Eclipse AVN7400 is not power on

Hi All,
I have recently bought 2011 toyota prius hybrid. My aux-battery was discharged, one technician just removed battery connection to check voltage. Then he reconnect battery connection and did a jump start as battery voltage is low. Then vehicle started fine. The issue is my multimedia system and reverse camera is not functioning after that. It doesn't even switch on. It looks like it is not getting power. I am having Eclipse AVN7400. The system is in Japanese language. There is a message on the screen which is in Japanese . I have attached screen shot of this message. If any body can explain what it says and can help I greatly appreciate.