Table Of Contents - Lenovo IdeaCentre A720 Hardware Maintenance Manual

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