Lenovo Miix 520 Disassembly (SSD, RAM Upgrade Options)

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In this guide, I will disassemble a Lenovo Lenovo Miix 520 tablet. I will remove the display assembly in order to access the internal battery, RAM, SSD, Wi-Fi card, speaker, cooling fan, heat sink and motherboard.

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The Lenovo Miix 520 2-in-1 laptop is designed to meet the needs of the mobile workforce. They hope that while ensuring the product light and portability, but also able to have high performance to meet the needs of the high-load office. The Miix 520 equipped with the latest eighth-generation Intel Core processors. It comes with up to 16GB DDR4 memory, maximum support 1TB SSD, these powerful configuration options have surpassed many of today’s thin and light notebooks. The Lenovo Miix 520 review please click here.
Lenovo Miix 520

Open the bracket you can see the screws, and this disassembly will start from here.
Lenovo Miix 520 bracket

Unscrew the screw on the LCD hinges, remove the cover, you can see there are three screws inside, a total of five screws to ensure that the LCD hinges and the metal bracket fixed firmly.
remove LCD hinge

Remove the screws on both sides to remove the metal bracket, the bracket made of aluminum-magnesium alloy, while ensuring the lightweight but also take into account the strength.
remove bracket

After removing the screws that secure the back cover, carefully release all the snaps along the edge of the screen to separate the screen from the housing. Before removing the screen you need to disconnect two cables first.
remove display

When you split the screen assembly, the internal structure of the Miix 520 is unobstructed.
Lenovo Miix 520 internal picture

The two cables on the back of the screen are the display cable and the touch cable, and their circuit board is located in the lower right corner of the screen.
Lenovo Miix 520 display

The layout of the cooling modules is quite satisfactory, but there is a considerable spatial surplus around the battery. The volume of the loudspeaker is also not large, which is the most obvious problem of the internal structure of Miix 520.
Lenovo Miix 520 internal

Also, the two copper tubes used only a fan to be responsible for the heat dissipation. And a copper tube is passed directly above the SSD, so that the temperature of the copper tube is bound to raise the temperature of the SSD.
Lenovo Miix 520 heat sink and cooling fan

A row of small holes below the volume buttons is actually the cooling vents on the other side.
Lenovo Miix 520 cooling vents

There is a spare part on the top left corner of the machine, which is supposed to be the 4G module, that is, the Miix 520 will also have a 4G version.
Lenovo Miix 520 4G LTE model

Before continuing to disassemble, we need to disconnect the battery connector.
disconnect battery connector

Remove all screws securing the battery and take out the battery.
It comes with a 7.68V, 38Wh, 4955mAh Li-ion battery.
Lenovo Miix 520 battery

Under the battery we can see the contact of the magnetic keyboard, which is connected to the main board through a cable. Only five contacts can complete the signal transmission of the keyboard and the touch board at the same time. It is still amazing.
Lenovo Miix 520 keyboard contacts

The Micro SD card reader can be seen on the left side of the battery.
remove Micro SD card reader

Micro SD card reader module
Micro SD card reader

Left and right speaker module
speaker module

BIOS battery
BIOS battery

The top left is a pair of noise-canceling microphones
remove noise-canceling microphones

Noise-canceling microphone
Noise-canceling microphones

The front and rear camera
front and rear camera

Rear camera
Rear camera

Unscrew the five fixing screws around the cooling module to remove the cooling module.
The back of the heat sink, you can see the bottom of the copper tube is covered with black insulating paper, which can prevent the copper heat conduction to the SSD.
Heat sink

The cooling fan
Cooling fan

Next, we will remove the SSD and wireless network card.
Remove SSD

The Lenovo Miix 520 comes with a Samsung 256GB PM961 PCIe NVMe M.2 SSD.
Lenovo Miix 520 M.2 SSD

Remove one screw and unplug two antenna cables.
Remove Wi-Fi card

Intel Dual Band Wireless-AC 3165 Wi-Fi card with Bluetooth 4.2
Wi-Fi card

On the right side of the machine, there are two cables connecting the button on the right and the fingerprint recognition module respectively. The design of separation from the main board is beneficial to the convenience of maintenance.
Lenovo ThinkPad 25 palm rest

The power button, volume button, and 3.5mm headphone jack circuit board
remove I/O board

I/O board

Fingerprint recognition module
Fingerprint recognition module

The front camera is fixed on the memory shield
Remove front camera

The front camera module
Front camera module

The front of motherboard

The back of motherboard

Open the metal shield can see the memory chips.
The memory chips on front of the motherboard

memory chips

There are memory chips on the back of the main board.
The memory chips on back of the motherboard

The bottom case is also made of magnesium-aluminum alloy with high strength. In addition, the antenna is also placed on the top of the machine to maximize the intensity of the signal reception and transmission intensity.
Bottom case

Its LCD hinges are the same as YOGA 920.
LCD hinges

From the disassembly point of view, Miix 520 interior design is good, the maintenance is not difficult, and its internal space utilization also needs to be improved.
Miix 520 parts
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