... Move the Safety switchto Testposition.5. Move the button A,when the 10 LED in “Test indicationlight RED, ... Turn on the cable switch And then move the button “A,D,F" to “ON" position. Now if you press ... do the sequential fire—For example, to make districts“A,D,Ito do sequential fire .First, adjust the sequential ... time, and then turn on the districts“A,D,I,make sure the rest are off. And then ...