How do I clear a blockage on my Dyson SV12?

First, disconnect your machine from the charger before looking for blockages, and leave it to cool down. Check the main body by removing the bin and inspecting the air inlet, then check both ends of the wand, and finally check the cleaner head for obstructions on the brush bar and air inlet. Make sure all parts are completely cleared and securely refitted before using your machine again. (Page 8)