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I believe a lot of you are blowing in the wrong place. If you have your camera in sensor cleaning mode with the lens off and the sensor is facing you (ie you can read the "Nikon" on the front of the camera and that "Nikon" is right side up) if you are having a lot of dust spots showing up in the "upper left" of the image that will correspond to the "lower LEFT" of the sensor as you are looking at it. Blow there and your spots will go away.A lot of people get this wrong.
Service repair rank B1CLN IMAGE SENSORCKD SHUTTER MECHANISMCKD APERATURE OPERATIONCKD FOCUSING MECHANISMCKD FLASH OPERATIONCKD IMAGE TESTGENERAL CHECK & CLEAN
Service repair rank B1
CLN IMAGE SENSOR
CKD SHUTTER MECHANISM
CKD APERATURE OPERATION
CKD FOCUSING MECHANISM
CKD FLASH OPERATION
CKD IMAGE TEST
GENERAL CHECK & CLEAN
I know the feeling. I have a blower that I have used to try and dislodge dust from the sensor of my D700. I think I get more dust on the sensor each time I clean it, rather than getting any off. Either that or my D700 has oil spot problems like the D600.