论文部分内容阅读
因 CPU 对电源的质量要求较高,在检修有 CPU的电器中,我们既要考虑电源的电压值,还要重视电源内阻和纹波系数等因数素的影响,现举一检修中的实例,以供同行们参考。故障现象:一台富丽3000Ⅱ型放像机,电源指示灯亮,电源控制正常,把磁带推入带仓有轻微进盒动作,但磁带无法进入带仓,随后机器进入保护状态。故障分析:由故障现象知,故障范围在电源、系统控制、加载驱动电路、机械传动和状态检测部分。
Due to the high quality of the CPU power supply overhaul the CPU electrical appliances, we have to consider the voltage of the power supply, but also pay attention to power supply resistance and ripple factor and other factors, is now an example of overhauling , For colleagues for reference. Symptom: A magnificent 3000 Ⅱ type player, power indicator light, power control is normal, the tape into the cartridge slightly into the box, but the tape can not enter the cartridge, then the machine into the protected state. Failure Analysis: By the phenomenon of failure to know the scope of the fault in the power supply, system control, load the drive circuit, mechanical transmission and state detection section.