1、先简后繁。先容易的问题,后困难较大的问题,不要一开始就陷在一个难题上。
1. First simple, then complex. Solve the problems that are easy to solve first, and then solve the problems with greater difficulties. Don't get stuck in a difficult problem at the beginning.
2、先外后内。优先对暴露在外面,易接触、易拆卸的部件进行检测,然后再对不易接触和拆卸的部件进行检测。
2. First outside, then inside. Firstly, the exposed, easily accessible and easily disassembled parts shall be inspected, and then the parts that are not easy to be touched and disassembled shall be inspected.
3、先熟后生。对常见的搅拌车故障部位行检查,往往可迅速确定故障部位,省时省力。
3. Ripen first, then raw. The common fault parts of the mixer truck are checked first, which can quickly determine the fault location and save time and effort.
4、先静后动。这里的“静”是指不启动的静止状态;“动”是指启动发动机后的工作状态。不要盲目启动汽车,应先做必要的检查和电气性能测试(看有无漏电、打火或短路处),然后再启动工作,可保证汽车的。
4. First static, then dynamic. Here, "static" refers to the static state without starting, while "dynamic" refers to the working state after starting the engine. Do not start the car blindly. Do necessary safety inspection and electrical performance test (to see if there is leakage, ignition or short circuit), and then start the work to ensure the safety of the car.
5、先电源后负载。电源故障是常见的故障之一,因此电气部分出故障后一般应检查电源部分。
5. Power supply before load. Power failure is one of the most common faults, so the power supply should be checked first after the electrical part fails.
6、先一般后特殊。先检查一般故障,再查特殊故障。
6. First general, then special. First check the general fault, then check the special fault.
7、先公用后专用。要先公共性的问题和各部分所共有的问题,后个别性和专用电路的问题。
7. Public use first and then private use. We should first solve the problems of commonality and common problems of all parts, and then solve the problems of individual and special circuits.
8、分段检查。分段检查搅拌车是指在故障诊断中,对怀疑有搅拌车故障的系统,逐段进行检测分析,直查找到搅拌车故障点。
8. Section inspection. Section inspection of mixer is to detect and analyze the system suspected to have mixer fault section by section in fault diagnosis until the trouble point of mixer is found.
要做的就是断电,在断电之前要将点火开关关闭,同时还要关闭用电设备,比如音响等设备,禁止电器设备运行时突然断电。具体断电顺序如下:,所以在维修的时候要拔掉负极,再拔正极,安装的时候顺序是相反的,先装正极,后装负极。
The first thing to do is to cut off the power. Before the power is cut off, the ignition switch should be turned off. At the same time, the electrical equipment, such as audio equipment, should be turned off. The specific power-off sequence is as follows: safety first, so in maintenance, first pull out the negative pole, and then pull out the positive pole. When installing, the sequence is the opposite, first install the positive pole, then install the negative pole.
注意事项:
matters needing attention:
1、先拆正极存在烧坏电器元件的风险,容易引起电脑板烧毁的损失。在电路的实际维修过程中因违反操作规程,损坏电路和把手烧伤的人很多,因为蓄电池正负极短路电流非常大,能瞬间产生高温。
1. First remove the positive electrode, there is a risk of burning out the electrical components, which is easy to cause the loss of computer board. In the actual maintenance process of the circuit, there are many people who damage the circuit and burn the handle because of violating the operation rules. Because the short-circuit current of the positive and negative electrodes of the battery is very large, it can produce high temperature instantly.
2、如果先拔掉正极,因负极是搭铁的,也就是正极周围的金属车体都是负极,如果用工具拆卸正极接线时,工具碰到旁边的金属车体,就会造成蓄电池正负极短路。
2. If the positive pole is pulled out first, because the negative pole is grounded, that is, the metal body around the positive pole is all negative pole. If the tool touches the metal body beside the positive electrode when removing the positive connection with a tool, it will cause a short circuit between the positive and negative poles of the battery.
3、如果先拔掉负极,因负极周围的金属车体与负极是连通的,即使工具碰到也不会产生什么坏的结果,当负极拔掉后已经断电,再去拔正极就不会有什么危险了。
3. If you pull out the negative pole first, because the metal body around the negative pole is connected with the negative pole, even if the tool touches it, it will not produce any bad results. When the negative pole is pulled out and the power has been cut off, it will not be dangerous to pull the positive pole again.
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