Lenovo H520S manual Replacing the CPU

Page 45

Step 3. Disconnect all cables attached to the computer. This includes power cords, input/output (I/O) cables, and any other cables that are connected to the computer. Refer to “Left and right view” and “Rear view” for help with locating the various connectors.

Step 4. Remove the computer cover. Refer to “Removing the computer cover”.

Step 5. Remove the microprocessor fan. Refer to “Replacing the microprocessor fan”.

Step 6. Remove the 4 screws that secure the heat-sink to the motherboard.

Step 7. Lift up the heat-sink to remove it.

Step 8. Install the new heat-sink：

a.Line up the screws on the new heat-sink with mounting holes on the motherboard and secure it with the 4 screws.

b.Reattach the microprocessor fan to the heat-sink.

c.Reconnect the microprocessor fan power cable to the connector on the motherboard.

Step 9. Reattach the computer cover.

Replacing the CPU

Note: For this procedure, it helps to lay the computer flat.

To replace the CPU:

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. Disconnect all cables attached to the computer. This includes power cords, input/output (I/O) cables, and any other cables that are connected to the computer. Refer to “Left and right view” and “Rear view” for help with locating the various connectors.

Step 4. Remove the computer cover. Refer to “Removing the computer cover”.

Step 5. Remove the microprocessor fan. Refer to “Replacing the microprocessor fan”.

Chapter 8. Replacing hardware 39

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Contents Lenovo H520s Hardware Maintenance Manual Page Lenovo H520s Hardware Maintenance Manual Page Contents Iv Lenovo H520sHardware Maintenance Manual About this manual Important Safety InformationLenovo H520sHardware Maintenance Manual Safety information General safetyElectrical safety Lenovo H520sHardware Maintenance Manual Handling electrostatic discharge-sensitive devices Safety inspection guideGrounding requirements Safety noticesTo Connect To Disconnect Do not≥18 kg37 lbs ≥32 kg70.5 lbs ≥55 kg121.2 lbs General information SpecificationsType Lenovo H520s EnvironmentLenovo H520sHardware Maintenance Manual General Checkout Lenovo H520sHardware Maintenance Manual Starting the Lenovo Bios Setup Utility program Using the Setup UtilityViewing and changing settings Using passwordsAdministrator Password Setting, changing, or deleting an Administrator passwordSetting, changing, or deleting a Power-On Password Select Save changes and Exit from the menu Enabling or disabling a deviceSelecting a startup device Selecting a temporary startup deviceSelecting or changing the startup device sequence Exiting the Lenovo Bios Setup Utility program Lenovo H520sHardware Maintenance Manual Hard disk drive boot error Symptom-to-FRU IndexPower Supply Problems Error FRU/ActionPost error codes Undetermined problemsPost Error Message Description/Action Locating connectors, controls and components Font view Rear view Hardware components Identifying parts on the motherboard Lenovo H520sHardware Maintenance Manual Pre-disassembly instructions Replacing hardwareGeneral information Removing the computer cover Replacing the keyboard and mouseTo replace the keyboard and mouse To remove the computer coverRemoving the front bezel Replacing an optical drive To remove the front bezelTo replace an optical drive Replacing hardware To replace the hard disk drive Replacing the hard disk driveReplacing a memory module Replacing the Power supply Replacing the graphic card Lenovo H520sHardware Maintenance Manual Replacing the microprocessor fan Replacing the system fanReplacing the heat-sink Replacing the CPU Lenovo H520sHardware Maintenance Manual Replacing the Wi-Fi card Replacing the front USB/card reader/audio module Replacing the motherboard Lenovo H520sHardware Maintenance Manual Processor FRU listsMother Board MemoryMT16JTF51264AZ-1G4D1 4GB DDRIII1333RAMR Hard Drive HMT351U6CFR8C-PB 4GB D3-1600RAM-HFOptical Drive Power SupplyGraphic Card MechanicalRemote Controller Wi-Fi PCI-E Interface CardTV Tunner USB 3.0 PCI-E Interface CardKeyboard & Mouse Chassis Lenovo H520sHardware Maintenance Manual Power management Additional Service InformationAdvanced configuration and power interface Acpi Bios Automatic Power-On features
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H520S specifications

The Lenovo H520S is a compact desktop PC designed to cater to both home and office environments. It combines sleek design with robust performance, making it an excellent choice for users seeking versatility in a desktop system. One of the standout features of the H520S is its powerful computing capabilities, driven by Intel's third-generation Core processor family. This ensures that tasks ranging from everyday browsing to demanding applications run smoothly and efficiently.

The design of the Lenovo H520S is notably space-saving, allowing it to fit comfortably in various environments without taking up excessive desk space. With a brushed metal finish and minimalist aesthetic, it blends seamlessly with modern office setups and home entertainment centers alike. The compact chassis not only contributes to its stylish appearance but also enhances portability, making it easier to transport if needed.

In terms of performance, the H520S is equipped with up to 16GB of DDR3 RAM, which provides ample memory for multitasking and running multiple applications simultaneously. The inclusion of integrated graphics and support for discrete graphics options allows users to engage in casual gaming and enjoy multimedia content without lag. For storage, the system offers a range of hard drive options, including traditional HDDs and faster SSDs, catering to different performance and capacity needs.

The desktop is also designed with connectivity in mind. It features multiple USB ports, HDMI output, and audio jacks, ensuring compatibility with a wide range of peripherals and devices. Additionally, the Lenovo H520S includes built-in Wi-Fi and Ethernet options for seamless internet connectivity, enabling users to stay connected whether working from home or in a busy office.

User convenience extends to its energy efficiency, with the H520S being Energy Star certified. This not only contributes to lower energy bills but also reflects Lenovo's commitment to sustainability. Overall, the Lenovo H520S stands out with its combination of compact design, powerful performance, and thoughtful features, making it an ideal choice for anyone looking for a reliable desktop solution that meets both personal and professional needs.
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