Compaq A900 Laptop User Manual


 
Heat sink
Description Spare part number
Heat sink (includes replacement thermal material) 462405-001
Before removing the heat sink, 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 34).
5.
Remove the following components:
a.
Hard drive (see
Hard drive on page 37)
b.
Optical drive (see
Optical drive on page 44)
c.
Switch cover and keyboard (see
Switch cover and keyboard on page 46)
d.
Display assembly (see
Display assembly on page 50)
e.
Top cover (see
Top cover on page 55)
f.
Fan (see
Fan on page 58)
g.
System board (see
System board on page 60)
Remove the heat sink:
1.
Turn the system board upside down, with the audio connectors toward you.
2. Loosen the four Phillips PM2.5×6.0 captive screws (1) that secure the heat sink to the system board.
Component replacement procedures 69