Heat Sink Assembly - HP ProBook 450 G2 Maintenance And Service Manual

Heat sink assembly

All heat sink assembly spare part kits include replacement thermal material.
Description
Heat sink assembly for use in HP 450 (Intel) models:
For use in models with UMA graphics
For use in models with discrete graphics and all processors except for the Intel i7-4558U
For use in models with discrete graphics and an Intel i7-4558U processor
Heat sink assembly for use in HP 455 (AMD) models:
For use in models with UMA graphics
For use in models with discrete graphics
Before removing the heat sink assembly, 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. Service doors (see
b. Hard drive (see
c. Optical drive (see
d. WLAN module (see
e. WWAN module (see
f. Keyboard (see
g. Top cover (see
h. System board (see
Remove the heat sink assembly:
1. Position the system board upside-down.
2. Models are available with either UMA or discrete graphics. The heat sink on discrete models includes 2
additional screws. Refer to the following steps that match your model:
Discrete models:
a. To remove the discrete heat sink assembly, in the order indicated on the heat sink, loosen the 6
captive Phillips screws (1) that secure the heat sink to the system board.
92 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
Battery on page 43).
Service door on page
Hard drive on page 46)
Optical drive on page 50)
WLAN/Bluetooth combo card on page
WWAN module on page
Keyboard on page 56)
Top cover on page 64)
System board on page
44).
52)
54)
84)
Spare part number
768048-001
768050-001
768049-001
767435-001
767434-001