Heat sink
NOTE:
The fan and heat sink are combined into one assembly. All fan/heat sink spare part kits
contain replacement thermal material.
Description
Spare part number
Heat sink for use in computers with discrete graphics
683860-001
Heat sink for use in computers with UMA graphics
683861-001
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 40
).
5.
Remove the following components:
a.
Bottom door (see
Bottom door on page 42
).
b.
Hard drive (see
Hard drive on page 46
)
c.
Optical drive (see
Optical drive on page 44
)
d.
WLAN module (see
WLAN/Bluetooth combo card on page 52
)
e.
WWAN module (see
WWAN module on page 50
)
f.
Keyboard (see
Keyboard on page 54
)
g.
Top cover (see
Top cover on page 56
)
h.
System board (see
System board on page 71
)
Remove the heat sink:
1.
Position the system board upside-down with the front toward you.
2.
To remove the UMA heat sink, skip to step 6.
3.
To remove the discrete heat sink, disconnect the fan cable
(1)
from the system board.
4.
Loosen the six captive Phillips screws
(2)
that secure the heat sink to the system board.
Component replacement procedures
73
Содержание ProBook 4340s
Страница 1: ...HP ProBook 4340s Notebook PC HP ProBook 4341s Notebook PC Maintenance and Service Guide ...
Страница 4: ...iv Safety warning notice ...
Страница 31: ...Computer major components Computer major components 23 ...
Страница 144: ......
