HP ENVY 15-q400 ENVY Notebook Maintenance and Service Guide - Page 63

Heat sink

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Heat sink NOTE: The heat sink spare part kit includes replacement thermal material. Description Heat sink for use in models with 4th generation Intel processors Heat sink for use in models with 6th generation Intel processors and UMA graphics Heat sink for use in models with 6th generation Intel processors and discrete graphics Spare part number 765737-001 830398-001 830399-001 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 battery (see Battery on page 28), and then remove the following components: a. Service cover (see WLAN module on page 29) b. Hard drive (see Hard drive on page 31) c. Base enclosure (see Base enclosure on page 38) d. Display assembly (see Display assembly on page 41) e. Fan (see Fan on page 50) f. System board (see System board on page 51) Remove the heat sink: 1. Turn the system board upside down, with the front toward you. 2. Following the 1 through 4 sequence stamped into the heat sink, loosen the four Phillips PM2.0×11.0 captive screws (1) that secure the heat sink to the system board. Component replacement procedures 55

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Heat sink
NOTE:
The heat sink spare part kit includes replacement thermal material.
Description
Spare part number
Heat sink for use in models with 4th generation Intel processors
765737-001
Heat sink for use in models with 6th generation Intel processors and UMA graphics
830398-001
Heat sink for use in models with 6th generation Intel processors and discrete graphics
830399-001
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 battery (see
Battery
on page
28
), and then remove the following components:
a.
Service cover (see
WLAN module
on page
29
)
b.
Hard drive (see
Hard drive
on page
31
)
c.
Base enclosure (see
Base enclosure
on page
38
)
d.
Display assembly (see
Display assembly
on page
41
)
e.
Fan (see
Fan
on page
50
)
f.
System board (see
System board
on page
51
)
Remove the heat sink:
1.
Turn the system board upside down, with the front toward you.
2.
Following the 1 through 4 sequence stamped into the heat sink, loosen the four Phillips PM2.0×11.0
captive screws
(1)
that secure the heat sink to the system board.
Component replacement procedures
55