故障现象：仪器在对样品做血小板聚集功能检测的过程中，不能正常绘制聚集曲线坐标。故障分析与排除：开启电源开关，打印机能够正常打印四个方框，画血小板聚集线坐标时，打印机不按程序胡乱打印，怀疑计算机内存紊乱，根据仪器的维护与维修说明，先关闭电源，略过数秒后，一 Symptoms: The instrument can not draw the coordinates of the accumulation curve during the process of detecting the platelet aggregation function of the sample. Failure analysis and exclusion: Turn on the power switch, the printer can normally print four boxes, draw platelet aggregation line coordinates, the printer does not follow the program random printing, doubt the computer memory disorder, according to the instrument maintenance and repair instructions, first turn off the power, slightly After a few seconds, one