Nikon D3400 Reference Manual - English - Page 314

Error Messages This section lists the indicators and error messages that appear in the viewfinder and monitor. A Warning Icons A flashing d in the monitor or s in the viewfinder indicates that a warning or error message can be displayed in the monitor by pressing the W (Q) button. Indicator Monitor Viewfinder Solution 0 Lens not attached F/s (flashes) • Attach compatible lens. • If lens is not type E or G, select 252 105 mode M. A lens with a retractable lens Before taking photos, rotate the zoom ring to extend the lens. F (flashes) barrel button is attached with the lens barrel retracted. Press the retractable lens barrel button and rotate the zoom ring to 16 extend the lens. Shutter release disabled. Recharge battery. d/s (flashes) Turn camera off and recharge or replace battery. 12, 13 This battery cannot be used. It does not communicate properly with this camera. To use the camera safely, d (flashes) Use Nikon-approved battery. 267 choose a battery designated for use in this camera. Initialization error. Turn camera off and d/ Turn camera off, remove and k replace battery, and then turn 13, 18 then on again. (flashes) camera on again. 290 Technical Notes