard-WIN8 54Y9494 Lenovo Slim New F5 USB Keyboard-WIN8 54Y9494 Mouse 45J4889 Lenovo Enhanced Optical USB Mouse Lenovo Enhanced Optical USB Mouse...
  • Page 102 FRU,SM_321BT_SIDE_PANEL,for brazil,Taipai IVY 20L 03T9960 03T9982 FRU,BELT,Sumba 20L FRU,WIRE_CLIP,Sumba 20L 03T9983 03T9984 FRU,MB_RUBBER_01,Sumba 20L FRU,MB_RUBBER_02,Sumba 20L 03T9985 Front main 41R6206 54Y8274 FRU Front I_O cable FRU SATA CABLE 54Y9929 54Y9948 FRU SATA CABLE Lenovo H520gHardware Maintenance Manual...

  • Page 103: Chapter 11. Additional Service Information

    “Using passwords” on page 53. Operating system password Note: This section applies only to computer models that have an operating system preinstalled from Lenovo. An operating system password is very similar to a power-on password and denies access to the computer by an unauthorized user when the password is activated.

  • Page 104: Updating (Flashing) The Bios From A Disc

    Note: You can download a self-starting bootable disc image (known as an ISO image) with the system program updates to create a system-program-update disc. Go to http://www.lenovo.com/support. To update (flash) the BIOS from a disc on the Windows 8 (64-bit) operating system, do the following: 1.

  • Page 105: Updating (Flashing) The Bios From Your Operating System

    Updating (flashing) the BIOS from your operating system Note: Because Lenovo makes constant improvements to its Web sites, the Web page contents are subject to change without notice, including the contents referenced in the following procedure. To update (flash) the BIOS from your operating system, do the following: 1.

  • Page 106: Power Management

    3. In the left panel, click Choose what the power buttons do. 4. In the Shutdown setting section, clear Turn on fast startup. Note: If the settings are unavailable, click Change settings that are currently unavailable. 5. Click Save changes. Lenovo H520gHardware Maintenance Manual...

  • Page 107: Appendix A. Notices

    Lenovo representative for information on the products and services currently available in your area. Any reference to a Lenovo product, program, or service is not intended to state or imply that only that Lenovo product, program, or service may be used. Any functionally equivalent product, program, or service that does not infringe any Lenovo intellectual property right may be used instead.

  • Page 108: Television Output Notice

    Macrovision Corporation. Reverse engineering or disassembly is prohibited. European conformance CE mark Trademarks The following terms are trademarks of Lenovo in the United States, other countries, or both: Lenovo The Lenovo logo Rescue and Recovery ThinkVantage Microsoft and Windows are trademarks of the Microsoft group of companies.

  • Page 109: Index

    USB assembly, replacing PCI card front bezel installing, replacing front bezel, removing slots front bezel, reinstalling physical specifications FRU locations power supply assembly, replacing © Copyright Lenovo 2013...
  • Page 110 BIOS, updating (flashing) 100–101 troubleshooting, basic troubleshooting, diagnostics updating (flashing) the BIOS updating (flashing) the BIOS Lenovo H520gHardware Maintenance Manual...

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