Lenovo 3493 用户手册

Contents

Important safety information . . . . . . v

Service and upgrades . . . . . . . . . . . . .

Static electricity prevention . . . . . . . . . . .

Power cords and power adapters . . . . . . . . vi
Extension cords and related devices . . . . . . . vi
Plugs and outlets. . . . . . . . . . . . . .

vii

External devices . . . . . . . . . . . . . .

vii

Heat and product ventilation . . . . . . . . .

vii

Operating environment . . . . . . . . . . .

viii

Modem safety information . . . . . . . . . .

viii

Laser compliance statement . . . . . . . . . . ix
Power supply statement . . . . . . . . . . . . ix
Cleaning and maintenance . . . . . . . . . . . ix

Chapter 1. Product overview . . . . . . 1

Features . . . . . . . . . . . . . . . . . .

Specifications . . . . . . . . . . . . . . . .

Lenovo programs

. . . . . . . . . . . . . .

Accessing Lenovo programs on the Windows
7 operating system . . . . . . . . . . . .

Accessing Lenovo programs on the Windows
8 operating system . . . . . . . . . . . .

An introduction to Lenovo programs . . . . .

Locations. . . . . . . . . . . . . . . . . .

Locating connectors, controls, and indicators
on the front of your computer . . . . . . . .

Locating connectors on the rear of your
computer . . . . . . . . . . . . . . .

Locating components . . . . . . . . . .

Locating parts on the system board

. . . .

Locating internal drives . . . . . . . . .

Machine type and model label . . . . . . .

Chapter 2. Using your computer . . .

Frequently asked questions

. . . . . . . . .

Accessing Control Panel on the Windows 8
operating system. . . . . . . . . . . . . .

Using the keyboard . . . . . . . . . . . . .

Using Windows shortcut keys . . . . . . .

Using the blue ThinkVantage button . . . .

Using a fingerprint reader

. . . . . . . .

Using the wheel mouse . . . . . . . . . . .

Adjusting audio . . . . . . . . . . . . . .

About your computer audio . . . . . . . .

Setting the volume from the desktop . . . .

Setting the volume from Control Panel

. . .

Using CDs and DVDs . . . . . . . . . . . .

Handling and storing CD and DVD media . .

Playing a CD or DVD . . . . . . . . . .

Recording a CD or DVD . . . . . . . . .

Chapter 3. You and your computer . .

Accessibility and comfort . . . . . . . . . .

Arranging your workspace . . . . . . . .

Comfort . . . . . . . . . . . . . . .

Glare and lighting . . . . . . . . . . . .

Air circulation . . . . . . . . . . . . .

Electrical outlets and cable lengths . . . . .

Registering your computer . . . . . . . . . .

Moving your computer to another country or
region . . . . . . . . . . . . . . . . . .

Voltage-selection switch . . . . . . . . .

Replacement power cords . . . . . . . .

Chapter 4. Security . . . . . . . . . .

Security features . . . . . . . . . . . . . .

Locking the computer cover . . . . . . . . .

Attaching an integrated cable lock . . . . . . .

Using passwords. . . . . . . . . . . . . .

BIOS passwords . . . . . . . . . . . .

Windows passwords . . . . . . . . . .

Configuring the fingerprint reader . . . . . . .

Using and understanding firewalls . . . . . . .

Protecting data against viruses . . . . . . . .

Chapter 5. Installing or replacing
hardware . . . . . . . . . . . . . . .

Handling static-sensitive devices . . . . . . .

Installing or replacing hardware . . . . . . . .

Installing external options

. . . . . . . .

Removing the computer cover. . . . . . .

Removing and reinstalling the front bezel . .

Accessing the system board components and
drives . . . . . . . . . . . . . . . .

Installing or replacing a PCI card . . . . . .

Installing or replacing a memory module . . .

Replacing the battery . . . . . . . . . .

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

Replacing the optical drive . . . . . . . .

Replacing the power supply assembly

. . .

Replacing the heat sink and fan assembly . .

Replacing the microprocessor . . . . . . .

Replacing the system fan assembly

. . . .

Replacing the front audio and USB
assembly . . . . . . . . . . . . . . .