Nikon D90 user manual Manual Cleaning

❚❚Manual Cleaning

If foreign matter can not be removed from the low-pass filter using the Clean image sensor option in the setup menu (pg. 244), the filter can be cleaned manually as described below. Note, however, that the filter is extremely delicate and easily damaged. Nikon recommends that the filter be cleaned only by Nikon-authorized service personnel.

1Charge the battery or connect an AC adapter.

A reliable power source is required when inspecting or cleaning the low-pass filter. If the battery level is below J(60%), turn the camera off and insert a fully-charged EN-EL3e battery or connect an optional EH-5a or EH-5 AC adapter.

2Remove the lens.

Turn the camera off and remove the lens.

3Select Lock mirror up for cleaning.

Turn the camera on. Highlight Lock mirror up for cleaning in the setup menu and press 2 (note that this option is not available at battery levels of Jor below).

4Press J.

The message shown at right will be displayed in the monitor and a row of dashes will appear in the control panel and viewfinder. To restore normal operation without inspecting the low- pass filter, turn the camera off.

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 low-pass filter. The viewfinder display will turn off and the control panel display will blink.

n	6 Examine the low-pass filter.
	Holding the camera so that light falls on the
	low-pass filter, examine the filter for dust or lint.
	If no foreign objects are present, proceed to
	Step 8.

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