Lenovo H405 - User Manual

Contents
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Contents
Chapter 1. About this manual ................................................ 1
Important Safety Information ......................................................................1
Using eSupport ....................................................................................................2
Important information about replacing RoHS compliant FRUs ..2
Chapter 2. Safety information ................................................ 4
General safety ....................................................................................................... 4
Electrical safety .................................................................................................... 5
Safety inspection guide ...................................................................................7
Handling electrostatic discharge-sensitive devices ......................... 8
Grounding requirements ...............................................................................8
Safety notices ........................................................................................................9
Chapter 3. General information ...........................................12
Specifications ..................................................................................................... 12
Chapter 4. General Checkout ...............................................13
Problem determination tips ...................................................................... 14
Chapter 5. Using the Setup Utility (Type G41) .................16
Starting the Setup Utility program ......................................................... 16
Viewing and changing settings ................................................................ 16
Using passwords .............................................................................................. 17
Using Device ...................................................................................................... 19
Selecting a startup device ........................................................................... 20
Exiting from the Setup Utility program ................................................ 21
Chapter 6. Using the Setup Utility (Type RS760) ............22
Starting the Setup Utility program ......................................................... 22
Viewing and changing settings ................................................................ 22
Using passwords .............................................................................................. 23
Selecting a startup device ........................................................................... 26

Summary

Chapter 1. About this manual

General Safety Information

Crucial safety guidelines before operating or servicing the computer.

Chapter 2. Safety Information

General Safety Practices

Essential rules for safe operation and maintenance practices.

Electrical Safety Precautions

Guidelines for handling electrical components and preventing shocks.

Handling ESD-Sensitive Devices

Important Safety Notices

Chapter 4. General Checkout

Chapter 5. Using the Setup Utility (Type G41)

Chapter 6. Using the Setup Utility (Type RS760)

Chapter 7. Symptom-to-FRU Index

HDD Boot Error Symptoms

Power Supply Troubleshooting

POST Beep Code Interpretation

Explains beep codes and their corresponding hardware failures during POST.

POST Error Message Reference

Lists and describes POST error messages and their potential causes.

Chapter 9. Replacing Hardware

Computer Cover Removal

Step-by-step guide to safely remove the computer's outer casing.

RAM Module Replacement

Procedure for removing and installing RAM modules.

Hard Drive Replacement Procedure

Steps to replace the computer's primary storage device.

CPU Heatsink Assembly Replacement

Guide for replacing the CPU cooling system.

CPU Replacement Process

Detailed steps for removing and installing the central processing unit.

Motherboard Replacement Guide

Comprehensive guide for replacing the main system board.

System Fan Replacement

Power Supply Unit Replacement

Steps to replace the computer's power supply unit.

Post-Replacement Reassembly

Lenovo H405 Specifications

General

Optical Drive	DVD-RW
Operating System	Windows 7 Home Premium
Audio	Integrated HD Audio
USB Ports	6 x USB 2.0
Memory	DDR3
Graphics	AMD Radeon
Ethernet	Gigabit Ethernet
Ports	VGA, HDMI