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Dell Latitude 5490 Fan Replacement

Introduction

The fan prevents overheating by maintaining consistent airflow throughout your laptop.

In this guide, you will learn how to replace and install a fan into your Dell Latitude 5490 laptop.

The fan circulates air. This is critical because your laptop can slow down or potentially shut down due to overheating. Replacing a damaged fan will allow your laptop to function without faltering. An operational fan protects your laptop against heat related damage and can extend its lifetime.

What you need

  1. Dell Latitude 5490 Fan Replacement, Removing Back Panel and Disconnecting Battery: step 1, image 1 of 3 Dell Latitude 5490 Fan Replacement, Removing Back Panel and Disconnecting Battery: step 1, image 2 of 3 Dell Latitude 5490 Fan Replacement, Removing Back Panel and Disconnecting Battery: step 1, image 3 of 3

    • Power off the laptop before beginning the disassembly process.

    • Close the device and flip the laptop over so the backplate is facing up.

    Edit

  2. Dell Latitude 5490 Fan Replacement: step 2, image 1 of 2 Dell Latitude 5490 Fan Replacement: step 2, image 2 of 2

    • Using a Phillips #0 Screwdriver, loosen all eight captive screws in the backplate.

    • You do not need to fully remove the screws. Instead, unscrew them until you can easily jostle the screws.

    Edit

  3. Dell Latitude 5490 Fan Replacement: step 3, image 1 of 2 Dell Latitude 5490 Fan Replacement: step 3, image 2 of 2

    • Using the spudger, pry the backplate from the laptop starting from external chassis (the back side of the laptop).

    • Continue prying in a clockwise direction around the backplate until it is able to be removed with just your hands.

    • Remove the backplate and put it aside for reassembly.

    Edit

  4. Dell Latitude 5490 Fan Replacement: step 4, image 1 of 2 Dell Latitude 5490 Fan Replacement: step 4, image 2 of 2

    • Using your finger, remove the battery connector using the handle found on top.

    • You do not need to remove the connector completely from the laptop. Doing so may result in damage to your computer. Instead, pull the handle so the connector is suspended above the pins.

    Edit

  5. Dell Latitude 5490 Fan Replacement: step 5, image 1 of 1

    • Hold down the power button for 15 seconds to discharge the remaining electricity within the laptop.

    Edit

  6. Dell Latitude 5490 Fan Replacement, Battery: step 6, image 1 of 3 Dell Latitude 5490 Fan Replacement, Battery: step 6, image 2 of 3 Dell Latitude 5490 Fan Replacement, Battery: step 6, image 3 of 3

    • Carefully unroute the cable connecting the battery to the laptop.

    Edit

  7. Dell Latitude 5490 Fan Replacement: step 7, image 1 of 1

    • Remove the single marked 4 mm screw from the righthand side of the battery using a Phillips #0 screwdriver.

    Edit

  8. Dell Latitude 5490 Fan Replacement: step 8, image 1 of 3 Dell Latitude 5490 Fan Replacement: step 8, image 2 of 3 Dell Latitude 5490 Fan Replacement: step 8, image 3 of 3

    • Gently lift the battery out of the laptop.

    Edit

  10. Dell Latitude 5490 Fan Replacement, SSD (Solid State Drive): step 9, image 1 of 2 Dell Latitude 5490 Fan Replacement, SSD (Solid State Drive): step 9, image 2 of 2

    • Remove the single 4 mm screw connecting the back of the SSD to the laptop using a Phillips #0 screwdriver.

    • When the screw is removed, the SSD will be angled with an incline to one side.

    Edit

  11. Dell Latitude 5490 Fan Replacement: step 10, image 1 of 2 Dell Latitude 5490 Fan Replacement: step 10, image 2 of 2

    • Carefully slide the SSD straight out from the rear side, from the end where the screw was previously secured.

    • The SSD should come out easily with no tension.

    Edit

  12. Dell Latitude 5490 Fan Replacement, WWAN (Cellular Card): step 11, image 1 of 1

    • Remove the 4 mm screw holding the bracket above the WWAN card with a Phillips #0 screwdriver.

    • Be careful with the antenna connectors located under the bracket. They are fragile. If damaged, you will not be able to access mobile data.

    Edit

  13. Dell Latitude 5490 Fan Replacement: step 12, image 1 of 3 Dell Latitude 5490 Fan Replacement: step 12, image 2 of 3 Dell Latitude 5490 Fan Replacement: step 12, image 3 of 3

    • Carefully remove both antenna connectors. Ensure that you pull the antenna connectors straight up from the socket.

    • Using angled tweezers, hook one end of the tweezer under the connector. Set the other side at the end of the connector on the WWAN card. Keeping the tweezers flat, lightly squeeze.

    • These connectors are extremely fragile; ensure that they are aligned properly.

    • For reassembly, ensure that the antenna connectors are aligned above the sockets and press down gently. There should be a slight click. There should not be much resistance.

    Edit

  14. Dell Latitude 5490 Fan Replacement: step 13, image 1 of 1

    • Carefully slide the WWAN card out from the rear side, from the end where the antennas and bracket were.

    • The WWAN card should come out easily with no tension.

    Edit

  15. Dell Latitude 5490 Fan Replacement, WLAN (WiFi Card): step 14, image 1 of 1

    • Remove the 4 mm screw holding the bracket above the WLAN card with a Phillips #0 screwdriver.

    • Be careful with the antenna connectors located under the bracket. They are fragile. If damaged, you will not be able to access Wi-Fi.

    Edit

  16. Dell Latitude 5490 Fan Replacement: step 15, image 1 of 3 Dell Latitude 5490 Fan Replacement: step 15, image 2 of 3 Dell Latitude 5490 Fan Replacement: step 15, image 3 of 3

    • Carefully remove both antenna connectors. Ensure that you pull the antenna connectors straight up from the socket.

    • Using angled tweezers, hook one end of the tweezer under the connector. Set the other side at the end of the connector on the WLAN card. Keeping the tweezers flat, lightly squeeze.

    • These connectors are extremely fragile; ensure that they are aligned properly.

    • For reassembly, ensure that the antenna connectors are aligned above the sockets and press down gently. There should be a slight click. There should not be tension or resistance while doing so.

    Edit

  17. Dell Latitude 5490 Fan Replacement: step 16, image 1 of 2 Dell Latitude 5490 Fan Replacement: step 16, image 2 of 2

    • Carefully slide the WLAN card out from the rear side, from the end where the antennas and bracket were.

    • The WLAN card should come out easily with no tension.

    Edit

  18. Dell Latitude 5490 Fan Replacement, Chassis Frame: step 17, image 1 of 3 Dell Latitude 5490 Fan Replacement, Chassis Frame: step 17, image 2 of 3 Dell Latitude 5490 Fan Replacement, Chassis Frame: step 17, image 3 of 3

    • Using the angled tweezers, lift the small latches on the ribbon cables that are routed through the chassis. Gently remove them.

    • These cables and their connectors are extremely fragile; exercise caution when removing/inserting them.

    Edit

  19. Dell Latitude 5490 Fan Replacement: step 18, image 1 of 3 Dell Latitude 5490 Fan Replacement: step 18, image 2 of 3 Dell Latitude 5490 Fan Replacement: step 18, image 3 of 3

    • Unroute the WLAN and WWAN antenna cables from the chassis frame.

    Edit

  20. Dell Latitude 5490 Fan Replacement: step 19, image 1 of 2 Dell Latitude 5490 Fan Replacement: step 19, image 2 of 2

    • Using your Phillips #0 screwdriver, remove the eight 7 mm screws.

    • The screws are marked as "P1" or "M2x5" on the chassis frame.

    Edit

  21. Dell Latitude 5490 Fan Replacement: step 20, image 1 of 2 Dell Latitude 5490 Fan Replacement: step 20, image 2 of 2

    • Using your Phillips #0 screwdriver remove the five 4 mm screws.

    • The screws are marked as "P" or "M2x3" on the chassis frame.

    Edit

  22. Dell Latitude 5490 Fan Replacement: step 21, image 1 of 2 Dell Latitude 5490 Fan Replacement: step 21, image 2 of 2

    • Gently lift the chassis frame from the device.

    • Go slowly; you'll notice if you missed any screws or cables if there is resistance while lifting.

    Edit

  23. Dell Latitude 5490 Fan Replacement, Fan: step 22, image 1 of 3 Dell Latitude 5490 Fan Replacement, Fan: step 22, image 2 of 3 Dell Latitude 5490 Fan Replacement, Fan: step 22, image 3 of 3

    • Remove the fan connector from the system board.

    Edit

  24. Dell Latitude 5490 Fan Replacement: step 23, image 1 of 2 Dell Latitude 5490 Fan Replacement: step 23, image 2 of 2

    • Lift the fan out of the laptop.

    Edit
Conclusion

To reassemble your device, follow these instructions in reverse order.

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