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8.Installthescrewtosecurethecoverpresenceswitchtothechassis.

Figure58.Installingthenewcoverpresenceswitch

9.Reconnectthecoverpresenceswitchcabletothesystemboard.See“Locatingpartsonthesystem

board”onpage11

10.Reinstallthefrontbezel.See“Removingandreinstallingthefrontbezel”onpage32.

Whattodonext:

•Toworkwithanotherpieceofhardware,gototheappropriatesection.

•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage87.

Replacingtheinternalspeaker

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”

onpagev

Thissectionprovidesinstructionsonhowtoreplacetheinternalspeaker.

Note:Theinternalspeakerisonlyavailableinsomemodels.

Toreplacetheinternalspeaker,dothefollowing:

72ThinkCentreUserGuide

Default Chapter1
- User Guide1
- 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
- Software Overview17
- Locations19
Chapter 2. Using Your Computer29
- Frequently Asked Questions29
- Using the Keyboard29
- Using the Wheel Mouse30
- Adjusting Audio30
- Using Cds and Dvds31
Chapter 3. You and Your Computer35
- Accessibility and Comfort35
- Registering Your Computer37
- Moving Your Computer to Another Country or Region37
  - Voltage-Selection Switch37
  - Replacement Power Cords38
Chapter 4. Security39
- Security Features39
- Attaching an Integrated Cable Lock40
- Using Passwords40
  - BIOS Passwords40
  - Windows Passwords41
- Configuring the Fingerprint Reader41
- Using and Understanding Firewalls41
- Protecting Data against Viruses41
Chapter 5. Installing or Replacing Hardware43
- Handling Static-Sensitive Devices43
- Installing or Replacing Hardware43
Chapter 6. Recovery Information101
- Creating and Using Recovery Media101
  - Creating Recovery Media101
  - Using Recovery Media102
- Performing Backup and Recovery Operations102
  - Performing a Backup Operation102
  - Performing a Recovery Operation103
- Using the Rescue and Recovery Workspace103
- Creating and Using a Rescue Medium104
  - Creating a Rescue Medium104
  - Using a Rescue Medium104
- Reinstalling Preinstalled Applications and Device Drivers105
- Reinstalling Software Programs106
- Reinstalling Device Drivers106
- Solving Recovery Problems106
Chapter 7. Using the Setup Utility Program109
- Starting the Setup Utility Program109
- Viewing and Changing Settings109
- Using Passwords109
- Selecting a Startup Device112
  - Selecting a Temporary Startup Device112
  - Selecting or Changing the Startup Device Sequence112
- Enabling Erp Compliance Mode112
- ICE Performance Mode113
- ICE Thermal Alert113
- Exiting the Setup Utility Program114
Chapter 8. Updating System Programs115
- Using System Programs115
- Updating (Flashing) the BIOS from a Disc115
- Updating (Flashing) the BIOS from Your Operating System116
- Recovering from a POST/BIOS Update Failure116
Chapter 9. Preventing Problems117
- Keeping Your Computer Current117
- Cleaning and Maintenance118
- Moving Your Computer120
Chapter 10. Troubleshooting and Diagnostics121
- Basic Troubleshooting121
- Troubleshooting Procedure122
- Troubleshooting122
- Lenovo Solution Center137
Chapter 11. Getting Information, Help, and Service139
- Information Resources139
- Help and Service140
Appendix A. Notices143
- Trademarks144
Appendix B. Regulatory Information145
- Export Classification Notice145
- Electronic Emissions Notices145
  - Federal Communications Commission Declaration of Conformity145
- Additional Regulatory Information147
Appendix C. WEEE and Recycling Information149
- Important WEEE Information149
- Recycling Information149
- Recycling Information for Brazil150
- Battery Recycling Information for Taiwan150
- Battery Recycling Information for the European Union151
Appendix D. Restriction of Hazardous Substances Directive (Rohs)153
- China Rohs153
- Turkish Rohs153
- Ukraine Rohs153
- India Rohs154
Appendix E. Ek Bilgiler155
Appendix F. Servis Istasyonlari157
Index165

Brand	Lenovo
Model	IdeaCentre H520g
Category	Desktop
Language	English

Lenovo IdeaCentre H520g User Manual

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