User's Manual

3. Disconnect the USB board cable (3) and the power connector board cable (4) from the USB/power
connector board.
4.
Remove the USB/power connector board.
Reverse this procedure to install the USB/power connector board.
System board
Description Spare part number
System board for use in computer models with Intel processors 446475-001 and
453770-001
System board for use only in computer models with AMD processors in full-featured models equipped
with UMA graphics subsystem memory:
449901–001
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 41).
5.
Remove the following components:
a.
Hard drive (see
Hard drive on page 42)
b.
Optical drive (see
Optical drive on page 50)
c.
Switch cover (see
Switch cover on page 52)
d.
Keyboard (see
Keyboard on page 54)
e.
Display assembly (see
Display assembly on page 58)
Component replacement procedures 71