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故障现象一：血球计数测量时，样品搅拌泵电机不转。故障查找与检修：此机无电路图给检修带来一定难度，只能对实物采取观察、分析、测量的方法进行检修。从实物上看，搅拌泵是一小型带减速机构的直流电机，电机上没有标出工作电压。故障时测量电机两端电压只有１．５Ｖ，据机
Symptom 1: When the blood count is measured, the sample stir pump motor does not turn. Fault finding and overhaul: This circuit has no circuit diagram to bring certain difficulty to the maintenance. Only the method of observation, analysis and measurement can be used for overhaul. From a physical point of view, the stirring pump is a small DC motor with a deceleration mechanism, and no operating voltage is marked on the motor. Measuring the voltage across the motor at the time of fault is only 1.5V.