If you are using a notebook, you should ensure that the camera is being properly supplied with power. Many of the built-in IEEE1394 connectors on notebooks and the connectors in add-on IEEE1394 PCMCIA cards only have a 4 pins instead of the normal 6 pins. The two missing pins are for the wires used to supply power to the camera. If your notebook's built-in connector or the connector on its PCMCIA card has only 4 pins, it will not supply power to the camera and your camera will not work. In this case, you can purchase an adapter cable (ZY-FO-Trigger-xM) from NET with extra power input.