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iPhone 7 phone fingerprint does not respond to repair
Machine model: iPhone 7
Malfunction: mobile phone fingerprint is not responding.
Maintenance process: boot detection, found that fingerprint was grayed out in the open setting, and solved the Accessories problem. Measure fingerprint BTB connector diode value by disassembling the machine.
iPhone 7 phone fingerprint does not respond to repair Figure 1.
iPhone 7 phone fingerprint does not respond to repair Figure 2.
iPhone 7 Mobile phone fingerprint doesn’t respond. Maintenance Figure 3.
It was found that the SPI bus from CPU to fingerprint BTB connector was disconnected, and the motherboard was UMT. Fortunately, this signal went through FL3807 Inductor to CPU without disconnection, and went directly to Jump wire to fingerprint fingerprint 14401.
iPhone 7 phone fingerprint does not respond to repair Figure 4.
iPhone 7 phone fingerprint does not respond to repair Figure 5.
iPhone 7 phone fingerprint does not respond to repair Figure 6.
Boot the system, and the test is normal.
iPhone 7 phone fingerprint does not respond to repair Figure 7.
