Dell Latitude 7420 Service Manual page 48

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CAUTION:

Remove the heatsink assembly before removing the system board as there are two (M2x3) screws

underneath the heatsink that secures the system board to the computer.

NOTE:

For configurations shipped with a carbon fiber palmrest and without WWAN antennas, the dummy SIM card tray

must removed from the system before removing the system board.

To remove the dummy SIM card tray, push the release latch inwards and then slide dummy card tray out of the computer.

NOTE:

For non-WWAN configurations, remove the WWAN card shield and WWAN card bracket before removing the

system board.

About this task

The following images indicate the location of the system board and provide a visual representation of the removal procedure.

Removing and installing components

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Latitude 7420 2-in-1 P135g P136g