Modern cleaning devices such as the Xiaomi Mi Robot Vacuum or Roborock are complex engineering systems that require maintenance over time. Often users are faced with the need to replace a worn battery, clean lidar sensors from dust or eliminate the stuckness of foreign objects in a turbobrush. Self-disassembly of the vacuum cleaner allows you to save significant money on the services of service centers, if you act carefully and know the sequence of actions.
The dismantling process requires a minimum set of tools and a basic understanding of electronics. It is important to note at once that breaking seals can lead to a loss of warranty, so you should only start working if the warranty period has already expired or the device is purchased from dealers without official support. In this article, we will discuss in detail the steps of opening the case, disabling the plumes and safely removing key components.
Before any manipulations begin, you need to completely disconnect the device from the charging station and make sure that it is not in operation mode. It is critical to wait for all engines and fans to completely stop before turning the robot to the side. Unpreparedness can lead to short circuit or mechanical damage to fragile plastic mounts, which are often made in the form of latches in Xiaomi equipment.
Workplace preparation and necessary tools
The robot vacuum cleaner starts to be dismantled well before you pick up the screwdriver, and you need to have a well-lit space with a flat surface covered with soft material to avoid scratching the glossy plastic of the case. Chaotic screw spreading is the main mistake of beginners, leading to the inability to assemble the device back.
Xiaomi and Roborock’s hardware most often requires PH1 and PH2 size cross screwdrivers, as well as a flat blade to open the latches. Some models, especially the newer series, may have screws with hidden heads under stickers or rubber legs, which requires increased care when inspecting the bottom panel.
- 🔧 A set of precision screwdrivers (cross and flat) for working with small screws.
- 🧤 Antistatic gloves to protect electronics from static electricity.
- 📱 Smartphone with camera for photographing the stages of disassembly and location of plumes.
- 🧲 Magnetic mat or container with cells for sorting fasteners.
Using a magnetic mat or at least a sheet of paper with markup will help you not to confuse screws of different lengths. Xiaomi devices often use screws of different lengths to attach the upper and lower covers, and installing a long screw in a short hole can damage the inner board or body.
☑️ Preparation for disassembly
Initial inspection and removal of external modules
The first stage of dismantling always starts at the bottom of the device, and you turn the robot vacuum cleaner upside down and you look at the surface carefully, and you have to remove all the removable elements, the side brush, the main roller brush, the dust collector, and the other parts. HEPA-This will free up access to the main screws of the mounting of the body.
Often, under the main garbage collector there are screws that lock the bottom cover. In some models, such as the Xiaomi Vacuum Mop, you also need to remove the wet cleaning tank if it is installed. Note the condition of the screws: if they have traces of factory paint, this confirms that the device has not been opened before.
⚠️ Warning: Before unscrewing the screws, be sure to remove the battery if the design of the model allows you to do this without completely disassembling.In most cases, the battery is hidden under the bottom cover, but its contacts may remain energized.
Once you remove the visible screws, take your time to pull the lid, use a plastic blade or mediator around the perimeter of the junction of the upper and lower parts of the body, and if you click the cleat, you'll see that the latch has snapped, and if you move it, you can break the plastic hooks, and then you'll have to regenerate them with glue.
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Photograph the location of each screw before removing it, which will save you hours of searching when you build it back, especially if the screws differ in length and diameter of the thread.
Dismantling the top cover and access to electronics
When the bottom panel is successfully removed, it opens up access to the main board, turbine engine and navigation system. The top cover of Xiaomi robots is usually held on several screws and plumes connecting the control buttons to the motherboard. Be extremely careful: the plumes are very thin and easily break when handled carelessly.
To remove the top, you need to carefully disable the connectors. In laser rangefinder (LDS) models, it is important not to damage the brittle rotating mechanism of the turret. If your goal is to replace the battery, it is often enough to simply bend the top cover without removing it completely to access the battery compartment.
The main elements that need attention in this phase are:
- 🔋 Lithium-ion battery – power source that loses capacity over time.
- 🧠 Motherboard – the central processor for managing all systems.
- 🌀 The engine of the main brush - the drive that ensures the rotation of the roller.
- 📡 Wi-Fi module – antenna and chip communication with cloud server.
When disconnecting the plumes, use a plastic tool, not a metal screwdriver, so as not to damage the conductive tracks. If the connector has a locking lock, it must first bend upwards, and only then pull the plume. Neglecting this rule is a common reason for the failure of equipment after "repair".
How do you bend the plume safely?
Battery replacement and battery maintenance
Reduced battery life is the most common reason owners decide to disassemble a Xiaomi vacuum cleaner.The standard life of lithium-ion cells is about 300-500 charge cycles, after which the capacity drops and the robot can't clean the entire apartment.
The battery in Xiaomi robots is usually an assembly of several elements of the 18650 format, enclosed in a plastic casing and connected to a control board (BMS). To replace you can buy a ready-made compatible module or, if you have soldering skills, replace the cells themselves, retaining the native protection fee.
| Parameter | Standard value | Permissible range |
|---|---|---|
| Nominal voltage | 14.4 B | 14.0 - 14.8 V |
| Capacity | 5,200 mAh | 4800 - 6000 mic |
| Type of element | Li-Ion 18650 | High-current |
| Connection connector | 2-pin / 3-pin | Depends on the model. |
When installing a new battery, make sure that the polarity of the connection is strictly observed. A connection error "+" and "-" can instantly disable (motherboard) or cause fire. After a physical replacement, you need to conduct a full charge-discharge cycle to calibrate the battery controller.
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Use only overheat and short circuit protection elements. Cheap, unlabeled counterparts may not have built-in fuses, which is dangerous for smart tech.
Cleaning and maintenance of sensors and wheels
The robot's internal cavities accumulate not only dust over time, but also animal hair, hair and small debris that can block the movement of machinery. Particular attention should be paid to the main wheel module and the side brush, where long fibers are often wound, causing engine errors.
To clean the Cliff sensors, use soft tissue slightly moistened with alcohol, and the contamination of these sensors causes the robot to "think" what is on the edge of the stairs and randomly change direction or stop in the middle of the room.
The main components for regular cleaning:
- 👁️ Cliff sensors – located around the perimeter of the bottom.
- ⚙️ Wheel bearings – require removal of coiled wool and lubricant.
- 🌪️ The turbine of the main engine - often clogged with fine dust, reducing thrust.
- 🔄 Side brush mechanism – the mounting site is often clogged with debris.
If the wheel is hard to scroll by hand after cleaning, you may need to disassemble the wheel module itself, you may need to dry out the factory lubricant or get a foreign object, use compressed air to blow dust out of hard-to-reach areas, but do not direct the jet directly to microphones or speakers.
Assembly of the device and verification of functionality
The final stage, reverse assembly, requires even more concentration than disassembly. Make sure all the plumes are securely snapped in the connectors, and the wires are laid in their channels and do not fall under moving parts or screws. The improperly laid wire can be clamped with the body, which will lead to a break in the contact after a while.
Twisting the screws gradually, cross-to-cross to ensure that the parts of the case fit evenly. Don't put too much effort: the plastic in Xiaomi's technique is high quality, but brittle at point pressure. If the screw doesn't go, check if the holes are correctly combined.
⚠️ Warning: Don't turn the device on immediately after assembly. 10-15 You can use the lids to dissipate the static electricity and the components to fall into place.
The first run is better done away from carpets and obstacles. Watch the robot's behavior: listen for unusual noises, check the response to commands from the application. If all systems are working properly, you can start a full cleaning cycle for final inspection.