Dell Inspiron 15 7557 Service Manual - Page 63

Replacing the heat sink, Procedure, Post-requisites

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Replacing the heat sink WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance. CAUTION: Incorrect alignment of the heat sink can cause damage to the system board and processor. NOTE: The original thermal grease can be reused if the original system board and heat sink are reinstalled together. If either the system board or the heat sink is replaced, use the thermal pad provided in the kit to ensure that thermal conductivity is achieved. Procedure 1 Align the screw holes on the heat sink with the screw holes on the system board. 2 In sequential order (indicated on the heat-sink), tighten the captive screws that secure the heat sink to the system board. Post-requisites 1 Follow the procedure from step 4 to step 8 in "Replacing the system board". 2 Replace the fans. 3 Replace the I/O board. 4 Follow the procedure from step 2 to step 6 in "Replacing the palm rest". 5 Replace the keyboard. 6 Replace the wireless card. 7 Replace the memory modules. 8 Follow the procedure from step 4 to step 6 in "Replacing the hard drive". 9 Replace the battery. 10 Replace the base cover. 63

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Replacing the heat sink
WARNING: Before working inside your computer, read the safety
information that shipped with your computer and follow the steps in
Before working inside your computer
. After working inside your
computer, follow the instructions in
After working inside your
computer
. For more safety best practices, see the Regulatory
Compliance home page at www.dell.com/regulatory_compliance.
CAUTION: Incorrect alignment of the heat sink can cause damage to
the system board and processor.
NOTE:
The original thermal grease can be reused if the original system
board and heat sink are reinstalled together. If either the system board
or the heat sink is replaced, use the thermal pad provided in the kit to
ensure that thermal conductivity is achieved.
Procedure
1
Align the screw holes on the heat sink with the screw holes on the
system board.
2
In sequential order (indicated on the heat-sink), tighten the captive
screws that secure the heat sink to the system board.
Post-requisites
1
Follow the procedure from step 4 to step 8 in “
Replacing the system
board
”.
2
Replace the
fans
.
3
Replace the
I/O board
.
4
Follow the procedure from step 2 to step 6 in “
Replacing the palm rest
”.
5
Replace the
keyboard
.
6
Replace the
wireless card
.
7
Replace the
memory modules
.
8
Follow the procedure from step 4 to step 6 in “
Replacing the hard drive
”.
9
Replace the
battery
.
10
Replace the
base cover
.
63