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一、问题的提出北京广播器材厂生产的CSD-I-II-I型单通道电视发射机的激励器和系统控制部分电源是靠手动开启和关断的。对于值班员来说,一般在开机时都能认真按照开机顺序开机,而在播出完了的关机操作就很容易出错。因这时一般已近午夜,值班人员经过一天的工作,精神多有疲蘼,所以容易发生操作失误。该机在播出完了关机时,完全关机需分两步操作:先关掉低压开关,经五分钟自动延时风冷后,再手动关掉激励器和系统控制电路部分的电源开关。如值班员疏忽,这第二步操作易被遗漏。所以,风机关机后,应及时将激励器完全断电或整机完全断电,以保证机器安全。二、改进方法和步骤改进目的:播出完了关机时,值班员只需一次关掉
First, the issue raised Beijing Broadcasting Equipment Factory production CSD-I-II-I single-channel television transmitter exciter and system control part of the power is manually switched on and off. For the attendant, generally boot the boot sequence can be carefully in accordance with the boot, and the broadcast of the shutdown operation is very easy to go wrong. Because at this time is generally near midnight, on duty after a day of work, the spirit of fatigue, so prone to operational errors. When the machine is off completely, it needs to be divided into two steps: first turn off the low-voltage switch, and after five minutes, delay the air-cooling, and then manually turn off the power switch of the exciter and the system control circuit. If attendant negligence, this second step is easy to omit the operation. Therefore, the fan shutdown, the exciter should be promptly completely off or complete machine power, in order to ensure the safety of the machine. Second, to improve the methods and steps to improve the purpose: broadcast off shutdown, attendant only once off