Alex,
Alex wrote:The only correction I would make is never to turn your cammera on with lens off unless mirror is locked up. Once you remove lens with the camera on the sensor is known for attracting dust particles.
No, not really.
Under normal circumstances, with the lens removed from the camera, the sensor remains protected by the focal plane shutter as well as the mirror. If you rem,ove your lens and carefully lift the mirror a little way, you can actually see the shutter in place, in front of and totally obscuring the sensor, just as a shutter fully obscures the film in a film camera.
Further, that "attraction" that you're referring to as a result of the "charging" of the CCD in order to capture the exposure. Thus causes a build-up of a static electricityin the CCD, thus creating the "attraction" that you're referring to.
Normally, the CCD is uncharged, and thus this "attraction" is not present.
Further, the actual question I was answering was one of how to locate the sensor - as in where is it - rather than how to clean it.