| 摘要 |
<p>PURPOSE:To make confirmation of the turned off state of the power switch of a control equipment executable, by installing power source sections to a control section and interface unit separately from the power source section for the control equipment and supplying electric power to the control section and interface unit without passing through the power switch. CONSTITUTION:On an acoustic video equipment A side, power is supplied to a main body section 1 from a power source section 16 through a power line 8 and to a control section 3 and interface unit IFU4 from another power source section 17 through power lines 10 and 11. Power is supplied by the power source section 16 from a commercial power source through a power switch 18 and to the power source section 17 without through any power switch from the commercial power source. When such constitution is used, the control section 3 can detect the turned off state of the power switch 18 through a power source detecting line 21 even if the switch 18 is turned off and the detecting information is outputted to a control bus 7 through the unit IFU4. Then the information is displayed on a display device connected with the control bus 7 and turning on operation of the power switch 18, etc., are instructed.</p> |
