Lenovo K305 User Manual

Version 1.1 2009.10

Hardware Replacement Guide

IdeaCentre K3 Series

31041387

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Hardware Replacement Guide

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Contents

Overview ..................................................................................... 1

Chapter 1

Locations ................................................................ 4

Locating components and connectors ...........................................4

Identifying parts on the system board ...........................................7

Chapter 2 Replacing hardware ............................................... 9

General information ........................................................................9

Removing the computer cover ......................................................9

Removing the front bezel .............................................................11

Replacing a memory module ......................................................12

Replacing the hard disk drive .......................................................13

Replacing an optical drive ............................................................14

Replacing the system fan assembly .............................................15

Replacing the heat sink assembly ...............................................18

Replacing a PCI or AGP adapter .................................................20

Replacing the CPU ......................................................................26

Replacing the keyboard ..............................................................29

Replacing the mouse ..................................................................30

Replacing the External speaker ...................................................31

Completing the installation ..........................................................31

Appendix. .................................................................................. 33

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Hardware Replacement Guide

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

• Heatsink, Fan

• CPU

• VGA card

• Keyboard, Mouse (wired)

• External speaker

Safety information for replacing CRUs

Do not open your computer or attempt any repair 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://consumersupport.lenovo.com.

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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 ﬂat 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, although harmless to you, can seriously damage computer components.

When you are replacing a part, do not open the static-protective package containing the new part until the defective part has been removed from the computer and you are ready to install the new part.

When you handle parts and other computer components, take these precautions to avoid static-electricity damage:

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Hardware Replacement Guide

• Limit your movement. Movement can cause static-electricity to build up around you.

• 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 static-protective package containing the part to a metal expansion-slot cover or other unpainted metal surface on the computer for at least two seconds. This reduces static electricity in the package and your body.

• When possible, remove the new part from the static-protective packaging, and install it directly in the computer without setting the part down. When this is not possible, place the static-protective package that the part came in on a smooth, level surface and place the part on it.

• Do not place the part on the computer cover or other metal surface.

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Hardware Replacement Guide

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 and connectors

The following illustrations will help you to locate the various components and connectors in your computer.

Internal components

The following illustration shows the components inside your computer.

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Hardware Replacement Guide

Power supply PCI Express adapter card

System fan Memory modules

Microprocessor fan and heat sink Hard disk drive

PCI Express adapter connector Optical drive

Front view

The following illustrations show the location of connectors on the front of the computer.

5 6

Power button

Power Dial indicator ON/OFF

File backup button

USB connector

Microphone connector

Headphone connector

Memory card reader (selected models only)

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Hardware Replacement Guide

Optical drive (Some models are equipped with only one optical drive.)

Power Dial switch

Rear view

The following illustration shows the location of connectors on the rear of the computer.

Voltage selection switch (selected models only)

Power connector

PS/2 keyboard connector

PS/2 mouse connector

Serial connector (selected models only)

On-board VGA connector (selected models only)

USB connectors (6)

Ethernet connector

Microphone connector

Audio line-out connector

Audio line-in connector

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Hardware Replacement Guide

PCI Express x16 graphics adapter connector (Some models are equipped with this connector. For more information about the graphics adapter, see the description below).

WiFi antenna connector (This connector only equipped on the model with WiFi card. For more information about this connector, see WM600-B-LO Wireless 802. 11b/g Wireless PCI-E Adapter Card User Manual.)

TV-Tuner(selected models only)

Identifying parts on the system board

The system board (sometimes called the planar or motherboard) is the main circuit board in your computer. It provides basic computer functions and supports a variety of devices that are factory-installed or that you can install later.

The following illustration shows the locations of parts on the system board.

12V power connector

Microprocessor and heat sink

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Hardware Replacement Guide

Microprocessor fan connector

Memory connectors(2)

Thermal sensor header connector

Power connector

E-SATA connector

SATA IDE connectors(3)

Front panel connector

Front USB connectors(3)

Serial (com2) connector

Power fan connector

Front audio connector

PCI adapter connector

PCI Express x1 adapter connectors(2)

PCI Express x16 graphics adapter connector

System fan connector

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Hardware Replacement Guide

Attention:

Do not remove the computer cover or attempt any repair before reading the

“Important safety information” in the Safety and Warranty Guide that was included with your computer or in the 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.

General information

Pre-disassembly instructions

Before proceeding with the disassembly procedure, make sure that you do the following:

1. Turn off the power to the system and all peripherals.

2. Unplug all power and signal cables from the computer.

3. Place the system on a ﬂat, stable surface.

Removing the computer cover

Attention:

Turn off the computer and wait 3 to 5 minutes to let the computer cool

before removing the computer cover.

To remove the computer cover:

1. Remove any media (diskettes, CDs, or memory cards) from the drives, shut down your operating system, turn off all attached devices, and the computer.

2. Unplug all power cords from electrical outlets.

Replacing hardware

Chapter

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