Asus Zen Aio Pro Z240Ic Heat Sink Replacement Repair Guide

Difficulty

Moderate

Steps

Time Required

                          35 minutes

Sections

Screen
6 steps
WiFi (WLAN) Card
2 steps
Fan
2 steps
Motherboard
4 steps
Heat Sink
2 steps

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Introduction

What you need

Step 1

              Screen

Use the plastic opening tool to pry off the black plastic strip at the bottom of the screen by wiggling the tool between the strip and the screen.
The strip is held in place with adhesive. You may hear a crackling sound as the strip is peeled off.
Run the opening tool slowly along the base of the screen, peeling the black strip back, until the opposite end of the screen is reached.

Use the plastic opening tool to pry off the black plastic strip at the bottom of the screen by wiggling the tool between the strip and the screen.

The strip is held in place with adhesive. You may hear a crackling sound as the strip is peeled off.

Run the opening tool slowly along the base of the screen, peeling the black strip back, until the opposite end of the screen is reached.

1024

Step 2

Use a Phillips #1 screwdriver to remove the seven (7) 4.8 mm screws from the base of the screen.

Use a Phillips #1 screwdriver to remove the seven (7) 4.8 mm screws from the base of the screen.

Step 3

Place the computer on its back, facing up.
Wedge the plastic opening tool in between the screen and the bezel of the aluminum computer casing.
Move the tool along the entire edge of the screen with an up-and-down prying motion to loosen the screen from the casing. Do not lift the entire screen away from the computer yet.
The screen is held in place by plastic tabs. These will create a popping sound when loosened.
The screen assembly will flex as it is pried off. Do not bend the screen too far or the glass screen could shatter.

Place the computer on its back, facing up.

Wedge the plastic opening tool in between the screen and the bezel of the aluminum computer casing.

Move the tool along the entire edge of the screen with an up-and-down prying motion to loosen the screen from the casing. Do not lift the entire screen away from the computer yet.

The screen is held in place by plastic tabs. These will create a popping sound when loosened.

The screen assembly will flex as it is pried off. Do not bend the screen too far or the glass screen could shatter.

Step 4

Lift the screen from the bottom edge by about 6 inches. Prop it open with one hand.
Look inside the computer and locate five (5) cables that connect the embedded components of the screen (camera, microphone, etc.) to the rest of the computer.

Lift the screen from the bottom edge by about 6 inches. Prop it open with one hand.

Look inside the computer and locate five (5) cables that connect the embedded components of the screen (camera, microphone, etc.) to the rest of the computer.

Step 5

Remove the two (2) cables that are connected to the computer by white, rectangular terminal blocks by pulling straight out on the plug.
The cables and wires in these steps are delicate; do not tug on the individual wires that make up each cable.

Remove the two (2) cables that are connected to the computer by white, rectangular terminal blocks by pulling straight out on the plug.

The cables and wires in these steps are delicate; do not tug on the individual wires that make up each cable.

Step 6

Use a finger to lift the plastic locking flaps that hold the remaining three (3) ribbon cables in place.
Remove the cables from their terminals by slipping them away from their connectors.
The black line on the ribbon cables mark the connecting region. When reinstalling, insert the cable up to this line so the locking flap covers it.

Use a finger to lift the plastic locking flaps that hold the remaining three (3) ribbon cables in place.

Remove the cables from their terminals by slipping them away from their connectors.

The black line on the ribbon cables mark the connecting region. When reinstalling, insert the cable up to this line so the locking flap covers it.

Step 7

              WiFi (WLAN) Card

Locate the WLAN card in the upper left hand corner of the computer.
Use a Phillips #1 screwdriver to remove the 3.2 mm screw on the top of the WLAN card.

Locate the WLAN card in the upper left hand corner of the computer.

Use a Phillips #1 screwdriver to remove the 3.2 mm screw on the top of the WLAN card.

Step 8

Pull out the WLAN card from its socket.
Remove the two antennae wires from the WLAN card by pulling up on the coaxial connectors.

Pull out the WLAN card from its socket.

Remove the two antennae wires from the WLAN card by pulling up on the coaxial connectors.

Step 9

Fan

Use a Phillips #0 screwdriver to remove the three (3) 4.8 mm screws from the fan unit.
Remove the cable connecting the fan to the motherboard by pulling the cable out of its socket.

Use a Phillips #0 screwdriver to remove the three (3) 4.8 mm screws from the fan unit.

Remove the cable connecting the fan to the motherboard by pulling the cable out of its socket.

Step 10

Remove the fan by peeling off the black electrical tape holding it against the heat sink vents.

Remove the fan by peeling off the black electrical tape holding it against the heat sink vents.

Step 11

              Motherboard

Remove the six (6) ribbon cables by lifting up on the plastic locking tabs and then slipping the cables out of their sockets.
Remove the other two (2) cables by pulling straight out on the white connectors.
One ribbon cable is hidden beneath black tape.
The motherboard is ESD sensitive. Limit your contact with the green circuit board surface and electrical components. When handling the board, hold it by the edges.
The black lines on the ribbon cables mark the connecting region. When reinstalling, insert the cables up to this line so the locking flap covers it.

Remove the six (6) ribbon cables by lifting up on the plastic locking tabs and then slipping the cables out of their sockets.

Remove the other two (2) cables by pulling straight out on the white connectors.

One ribbon cable is hidden beneath black tape.

The motherboard is ESD sensitive. Limit your contact with the green circuit board surface and electrical components. When handling the board, hold it by the edges.

The black lines on the ribbon cables mark the connecting region. When reinstalling, insert the cables up to this line so the locking flap covers it.

Step 12

Use a Phillips #1 screwdriver to remove nine (9) 3.2 mm screws from the motherboard.
Two of the screws near the middle of the board are hidden beneath padding.
Use a Phillips #1 screwdriver to remove the one (1) 4.8 mm screw directly below the copper heat sink channel.

Use a Phillips #1 screwdriver to remove nine (9) 3.2 mm screws from the motherboard.

Two of the screws near the middle of the board are hidden beneath padding.

Use a Phillips #1 screwdriver to remove the one (1) 4.8 mm screw directly below the copper heat sink channel.

Step 13

Lift the motherboard just enough to dismount it from the plastic pegs that hold it in place.
Rotate the motherboard towards yourself while supporting the heat sink by pivoting on its bottom edge.

Lift the motherboard just enough to dismount it from the plastic pegs that hold it in place.

Rotate the motherboard towards yourself while supporting the heat sink by pivoting on its bottom edge.

Step 14

Remove the SATA cable on the opposite side of the motherboard by pulling directly up from the board.

Remove the SATA cable on the opposite side of the motherboard by pulling directly up from the board.

Step 15

              Heat Sink

Use a Phillips #1 screwdriver to loosen the four (4) large silver screws evenly in the order of the numbers engraved next to each screw.
Use a Phillips # 0 to loosen the other four (4) 2.4 mm screws evenly in the order engraved on the copper next to each screw.
Repeat the last two bullets until all the larger silver screws make a clicking sound and the 2mm screws are removed.
The silver screws cannot be completely removed.
Peel away the black tape between the RAM shield and the heat sink.
When reattaching the heat sink to the motherboard, make sure to tighten the screws a little bit at a time, in the same order as before, until they are all snug.

Use a Phillips #1 screwdriver to loosen the four (4) large silver screws evenly in the order of the numbers engraved next to each screw.

Use a Phillips # 0 to loosen the other four (4) 2.4 mm screws evenly in the order engraved on the copper next to each screw.

Repeat the last two bullets until all the larger silver screws make a clicking sound and the 2mm screws are removed.

The silver screws cannot be completely removed.

Peel away the black tape between the RAM shield and the heat sink.

When reattaching the heat sink to the motherboard, make sure to tighten the screws a little bit at a time, in the same order as before, until they are all snug.

Step 16

Remove the heat sink by lifting up.
During reassembly, make sure to use a fresh application of thermal paste. Refer to the following guide: How to Apply Thermal Paste

Remove the heat sink by lifting up.

During reassembly, make sure to use a fresh application of thermal paste. Refer to the following guide: How to Apply Thermal Paste

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

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                    Jessica Lerena

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                       Cal Poly, Team S4-G1, Livingston Fall 2017                        

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