Nikon 1 V1 Reference Manual page 80

A
Optional Flash Units
Flash units other than the SB-N5 can not be used. Detailed instructions
may be found in the manual provided with the flash unit. Objects close
to the camera may be overexposed at high ISO sensitivities.
A
The Flash/Capture-Illuminator Status Indicators
If the flash status or capture-illuminator status indicator on the rear of
the flash unit blinks, one of the following errors may have occurred:
The flash status indicator blinks for
about three seconds after a photo-
graph is taken.
The flash or capture status indicator
blinks once a second.
The flash and capture status indicators
t
blink once every two seconds.
The flash status indicator blinks eight
times a second.
60
Display Description
The flash has fired at full power and
the photograph may be underex-
posed. Try reducing the distance to
the subject or increasing ISO sensi-
tivity (0 131).
Continuous use has caused the tem-
perature of the flash unit to rise and
the unit has been disabled to protect
the flash. Turn the unit off and wait
for it to cool.
A data transfer error has occurred.
Check that the flash unit is correctly
attached.
An error has occurred in the unit's
internal circuitry. Turn the camera
off, remove the flash unit, and take
the camera and flash unit to a Nikon-
authorized service center for consul-
tation.