Nikon SB-500 AF Speedlight - Manual (Page 70)

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Tips on Speedlight Care and Reference Information
Troubleshooting
Warning indications of flash-ready indicator
Status Flash-ready indicator Cause/solution 0
After firing Flashes for approx. 3 sec.* 1
Correct exposure may not
have been achieved. Use
a wider aperture (smaller
f-number) or higher ISO
sensitivity, or move the
flash unit closer to the
subject and reshoot.
C-2,
E-10
Flash has not
fired
Flashes once a sec.
The Speedlight has
overheated. When the
flash or LED light are used
for an extended period of
time, the thermal cut-out
function suspends flash
firing and the LED light.
Turn the Speedlight off
and wait for it to cool.
F-9
Flashes twice a sec.
Battery power is weak.
Replace batteries.
B-11
Flashes 8 times a sec.
Internal circuit error.
Turn the camera and
Speedlight off, then
remove the Speedlight
and take it to a Nikon-
authorized service
representative.
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*1 When used in i-TTL flash control