Nikon SB-21 instruction manual External Power Source, After use, About grounding

EXTERNAL POWER SOURCE ------------ I

For an external power source, use Nikon AC Unit LA-2 or DC Unit LD-2. 80th require Nikon power cord SC-21 .

To protect the S8-21 from damage, observe the following .

AC Power Unit LA·2

1.Remove the batteries from inside the controller.

2.Using a coin, set the LA-2's voltage selector to the proper voltage setting. (Fig. 1)

3.Make su re the LA-2's power switch is turned off.

4.Slide the controller'spower source terminal switch down to uncover the power source terminal , then insert the SC-21 'sfemale plug so the arrows on the plug are aligned with those on the terminal. (Fig. 2)

5.Insert the SC-21'smale plug into the LA-2's power cord terminal so the white dot on the plug is aligned with the metallic dot near the terminal , then push until it clicks into place. (Fig. 3)

6.Plug the grounding cord (supplied with the LA-2) into the ground terminal at the back of the LA-2.

7.Plug the LA-2'sAC cord into an electrical outlet.

8.Turn on the LA-2. The LA-2'spilot lamp comes on immediately. (Fig. 4)

After use

1.Turn off both controller and LA-2.

2.Unplug the AC cord from the electrical outlet.

3.Unplug the ground cord from the ground terminal.

4.Unplug the SC-21 plug from the LA-2 's power cord terminal , grasping the plug by its metallic lock ring .

5.Unplug the SC-21 's other plug from the S8-21 .

		I	.",.---------			\
			About grounding
		I	• With electrical outlets hav·			I
		I		ing a ground terminal , se-		I
		I		curely connect the ground		I
		I		cord to the ground terminal.		I
		I • To connect the ground cord I
		I		to a metallic water tap, I
		I		wind the cord	securely
				around the tap . (Plastic I
Fig . 1	Fig . 2	I		taps cannot be used for		I
		I		grounding .)		I
		I • Never connect the ground I
		\ ....		cord--------to a gas pipe.	;I

Fig. 3Fig . 4

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