Nikon D5500 - Manual (Page 119)

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Manual Pop-up Modes
In P, S, A, M, and 0 modes, the flash must be raised manually. The
flash will not fire if it is not raised.
1
Raise the flash.
Press the
M (Y) button to raise the
flash.
2
Choose a flash mode (P, S, A, and M modes only).
Keeping the
M (Y) button pressed, rotate the command dial
until the desired flash mode appears in the information
display.
3
Take pictures.
The flash will fire whenever a picture is taken.
M (Y) button Command dial Information display
M (Y) button
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