Very complex and unknown secrets in fault detection and repair in electronic devices there is no. What is necessary to find and correct the fault is a certain method. It is the use of the information you have learned within the framework of logic. The devices produced today The repair has become quite difficult. This is due to the micro without spare parts of the devices is made of electronic materials. Fault detection is performed on such devices; However, repair may not be possible. Faulting pressure for relieving such faults It is replaced with the circuit card intact or the device is renewed. Before starting the fault detection and repair of electronic devices, you must be static. It is necessary to take precautions against electricity. As it is known, the electricity formed by friction of two objects It is called static electricity. For example, while removing the dress on us, walking or our hair Static electricity may occur in our body when scanning. This amount of static electricity formed is in the air Depending on the amount of moisture, it varies between 100 volts and 35000 volts. As the amount of moisture increases The amount of static electricity decreases. Although the voltage value is high in static electricity, current The value is small. The small current value means that the voltage will not be ineffective. does not come. For example, when a person walks on the carpet, approximately 4000 volts ’ The electricity is stored. This person has a mosfet with a threshold voltage of 100 volts or 250 volts. It will fail when it touches the CMOS with the threshold voltage. That people are uploaded Due to static electricity, many devices are damaged. Especially eeprom (electrically There are memory integrateds such as wiped and programmed alone. Very sensitivity should be shown in the malfunction detection and repair of the devices. Fault detection and repair Antistatic materials should be used in the operations. Antistatic materials of static electricity They are materials that prevent the formation of electronic circuit elements. That Materials can be shown as an example of anti -static materials: metallic bags, packaging Foams, tablecloths/coatings, anti -static bracelet cord and cable, anti static The aprons and shoes are not always electronic. With this Mechanical faults, loose or missing screws, worn parts, broken or poorly connected Cables may cause faults on devices. First of all, one of the easy ones in fault detection should be started. For example, starting from the supply voltage of the device to the output values Measurements should be made and the problem should be tried to emerge clearly. Device Document, catalogs or schemes should be used. Defective circuit during repair It is not always possible to replace the elements with the same. In this case another Elements of the same feature produced by the companies can be preferred. Repair of the device After completing, it must be employed and kept under observation for a certain period of time. At the end of this course, the information and skills you will obtain and the malfunction detection of navigation devices You will be able to make and produce solutions for repair.
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