Dell Latitude E7470 Motherboard Replacement

はじめに

This guide will cover the replacement of the motherboard for the Dell Latitude E7470 laptop. The motherboard is the core of the system and as such can be the cause of a variety of issues; replacement could be the solution to a number of problems with a computer. Note that this replacement will require almost full disassembly of the laptop excluding the monitor so take care in sorting your parts and follow all steps carefully.

必要な工具と部品

手順1 Back Cover

注意: 手順 1 は、作業進行中としてマークされているガイドから引用されています。

Dell Latitude E7470 Motherboard Replacement, Back Cover: 手順 1、 1の画像 1

Remove the eight 4 mm screws on the back cover using a Phillips #0 screwdriver.

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手順2 Battery

Dell Latitude E7470 Motherboard Replacement, Battery: 手順 2、 1の画像 1

Use the pull tab on the battery connector to lift the connector straight up off its socket on the motherboard, disconnecting it.

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手順3

Remove the single 4 mm Phillips screw securing the bottom left corner of the battery.
If you are removing an extended capacity battery, remove the Phillips screw securing the bottom right corner of the battery.

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手順4

Remove the battery from the laptop.

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手順5 Speakers

Dell Latitude E7470 Motherboard Replacement, Speakers: 手順 5、 2の画像 1

Dell Latitude E7470 Motherboard Replacement, Speakers: 手順 5、 2の画像 2

Unplug the four pin speaker connector from the motherboard.

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手順6

De-route the speaker wire harness from the guide rails.

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手順7

Dell Latitude E7470 Motherboard Replacement: 手順 7、 3の画像 3

Use a Phillips #0 screwdriver to remove the left and right mouse button assembly screws.
This allows you to slightly lift the assembly and gain full access to the wire harness that links the left and right speaker units. You do not need to fully remove the button assembly.

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手順8

Dell Latitude E7470 Motherboard Replacement: 手順 8、 3の画像 3

Starting with the left speaker (your right), carefully lift the units away and de-route the wire harness linking them.
Take note of the soft boots that hold each speaker in place. They should lift freely away, but if needed you may wedge them loose by hand or with your spudger.

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手順9 Network Card

Dell Latitude E7470 Motherboard Replacement, Network Card: 手順 9、 2の画像 1

Dell Latitude E7470 Motherboard Replacement, Network Card: 手順 9、 2の画像 2

Use a halberd spudger and your fingers to detach two wires from the Wi-Fi card.

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手順10

Remove the single screw from the Wi-Fi card using a Phillips #0 screwdriver.

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手順11

Use an iFixit opening tool and your fingers to pull the Wi-Fi card out of its socket.

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手順12 Motherboard

Dell Latitude E7470 Motherboard Replacement, Motherboard: 手順 12、 3の画像 1

Dell Latitude E7470 Motherboard Replacement, Motherboard: 手順 12、 3の画像 2

Dell Latitude E7470 Motherboard Replacement, Motherboard: 手順 12、 3の画像 3

Remove the RAM sticks by pulling the holding clips in opposite directions, then pull the sticks straight out.
Remove the RAM housing by unscrewing the two 2 mm screws using a Phillips #0 screwdriver.
Lift the metal housing from the motherboard.

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手順13

Remove the two 2 mm screws using a Phillips #0 screwdriver.
Remove the metal bracket.
Use your fingers to pull the plastic tab on the LCD connector straight up.
Remove the charge port connector by pulling straight out from the connector housing.

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手順14

Dell Latitude E7470 Motherboard Replacement: 手順 14、 3の画像 3

Unplug the fan's power connector.
Remove the four 2 mm screws holding in the heat sink using a Phillips #0 screwdriver.
Carefully lift the entire laptop cooling assembly straight up from the motherboard.

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手順15

Dell Latitude E7470 Motherboard Replacement: 手順 15、 3の画像 3

Remove the antenna wires from the rubber housing.
Remove all wire connections on the motherboard.
The 'flat' wires have a different connector which will require you to flip a tab up that anchors the wire. Then you can pull the wire straight out parallel to the motherboard.

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手順16

Dell Latitude E7470 Motherboard Replacement: 手順 16、 3の画像 3

Remove all 2mm screws anchoring the motherboard to the laptop casing using a Phillips #0 screwdriver.
Remove the four 2 mm screws on the from back plate around the docking port using a Phillips #0 screwdriver.
Lift the metal bracket off of the laptop.

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手順17

Carefully lift the motherboard straight up from the laptop.
If you feel any resistance, check that there are not any screws or connections that you may have missed.

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