维修工具的使用方法与技巧（How to use maintenance tools）.docVIP

维修工具的使用方法与技巧（How to use maintenance tools） Using methods and skills of maintenance tools for PHS mobile phone A hot air gun, air gun is a glossary of chip components desoldering, welding tools section welding tool and welding techniques of PHS mobile phone, which is mainly composed of a circuit board, air pump, linear stabilizer, shell, handle component. The hot air gun with better performance has the characteristics of small noise and steady airflow, and the airflow is large, generally 27L / min. Good hot air guns such as QUICK 980A, it uses the original pump, the original linear circuit board to adjust the standard temperature (air adjustment curve), so as to obtain uniform and stable heat, air, the air gun handle assembly by eliminating electrostatic materials, can effectively prevent electrostatic interference. Caution and emphasis on the use of adhesive multilayer printed circuit boards for PHS handsets. Special attention shall be paid to access holes during welding and disassembly, and PCB and access holes shall be avoided. The replacement of components, should avoid high temperature welding some CMOS (complementary metal oxide semiconductor) element of electrostatic or high pressure especially sensitive and easily damaged, and the damage is potential, in a few weeks or months will be shown, so this kind of element in the demolition, must be in the working table with grounding in general, grounding resistance should be below 10Q. In fact, the best way to prevent static induction is that maintenance personnel should wear conductive gloves, do not wear easy to wear electrostatic clothing. Two, the electric irons and QUICK 980A hot air gun keep pace with another kind of maintenance tool is QUICK969 type electric iron, QUICK969 type electric iron has antistatic and thermoregulation function. QuICK969 type electric iron is mainly used for welding, and its use is as follows: (1) the electric iron power plug into the power socket, turn on the electric iron power swit