HP 250 G3, Руководство по техническому обслуживанию и ремонту

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Heat sink assembly
NOTE: The heat sink assembly spare part kit includes replacement thermal materials.
Description Spare part number
Heat sink for use in models with an AMD processor and UMA graphics 753895-001
Heat sink for use in models with an AMD processor and discrete graphics 762728-001
Heat sink for use in models with an Intel processor and UMA graphics
NOTE: i3-3227U processors use 767539-001
759880-001
Heat sink for use in models with an Intel processor and discrete graphics
NOTE: i3-3227U processors use 767538-001
759881-001
Heat sink for use in models with Intel Pentium or Celeron processors and UMA graphics 767537-001
Heat sink for use in models with Intel i3-3217U processors and discrete graphics 767538-001
Heat sink for use in models with Intel i3-3217U processors and UMA graphics 767539-001
NOTE: To properly ventilate the computer, allow at least 7.6 cm (3.0 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 assembly, 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 49 ), and then remove the following components:
●
Keyboard (see Keyboard on page 55 )
● Top cover (see Top cover on page 58 )
●
WLAN module (see WLAN module on page 66 )
● System board (see System board on page 71 )
To remove the heat sink assembly:
1. Position the system board upside down.
2. Loosen the screws on the heat sink (1) that secure the heat sink assembly to the system board.
Component replacement procedures 81