How to disassemble Xiaomi RedmiBook laptop 4X: detailed instructions with photos and nuances

Disassembly of the Xiaomi RedmiBook laptop 4X This model, which was released in 2023, is modular in design, but requires careful handling of plastic latches and plumes. Unlike budget laptops of other brands, here are used cruciform screws of the standard. T5, not common Phillips #0, which often causes damage when the tool is not selected correctly.

Many users are afraid to disassemble Xiaomi equipment because of rumors about the “fragility” of Chinese devices. 4X designed with service in mind: compartments for RAM and SSD They're available without completely dismantling the motherboard, and the cooling system is mounted on 4 screws, which makes it easier to clean it, so you have to follow a clear algorithm and not put too much effort on the plastic cells.

Preparation for disassembly: tools and security measures

Before starting work, make sure that the laptop is completely off and the battery is off.

1. Turn off the device via the Start Menu → Completion of work.
2. Turn over your laptop and remove the back cover (even if you haven’t unscrewed it yet – the battery usually shuts down through the connector on the motherboard).
3. Disconnect the battery plume by pulling the black plastic tongue (not by the wires!).

Minimum set of tools for disassembling RedmiBook 4X:

• 🔧 Screwdriver. T5 (magnetically-tipped)
• 📏 Plastic mediator or guitar mediator (to separate latches)
• 🧲 Magnetic substrate or screw container (so as not to lose)
• 🔍 Loop or flashlight (to inspect small connectors)
• 🧴 Alcohol wipes (for cleaning contacts)

⚠️ Warning: Do not use metal mediators - they can damage Wi-Fi antennas located under the back cover.

If you are planning to clean the cooling system, prepare also:

• 🌬️ Compressed air cylinder (for blowing out dust)
• 🧴 Thermopaste Arctic MX-6 noctua NT-H2 (dry-up)
• 🔧 Phillips Cross Screwdriver #00 (for Cooler screws)

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Before disassembling, take a picture of the location of the screws on the back cover - their length may vary (for example, screws at the hinges are shorter than at the center).

Removal of the back cover: a step-by-step algorithm

RedmiBook back cover 4X It's mounted on 12 screws (10 short and 2 long hinges) and plastic latches around the perimeter. Start by unscrewing the screws in the following order:

1. Remove 4 screws in the center (near the ventilation grilles).
2. Unscrew 2 long screws at the hinges (they fix the lid and hinges at the same time).
3. Remove 6 screws at the edges (2 right, 2 left, 2 bottom).

Once the screws are removed, take a plastic mediator and start detaching the lid from the lower right corner (there are fewer latches). Insert the mediator at an angle of 30.° And you can take it along the seam, and you can take it one by one, and you can take it off:

• 🔳 Corners near the ventilation grilles (there are latches the tightest)
• 🔳 Areas near ports USB-C and HDMI (There's antenna cables)
• 🔳 The center of the upper part (there is a touchpad connector hidden there)

⚠️ Warning: If the lid fails, do not force - check if all screws are unscrewed. Frequent error: 2 screws are allowed under rubber legs (they must be removed first).

After removing the cover, you will see:

• 🖥️ Motherboard with radiator and cooler
• 💾 Slot M.2 2280 for SSD (metal-covered)
• 🔋 Battery (6 cells, 56 Wh)
• 📶 Wi-Fi 6 antennas (stick to the cover)

Access to RAM and SSD

RedmiBook 4X maintain 16 GB DDR4-3200 (2 slot SO-DIMM) and SSD format M.2 2280 PCIe 4.0 x4. For the upgrade:

1. RAM: Click the locks on the sides of the slot (pull them to the sides). Remove the old bar at an angle of 30.°. Install a new one by evenly pressing on both edges before clicking.

SSD:

• Unscrew 1 screw fixing the metal cover of the slot.
• Pull the drive tongue (if it is not - carefully tuck the mediator).
• Insert the new one. SSD at an angle, then press and twist the screw.

Compatible models SSD for RedmiBook 4X:

Important: When replacing SSD You must transfer the Windows license. 10/11 via your Microsoft account or use NirSoft’s ProduKey utility to extract the key.

Cleaning the cooling system: nuances and errors

RedmiBook Cooling System 4X consist:

• 🌀 Copper radiator with 2 heat tubes
• 🌬️ Sunon fan PF40101VX-Q000U-G99 (40×10 mm)
• 🧊 Thermopasts (factory - Dow Corning) TC-5622)

For cleaning:

1. Unscrew 4 screws of the radiator mount (in the corners, in the order of diagonal).
2. Carefully remove the radiator, swaying from side to side (the heat paste can "steep").
3. Clean the fan blades with a cotton swab soaked in alcohol.
4. Blow the dust out of the radiator with compressed air (hold the fan blades so that they do not unwind).

Typical errors in cleaning:

• ❌ Using a vacuum cleaner - can damage fan blades with static electricity.
• ❌ Applying a too thick layer of thermopaste (optimally - 0.3-0.5 mm).
• ❌ Forget to clean the dust from the back of the motherboard (up to 30% of garbage accumulates there).

⚠️ Attention: If after cleaning the laptop began to overheat, check: Density of the adhesion of the radiator (all 4 screws must be tightened); Integrity of thermotubes (they should not bend); Fan operation (when starting it should be short-lived to 5000 rpm).

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Factory Thermopaste on RedmiBook 4X It's drying up after 1.5 to 2 years of operation. MX-6 Reduces the temperature of the processor by 5-8°C under load.

Disassembly of the keyboard and touchpad

RedmiBook keyboard 4X It is mounted on 5 screws (under the lid) and double-sided tape around the perimeter:

1. Turn off the keyboard plume (connector) ZIF-20 metal-latched).
2. Unscrew the screws in order: top central → lower-angle → lateral.
3. Put the keyboard on the top edge with a mediator and carefully separate it from the body.

The touchpad is integrated into the top panel and is mounted on:

• 2 screws under the keyboard
• 1 plume (ZIF-12, near-battery connector)

Frequent problems in disassembly:

• 🔹 Damage to the keyboard plume (it goes under the battery - do not pull the wires!).
• 🔹 Breaking of bilateral tape (when reassembling, use 3M VHB 4910).
• 🔹 Loss of small screws of key attachment (there are 4 pieces under the keys) F1–F4).

If you need to replace the keyboard, suitable models:

Replacing the battery: risks and recommendations

RedmiBook battery 4X (model L19M4PD2, 56 Wh) is mounted on 6 screws and double-sided scotch:

1. Turn off the power supply plume (connector) JST PH-2 orange-tongued).
2. Unscrew the screws in order: first the corner, then the central.
3. Put the battery on the left side with the mediator (there are no board elements).

Original batteries to replace:

• 🔋 L19M4PD2 (original, ~6,000 rubles.)
• 🔋 NB-BAT-RB4X (baseus, ~4500 rubles.)

⚠️ Note: When buying a battery, check: Availability of a charge controller (on non-original ones may not be available); Production date (life of Li-Pol battery - 3-4 years from the date of manufacture); Compliance of the connector (on RedmiBook) 4X 4-pin plume is used. Non-original batteries may not correctly display the charge level in the BIOS.

After battery replacement:

1. Connect your laptop to charging and let the battery “swing” (3 full charge/discharge cycles).
2. Install BatteryBar utility to monitor real capacity.
3. V BIOS (F2 when switched on, reset the power settings to factory (Load Defaults).

Laptop Assembly: Checking and Testing

When building RedmiBook 4X Follow the reverse order, but pay attention to:

• 🔹 Density of the adjoining Wi-Fi antennas (they should lie in the slots of the cover).
• 🔹 Correct connection of the touchpad plume (connector) ZIF-12 has a key, a white triangle).
• 🔹 Tightening of the radiator screws (puffing moment - 0.5 N·m, do not pull over!).

After assembly, it is mandatory:

1. Launch your laptop and check: Keyboard operation (all keys in Notepad); Touchpad (gestures and clicks); Wi-Fi and Bluetooth (plug the device in).

Prime95

HWMonitor

• Processor: up to 85°C under load.
• SSD: before 60°C.

If after assembly the laptop does not turn on:

• 🔌 Check the connection of the battery plume and power buttons.
• 🔌 Make sure that the RAM is installed to the end (the locks must be clicked).
• 🔌 Drop it. BIOS, battery-free CR2032 30 seconds.

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If the cooler is louder after cleaning than before disassembly, check the balance of the blades. Often the dust accumulates unevenly, and one blade is heavier than others - this leads to vibration.

FAQ: Frequent questions about RedmiBook disassembly 4X