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原文
After the motor does not power the six reasons After all cars powered electric bicycle is the motor does not turn, this is why? The motor can be a general failure in the following six points: 1) In the first case the most simple, is the fuse burned. In this case, replace the fuse, the motor ok, this failure has the lowest maintenance costs. 2) The second situation is the power switch is broken, replace the power switch. Determine methods: turn the power switch with a multimeter ohm range measuring the power switch between the input and output resistance, such as the resistance value of zero is normal, such as the resistance is infinite, then the power switch is broken, replace the power switch. 3) The third is a Hall switch to nasty. Specific diagnostic method is to use a multimeter measure the DC voltage profile switch to the green line of the output voltage, output voltage if 1-4.2, then turn to normal, if no voltage output is transferred to the burn, turn to be replaced. 4) controller bad. File with a multimeter measure the DC voltage output of the red controller wire (connected to switch the cord), if the output voltage of 5 volts is the normal controller, the voltage output of the controller without the burn, the need to replace the controller. 5) The motor of the wiring head loose, then plug back of each check. May also be placed in the battery compartment when the frame is not in place, contact a bad contact. 6) The last case is the motor burned out. The connection will disconnect the motor and controller, and the remaining lines are connected, slowly turn the motor with a multimeter to measure the Hall line, to see whether the signal voltage, if a phase change, is the motor burned Hall element , resulting in phase, the need to replace the motor. This is also the most expensive maintenance costs.
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译文：

译文：
电动自行车全车通电后，就是电机不转，这是什么原因呢？一般电机的故障可以出在以下6点：　　1）第一种情况最简单，就是保险丝烧掉。这种情况下，更换保险丝后电机就ok了，这个故障维修费用也最低了。　　2）第二种情况是电源开关坏，更换电源开关。判断方法：打开电源开关，用万用表欧姆档测量一下电源开关的输入端与输出端之间的电阻，如电阻值为零则正常，如电阻值为无穷大，则电源开关坏，应更换电源开关。　　3）第三种是霍耳转把坏坏了。具体诊断方法是用万用表直流电压档测量一下转把输出端绿色线的输出电压，如有1-4.2电压输出，则转把正常，如无电压输出则转把烧坏，需更换转把。　　4）控制器坏。用万用表直流电压档测量一下控制器输出端红色接线（接转把线的插头），如有5伏左右电压输出则控制器正常，如无电压输出则控制器烧坏，需更换控制器。　　5）电机各接线头松动，把每个接插头重新检查一遍。还可能是电池盒放入车架时不到位，触点接触不好。　　6）最后一种情况是电机烧坏。将电机与控制器的连线断开，其余线均接好，慢慢转动电机，用万用表测霍尔线，看信号是否有电压变化，若有一相无变化，则是电机霍耳元件烧掉，造成缺相，需更换电机。这种情况也是维修费用最贵的。

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