Mini motorized brush (for sofa/mattress) does not spin, but main floor head works

Safety first: Remove the battery and detach the mini motorized brush.

• Check for jams: Open the mini head and remove the brushroll. Clear hair and debris from the roll and end caps.
• Inspect connector: Ensure the electrical contacts on the mini head and main body are clean and not bent.
• Test again: Reassemble and test. If the mini head still does not spin while the main floor head does, the mini head's motor or gears are likely faulty.
• Replace accessory: Replace the mini motorized brush with an original Xiaomi part.