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0A94223
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3120
3122
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Troubleshooting
Specs
Install
Password
Warranty
Solving recovery problems
Diagnostic programs
Accessing the microprocessor
Connector Description
Replacing the battery
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Part Number: 0A94223
Printed in USA
(1P) P/N: 0A94223
*0A94223*
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Contents
ThinkCentre User Guide
Second Edition December Copyright Lenovo
Contents
Index
Important safety information
Iv ThinkCentre User Guide
Features
Product overview
Connectivity
Preinstalled operating system
Software overview
Specifications
Software provided with your Windows operating system
Lenovo ThinkVantage Tools
Lenovo Solution Center
Locations
Locating connectors and parts on the rear of your computer
Front connector, control, and indicator locations
Connector Description
If you use speech-recognition software
Locating components
Locating parts on the system board
Locating internal drives
System board part locations
Drive bay locations
Installing or replacing hardware
Installing or replacing hardware
Handling static-sensitive devices
Installing external options
Opening the computer cover
Removing and reinstalling the front bezel
Removing the front bezel
Accessing the system board components and drives
What to do next
Installing or replacing a memory module
Removing a memory module
Installing or replacing a PCI card
Opening the retaining clips
Removing a PCI card
Installing the PCI card
Installing or replacing the card reader
Installing the card reader
Installing the card reader
Installing the screw that secures the card reader
Replacing the card reader
Installing the card reader
Replacing the battery
Removing the old battery
Replacing the hard disk drive
Removing the hard disk drive
Removing the hard disk drive from the bracket
Installing the hard disk drive
Replacing the optical drive
Pivoting the optical drive bay
Removing the old optical drive
Replacing the heat sink and fan assembly
Installing a new optical drive
Screws that secure the heat sink and fan assembly
Removing the heat sink fan duct
Replacing the power supply assembly
Installing the heat sink fan duct
Installing or replacing hardware
Removing the heat sink fan duct
Power connectors on the system board
Installing the power supply assembly
Replacing the microprocessor
Accessing the microprocessor
Installing or replacing hardware
Replacing the internal speaker
Removing the front bezel
Removing the cover presence switch
Removing the internal speaker
Installing the new internal speaker
Replacing the front audio and USB assembly
Reinstalling the cover presence switch
Removing the front audio and USB assembly
Replacing the keyboard
Replacing the mouse
Completing the parts replacement
Mouse connectors
Password protection
Obtaining device drivers Basic security features
Integrated cable lock
Erasing a lost or forgotten password clearing Cmos
Creating and using recovery media
Recovery information
Creating recovery media
Performing backup and recovery operations
Using recovery media
Performing a backup operation
Performing a recovery operation
Using the Rescue and Recovery workspace
Using a rescue medium
Creating and using a rescue medium
Creating a rescue medium
Installing or reinstalling device drivers
Solving recovery problems
ThinkCentre User Guide
Viewing or changing settings
Using the Setup Utility program
Starting the Setup Utility program
Using passwords
Administrator password
Password considerations
Power-on password
Setting, changing, or deleting a password
Selecting a temporary startup device
Selecting a startup device
Viewing or changing the startup device sequence
Exiting the Setup Utility program
Updating flashing the Bios from a disc
Using system programs
Updating system programs
Updating flashing the Bios from your operating system
Recovering from a Post and Bios update failure
Updating system programs
ThinkCentre User Guide
Troubleshooting and diagnostic programs
Basic troubleshooting
Diagnostic programs
Lenovo Solution Center
Lenovo ThinkVantage Toolbox
PC-Doctor for DOS
Optical mouse
Cleaning the mouse
Non-optical mouse
Troubleshooting and diagnostic programs
ThinkCentre User Guide
Online Books folder
Getting information, help, and service
Information resources
Lenovo ThinkVantage Tools
Lenovo Welcome
Access Help
Safety and warranty
Lenovo Support Web site
Using the documentation and diagnostic programs
Help and service
Calling for service
Using other services
Purchasing additional services
Appendix A. Notices
Television output notice
Trademarks
ThinkCentre User Guide
Index
CRU
Installing options Memory module PCI card Security features
Set Power-On Password
ThinkCentre User Guide
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