HP ProBook 5330m HP ProBook 5330m Notebook PC - Maintenance and Service Guide - Page 76

Heat sink, Loosen the four captive screws

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Heat sink Description Heat sink (includes replacement thermal material) Spare part number 650372-001 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 36). 5. Remove the service access cover (see Service access cover on page 38). 6. Remove the keyboard (see Keyboard on page 50). 7. Remove the fan (see Fan on page 53). 8. Remove the top cover (see Top cover on page 55). 9. Remove the speakers (see Speakers on page 65). 10. Remove the system board (see System board on page 66). Remove the heat sink: 1. Position the system board upside down on a flat surface. 2. Loosen the four captive screws (1) that secure the heat sink to the system board. 3. Lift the heat sink straight up (2) and remove it from the system board. NOTE: The thermal material must be thoroughly cleaned from the surfaces of the heat sink components (1) and (2), and the system board components (3) and (4), each time the heat sink is removed. Replacement thermal material is included with all heat sink and system board spare part kits. 68 Chapter 4 Removal and replacement procedures

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Heat sink
Description
Spare part number
Heat sink
(includes replacement thermal material)
650372-001
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
36
).
5.
Remove the service access cover (see
Service access cover
on page
38
).
6.
Remove the keyboard (see
Keyboard
on page
50
).
7.
Remove the fan (see
Fan
on page
53
).
8.
Remove the top cover (see
Top cover
on page
55
).
9.
Remove the speakers (see
Speakers
on page
65
).
10.
Remove the system board (see
System board
on page
66
).
Remove the heat sink:
1.
Position the system board upside down on a flat surface.
2.
Loosen the four captive screws
(1)
that secure the heat sink to the system board.
3.
Lift the heat sink straight up
(2)
and remove it from the system board.
NOTE:
The thermal material must be thoroughly cleaned from the surfaces of the heat sink
components
(1)
and
(2)
, and the system board components
(3)
and
(4)
, each time the heat sink is
removed. Replacement thermal material is included with all heat sink and system board spare part
kits.
68
Chapter 4
Removal and replacement procedures