| 摘要 |
<P>PROBLEM TO BE SOLVED: To surely supply electrical power to at least either one of a first actuator driving device 50 and a second actuator driving device 60. <P>SOLUTION: Turning-on and turning-off of the first to third relays 32, 33 and 34 are controlled in such a way that when a certain trouble occurs at any one of a main power supply line 100, an auxiliary power supply line 101, a first electrical power supplying line 102, a second electrical power supplying line 103, a first relay 32 and a second relay 33, the troubled line is isolated or the troubled line is separated from a non-troubled line or a supplying of the electrical power to the troubled line is shut off or an electrical power is supplied to a line in which no electrical power can be supplied. <P>COPYRIGHT: (C)2008,JPO&INPIT |
