自动伸缩门的电路控制系统主要包括：操作按键盒,以CPU为核心的控制主板,遥控器及一些传感器构成的检测控制电路等。在伸缩门的维修中常用的基本方法可概括为：一问、二看、三听、四摸、五测，下面详细介绍一下：

The circuit control system of the automatic retractable door mainly includes: operation button box, control motherboard with CPU as the core, detection and control circuit composed of remote control and some sensors. The basic methods commonly used in the maintenance of retractable doors can be summarized as: first asking, second looking, third listening, fourth touching, and fifth testing. The following is a detailed introduction:

一问：即技术工作人员询问,在与客户沟通时,先问清机型，品名，损坏原因，故障现象，再据此详细分析，以便做到有的放矢，对症下药，少走弯路。主要询问的内容有：何时损坏，是否浸水，是否受过撞击，是否电压过高，是否有人改动，是否操作不当，是否遭受雷击，是否有冒烟现象，是否有异常响声等。只有在问明原因后,才能确定下一步的检修方法及处理措施。对于雷击、浸水、冒烟、烧保险等故障机型,切不可贸然通电试机,否则将造成机器再次受创、故障扩大。

One question: When technical staff inquire with customers, they first inquire about the model, product name, cause of damage, and fault phenomenon, and then analyze them in detail based on this, in order to achieve targeted treatment and avoid detours. The main inquiries include: when it was damaged, whether it was submerged in water, whether it was hit, whether the voltage was too high, whether it was tampered with by someone, whether it was operated improperly, whether it was struck by lightning, whether there was smoking, whether there were abnormal noises, etc. Only after clarifying the cause can the next maintenance method and handling measures be determined. For faulty models such as lightning strikes, flooding, smoking, and burning insurance, do not rashly turn on the power for testing, otherwise it will cause the machine to be damaged again and the fault will expand.

二看：即观察,打开伸缩门控制外壳后,应仔细查看电路板上是否有元件受损。如元件断裂、发黑发黄、引脚相碰、器件松动、连线错误等。有经验的维修人员会根据用户提供的相关信息及故障现象,准确地察看伸缩门可疑部位,麻利地找出故障所在。某些接触不良的故障,可在光线较暗处观察可疑部件是否有火花产生来确定。

Second observation: After opening the telescopic door control housing, carefully check whether there are any components damaged on the circuit board. Such as component breakage, black and yellow hair, pin collisions, loose components, and incorrect wiring. Experienced maintenance personnel will accurately inspect the suspicious parts of the telescopic door based on the relevant information and fault symptoms provided by the user, and quickly identify the location of the fault. Some faults with poor contact can be determined by observing suspicious components in dimly lit areas for spark generation.

三听：即听声,在控制系统中,大都采用了电磁继电器作为控制器件,在继电器触点切换时会产生清晰的'滴哒'声。如无声或异常,在确定继电器驱动电器无故障后,可判定该继电器不良。

Three listening: namely listening, in control systems, electromagnetic relays are mostly used as control devices, which will produce a clear "beeping" sound when the relay contacts switch. If there is no sound or abnormality, it can be determined that the relay is faulty after confirming that there is no fault in the relay driving device.

四摸：即触摸,在伸缩门的维修过程中,也经常在通电后用手摸(鼻嗅)某些元件。如稳压IC等集成器件、防雷管、 变压器、驱动二极管等等,以便感觉其温度是否正常,如发热快、温度高、电路无短路故障则可断定器件不良(注意：对于高电压的元件如可控硅、高压区的元器件,应通电一段时间再断电后迅速触摸,切勿通电时触摸,避免触电事故)。

Four touch: That is, touch. During the maintenance process of the retractable door, it is also common to touch (sniff) certain components with your hands after power on. Integrated devices such as voltage stabilizing ICs, lightning protection tubes, transformers, drive diodes, etc. can be used to check whether their temperature is normal. If the heating is fast, the temperature is high, and there is no short circuit fault in the circuit, it can be determined that the device is faulty (note: for high-voltage components such as thyristors and high-voltage components, they should be powered on for a period of time and then quickly touched after power off. Do not touch them when powered on to avoid electric shock accidents).

五测：即测量,指使用表拧到合适档位,对控制电路进行相关测量。通常采用的方式有测电压、测电路的电阻、测电流等。这是一种综合性逻辑分析手段,可依据各种测量电动伸缩门的数据准确的找出故障原因及损坏器件。

Five measurements: namely measurement, refers to using a multimeter to turn to the appropriate gear and perform relevant measurements on the control circuit. The commonly used methods include voltage measurement, circuit resistance measurement, current measurement, etc. This is a comprehensive logical analysis method that can accurately identify the cause of faults and damaged components based on various measurements of electric retractable doors.

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