Here is the high voltage testing of the adapter of phone

 Here is the high voltage testing of the adapter of phone .
More of these methods with which the digital mobile phone repair in the early, early phone chip or font, and more easily taken down to read and write, but because most of the recent production of mobile phones font for the BGA package, and inconvenient to take down. Manufacturers are also software has taken the appropriate encryption measures, so that some mobile phone chip or font can not be removed to read and write, making this approach has limitations, will gradually be abandoned. Software maintenance free computer Free disassemble software instrument. Software disorder caused by this type of failure, such as "phone lock" in which software failure data can be resolved as long as the processing chip and software, the amount of data using a simple microcontroller can handle. Drop test of the adapter of phone : after the drop test, the shell has no breaking, plug has no looseness or falling and the electrical performance is normal.
However, due to the font large amount of data, using this method of single-chip will not be able to meet the requirements, so little used software failures caused by handling font. The advantage of this method is simple to operate, do not need to disassemble. The disadvantage is that the MCU function of the lack of home memory capacity is limited, can only deal with simple faults. Shown in Figure 4-3-2 is for DTC4 string free computer Free disassemble software maintenance instrument. Free disassemble software instrument with a computer method for software maintenance. The memory data capacity is too large and the BGA package, so the previous two methods are not a good solution to the problem. Increased storage capacity, preferably with the help of computer. High voltage test of the adapter of phone should be implemented through test with the dielectric strength tester.  Without removal of the font, the best free disassemble the external data interface of the mobile phone to mobile phone software repair. This method is with a computer-free disassemble software maintenance methods, more of which in the recent mobile phone repair. The characteristic of this method is: on the one hand will save the mobile phone software information into the computer, the large capacity of computer memory, it can be a large number of mobile phone software data are stored in; the other hand, the use of external data interface of the mobile phone with the appropriate driver, phone and computer connections can be carried out with the communications, software data from the PC to the phone software repair. The adapter of phone freely falls from directions to the floor at 1m high for three times to complete the drop test.So phone can be easily and conveniently charged after plugging in the charger
Computer free disassemble software troubleshooting instrument, but most of the mobile data software is stored in a computer through RS232 interface with mobile phones to communicate through the computer serial port output.