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10.Align the screw holes in the optical drive box with the two screws on the VESA mount bracket and then slide the optical drive box to install it on the VESA mount bracket.

Figure 32. Installing the optical drive box

Chapter 5. Installing or replacing hardware47

11. Install the screw that secures the optical drive box on the VESA mount bracket.

Figure 33. Installing the screw that secures the optical drive box

12.Connect the secondary hard disk drive cable to a USB connector on the computer. See “Locating connectors on the rear of your computer” on page 10.

What to do next:

To work with another piece of hardware, go to the appropriate section.

To complete the installation or replacement, go to “Completing the parts replacement” on page 75.

Replacing the battery

Attention:

Do not open your computer or attempt any repair before reading and understanding the “Important safety information” on page v.

Your computer has a special type of memory that maintains the date, time, and settings for built-infeatures, such asparallel-portassignments (configuration). A battery keeps this information active when you turn off the computer.

The battery normally requires no charging or maintenance throughout its life; however, no battery lasts forever. If the battery fails, the date, time, and configuration information (including passwords) are lost. An error message is displayed when you turn on the computer.

Refer to the “Lithium battery notice” in the Safety, Warranty, and Setup Guide for information about replacing and disposing of the battery.

To replace the battery, do the following:

1.Turn off the computer and disconnect all power cords from electrical outlets.

2.Remove the computer cover. See “Removing the computer cover” on page 33.

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3.Locate the battery. See “Locating parts on the system board” on page 12.

4.Remove the old battery.

Figure 34. Removing the old battery

5. Install a new battery.

Figure 35. Installing a new battery

6.Reinstall the computer cover and connect the cables. See “Completing the parts replacement” on page 75.

Note: When the computer is turned on for the first time after replacing the battery, an error message might be displayed. This is normal after replacing the battery.

7.Turn on the computer and all attached devices.

8.Use the Setup Utility program to set the date, time, and any passwords. See Chapter 7 “Using the Setup Utility program” on page 87.

What to do next:

To work with another piece of hardware, go to the appropriate section.

To complete the installation or replacement, go to “Completing the parts replacement” on page 75.

Replacing the ac power adapter

Attention:

Do not open your computer or attempt any repair before reading and understanding the “Important safety information” on page v.

This section provides instructions on how to replace the ac power adapter.

To replace the ac power adapter, do the following:

1. Turn off the computer and disconnect all power cords from electrical outlets.

Chapter 5. Installing or replacing hardware49

2.Remove the power cord from the ac power adapter cable loop at the rear of the computer and then disconnect the ac power adapter from the ac power adapter connector. See “Locating connectors on the rear of your computer” on page 10.

Figure 36. Disconnecting the ac power adapter

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3.Connect the new ac power adapter to the ac power adapter connector at the rear of your computer and an workable electrical outlet. Secure the power cord into the power adapter cable loop at the rear of the computer as shown.

Figure 37. Connecting the new ac power adapter

What to do next:

To work with another piece of hardware, go to the appropriate section.

To complete the installation or replacement, go to “Completing the parts replacement” on page 75.

Replacing the ac power adapter bracket

Attention:

Do not open your computer or attempt any repair before reading and understanding the “Important safety information” on page v.

This section provides instructions on how to replace the ac power adapter bracket.

Note: The ac power adapter bracket is only available on some models.

To replace the ac power adapter bracket, do the following:

1. Turn off the computer and disconnect all power cords from electrical outlets.

Chapter 5. Installing or replacing hardware51

2.Press the metal tab 1 and then slide the ac power adapter bracket to remove it from the VESA mount bracket.

Figure 38. Removing the ac power adapter bracket

3.To install the ac power adapter bracket to the VESA mount bracket, align the two tabs on the ac power adapter bracket with the slots in the VESA mount bracket, and then slide the ac power adapter bracket to install it on the VESA mount bracket.

Figure 39. Installing the ac power adapter bracket

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What to do next:

To work with another piece of hardware, go to the appropriate section.

To complete the installation or replacement, go to “Completing the parts replacement” on page 75.

Replacing the power switch board

Attention:

Do not open your computer or attempt any repair before reading and understanding the “Important safety information” on page v.

This section provides instructions on how to replace the power switch board.

To replace the power switch board, do the following:

1.Turn off the computer and disconnect all power cords from electrical outlets.

2.Remove the computer cover. See “Removing the computer cover” on page 33.

3.Locate the power switch board. See “Locating components” on page 11.

4.Remove the hard disk drive from the computer. See “Replacing the hard disk drive bracket” on page 60.

5.Disconnect the power switch board cable from the corresponding connector on the system board. See “Locating parts on the system board” on page 12.

6.Remove the power switch board cable from the cable tie in the computer.

7.Remove the screw that secures the power switch board to the computer.

Figure 40. Removing the screw that secures the power switch board

Chapter 5. Installing or replacing hardware53

8. Remove the power switch board from the computer.

Figure 41. Removing the power switch board

9.Align the hole 1 in the new power switch board with the corresponding tab2 on the computer and position the new power switch board in the computer.

Figure 42. Installing the power switch board

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10. Install the screw to secure the new power switch board in the computer.

Figure 43. Installing the screw that secures the power switch board

11.Connect the power switch board cable to the power switch board cable connector on the system board. See “Locating parts on the system board” on page 12.

12.Secure the new power switch board cable into the cable tie in the computer.

13.Install the hard disk drive into the computer. See “Replacing the hard disk drive bracket” on page 60.

What to do next:

To work with another piece of hardware, go to the appropriate section.

To complete the installation or replacement, go to “Completing the parts replacement” on page 75.

Replacing the heat sink

Attention:

Do not open your computer or attempt any repair before reading and understanding the “Important safety information” on page v.

This section provides instructions on how to replace the heat sink.

CAUTION:

The heat sink and fan assembly might be very hot. Turn off the computer and wait three to five minutes to let the computer cool before removing the computer cover.

To replace the heat sink, do the following:

1.Turn off the computer and disconnect all power cords from electrical outlets.

2.Remove the computer cover. See “Removing the computer cover” on page 33.

3.Locate the heat sink on the system board. See “Locating components” on page 11.

Chapter 5. Installing or replacing hardware55

4. Pull the intrusion switch to remove it from the heat sink bracket.

Figure 44. Removing the intrusion switch

5.Follow this sequence to remove the four screws that secure the heat sink and fan assembly to the system board:

a.Partially remove screw 1 , then fully remove screw2 , and then fully remove screw1 .

b.Partially remove screw 3 , then fully remove screw4 , and then fully remove screw3 .

Note: Carefully remove the four screws from the system board to avoid any possible damage to the system board. The four screws cannot be removed from the heat sink and fan assembly.

Figure 45. Removing the heat sink

6.Lift the failing heat sink off the system board.

Notes:

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a.You might have to gently twist the heat sink and fan assembly to free it from the microprocessor.

b.Do not touch the thermal grease while handling the heat sink and fan assembly.

7.Position the new heat sink and fan assembly on the system board so that the four screws are aligned with the holes in the system board.

Figure 46. Installing the heat sink

8.Follow this sequence to install the four screws to secure the new heat sink and fan assembly. Do not over-tightenthe screws.

a.Partially tighten screw 1 , then fully tighten screw2 , and then fully tighten screw1 .

b.Partially tighten screw 3 , then fully tighten screw4 , and then fully tighten screw3 .

9.Attach the intrusion switch to the heat sink bracket.

Figure 47. Installing the intrusion switch

Chapter 5. Installing or replacing hardware57

What to do next:

To work with another piece of hardware, go to the appropriate section.

To complete the installation or replacement, go to “Completing the parts replacement” on page 75.

Replacing the microprocessor

Attention:

Do not open your computer or attempt any repair before reading and understanding the “Important safety information” on page v.

This section provides instructions on how to replace the microprocessor.

CAUTION:

The heat sink and microprocessor might be very hot. Turn off the computer and wait three to five minutes to let the computer cool before removing the computer cover.

To replace the microprocessor, do the following:

1.Turn off the computer and disconnect all power cords from electrical outlets.

2.Remove the computer cover. See “Removing the computer cover” on page 33.

3.Remove the heat sink. See “Replacing the heat sink” on page 55.

Note: Place the heat sink on its side so that the thermal grease on the bottom of it does not get in contact with anything.

4.Lift the small handle 1 and open the retainer2 to access the microprocessor3 .

Figure 48. Accessing the microprocessor

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5. Lift the microprocessor straight up and out of the microprocessor socket.

Figure 49. Removing the microprocessor

Notes:

a.Your microprocessor and socket might look different from the one illustrated.

b.Note the orientation of the microprocessor in the socket. You can either look for the small triangle 1 on one corner of the microprocessor or note the orientation of the notches2 on the microprocessor. This is important when installing the new microprocessor on the system board.

c.Touch only the edges of the microprocessor. Do not touch the gold contacts on the bottom.

d.Do not drop anything onto the microprocessor socket while it is exposed. The socket pins must be kept as clean as possible.

6.Make sure that the small handle is in the raised position and the microprocessor retainer is fully open.

7.Remove the protective cover that protects the gold contacts of the new microprocessor.

8.Hold the new microprocessor by its sides and align the small triangle on one corner of the new microprocessor with the corresponding small triangle on one corner of the microprocessor socket.

Chapter 5. Installing or replacing hardware59

9. Lower the new microprocessor straight down into the microprocessor socket on the system board.

Figure 50. Installing the microprocessor

10.Close the microprocessor retainer and lock it into position with the small handle to secure the new microprocessor in the socket.

11.Reinstall the heat sink. See “Replacing the heat sink” on page 55.

What to do next:

To work with another piece of hardware, go to the appropriate section.

To complete the replacement, go to “Completing the parts replacement” on page 75.

Replacing the hard disk drive bracket

Attention:

Do not open your computer or attempt any repair before reading and understanding the “Important safety information” on page v.

This section provides instructions on how to replace the hard disk drive bracket.

To replace the hard disk drive bracket, do the following:

1.Turn off the computer and disconnect all power cords from electrical outlets.

2.Remove the computer cover. See “Removing the computer cover” on page 33.

3.Locate the hard disk drive. See “Locating components” on page 11.

4.Disconnect the signal cable and the power cable from the hard disk drive.

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5. Remove the two screws 1

that secure the hard disk drive bracket on the system board.

Figure 51. Removing the screws that secure the hard disk drive bracket

Chapter 5. Installing or replacing hardware61

6.Slide the hard disk drive bracket toward the heat sink and then lift the hard disk drive bracket to remove it from the computer.

Figure 52. Removing the hard disk drive bracket

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7.To install the hard disk drive bracket into the computer, position the hard disk drive bracket on the system board so that the two holes in the hard disk drive bracket are aligned with the standoffs on the system board. Slide the hard disk drive bracket as shown until the two screw holes are aligned with the corresponding screw posts on the system board.

Figure 53. Installing the hard disk drive bracket

8. Install the two screws 1 that secure the hard disk drive bracket.

Figure 54. Installing the two screws that secure the hard disk drive bracket

9. Connect the signal cable and the power cable to the hard disk drive.

What to do next:

• To work with another piece of hardware, go to the appropriate section.

Chapter 5. Installing or replacing hardware63

• To complete the installation or replacement, go to “Completing the parts replacement” on page 75.

Replacing the WiFi card module

Attention:

Do not open your computer or attempt any repair before reading and understanding the “Important safety information” on page v.

This section provides instructions on how to replace the WiFi card module.

Note: The WiFi card module is only available in some models.

To replace the WiFi card module, do the following:

1.Turn off the computer and disconnect all power cords from electrical outlets.

2.Remove the computer cover. See “Removing the computer cover” on page 33.

3.Remove the hard disk drive bracket. See “Replacing the hard disk drive bracket” on page 60.

4.Locate the WiFi card module on the system board. See “Locating components” on page 11.

5.Disconnect the WiFi antenna cable from the WiFi card module and remove the two screws that secure the WiFi card module to the system board.

Figure 55. Removing the WiFi card module cable and screws

Note: Depending on your computer model, the WiFi card module that comes with your computer might have two cables.

Figure 56. Removing the WiFi card module cables and screws

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6. Pull the WiFi card module to remove it out of the mini PCI Express slot.

Figure 57. Removing the WiFi card module

7.Insert the new WiFi card module into the mini PCI Express slot. Pivot the WiFi card module downward and then install the two screws to secure the WiFi card module. Connect the WiFi antenna cable to the WiFi card module.

Figure 58. Installing the WiFi card module

Note: Depending on your computer model, the WiFi card module that comes with your computer might have two cables.

Figure 59. Installing the WiFi card module

8. Install the hard disk drive bracket. See “Replacing the hard disk drive bracket” on page 60.

Chapter 5. Installing or replacing hardware65

What to do next:

To work with another piece of hardware, go to the appropriate section.

To complete the installation or replacement, go to “Completing the parts replacement” on page 75.

Installing or removing the rear WiFi antenna

Attention:

Do not open your computer or attempt any repair before reading and understanding the “Important safety information” on page v.

This section provides instructions on how to install or remove the rear WiFi antenna.

Notes:

The rear antenna is only available on some models.

Depending on your computer model, the WiFi card module that comes with your computer might work with one or two rear antennas. For more information about two rear antennas, see “Installing or removing two rear WiFi antennas” on page 67.

Installing the rear WiFi antenna

To install the rear WiFi antenna, do the following:

1.Turn off the computer and disconnect all power cords from electrical outlets.

2.Install the rear WiFi antenna to the rear WiFi antenna cable connector attached on the rear of the computer.

3.Adjust the angle of the rear antenna to lower the risk of breaking the antenna by accident.

Figure 60. Installing the rear WiFi antenna

What to do next:

To work with another piece of hardware, go to the appropriate section.

To complete the installation or replacement, go to “Completing the parts replacement” on page 75.

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