| 摘要 |
<p>PURPOSE:To attach and detach a board in a low current consumption state by providing a circuit which switches the clock, which is supplied to a dynamic element mounted on the board, to the stop state or the supply state. CONSTITUTION:At the time of pulling out a board 1, a board exchange switch 2 is turned on to set the clock stop state, and a connector 5 of the board 1 is pulled out from a mother board 6. At the time of inserting the board 1, the connector 5 of another board 1 where the board exchange switch 2 is turned on is inserted to the mother board 6, and thereafter, the board exchange switch is turned off to set the clock supply state, and the operation state is set. Further, the clock stop state is set by the remote control at the time of pulling out or inserting the board 1. Thus, the board 1 is safely and surely attached and detached in the power supply state without flowing an excessive current to any terminal of the connector 5 of the board 1.</p> |
