Nikon D300 D300 User's Manual - Page 401

2 Select an option. Highlight one of the following options and press J. Option Description 5 Clean at startup The image sensor is automatically cleaned each time the camera is turned on. 6 Clean at shutdown The image sensor is automatically cleaned during shutdown each time the camera is turned off. 7 Clean at startup & shutdown The image sensor is cleaned automatically at startup and at shutdown. 8 Cleaning off (default) Automatic image sensor cleaning off. D Image Sensor Cleaning The following interrupt image sensor cleaning: raising the built-in flash, pressing the shutter-release, depth-of-field preview, or B button, or using FV lock. Cleaning is performed by vibrating the image sensor. If dust can not be fully removed using the options in the [Clean image sensor] menu, clean n the image sensor manually (pg. 376) or consult a Nikon-authorized service representative. If image sensor cleaning is performed several times in succession, image sensor cleaning may be temporarily disabled to protect the camera's internal circuitry. Cleaning can be performed again after a short wait. 375