Lenovo A720 Lenovo IdeaCentre A720 Hardware Maintenance Manual (English) - Page 5

Contents, Using the Setup Utility.. - manual

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Contents Chapter 1. About this manual 1 Important Safety Information 1 Chapter 2. Safety information 3 General safety 3 Electrical safety 3 Safety inspection guide 5 Handling electrostatic discharge-sensitive devices 5 Grounding requirements 6 Safety notices 6 Chapter 3. General information . . . . . 9 Specifications 9 Chapter 4. General Checkout . . . . . 11 Chapter 5. Using the Setup Utility. . . 13 Starting the Lenovo BIOS Setup Utility program . 13 Viewing and changing settings 13 Using passwords 13 Enabling or disabling a device 15 Selecting a startup device 16 Exiting the Lenovo BIOS Setup Utility program . . 17 Chapter 6. Symptom-to-FRU Index . . 19 Hard disk drive boot error 19 Power Supply Problems 19 POST error codes 20 Undetermined problems 20 Chapter 7. Locating connectors, controls and components 21 Chapter 8. Replacing hardware . . . . 29 General information 29 Replacing the keyboard and mouse 30 Replacing the power cord or power adapter . . . 30 Removing the base cover 31 Replacing the hard disk drive 32 Replacing a memory module 34 Replacing the system fan 34 Replacing the heat-sink 35 Replacing the CPU 36 Replacing the optical drive 38 Replacing the solid state disk 40 Replacing the optical drive eject board . . . . . 40 Replacing the motherboard 41 Replacing the speaker system 43 Replacing the TV tuner card 45 Replacing the battery 46 Removing the hinge from the chassis 47 Removing the rear cover 49 Replacing the scalar board 50 Replacing the touch control board 52 Replacing the converter board 53 Replacing the power switch board 54 Replacing the Bluetooth module 55 Replacing the WLAN card 56 Replacing the camera 57 Replacing the front function board 58 Replacing the LED panel 59 FRU lists 61 Chapter 9. General information . . . . 69 Additional Service Information 69 © Copyright Lenovo 2012 iii

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Contents
Chapter 1. About this manual
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1
Important Safety Information
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Chapter 2. Safety information
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General safety
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Electrical safety
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Safety inspection guide
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Handling electrostatic discharge-sensitive
devices
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Grounding requirements
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Safety notices
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Chapter 3. General information
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Specifications
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Chapter 4. General Checkout
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Chapter 5. Using the Setup Utility. . .
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Starting the Lenovo BIOS Setup Utility program
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Viewing and changing settings
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Using passwords
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Enabling or disabling a device
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Selecting a startup device
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Exiting the Lenovo BIOS Setup Utility program .
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Chapter 6. Symptom-to-FRU Index . .
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Hard disk drive boot error
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Power Supply Problems
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POST error codes
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Undetermined problems
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Chapter 7. Locating connectors,
controls and components
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Chapter 8. Replacing hardware
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General information
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Replacing the keyboard and mouse
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Replacing the power cord or power adapter .
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Removing the base cover
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Replacing the hard disk drive
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Replacing a memory module
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Replacing the system fan
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Replacing the heat-sink
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Replacing the CPU
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Replacing the optical drive
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Replacing the solid state disk
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Replacing the optical drive eject board
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Replacing the motherboard
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Replacing the speaker system
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Replacing the TV tuner card
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Replacing the battery
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46
Removing the hinge from the chassis
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47
Removing the rear cover
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49
Replacing the scalar board
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50
Replacing the touch control board
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52
Replacing the converter board
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53
Replacing the power switch board
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Replacing the Bluetooth module
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55
Replacing the WLAN card
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56
Replacing the camera
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Replacing the front function board
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58
Replacing the LED panel
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FRU lists
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Chapter 9. General information
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69
Additional Service Information
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69
© Copyright Lenovo 2012
iii