Nikon D5500 Product Manual - Page 364

❚❚ Manual Cleaning If foreign matter can not be removed from the image sensor using the Clean image sensor option in the setup menu (0 338), the sensor can be cleaned manually as described below. Note, however, that the sensor is extremely delicate and easily damaged. Nikon recommends that the sensor be cleaned only by Nikon-authorized service personnel. 1 Charge the battery. A reliable power source is required when inspecting or cleaning the image sensor. Be sure the battery is fully charged before proceeding. 2 Remove the lens. Turn the camera off and remove the lens. 3 Select Lock mirror up for cleaning. Turn the camera on and highlight Lock mirror up for cleaning in the setup menu and press 2 (note that this option is not available at battery levels of H or below). 4 Press J. The message shown at right will be displayed in the monitor. 5 Raise the mirror. Press the shutter-release button all the way down. The mirror will be raised and the shutter curtain will open, revealing the image sensor. 340 Technical Notes