Acer Chromebook CB3-431-C5EX Motherboard Replacement

はじめに

This is a guide to replace a faulty motherboard in an Acer Chromebook CB3-431-C5EX laptop. You will need a Phillips #0 screwdriver, iFixit opening tool, Tweezers, and a Heat gun. Be cautious when removing the motherboard because of having to handle wires.

必要な工具と部品

手順1 Bottom Panel

Acer Chromebook CB3-431-C5EX Motherboard Replacement, Bottom Panel: 手順 1、 1の画像 1

Working on your device while it is turned on may result in electric shock. Make sure to shut down and unplug your device before you begin.
Turn device over so the bottom panel is facing you.

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手順2

Remove the eight 4mm Phillips #0 screws.
Remove the two 6mm Phillips #0 screws.

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手順3

Insert a plastic opening tool into the crack between the bottom panel and the side of the computer.
Gently pry the panel off the computer by continuously pulling up and on the panel and moving the plastic opening tool around the crack until the panel comes off.
There are several clips holding the cover in place.
Remove the bottom panel and set it aside.

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手順4 Battery

Acer Chromebook CB3-431-C5EX Motherboard Replacement, Battery: 手順 4、 1の画像 1

Remove the two 4mm Phillips #0 screws on either side of the battery pack that are securing it in place.

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手順5

Disconnect the taped white 8-pin cable on the bottom right of the battery pack.
Use thumbnail to pull on the small protruding tabs on either side of the connector.

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手順6

Carefully lift the entire battery pack out of the laptop.

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手順7 Motherboard

Acer Chromebook CB3-431-C5EX Motherboard Replacement, Motherboard: 手順 7、 2の画像 1

Acer Chromebook CB3-431-C5EX Motherboard Replacement, Motherboard: 手順 7、 2の画像 2

Remove the 4.7 mm screw from the Wi-Fi card using a Phillips #0 screwdriver.
Remove the Wi-Fi card from the laptop.

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手順8

Unplug the black wire connecting the small circuit board to the motherboard.

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手順9

Acer Chromebook CB3-431-C5EX Motherboard Replacement: 手順 9、 3の画像 3

Lift the respective white and black tabs and slide the ribbon cables out of their connectors.

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手順10

Carefully remove the display adapter from the motherboard.

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手順11

Remove the black tab connecting the motherboard to the keyboard.

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手順12

Remove the five 4.7 mm screws from the motherboard using a Phillips #0 screwdriver.
Remove the two 4.5 mm screws from the motherboard using a Phillips #0 screwdriver.
Gently remove motherboard from the laptop.