HP 311c-1070EF manual Heat sink assembly, Description Spare part number

Removal and replacement procedures

Heat sink assembly

✎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.

Description	Spare part number
Heat sink assembly (includes replacement thermal material)
For use with the HP Mini and Compaq Mini	580059-001
For use with the HP Pavilion	580058-001

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 4-7).

5.Remove the following components:

a.Accessory compartment cover (see “Keyboard” on page 4-21)

b.Hard drive (see “Hard drive” on page 4-18)

c.Keyboard (see “Keyboard” on page 4-21)

d.Top cover (see “Top cover” on page 4-24)

e.Display assembly (see “Display assembly” on page 4-31)

f.System board (see “System board” on page 4-38)

g.Fan (see “Fan” on page 4-42)

Maintenance and Service Guide 4–43