Heat sink
All heat sink spare part kits include replacement thermal material.
Description
Spare part number
Heat sink
646028-001
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 41
).
5.
Remove the following components:
a.
Access door (see
Access door on page 43
).
b.
WLAN module (see
WLAN/Bluetooth combo card on page 49
)
c.
WWAN module (see
WWAN module on page 47
)
d.
Keyboard (see
Keyboard on page 54
)
e.
Top cover (see
Top cover on page 55
)
f.
Modem module (see
Modem module on page 61
)
g.
System board (see
System board on page 63
)
h.
Fan (see
Fan on page 67
)
Remove the heat sink:
1.
Position the system board upside-down.
2.
To remove the heat sink, in the order indicated, loosen the four captive Phillips screws
(1) — (4)
that secure the heat sink to the system board.
Component replacement procedures
69
Содержание ProBook 4230s
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