电脑主板计时专用晶振FC-12M时钟晶振X1A000021000200

电脑主板计时专用晶振FC-12M时钟晶振X1A000021000200

爱普生晶振	尺寸(长宽高)	型号	频率	负载电容	精度	工作温度
X1A000061000200	2.05x1.2x0.6mm	FC-12M	32.768kHz	12.5pF	+/-20.0ppm	-40 to +85°C
X1A000061000300	2.05x1.2x0.6mm	FC-12M	32.768kHz	12.5pF	+/-30.0ppm	-40 to +85°C
X1A000061000600	2.05x1.2x0.6mm	FC-12M	32.768kHz	7pF	+/-20.0ppm	-40 to +85°C
X1A000061000800	2.05x1.2x0.6mm	FC-12M	32.768kHz	9pF	+/-20.0ppm	-40 to +85°C
X1A000061001400	2.05x1.2x0.6mm	FC-12M	32.768kHz	12.5pF	+/-10.0ppm	-40 to +85°C
X1A000061002100	2.05x1.2x0.6mm	FC-12M	32.768kHz	6pF	+/-20.0ppm	-40 to +85°C
X1A000061002400	2.05x1.2x0.6mm	FC-12M	32.768kHz	9pF	+/-10.0ppm	-40 to +85°C
X1A000061003000	2.05x1.2x0.6mm	FC-12M	32.768kHz	8pF	+/-20.0ppm	-40 to +85°C
X1A000061003200	2.05x1.2x0.6mm	FC-12M	32.768kHz	6.6pF	+/-20.0ppm	-40 to +85°C
X1A000061003500	2.05x1.2x0.6mm	FC-12M	32.768kHz	7pF	+/-10.0ppm	-40 to +85°C
X1A000021000200	2.05x1.2x0.6mm	FC-12M	32.768kHz	10pF	+/-20.0ppm	-40 to +85°C
X1A000021000700	2.05x1.2x0.6mm	FC-12M	32.768kHz	10pF	+/-20.0ppm	-40 to +85°C
X1A000021000800	2.05x1.2x0.6mm	FC-12M	32.768kHz	10pF	+/-20.0ppm	-40 to +85°C
X1A000021001000	2.05x1.2x0.6mm	FC-12M	32.768kHz	9pF	+/-20.0ppm	-40 to +85°C
X1A000021001100	2.05x1.2x0.6mm	FC-12M	32.768kHz	10pF	+/-20.0ppm	-40 to +85°C
X1A000021001600	2.05x1.2x0.6mm	FC-12M	32.768kHz	7pF	+/-20.0ppm	-40 to +85°C

电脑主板计时专用晶振FC-12M时钟晶振X1A000021000200

电脑里的实时时钟与石英钟是一样的道理，要是不供电，实时钟是不会走的。开机时由机箱电源供电，关机后由主板电池供电。由主板电池供电到机箱电源供电由一个专门电路切换。开机时实时钟准确，说明电源向32.768k晶振供电正常，32.768K晶振本身也没有问题;关机断电时钟不走说明切换电路有故障，主板电池不能向32.768K晶振供电，因此32.768K晶振停振，因此时钟不走了。所以这种故障应重点检查从主板电池到32.768之间的电路。重点检查切换电路。往往由于一个小元件有问题就能发生这种故障。