HP ENVY 14-u000 ENVY 14 Notebook PC Maintenance and Service Guide - Page 70

Heat sink assembly, Turn the system board upside down, with the front toward you.

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Heat sink assembly Description Heat sink for use only on computer models equipped with Intel processors and UMA graphics 19 W Heat sink for use only on computer models equipped with Intel processors and switchable discrete graphics 19 W Spare part number 763701-001 763703-001 Before removing the heat sink assembly, 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 31), and then remove the following components: a. Optical drive (see Optical drive on page 32) b. Top cover (see Top cover on page 39) c. Power connector cable (see Power connector cable on page 63) d. System board (see System board on page 52) e. Fan (see Fan on page 58) Remove the heat sink assembly: 1. Turn the system board upside down, with the front toward you. NOTE: Steps 2 through 4 apply to computer models equipped with switchable discrete graphics. See steps 5 through 7 for heat sink assembly removal information for computer models equipped with UMA graphics. 2. Remove the four Phillips M2.5x4.0 screws (1) and the three Phillips PM2.5x4.0 screws (2) that secure the heat sink assembly to the system board. 60 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts

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Heat sink assembly
Description
Spare part number
Heat sink for use only on computer models equipped with Intel processors and UMA graphics 19 W
763701-001
Heat sink for use only on computer models equipped with Intel processors and switchable
discrete graphics 19 W
763703-001
Before removing the heat sink assembly, 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
31
), and then remove the following components:
a.
Optical drive (see
Optical drive
on page
32
)
b.
Top cover (see
Top cover
on page
39
)
c.
Power connector cable (see
Power connector cable
on page
63
)
d.
System board (see
System board
on page
52
)
e.
Fan (see
Fan
on page
58
)
Remove the heat sink assembly:
1.
Turn the system board upside down, with the front toward you.
NOTE:
Steps 2 through 4 apply to computer models equipped with switchable discrete graphics. See
steps 5 through 7 for heat sink assembly removal information for computer models equipped with UMA
graphics.
2.
Remove the four Phillips M2.5x4.0 screws
(1)
and the three Phillips PM2.5x4.0 screws
(2)
that secure
the heat sink assembly to the system board.
60
Chapter 6
Removal and replacement procedures for Authorized Service Provider parts