Fan/Graphics Board Heat Sink Assembly - HP EliteBook 8770w Maintenance And Service Manual

10. Release the pointing stick ZIF connector (3) and lift the cable (4) to release it.
Reverse this procedure to install the keyboard.

Fan/graphics board heat sink assembly

NOTE: The fan/graphics board heat sink assemblies include replacement thermal material.
Description
For use only with computer models equipped with AMD graphics subsystems
For use only with computer models equipped with NVIDIA graphics subsystems
NOTE: To properly ventilate the computer, allow at least a 7.6-cm (3-inch) 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 graphics board 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 51).
Spare part number
688733-001
696435-001
Component replacement procedures 75