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System board
NOTE: The system board spare part kit includes replacement thermal material.
Description Spare part number
For use on computer models equipped with a graphics subsystem with discrete memory and the
HD5650 chipset
603939-001
For use on computer models equipped with a graphics subsystem with discrete memory and the
HD5470 chipset
595133-001
For use on computer models equipped with a graphics subsystem with discrete memory and the
HD545V chipset
615906-001
For use on computer models equipped with a graphics subsystem with UMA memory 595135-001
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 43), and then remove the following components:
a.
Hard drive (see
Hard drive on page 44)
b.
Optical drive (see
Optical drive on page 51)
c.
Keyboard (see
Keyboard on page 53)
d.
Top cover (see
Top cover on page 56)
e.
Display assembly (see
Display assembly on page 65)
When replacing the system board, be sure that the following components are removed from the
defective system board and installed on the replacement system board:
●
RTC battery (see
RTC battery on page 47)
●
Memory modules (see
Memory module on page 48)
●
WLAN module (see
WLAN module on page 49)
●
Fan/heat sink assembly (see
Fan/heat sink assembly on page 80)
●
Processor (see
Processor on page 83)
Remove the system board:
1.
Turn the base enclosure upside down, with the front toward you.
76 Chapter 4 Removal and replacement procedures