HP ENVY 15-k300 Maintenance and Service Guide - Page 85

Heat sink

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Heat sink Description For use only on computer models with UMA memory 19 W for use with HP ENVY 17 Notebook PC computer models For use only on computer models with UMA memory 47 W for use with HP ENVY 15 Notebook PC computer models and for use with HP ENVY 17 Notebook PC computer models For use only on computer models with discrete memory 19 W for use with HP ENVY 17 Notebook PC computer models For use only on computer models with discrete memory 35 W for use with HP ENVY 17 Notebook PC computer models Spare part number 763701-001 763702-001 763703-001 763704-001 NOTE: To properly ventilate the computer, allow at least 7.6 cm (3 in) of clearance on the left side of the computer. The computer uses an electric fan for ventilation. The fan is controlled by a temperature sensor and is designed to turn on automatically when high temperature conditions exist. These conditions are affected by high external temperatures, system power consumption, power management/battery conservation configurations, battery fast charging, and software requirements. Exhaust air is displaced through the ventilation grill located on the left side of the computer. 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 37), 5. Remove the optical drive (see Optical drive on page 38). 6. Remove the top cover from the base enclosure (see Base enclosure on page 41). 7. Remove the WLAN module (see WLAN module on page 55). 8. Remove the subwoofer (see Subwoofer on page 60). 9. Remove the system board (see System board on page 63). 10. Remove the fan (see Fan on page 74). Remove the heat sink: ▲ Loosen the seven captive screws in the order listed on the heat sink (1), and then remove the heat sink (2). NOTE: The heat sink may vary by computer model and may have a different number of screws. The heat sink is marked with the order the screws should be removed in. Follow the order shown. Component replacement procedures 75

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Heat sink
Description
Spare part number
For use only on computer models with UMA memory 19 W for use with HP ENVY 17 Notebook PC
computer models
763701-001
For use only on computer models with UMA memory 47 W for use with HP ENVY 15 Notebook PC
computer models and for use with HP ENVY 17 Notebook PC computer models
763702-001
For use only on computer models with discrete memory 19 W for use with HP ENVY 17 Notebook PC
computer models
763703-001
For use only on computer models with discrete memory 35 W for use with HP ENVY 17 Notebook PC
computer models
763704-001
NOTE:
To properly ventilate the computer, allow at least 7.6 cm (3 in) of clearance on the left side of
the computer. The computer uses an electric fan for ventilation. The fan is controlled by a temperature
sensor and is designed to turn on automatically when high temperature conditions exist. These conditions
are affected by high external temperatures, system power consumption, power management/battery
conservation configurations, battery fast charging, and software requirements. Exhaust air is displaced
through the ventilation grill located on the left side of the computer.
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
37
),
5.
Remove the optical drive (see
Optical drive
on page
38
).
6.
Remove the top cover from the base enclosure (see
Base enclosure
on page
41
).
7.
Remove the WLAN module (see
WLAN module
on page
55
).
8.
Remove the subwoofer (see
Subwoofer
on page
60
).
9.
Remove the system board (see
System board
on page
63
).
10.
Remove the fan (see
Fan
on page
74
).
Remove the heat sink:
▲
Loosen the seven captive screws in the order listed on the heat sink
(1)
, and then remove the heat sink
(2)
.
NOTE:
The heat sink may vary by computer model and may have a different number of screws. The
heat sink is marked with the order the screws should be removed in. Follow the order shown.
Component replacement procedures
75