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4–36 Maintenance and Service Guide
Removal and replacement procedures
System board
✎
The system board spare part kit includes replacement thermal material.
Before removing the system board, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on,
and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then
unplugging the AC adapter from the computer.
4. Remove the battery (see “Battery” on page 4-7).
5. Remove the following components:
a. Wireless module compartment cover (see “WLAN module” on page 4-8).
b. Hard drive (see “Hard drive” on page 4-10).
c. Optical drive (see “Optical drive” on page 4-15).
d. Keyboard (see “Keyboard” on page 4-16).
e. Keyboard cover (see “Keyboard cover” on page 4-18).
f. Display assembly (see “Display assembly” on page 4-21).
g. Top cover (see “Top cover” on page 4-29).
When replacing the system board, be sure that the following additional components are removed from the defective
system board and installed on the replacement system board:
■ Fan/heat sink assembly (see “Fan/heat sink assembly” on page 4-39)
■ Processor (see “Processor” on page 4-42)
Description Spare part number
With media card and HDMI support, for use with UMA systems 577065-001
With support for media cards but not HDMI, for use with UMA systems 577064-001
With no media card or HDMI support, for use with UMA systems 585923-001
With media card and HDMI support, for use with discrete systems 577067-001
With support for media cards but not HDMI, for use with discrete systems 577066-001