Nikon SB-28 - Manual (Page 17)

You can perform simple test firing by pressing the
~ button to
ensure that the SB-28 is working properly.
1 Press the
= button to turn the SB-28 on.
2 After the ready-light comes on, press the
~ button to fire
the SB-28.
NOTE
If the SB-28 enters the standby mode, press the
~ button once
to turn the flash back on, then press the
~ button again to test-fire
the unit.
17
Test firing