Xiaomi Vacuum Robot Gen 1 Repair (LIDAR Error 1)
The LIDAR motor is broken, the robot is on strike – for under 10 euros it’s as good as new again.
The symptom: Error 1, nothing works anymore
Here is the translation: The Xiaomi Mi Robot Vacuum first generation is a great robot vacuum – affordable, reliable, and easily integrated into a smart home via Valetudo or Xiaomi Home. Until one day the notorious Error 1 appears: the robot drives a few centimeters, stops and reports a laser sensor error via voice announcement.
Here is the translation: The orange LIDAR tower on the top no longer rotates. Without a rotating laser, the robot cannot create a map – and refuses to do any cleaning.
Here is the translation: The defect is mechanical, not electronic. A worn-out small motor or a broken drive belt – both available for under 10 euros on eBay or AliExpress. The repair takes ~30 minutes with a Phillips-head screwdriver.
"The Cause" or depending on context: "The Reason" --- Could you please provide the full text you would like me to translate? It seems only the title **"Die Ursache"** was submitted. I'm ready to translate the complete text as soon as you share it.
The LIDAR sensor is rotated by a **small DC motor** via a **drive belt** (O-ring). After a few hundred hours of operation, one of two things happens:
- The carbon brushes in the motor are worn out – the motor no longer runs or only runs jerkily.
- The drive belt is broken or worn out – the motor is spinning, but the laser turret is not.
In both cases, the firmware detects that no rotation is occurring and outputs Error 1.
**Required Materials**
- LIDAR motor (RF-500TB-14415 or compatible, fitting Xiaomi Gen 1) – approx. 5-10 € on eBay/AliExpress
- Replacement drive belt (O-ring) – included with most motor kits
- Phillips screwdriver PH1 and PH2
Here is the translation: Even if only the belt has snapped: if you already have the robot open, go ahead and replace the motor at the same time. After the same amount of operating time, the carbon brushes are usually worn out as well. It costs 3 euros more and saves you from having to open it up a second time in six months.
Repair Step by Step
Step 1: Remove lid
Here is the translation: Turn off the robot completely. Remove the upper cover above the dust container. Loosen the screws that secure the entire white plastic lid. Lift carefully – there is a short ribbon cable that must not be torn off.
Step 2: Expose the LIDAR unit
Under the cover sits the orange LIDAR module, secured with four screws. Loosen these, carefully lift the module, and disconnect the motor's power connector.
Step 3: Replace the motor
Here is the translation: Two small screws hold the motor in the LIDAR unit. Pull out the old motor, insert the new one. Place the new drive belt around the motor shaft and laser turret. Reconnect the power cable.
Step 4: Assembly and Testing
Assemble in reverse order. Place on the charging station, start cleaning. The orange tower should now rotate evenly again.
When reinserting the LIDAR unit, make sure that the drive belt is not twisted and that the motor shaft sits cleanly in the guide. If the turret briefly rotates after assembly but then gets stuck, the belt is usually incorrectly fitted.
Conclusion
Here is the translation: Error 1 on the Xiaomi Gen 1 sounds more dramatic than it actually is. Replace the motor and belt, 30 minutes of work, less than 10 euros in materials – and the robot runs like new again. Anyone who isn't all thumbs and owns a screwdriver can save themselves from buying a replacement. It's definitely the more sustainable option.