Latitude 3420 Service Manual for computers with discrete graphics

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Installing the heatsink assembly

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following image indicates the location of the heatsink assembly and provides a visual representation of the installation procedure.

Image: Removing the screws that secure the base cover to the palm-rest and keyboard assembly

Steps

Align and place the heatsink assembly into the slot on the system board.
Tighten the seven captive screws (in order, 1>2>3>4->5->6->7) to secure the heatsink assembly to the system board.

Next steps

Install the base cover.
Exit the service mode
Install the SIM card tray for systems enabled with 4G LTE.
Install the microSD-card.
Follow the procedure in after working inside your computer.