Lenovo IdeaCentre C240, Hardware Maintenance 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
Changing booting mode . . . . . . . . . . . 17
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 . . . . 27
General information . . . . . . . . . . . . . 27
Replacing the keyboard and mouse . . . . . . 28
Replacing the optical drive . . . . . . . . . . 28
Replacing the power adapter . . . . . . . . . 30
Removing the rear cover . . . . . . . . . . . 31
Replacing a memory module . . . . . . . . . 32
Replacing the hard disk drive . . . . . . . . . 32
Replacing the heat-sink . . . . . . . . . . . 33
Replacing the system fan . . . . . . . . . . 34
Replacing the Wi-Fi card. . . . . . . . . . . 35
Replacing the speaker system . . . . . . . . 36
Replacing the front indicator board. . . . . . . 37
Replacing the power switch board . . . . . . . 38
Replacing the motherboard. . . . . . . . . . 39
Replacing the computer stand . . . . . . . . 41
Replacing the camera . . . . . . . . . . . . 41
Replacing the converter board . . . . . . . . 42
Replacing the LED panel. . . . . . . . . . . 43
Chapter 9. FRU lists-C240–245 . . . . 47
Chapter 10. FRU lists-C255 . . . . . . 51
Chapter 11. Additional Service
Information . . . . . . . . . . . . . .
57
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