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iPhone6 Plus fingerprint can’t identify the fault repair
Machine model: iPhone6 Plus
Fault symptom: mobile phone fingerprint can’t distinguish.
iPhone6 Plus fingerprint can’t identify the fault repair figure 1.
Maintenance process: first, replace a screen assembly, test fingerprint is still gray, and eliminate FPC problem. Under the microscope of the mainboard, the components around the display stand have been passive. Call diode value of fingerprint BTB connector and find that the 12th pin AP_TO_MESA_SPI_MOSI _ conn to AP _ to _ mesa _ SPI _ mosi is disconnected.
iPhone6 Plus fingerprint can’t identify the fault repair figure 2.
There is an Fuse Inductor in the middle, and both ends of the Fuse Inductor are OL. Look at it again with tweezers and the result is dropped. It turns out that Fuse Inductor Inveracious Soldering was dropped, and then the peripheral components of Fuse were dropped. It is suspected that Inveracious Soldering was blown last time.
iPhone6 Plus fingerprint can’t identify the fault repair figure 3.
iPhone6 Plus fingerprint can’t identify the fault repair figure 4.
Make up the missing components, and then measure BTB connector diode value. All of them are normal. The installation test fingerprint can be opened, and the input is normal.
iPhone6 Plus fingerprint can’t identify the fault repair figure 5.
All functions are normal, and maintenance is over.
