Table Of Contents - Lenovo Legion Y720T Hardware Maintenance Manual

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 . .
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 . . . . . . . . . . .
Additional Service Information . . . . . . . . .
POST error codes . . . . . . . . . . . . . .
© Copyright Lenovo 2017
Undetermined problems . . . . . . . . . . .
Chapter 7. Locations . . . . . . . . . 23
Identifying internal components . . . . . . . .
Identifying parts on the system board . . . . . .
Chapter 8. Replacing hardware . . . . 27
General information . . . . . . . . . . . . .
Cleaning rear dust screen . . . . . . . . . . .
Replacing the keyboard and mouse . . . . . . .
Removing the computer cover . . . . . . . . .
Removing the computer cover ii . . . . . . . .
Removing the front bezel . . . . . . . . . . .
Cleaning front dust screen
Replacing a memory module. . . . . . . . . .
Replacing a hard disk drive . . . . . . . . . .
Replacing an optical drive . . . . . . . . . . .
Replacing the microprocessor fan assembly
13
Replacing the rear system fan . . . . . . . . .
13
Replacing a front fan . . . . . . . . . . . . .
13
Replacing the Power supply . . . . . . . . . .
15
Replacing the Wi-Fi card . . . . . . . . . . .
16
Removing the top cover
17
Replacing a graphics card. . . . . . . . . . .
Replacing the CPU . . . . . . . . . . . . .
Replacing the motherboard . . . . . . . . . .
FRU lists . . . . . . . . . . . . . . . . .
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Chapter 9. General information . . . . 51
20
Additional Service Information . . . . . . . . .
20
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