Lenovo Thinkpad T450 Daughterboard Replacement

Введение

Also known as the daughter card, piggyback card, or mezzanine board, the daughterboard is an extension of the motherboard. The daughterboard is typically connected to the motherboard via a series of cables. Similar to the motherboard, the daughterboard has pins, plugs, sockets, and connectors to be attached to other boards.

As for the Lenovo ThinkPad T450 laptop, the daughterboard houses the USB port on the upper left side of the laptop. If you find that the devices you plug into this USB port are not being recognized, it may be time to replace the daughterboard. Follow these simple instructions to replace the daughterboard in your device.

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Шаг 1 External Battery

Lenovo Thinkpad T450 Daughterboard Replacement, External Battery: шаг 1, изображение 1 из 3

Lenovo Thinkpad T450 Daughterboard Replacement, External Battery: шаг 1, изображение 2 из 3

Lenovo Thinkpad T450 Daughterboard Replacement, External Battery: шаг 1, изображение 3 из 3

Using your hands, slide the two locking tabs away from each other to release the battery.
Slide the battery up and out of the device.

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Шаг 2 Back Cover

Lenovo Thinkpad T450 Daughterboard Replacement, Back Cover: шаг 2, изображение 1 из 1

Using the JIS #00 screwdriver, unscrew seven screws from the back cover.
These screws are not removable and will remain in the back cover.
Use the JIS #00 screwdriver to remove the single 2.8 mm screw from the back cover.

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Шаг 3

Lenovo Thinkpad T450 Daughterboard Replacement: шаг 3, изображение 3 из 3

Insert a plastic opening tool into the edges of the laptop and work your way around the edges to pry off the back cover from the device.
Remove the back cover from the device.

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Шаг 4 RAM

Lenovo Thinkpad T450 Daughterboard Replacement, RAM: шаг 4, изображение 1 из 2

Lenovo Thinkpad T450 Daughterboard Replacement, RAM: шаг 4, изображение 2 из 2

Lift up the black piece of tape and remove it to uncover the RAM sticks underneath.

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Шаг 5

Using your fingers, push the two clips securing the RAM away from each other to release the RAM.
The RAM stick should pop up at a 30 degree angle.
Remove the RAM stick from the device.
Repeat this step for any additional RAM sticks.

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Шаг 6 Fan and Heatsink Assembly

Lenovo Thinkpad T450 Daughterboard Replacement, Fan and Heatsink Assembly: шаг 6, изображение 1 из 1

Using the JIS #00 screwdriver, unscrew the four screws securing the fan and heatsink assembly to the motherboard.
These screws are not removable and will stay on the fan and heatsink assembly.

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Шаг 7

Disconnect the fan and heatsink assembly from the motherboard using the plastic opening tool.

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Шаг 8

Lift up the fan and heatsink assembly and remove it from the device.
When you reassemble your device, don't forget to reapply thermal paste to the back of the heatsink and fan assembly. For proper technique and thermal paste application, please visit the How to Apply Thermal Paste guide.