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Update 10th January 2020
On February 26, 2014, Nikon released a Service Advisory informing users of the D600 that Nikon would provide corrective servicing, free of charge, of D600 cameras exhibiting a particular issue.
This announcement is to inform users of the D600 that this offer of free corrective servicing ended on January 10, 2020. Service to address this issue requested after the offer of free service expires will be handled in accordance with standard Nikon repair policies.
Some users have indicated the appearance of multiple granular dust spots in images captured with the Nikon D600 digital-SLR camera. These granular dust spots are reflections of internal dust generated with camera operation, or external dust particles that have found their way into the camera, either, or both of which, have adhered to the camera's low-pass filter.
While the structure and concept of digital-SLR cameras make the complete elimination of these dust spots very difficult, it has come to our attention that, in some rare cases, they may be reflected noticeably in images. Therefore, Nikon is informing users of a service to reduce this issue again.
Today, we announce that we will further expand the service available to users of the D600 as follows.
As a first step, please follow the guidance from the User’s Manual (pages 301-305) related to the “Clean Image Sensor” function and manual cleaning using a blower. If these measures do not remove all dust particles and you are still experiencing problems, then please consult your nearest Nikon service center. They will service your camera, including the inspection, cleaning, and replacement of the shutter and related parts. You will not be charged for this service, and Nikon will pay all shipping costs, both to and from the Nikon service centre. However, if a number of multiple granular dust spots are still noticeable in images captured with a D600 upon which the above service has been performed several times, Nikon will replace it with a new D600 or an equivalent model.
Please direct inquiries regarding this matter to your nearest Nikon service center or create a Free service returns request.
We sincerely apologize for any inconvenience this matter may cause you. Nikon will continue to take all possible measures to further improve product quality. Therefore, we hope that you will continue to choose Nikon for your photographic needs.