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6.Attherearofthecomputer,removethethreescrewsthatsecurethepowersupplyassembly.Pressthe

powersupplyclip

1downwardtoreleasethepowersupplyassemblyandthenslidethepowersupply

assemblytothefrontofthecomputer.Liftthepowersupplyassemblyoutofthecomputer.

Figure45.Removingthepowersupplyassembly

66ThinkCentreE93UserGuide

Table of Contents

Default Chapter3
- Table of Contents3
Important Safety Information7
- Service and Upgrades7
- Static Electricity Prevention7
- Extension Cords and Related Devices8
- Power Cords and Power Adapters8
- External Devices9
- Heat and Product Ventilation9
- Plugs and Outlets9
- Modem Safety Information10
- Operating Environment10
- Cleaning and Maintenance11
- Laser Compliance Statement11
- Power Supply Statement11
Chapter 1. Product Overview13
- Features13
- Specifications16
- Lenovo Programs17
- Locations20
Chapter 2. Using Your Computer29
- Frequently Asked Questions29
- Navigating Among Screens on the Windows 8 and Windows 8.1 Operating Systems30
  - Navigating on Windows 830
  - Navigating on Windows 8.131
- Accessing Control Panel on the Windows 8 or Windows 8.1 Operating System32
- Using the Keyboard33
  - Using Windows Shortcut Keys33
  - Using a Fingerprint Reader33
- Using the Wheel Mouse34
- Adjusting Audio34
Chapter 3. You and Your Computer39
- Accessibility and Comfort39
  - Arranging Your Workspace39
- Comfort39
  - Glare and Lighting40
- Air Circulation40
Chapter 4. Security45
- Security Features45
- Using Passwords48
Chapter 5. Installing or Replacing Hardware51
- Handling Static-Sensitive Devices51
- Installing or Replacing Hardware51
- Replacing the Power Supply Assembly76
- Replacing the Microprocessor80
- Replacing the Front Audio and USB Assembly83
- Replacing the System Fan84
- Replacing the Wi-Fi Units86
- Installing or Removing the Rear Wi-Fi Antenna91
- Installing or Removing the Front Wi-Fi Antenna93
- Replacing the Keyboard or Mouse95
- Completing the Parts Replacement96
- Obtaining Device Drivers97
Chapter 6. Recovery Information99
- Recovery Information for the Windows 7 Operating System99
- Recovery Information for the Windows 8 or Windows 8.1 Operating System105
Chapter 7. Using the Setup Utility Program107
- Starting the Setup Utility Program107
- Viewing and Changing Settings107
- Using Passwords107
- Enabling or Disabling a Device109
- Selecting a Startup Device110
  - Selecting a Temporary Startup Device110
  - Selecting or Changing the Startup Device Sequence110
- Enabling Erp LPS Compliance Mode110
- ICE Performance Mode111
- ICE Thermal Alert111
- Smart Performance Choices112
- Exiting the Setup Utility Program112
Chapter 8. Updating System Programs113
- Using System Programs113
- Updating (Flashing) the BIOS from a Disc113
- Updating (Flashing) the BIOS from Your Operating System114
- Recovering from a POST/BIOS Update Failure114
Chapter 9. Preventing Problems115
- Keeping Your Computer Current115
- Cleaning and Maintenance116
- Basics116
  - Cleaning Your Computer117
  - Good Maintenance Practices118
- Moving Your Computer118
Chapter 10. Troubleshooting and Diagnostics119
- Basic Troubleshooting119
- Troubleshooting Procedure120
- Troubleshooting120
- Audio Problems121
- CD Problems122
  - DVD Problems123
  - USB Problems136
- Lenovo Solution Center136
Chapter 11. Getting Information, Help, and Service137
- Information Resources137
- Help and Service138
Appendix A. Notices141
- Trademarks142
Appendix B. Regulatory Information143
- Export Classification Notice143
- Electronic Emissions Notices143
  - Federal Communications Commission Declaration of Conformity143
- Eurasian Compliance Mark145
- Brazil Regulatory Notice145
- Mexico Regulatory Notice145
- Additional Regulatory Information145
Appendix C. WEEE and Recycling Information147
- Important WEEE Information147
- Recycling Information for Japan147
- Recycling Information for Brazil148
- Battery Recycling Information for Taiwan148
- Battery Recycling Information for the European Union148
Appendix D. Restriction of Hazardous Substances Directive (Rohs)151
- European Union Rohs151
- China Rohs151
- Turkish Rohs151
- Ukraine Rohs152
- India Rohs152
Appendix E. China Energy Label153
Appendix F. ENERGY STAR Model Information155
Index157

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