1. Investigation, then familiarization
When a failure machine is sent by a user, it is first necessary to ask about the pre- and post-facility of the failure, as well as about the failure, just as the patient is treated by a doctor. Based on the information and leads provided by the users, further analytical studies of the circuits will be undertaken in a serious manner. This is particularly important for beginners) to understand the principles of their circuits and the role of metrware, so that they can be counted and targeted。
Two, inside, behind
In the case of malfunctions, the external parts of the aircraft should be checked, in particular some switches outside the aircraft, the proper position of the knobs, external lead lines, any break-up of the plugs, short-circuit phenomena, etc. When it is confirmed that the external parts of the machine are normal, the machine is opened for inspection。
3 - mechanical, electrical
See if the failure was caused by a friend's mechanical condition or by electrical problems. Electrical inspections are carried out only when it has been determined that the departmental transformer is functional. Maintenance of household electricity
Four, static, then dynamic
The so-called static inspections are those carried out before the machines are powered. A dynamic check may only be carried out by electricity when the static inspection is confirmed. In the event of abnormalities such as smoke and scintillation, the device should be shut down quickly and the static check should be re-examined. This would avoid the powering of machines in the event of uncertainty, causing undue damage。
5 - clean up, then overhaul
When inspecting the interior of the machine, emphasis should be placed on whether the interior is clean, and if dust, stains, spider webs or extra welding, welding, etc. Are found between the inner parts of the machine, lead wires, walk wires, etc., they should be removed and then repaired so as to reduce natural malfunctions and achieve half-wired effects. It has been shown that many of the malfunctions are caused by contamination and tend to disappear automatically when clean-up failures occur。
