Dell Inspiron 5490 Service Manual - Page 29

Installing the heat sink (discrete graphics

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Steps 1. In reverse-sequential order (as indicated on the heat sink), loosen the seven captive screws that secure the heat sink to the system board. 2. Lift the heat sink off the system board. Installing the heat sink (discrete graphics) Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. NOTE: If either the system board or the heat sink is replaced, use the thermal pad/paste provided in the kit to ensure that thermal conductivity is achieved. About this task The following image indicates the location of the heat sink (on systems with the discrete graphics option) and provides a visual representation of the installation procedure. Removing and installing components 29

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Steps
1.
In reverse-sequential order (as indicated on the heat sink), loosen the seven captive screws that secure the heat sink to the system
board.
2.
Lift the heat sink off the system board.
Installing the heat sink (discrete graphics)
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
NOTE:
If either the system board or the heat sink is replaced, use the thermal pad/paste provided in the kit to ensure
that thermal conductivity is achieved.
About this task
The following image indicates the location of the heat sink (on systems with the discrete graphics option) and provides a visual
representation of the installation procedure.
Removing and installing components
29