Heat Sink - HP 540 - Notebook PC Maintenance And Service Manual

Heat sink

NOTE: The heat sink spare part kits include replacement thermal material. Replacement thermal
material is also available in the Thermal Material Kit, spare part numbers 456605-001 and 456606-001.
Description
For use only with computer models equipped with UMA graphics subsystem
For use only with computer models equipped with discrete graphics subsystem
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
5. Remove the following components:
a. Hard drive (see
b. Optical drive (see
c. Keyboard (see
d. Switch cover (see
e. Speaker (see
f. Display lid switch module (see
g. Display assembly (see
h. Top cover (see
i. System board (see
Remove the heat sink:
1. Turn the system board upside down, with the USB connectors toward you.
NOTE:
discrete memory. See steps 4 and 5 for removing the heat sink on computer models with graphics
subsystems having UMA memory.
2. Following the 1, 2, 3, 4, 5, 6 sequence stamped into the heat sink, loosen the six Phillips
PM2.5×10.0 screws (1) that secure the heat sink to the system board.
Battery on page
Hard drive on page
Optical drive on page
Switch cover and keyboard on page
Switch cover and keyboard on page
Speaker on page
Display assembly on page
Top cover on page
System board on page
Steps 2 and 3 apply only to computer models equipped with graphics subsystems having
37).
38)
45)
47)
51)
Display lid switch module on page
53)
58)
66)
Component replacement procedures
Spare part number
456605-001
456606-001
47)
52)
71