Heat sink
All heat sink spare part kits include replacement thermal material.
Description
Spare part number
Heat sink for use in computers with UMA graphics
646356-001
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
Battery on page 46
).
5.
Remove the bottom door (see
Bottom door on page 48
).
6.
Remove the fan (see
Fan on page 65
).
Remove the heat sink:
1.
Position the computer upside-down with the front toward you.
2.
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.
3.
Lift the heat sink up and out of the computer
(5)
.
NOTE:
For UMA models, thoroughly clean thermal material from the surface of the system board
(1)
and heat sink
(2)
each time you remove the heat sink. All heat sink and processor spare part kits
include thermal material.
Component replacement procedures
67
Summary of Contents for ProBook 4430s
Page 1: ...HP ProBook 4430s Notebook PC HP ProBook 4330s Notebook PC Maintenance and Service Guide ...
Page 4: ...iv Safety warning notice ...
Page 8: ...viii ...
Page 29: ...Computer major components Computer major components 21 ...
Page 83: ...Cable routing path top Cable routing path bottom Component replacement procedures 75 ...
Page 150: ......
