Heat Sink - HP ProBook 4430s Maintenance And Service Manual

Heat sink

All heat sink spare part kits include replacement thermal material.
Description
Heat sink for use in computers with discrete graphics
Heat sink for use in computers with UMA graphics
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
5. Remove the bottom door (see
6. Remove the fan (see
Remove the heat sink:
1. Position the computer upside-down with the front toward you.
2. To remove the discrete heat sink, in the order indicated, loosen the six captive Phillips screws (1)
— (6) that secure the heat sink to the system board.
3. Lift the heat sink up and out of the computer (7).
4. To remove the UMA heat sink, in the order indicated, loosen the four captive Phillips screws (1) —
(4) that secure the heat sink to the system board.
Battery on page 48).
Bottom door on page
Fan on page 67).
50).
Component replacement procedures
Spare part number
646356-001
646357-001
69