HP (Hewlett-Packard) C9J12UT#ABA ユーザーズマニュアル

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Heat sink
NOTE:
The heat sink spare part kit includes replacement thermal material.
Description
Spare part number
For use only on computer models equipped with a graphics subsystem with discrete memory
686021-001
For use only on computer models equipped with a graphics subsystem with UMA memory
693371-001
Before removing the heat sink, follow these steps:
1.
Turn off 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 the power from the computer by unplugging the power cord from the computer.
3.
Disconnect all external devices from the computer.
4.
Remove the battery (see 
), and then remove the following components:
a.
Service cover (see 
)
b.
Hard drive (see 
c.
Optical drive (see 
d.
WLAN module (see 
e.
WWAN module (see 
)
f.
Fan (see 
g.
Keyboard (see 
h.
Base enclosure (see 
)
i.
System board (see 
Remove the heat sink:
NOTE:
Steps 1 and 2 apply to computer models equipped with a graphics subsystem with discrete
memory. See steps 3 and 4 for heat sink removal information for computer models equipped with a
graphics subsystem with UMA memory.
1.
Following the 1, 2, 3, 4, 5, 6 sequence stamped into the heat sink, loosen the six captive Philllips
screws (1) and (2) that secure the heat sink to the system board.
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Chapter 4   Removal and replacement procedures