if it does not pick up dirt when in the vertcal position (i.e from the floor beaters) then it may be a problem with the short tensioning hose underneath (see http://mr-ives.blogspot.com/2007/10/dyson-vacuum-cleaners.html)
jives
October 2007
go to the dyson website. they have excellent diagnostic pages. i fixed mine using the instructions.
Nigel Lee Gray
October 2006
Check the number again on your machine as I don't believe there is such a model as a DC09.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix vacuum cleaners.