Nikon SB-21 Instruction Manual page 45

DC Power Unit LD·2
Leave the four 1.5V AA-type batteries inside the con-
troller ; without them, the underexposure ready-light
indication might not be as bright.
1. Open the LD-2's battery chamber lid and remove the
battery holder. (Fig . 1)
2. Install eight 1.5 V AA-type batteries in the LD-2's
battery holder, then put the battery holder back in to
the battery chamber so the notch on the battery
holder is aligned with the lid inside the battery
chamber. (Fig. 2)
3. Make sure the LD-2's power switch is turned off.
4. Slide the controller's power source terminal switch
down to uncover the power source terminal, then
insert the SC-21 's female plug so the arrows on the
plug are aligned with those on the terminal. (Fig. 3)
Fig.1
5. Insert the SC-21 's male plug into the LD-2's power
cord terminal so the white dot on the plug is aligned
with the metallic dot near the terminal. Then push
the plug until it clicks into place. (Fig . 4)
6.
Turn on the LD-2. (Fig 5)
After use
1.
Turn off both controller and LD -2.
2. Unplug the SC-21 plug from the LD -2's power cord
terminal , grasping the plug by its metallic lock ring .
3. Unplug the SC-21
's other plug from the S8-21 .
Fig.3
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