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CONNECTING THE POWER SUPPLY
The Medical-Nikkor 120mm f/4 accepts either AC or DC power units, allowing the lens to be used indoors or out.
• DC Power Unit LD-2
This battery unit holds eight 1.5V AA-type penlight batteries. To install the batteries, first slide the battery chamber lid in the direction of the arrow, and open the lid (1) . Remove the battery clip. Load the batteries making sure that the positive and negative (+ and - ) poles are aligned correctly as shown inside the battery clip . Put the battery clip back into the chamber, making sure that the contacts go in first (2). Then, slide the lid back into place. When replacing batteries, replace all eight at once.
To connect the battery unit to the lens, plug one end of the power cord 5C-21 (supplied with the lens) into the power socket on the lens barrel by aligning the arrow on the plug with the T mark next to the socket (3). Then , align the white dot on the other end of the plug with the metallic dot near the edge of the LD-2's power socket, and push the plug into the socket until it clicks into place (4) .
To remove the plug from the DC unit, grasp the plug by its metal locking ring and pull it out.
Caution: Before connecting the power cord SC-21 to or discon.- necting it from the LD-2, make sure that the power switch is off. Otherwise, the ringlight might be damaged.
