Lenovo C345, 57315617, 57312695, 57315603, C440, C445 Overview, Safety information for replacing CRUs

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Overview

This guide is intended to be used by customers who are replacing Customer Replaceable Units (CRUs) as well as trained service personnel who are replacing Field Replaceable Units (FRUs). In this guide, CRUs and FRUs will often be referred to as parts.

Note: Trained service personnel should refer to the Hardware Maintenance Manual (HMM) for parts ordering information.

This guide does not include procedures for all parts. It is expected that cables, switches, and certain mechanical parts can be replaced by trained service personnel without the need for step-by-step procedures.

Note: Use only parts provided by Lenovo®.

The description of the TV-Tuner card in this manual applies only to those computer models that have the TV-Tuner card installed. It does not apply to those computer models that do not have the TV-Tuner card installed.

This guide contains procedures for replacing the following parts:

Memory modules

Hard disk drive

Optical drive

Adapter

Keyboard, mouse (wired)

Safety information for replacing CRUs

Do not open your computer or attempt any repairs before reading the “Important safety information” in the Safety and Warranty Guide that was included with your computer. If you no longer have this copy of the Safety and Warranty Guide, you can obtain one online from the Support Web site at http://support.lenovo.com.

28User Guide

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Contents Lenovo C3/C4/C5 Series Important Safety Information Page Contents Hardware Replacement Guide Using the Computer Hardware Front view of the computer Left and right views of the computer Rear view of the computer Installing the computer stand Computer stand Connecting your computer Connecting the power cord Important information about using the computer Connecting to the Internet Wired keyboard selected models onlyUsing Windows Switching between apps Switching between the main Windows 8 interfacesCharms Bar Shutting down the computerClosing an app Opening other system programsWindows Help and Support User Guide Using the Rescue System OneKey Recovery Driver and Application Installation Method 1 Automatic InstallationMethod 2 Manual Installation User Guide Troubleshooting Confirming Setup Troubleshooting Display Problems Solving ProblemsTroubleshooting Audio Problems Troubleshooting Software Problems Troubleshooting Problems with Optical Drives and Hard Disks Special considerations for troubleshooting Windows When do I need to change the boot mode? Bios setup utilityPerforming Daily Maintenance Tasks Hardware Replacement Guide Overview Safety information for replacing CRUsTools required Additional information resourcesHandling static-sensitive devices Replacing hardware General informationRemoving the stand base Removing the foot cover Replacing a memory module Replacing the hard disk drive User Guide Replacing the optical drive User Guide Replacing the adapter Connect the new adapter as shown To replace the keyboard Replacing the keyboard and mouseDeclaration AppendixTrademarks 10102/4773 10103/4751 10104/6595 10105/6596 10110/6267 Energy Star StatementEnabling ErP compliance mode