Samsung Series 9 NP900X4B-A02 I/O PCB Replacement

Introduction

Following this guide will ensure a safe and easy way to replace the Input/Output Printed Circuit Board (I/O PCB) in your Samsung Series 9 (NP900X4B-A02) laptop. No other skills are required to to replace this board, which means anyone can accomplish this task.

The I/O PCB is the board that controls most of the interaction between a person and their computer. As with other circuit boards, a problem with your I/O PCB can be difficult to diagnose. Before replacing your I/O PCB, be sure that the board is the cause of the issue.

Before beginning this guide, ensure that your laptop is powered off and disconnected from its power source.

What you need

Step 1 Battery

Samsung Series 9 NP900X4B-A02 I/O PCB Replacement, Battery: step 1, image 1 of 2

Samsung Series 9 NP900X4B-A02 I/O PCB Replacement, Battery: step 1, image 2 of 2

Ensure computer is unplugged and powered down before continuing.
Remove the ten screws along the base using a Phillips #000.
Use a Plastic Opening Tool to pry open the base .

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Step 2

The battery is now unobstructed from your view.
Before removing the battery, use the plastic opening tool to detach the ribbon wire cable that connects the battery to the motherboard.

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Step 3

Use the Phillips #000 screwdriver to remove six screws that are holding the battery in place.

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Step 4

Lift and pull out the battery.

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Step 5 Speaker

Samsung Series 9 NP900X4B-A02 I/O PCB Replacement, Speaker: step 5, image 1 of 3

Samsung Series 9 NP900X4B-A02 I/O PCB Replacement, Speaker: step 5, image 2 of 3

Samsung Series 9 NP900X4B-A02 I/O PCB Replacement, Speaker: step 5, image 3 of 3

Unplug the left speaker's cable from the motherboard.
Lift up and remove the left speaker.

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Step 6

Samsung Series 9 NP900X4B-A02 I/O PCB Replacement: step 6, image 3 of 3

Unplug the right speaker's cable from the motherboard.
Lift up and remove the right speaker.

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Step 7 Fan

Samsung Series 9 NP900X4B-A02 I/O PCB Replacement, Fan: step 7, image 1 of 2

Samsung Series 9 NP900X4B-A02 I/O PCB Replacement, Fan: step 7, image 2 of 2

Next locate the two Phillips #0 2.5mm screws on both the top right and bottom left corner of the fan.

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Step 8

After locating the screws, using the Phillips #0 screwdriver, remove the screws from the fan.

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Step 9

Use the plastic opening tool to remove the cable connector from its housing which is just to the right of the fan.

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Step 10

Once the cable has been removed from its housing you are free to remove the fan from the laptop.
You can either clean the fan with a computer duster or other cleaner, or replace it with a new one.

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