Lenovo-G470G475G570G575-Hardwa.pdf

Lenovo G470/G475/G570/G575

Hardware Maintenance Manual

Note:

Before using this information and the product it supports, be sure to read the general information under "Notices" on page 89.

First Edition (Dec. 2010)

© Copyright Lenovo 2010. All rights reserved.

LENOVO products, data, computer software, and services have been developed exclusively at private expense and are sold to governmental entities as commercial items as defined by 48 C.F.R. 2.101 with limited and restricted rights to use, reproduction and disclosure.

LIMITED AND RESTRICTED RIGHTS NOTICE: If products, data, computer software, or services are delivered pursuant to General Services Administration "GSA" contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No. GS-35F-05925.

Contents

About this manual iv
Safety information ..1
General safety ..2
Electrical safety ..3
Safety inspection guide ..5
Handling devices that are sensitive to electrostatic discharge ..6
Grounding requirements ..6
Safety notices: multilingual translations ..7
Laser compliance statement ..14

Important service information ..16
Strategy for replacing FRUs ..16
Strategy for replacing a hard disk drive ..17
Important notice for replacing a system board ..17
Important information about replacing RoHS compliant FRUs ..18

General checkout ..19
What to do first ..20
Power system checkout ..21
Checking the AC adapter ..21
Checking operational charging ..21
Checking the battery pack ..22

Related service information ..23
Restoring the factory contents by using OneKey Recovery ..23
Restore of factory default ..23
Using recovery discs ..23
Passwords ..24
Power-on password ..24
Supervisor password ..24
Power management ..25
Screen blank mode ..25
Sleep (standby) mode ..25
Hibernation mode ..26

Lenovo G470/G475/G570/G575 ..27
Specifications ..27
Status indicators ..29
Fn key combinations ..31
FRU replacement notices ..32
Screw notices ..32
Removing and replacing an FRU ..33
1010 Battery pack ..34
1020 Dummy cards ..35
1030 Optical drive ..36
1040 Hard disk drive (HDD)/Memory/CPU (Central processing unit)/Mini PCI ExpressCard slot compartment cover ..37

1050 Hard disk drive .....38
1060 DIMM .....40
1070 Fan assembly and Heat Sink assembly .....41
1080 CPU .....44
1090 PCI Express Mini Card for wireless LAN .....45
1100 Keyboard .....47
1110 Keyboard bezel .....49
1120 Power board and touch inductive panel .....52
1130 System board .....53
1140 LCD unit .....56
1150 Speakers, bluetooth daughter card and base cover .....59
1160 LCD front bezel .....64
1170 LCD panel and hinges .....65
1180 Integrated camera .....67
1190 Antenna assembly and LCD cover .....68
Locations .....69
Front view .....69
Right-side view .....70
Bottom and Left-side view .....70
Parts list .....71
Overall .....72
LCD FRUs .....77
Keyboard .....79
Miscellaneous parts .....84
AC adapters .....85
Power cords .....86
Notices .....89
Trademarks .....90

About this manual

This manual contains service and reference information for the following Lenovo product:

Lenovo G470/G475/G570/G575

Use this manual to troubleshoot problems.

The manual is divided into the following sections:

The common sections provide general information, guidelines, and safety information required for servicing computers.

The product-specific section includes service, reference, and product-specific parts information.

Important:

This manual is intended only for trained servicers who are familiar with Lenovo products. Use this manual to troubleshoot problems effectively.

Before servicing a Lenovo product, make sure to read all the information under “Safety information” on page 1 and “Important service information” on page 16.

Safety information

This chapter presents the following safety information that you need to get familiar with before you service a Lenovo G470/G475/G570/G575 computer:

• “General safety” on page 2

• “Electrical safety” on page 3

• "Safety inspection guide" on page 5

• "Handling devices that are sensitive to electrostatic discharge" on page 6

• "Grounding requirements" on page 6

• "Safety notices: multilingual translations" on page 7

• “Laser compliance statement” on page 14

General safety

Follow these rules below to ensure general safety:

• Observe a good housekeeping in the area where the machines are put during and after the maintenance.

• When lifting any heavy object:

1. Make sure that you can stand safely without slipping.

2. Distribute the weight of the object equally between your feet.

3. Use a slow lifting force. Never move suddenly or twist when you attempt to lift it.

4. Lift it by standing or pushing up with your leg muscles; this action could avoid the strain from the muscles in your back. Do not attempt to lift any object that weighs more than 16 kg (35 lb) or that you think is too heavy for you.

Do not perform any action that causes hazards to the customer, or that makes the machine unsafe.

• Before you start the machine, make sure that other service representatives and the customer are not in a hazardous position.

• Place removed covers and other parts in a safe place, keeping them away from all personnel, while you are servicing the machine.

Keep your toolcase away from walk areas so that other people will not trip it over.

Do not wear loose clothing that can be trapped in the moving parts of the machine. Make sure that your sleeves are fastened or rolled up above your elbows. If your hair is long, fasten it.

• Insert the ends of your necktie or scarf inside clothing or fasten it with the nonconductive clip, about 8 centimeters (3 inches) from the end.

• Do not wear jewelry, chains, metal-frame eyeglasses, or metal fasteners for your clothing.

Attention: Metal objects are good electrical conductors.

• Wear safety glasses when you are hammering, drilling, soldering, cutting wire,