HP EliteBook 720 Maintenance and Service Guide - Page 82

Heat sink, Turn the top cover upside down with the front toward you.

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Heat sink NOTE: The heat sink spare part kit includes replacement thermal material. Description Heat sink Spare part number 730556-001 Before removing the heat sink, follow these steps: 1. Turn off 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 the power from the computer by unplugging the power cord from the computer. 3. Disconnect all external devices from the computer. 4. Remove the service cover (see Service cover on page 37), and then remove the following components: a. Battery (see Battery on page 39) b. Hard drive (see Hard drive/solid-state drive on page 41) c. Keyboard (see Keyboard on page 50) d. Top cover (see Top cover on page 57) Remove the heat sink: 1. Turn the top cover upside down with the front toward you. 2. Detach the heat sink shroud (1) from the fan. (The heat sink shroud is attached to the fan with doublesided adhesive.) 3. Following the 1 through 4 sequence stamped into the heat sink, loosen the four Phillips captive screws (2) that secure the heat sink to the system board. 72 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts

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Heat sink
NOTE:
The heat sink spare part kit includes replacement thermal material.
Description
Spare part number
Heat sink
730556-001
Before removing the heat sink, follow these steps:
1.
Turn
off
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 the power from the computer by unplugging the power cord from the computer.
3.
Disconnect all external devices from the computer.
4.
Remove the service cover (see
Service cover
on page
37
), and then remove the following components:
a.
Battery (see
Battery
on page
39
)
b.
Hard drive (see
Hard drive/solid-state drive
on page
41
)
c.
Keyboard (see
Keyboard
on page
50
)
d.
Top cover (see
Top cover
on page
57
)
Remove the heat sink:
1.
Turn the top cover upside down with the front toward you.
2.
Detach the heat sink shroud
(1)
from the fan. (The heat sink shroud is attached to the fan with double-
sided adhesive.)
3.
Following the 1 through 4 sequence stamped into the heat sink, loosen the four Phillips captive screws
(2)
that secure the heat sink to the system board.
72
Chapter 6
Removal and replacement procedures for Authorized Service Provider parts