Nikon Troubleshooting, When the ready-light on the SB-400 blinks, Cause Procedure

Troubleshooting

If a warning indication appears on the SB-400's ready-light or inside the camera's viewfinder, use the following chart to determine the cause of the En problem before you take your Speedlight to a Nikon service center for repair.

Warning indication inside the camera's viewfinder

Warning indication		Cause	Procedure
The ready-light in the		Underexposure may	• Shorten the shooting distance.
viewfinder blinks for 3		have occurred.	• Set camera’s aperture to a larger
sec. after firing.			(f/3.5, f/4.5 or f/5.6).
			• Set the camera's ISO sensitivity
			higher.
When mounted to the		Lens' focal length is set	• Set the focal length longer than
D40,	blinks in the	shorter than 18mm.	18mm.
camera's viewfinder.
When mounted to the		The flash head of the	• For bounce flash shooting, take
D40,	blinks in the	SB-400 is not set to the	the picture without any change.
camera's viewfinder.		horizontal position.	• For standard flash shooting, tilt the
			flash head to the horizontal position.

When the ready-light on the SB-400 blinks

Ready-light blinks	Cause	Procedure
The ready-light blinks	Underexposure may	• Shorten the shooting distance.
for 3 sec. at 4 Hz.	have occurred.	• Set camera’s aperture to a larger
		(f/3.5, f/4.5 or f/5.6).
		• Set camera's the ISO sensitivity higher.
The ready-light blinks	Battery power is not	• Replace or recharge batteries.
for 40 sec. at 2 Hz.	enough.
The ready-light blinks at	The SB-400 is mounted to a camera which is not compatible
interval of 0.5 sec. at 8	with CLS (SB-400 is usable only with cameras compatible with
Hz.	CLS).
The ready-light blinks at	The body temperature	• Wait until the body temperature
1 Hz.	becomes high because	drops and ready-light turns on
	of repeating flash or	again.
	other cause.

• Hz (frequency) is blinking time per second.

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