Nikon autofocus speedlight SB-900 User Manual page 118

Troubleshooting
If a warning indicator appears, use the following chart to determine the cause of the
problem before you take your Speedlight to a retailer or Nikon representative for repair.
Problems with the SB-900
Problem
The power cannot be
turned on.
The ready-light does not
light up.
A strange sound can
be heard caused by the
fl ash head zooming back
and forth even when the
SB-900 is turned on.
The fl ash shooting
distance range does not
appear.
F
Zoom position does not
set automatically.
The SB-900 does not
work even when any
button is pressed.
The SB-900 does not
fi re.
F–2
Cause
The batteries are not
correctly installed.
Battery power is weak.
The standby function is activated. Turn on the power.
Battery power is weak.
Battery power is weak.
The fl ash head is not set to the
horizontal/front position.
Aperture information has not
been received from the camera.
ISO sensitivity information has not
been received from the camera.
The SB-900 cannot receive the
focal length information from
the camera.
The built-in wide-fl ash adapter
is in use or the Nikon Diffusion
Dome is attached.
Power zoom function
is canceled.
Control buttons are locked.
"Canceling fl ash fi ring"
is activated in the custom
setting.
Master and remote fl ash units
cannot transmit the command
because they are positioned
too near.
The SB-900's temperature
may rise
Solution
Insert the batteries correctly.
Replace the batteries.
Replace the batteries.
Replace the batteries.
Set the fl ash head to the
horizontal/front position.
• Confirm the camera setting.
• Mount the SB-900 to a
camera.
Turn off the SB-900 and camera,
and turn on them again.
• Remove the wide-
flash adapter or the
Diffusion Dome.
• Set the following custom
setting to manual setting:
"Zoom position setting if the
built-in wide-flash adapter is
broken off accidentally."
Activate the auto power
zoom function.
Cancel key lock.
Cancel "Canceling fl ash fi ring"
in custom setting.
Place the master and remote
fl ash units at an appropriate
distance from each other.
Wait until the SB-900 cools
down naturally.
Ref.
page
k
C-4
k
C-27
k
C-28
k
C-27
k
C-27
k
C-6
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—
k
D-29
k
D-31
k
C-25
k
D-57
k
C-9
k
C-23
k
D-44
k
D-51
k
F-6