Lenovo H420 Desktop User Manual download pdf (Page 7)

Hardware Replacement Guide

Additional information resources

If you have Internet access, the most up-to-date information for your computer is

availablefromtheWorldWideWeb.

You can ﬁnd the following information:

• CRUremovalandinstallationinformation

• Publications

• 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

• Flatscrewdriver

• Phillipsscrewdriver

• Hexscrewdriver

• Plasticatscrewdriver

• Plastictweezers

Note: The screws for the different components vary in size. During the

disassembly procedure, group the screws with their corresponding

components to avoid a mismatch when replacing the components.

Handling static-sensitive devices

Static electricity is harmless to you, but it can seriously damage computer

components.

Whenyouarereplacingapart,donot open the antistatic package containing the

new part until the defective part has been removed from the computer and you are

ready to install the new part.

Take these precautions to avoid static electricity damage when handling parts and

other computer components:

• Limityourmovement.Movementcancausestaticelectricitytobuilduparound

you.

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Lenovo H420 Desktop User Manual Page 7