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Dell Latitude 7490 Speakers Replacement

简介

Use this guide to replace the speakers in your Dell Latitude 7490 laptop.

You may need to replace the speakers if they're scratchy, too quiet, or sound fuzzy.

Note: The left and right speakers are connected by a wire and must be removed and replaced together.

你所需要的

  1. Dell Latitude 7490 Speakers Replacement, Prepare your laptop for disassembly: 步骤 1 中的图像 1，2 Dell Latitude 7490 Speakers Replacement, Prepare your laptop for disassembly: 步骤 1 中的图像 2，2

    • Allow your laptop's battery to drain below 25% before starting this repair—a charged battery may catch fire if damaged.

    • Unplug all cables and fully shut down your laptop.

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  2. Dell Latitude 7490 Speakers Replacement, Flip your laptop over: 步骤 2 中的图像 1，1

    • Flip your laptop over so the rubber feet strips are facing up.

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  3. Dell Latitude 7490 Speakers Replacement, Loosen the captive screws: 步骤 3 中的图像 1，2 Dell Latitude 7490 Speakers Replacement, Loosen the captive screws: 步骤 3 中的图像 2，2

    • Use a Phillips screwdriver to fully loosen the eight captive screws securing the back cover.

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  4. Dell Latitude 7490 Speakers Replacement, Insert an opening pick: 步骤 4 中的图像 1，3 Dell Latitude 7490 Speakers Replacement, Insert an opening pick: 步骤 4 中的图像 2，3 Dell Latitude 7490 Speakers Replacement, Insert an opening pick: 步骤 4 中的图像 3，3

    • Plastic clips secure the back cover to the frame. You'll hear and feel them release as you work.

    • Insert the long side of an opening pick between the top right corner of the back cover and frame.

    • Pry the back cover up to release the clips securing the top right corner.

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  6. Dell Latitude 7490 Speakers Replacement, Release the clips: 步骤 5 中的图像 1，3 Dell Latitude 7490 Speakers Replacement, Release the clips: 步骤 5 中的图像 2，3 Dell Latitude 7490 Speakers Replacement, Release the clips: 步骤 5 中的图像 3，3

    • Slide the opening pick down the right edge and around the bottom right corner to release the clips.

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  7. Dell Latitude 7490 Speakers Replacement: 步骤 6 中的图像 1，3 Dell Latitude 7490 Speakers Replacement: 步骤 6 中的图像 2，3 Dell Latitude 7490 Speakers Replacement: 步骤 6 中的图像 3，3

    • Slide the opening pick along the front edge and up to the top left corner to release the remaining clips securing the back cover.

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  8. Dell Latitude 7490 Speakers Replacement, Remove the back cover: 步骤 7 中的图像 1，3 Dell Latitude 7490 Speakers Replacement, Remove the back cover: 步骤 7 中的图像 2，3 Dell Latitude 7490 Speakers Replacement, Remove the back cover: 步骤 7 中的图像 3，3

    • Remove the back cover.

    • During reassembly, lay the back cover on the frame and press down firmly around the perimeter to engage all the clips.

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  9. Dell Latitude 7490 Speakers Replacement, Disconnect the battery: 步骤 8 中的图像 1，2 Dell Latitude 7490 Speakers Replacement, Disconnect the battery: 步骤 8 中的图像 2，2

    • Grip the plastic tab on the battery connector and pull straight up to disconnect it.

    • During reassembly, align this connector over its socket and press down until it clicks into place. If it doesn't connect, re‑align it and try again.

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  10. Dell Latitude 7490 Speakers Replacement, Disconnect the speakers: 步骤 9 中的图像 1，3 Dell Latitude 7490 Speakers Replacement, Disconnect the speakers: 步骤 9 中的图像 2，3 Dell Latitude 7490 Speakers Replacement, Disconnect the speakers: 步骤 9 中的图像 3，3

    • Use clean fingernails to pull the speaker connector out of its socket on motherboard's bottom left corner.

    • If your fingernails aren't long enough, use a spudger to push on alternating sides of the connector and "walk" it out of its socket.

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  11. Dell Latitude 7490 Speakers Replacement, Reposition the speaker wire: 步骤 10 中的图像 1，3 Dell Latitude 7490 Speakers Replacement, Reposition the speaker wire: 步骤 10 中的图像 2，3 Dell Latitude 7490 Speakers Replacement, Reposition the speaker wire: 步骤 10 中的图像 3，3

    • Use your fingers to guide the speaker wire out of its clips near the left edge of the battery.

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  12. Dell Latitude 7490 Speakers Replacement, Pry up the speakers: 步骤 11 中的图像 1，3 Dell Latitude 7490 Speakers Replacement, Pry up the speakers: 步骤 11 中的图像 2，3 Dell Latitude 7490 Speakers Replacement, Pry up the speakers: 步骤 11 中的图像 3，3

    • The speakers are secured to the frame with rubber grommets.

    • Insert the flat side of an opening pick between the bottom edge of the left speaker and frame.

    • Pry the speaker up to free it from the frame.

    • Use the same process to free the right speaker.

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  13. Dell Latitude 7490 Speakers Replacement, Remove the speakers: 步骤 12 中的图像 1，2 Dell Latitude 7490 Speakers Replacement, Remove the speakers: 步骤 12 中的图像 2，2

    • Remove the speakers.

    • To reinstall a speaker, line the grommets up with their posts in the frame and push the speakers down to secure them.

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结论

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

Take your e-waste to an R2 or e-Stewards certified recycler.

Repair didn’t go as planned? Try some basic troubleshooting, or ask our Answers community for help.

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Spencer Day

于09/14/22注册

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