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IPhone XS mobile phone touch failure repair
The touch of iPhone XS phone failed. After measurement, it was found that there was a line with a resistance value of OL, that is, the line was disconnected. Because the line is connected to the middle layer, the motherboard can only be layered. After layering, the disconnected line can be repaired, and then attached back to the motherboard for fault repair.
Machine model: iPhone XS
Malfunction: touch failure of mobile phone.
Maintenance process:
An iPhone XS, the fault is the touch failure of the mobile phone. This fault is generally an abnormality in the touch circuit. First, replace the test screen for testing. If the fault remains, the fault is on the motherboard. Open Xinzhizhao software, find the component annotation diagram of iPhone XS, open the dot bitmap of Huawei iPhone XS, and find the touch connection seat.
IPhone XS mobile phone touch failure maintenance figure 1
IPhone XS mobile phone touch failure maintenance figure 2
Measure the resistance value of each pin, and refer to the resistance data of the point bitmap. If the actual measured resistance value differs greatly from the reference value, it proves that the connected components of the line work abnormally or are damaged.
IPhone XS mobile phone touch failure maintenance figure 3
After measurement, it is found that the resistance value of one line is OL, that is, the line has been disconnected. Because the line is connected to the middle layer, the motherboard can only be layered. After layering, the disconnected line can be repaired, and then attached back to the motherboard for fault repair.
