HP 511885-031 User Manual

The fan/heat sink assembly spare kit includes replacement thermal material.

For use only with computer models equipped with graphics subsystems with discrete memory

512837-001

For use only with computer models equipped with graphics subsystems with UMA memory

512830-001

For use only with computer models equipped with ATI Mobility Radeon HD4650 graphics
subsystems

518435–001

To properly ventilate the computer, allow at least a 7.6-cm (3-in) clearance on the right side

and rear panel 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 fan/heat sink assembly, follow these steps:

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.

Disconnect all external devices connected to the computer.

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.

Remove the battery (see 

Remove the following components:

Hard drive (see 

Optical drive (see 

).

Switch cover and keyboard (see 

Display assembly (see 

).

Top cover (see 

USB board (see 

System board (see 

Remove the fan/heat sink assembly:

Turn the system board upside down, with the expansion port 3 and external monitor port toward
you.

Disconnect the fan cable (1) from the system board.

Loosen the three Phillips PM2.5×14.0 spring-loaded, captive screws (2), (3), and (4) that secure
the fan/heat sink assembly to the system board.

Component replacement procedures 105