274 Turn on the devicesTurn on the power of the recorderTurn on the power of the recorder. When using the recorder for the first time, register the license for the recorder. (☞ Page 29)Important:• When using extension units, connect all the extension units to the power cords and turn on the power of all the extensionunits before turning on the power of the recorder.Step 1Connect the provided power cord to the power cordinlet on the rear panel of the recorder, and insert thepower plug to an outlet whose rating is as follows.WJ-NX400K: 120 V AC, 60 HzWJ-NX400K/G: 220 V - 240 V AC, 50 Hz/60 Hz→ The [OPERATE] indicator on the front of the recorder willlight, the system check will start, and the startup windowwill be displayed on the main monitor.Important:• Never turn off the power of the recorder during startup.• Insert the power cord fully into the power supply terminalso that it will not loosen or come out.• Fix the power cord firmly at 15 cm to 20 cm {5-7/8 to7-7/8 inches} from the plug with the provided powercord clamp to prevent the cable from unplugging.How to use the power cord clamp⋇⋈Clamp mountPower cord clamp① Pass the power cord clamp through the clamp mount.② Make a ring with the power cord clamp as shown in theillustration to tighten the power cord.⋉15 cm to 20 cm{5-7/8 to 7-7/8 inches}③ Tighten the power cord at 15 cm to 20 cm {5-7/8 to 7-7/8inches} from the connector and fix it to the clamp mount.Cut the unnecessary part of the power cord clamp asnecessary.