Contents Overview ..................1 Chapter 1 Locations ..............5 Locating components ..............5 Locating connectors on the front of the computer......6 Locating connectors on the rear of the computer ......7 Identifying parts on the system board ..........12 Chapter 2 Replacing hardware ..........17 Removing the computer cover .............17 Removing and replacing the front bezel ........19 Replacing a memory module ............20...
Troubleshooting information • Parts information • Links to other useful sources of information To access this information, go to http://consumersupport.lenovo.com. Tools required To disassemble the computer, you need the following tools: • Wrist grounding strap and conductive mat for preventing electrostatic discharge •...
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• Always handle parts and other computer components carefully. Handle adapters, memory modules, system boards, and microprocessors by the edges. Never touch any exposed circuitry. • Prevent others from touching the parts and other computer components. • Before you replace a new part, touch the antistatic package containing the part to a metal expansion slot cover or other unpainted metal surface on the computer for at least two seconds.
Locations Chapter This chapter provides illustrations to help locate the various connectors, controls and components of the computer. To remove the computer cover, refer to “Removing the computer cover”. Locating components The following illustration will help you to locate the various components in your computer.
PCI express adapter card PCI express adapter connectors Power supply System fan Optical drive Hard disk drive Locating connectors on the front of the computer The following illustration shows the location of connectors on the front of the computer. Power button Optical Drive (Selected models only) Memory card reader (Selected models only) USB connectors (2)
Please refer to the keys that follow the illustrations which identify the connectors. Lenovo H415 Voltage selection switch (Selected models only) Power connector On-board VGA connector (Selected models only)
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PCI Express X 16 graphics adapter connector (Some models are equipped with a graphic card) PCI Express X 1 adapter connector (Some models are equipped with a WIFI card or TV tuner card) Lenovo H405 Voltage selection switch (Selected models only) Power connector PS/2 keyboard connector...
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PCI Express X 16 graphics adapter connector (Some models are equipped with a graphic card) PCI Express X 1 adapter connector (Some models are equipped with a WIFI card or TV tuner card) Lenovo H420 Voltage selection switch (Selected models only) Power connector PS/2 keyboard connector...
It provides basic computer functions and supports a variety of devices that are factory-installed or that you can install later. The following illustrations show the locations of parts on the system board. Lenovo H415 Microprocessor and heatsink Microprocessor fan connector...
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Front USB connectors (2) Front audio connector PCI Express X 1 adapter connectors (3) PCI Express X 16 adapter connector System fan connector 12V power connector Lenovo H405 Microprocessor and heatsink Microprocessor fan connector Memory connectors (2) Thermal sensor header connector Power connector...
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Front USB connectors (2) Clear CMOS Front audio connector PCI adapter connector PCI Express X 1 adapter connectors (2) PCI Express X 16 adapter connector System fan connector 12V power connector Lenovo H420 Microprocessor and heat sink Microprocessor fan connector Hardware Replacement Guide...
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SATA connectors (4) Front panel connector Front USB connectors (3) Serial(com2) connector Front audio connector PCI express X 1 adapter connectors (3) PCI express X 16 adapter connector System fan connector 12V power connector Lenovo H410 Microprocessor and heatsink Hardware Replacement Guide...
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Microprocessor fan connector Memory connectors (2) Thermal sensor header connector Power connector SATA IDE connectors (4) Front panel connector Clear CMOS Front USB connectors (2) Front audio connector PCI adapter connector PCI Express X 1 adapter connectors (2) PCI Express X 16 adapter connector System fan connector 12V power connector Hardware Replacement Guide...
Hardware Maintenance Manual (HMM) for the computer. To obtain copies of the Safety and Warranty Guide or HMM, go to the Support Web site at http://consumersupport.lenovo.com Note: Use only parts provided by Lenovo.
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5. Slide the computer cover to the rear of the chassis to remove it. Note: For this procedure, it helps to lay the computer on its side. Hardware Replacement Guide...
Removing and replacing the front bezel To remove and replace the front bezel: 1. Remove the computer cover. Refer to “Removing the computer cover”. Note: For this procedure, it helps to lay the computer on its side. 2. Remove the front bezel by releasing the three plastic tabs inside the chassis and pushing the bezel outward as shown.
Hardware Maintenance Manual (HMM) for the computer. To obtain copies of the Safety and Warranty Guide or HMM, go to the Support Web site at http://consumersupport.lenovo.com. To replace a memory module: 1. Remove the computer cover. Refer to “Removing the computer cover”.
Hardware Maintenance Manual (HMM) for the computer. To obtain copies of the Safety and Warranty Guide or HMM, go to the Support Web site at http://consumersupport.lenovo.com. To replace the hard disk drive: 1. Remove the computer cover. Refer to “Removing the computer cover”.
Hardware Maintenance Manual (HMM) for the computer. To obtain copies of the Safety and Warranty Guide or HMM, go to the Support Web site at http://consumersupport.lenovo.com. To replace an optical drive 1. Remove the computer cover. Refer to “Removing the computer cover”.
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5. Push the optical drive straight out of the front of the chassis. 6. Slide the new optical drive into the bay from the back until it snaps into position. 7. Secure the optical drive to the bay with the two screws. 8.
Hardware Maintenance Manual (HMM) for the computer. To obtain copies of the Safety and Warranty Guide or HMM, go to the Support Web site at: http://consumersupport.lenovo.com To replace the heatsink assembly: 1. Remove the computer cover. Refer to “Removing the computer cover”.
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7. Use the thermal grease syringe to place five drops of grease on the top of the microprocessor. Each drop of grease should be 0.03ml (3 tick marks on the grease syringe). 8. Install the heatsink and fan assembly onto the heatsink retention bracket. 9.
Hardware Maintenance Manual (HMM) for the computer. To obtain copies of the Safety and Warranty Guide or HMM, go to the Support Web site at: http://consumersupport.lenovo.com. To replace an adapter: 1. Remove the computer cover. Refer to “Removing the computer cover”.
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3. Install the new adapter into the same adapter connector. 4. Ensure the adapter is fully seated into the adapter connector. 5. Screw the latch into the chassis. 6. Refer to “Completing the installation”. Hardware Replacement Guide...
Hardware Maintenance Manual (HMM) for the computer. To obtain copies of the Safety and Warranty Guide or HMM, go to the Support Web site at http://consumersupport.lenovo.com. To replace the keyboard: 1. Remove any media (disks, CDs, or memory cards) from the drives, shut down the operating system, and turn off the computer and all attached devices.
Completing the installation After replacing a part or parts, you must close the computer cover and reconnect all the cables, including telephone lines and power cords. Some parts will require confirming updated information in the Setup Utility program. Refer to “Starting the Setup Utility”...
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“Locating connectors on the front of the computer” and “Locating connectors on the rear of the computer”. Note: In most areas of the world, Lenovo requires the return of the defective CRU. Information about this will come with the CRU or will come a few days after the CRU arrives.
Thank you for using Lenovo products. Carefully read all documents shipped with your computer before you install and use the product for the first time. Lenovo is not responsible for any loss except when caused by installation and operations performed by Lenovo professional service personnel.
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Phenom, AMD Sempron, Catalyst, Cool ‘n’ Quiet, CrossFire, PowerPlay, Radeon, and The Ultimate Visual Experience are trademarks of Advanced Micro Devices, Inc. Other company, product, or service names referred to herein or in other Lenovo publications may be trademarks or service marks of others. All rights reserved.