iPhone 6 Update System error report 56 repair

iPhone 6 Update System reported an error of 56 from pp3124_RF directly Jump wire to D2 pin after the fault repair.

iPhone 6 Update System error report 56 repair

Machine model:iPhone 6

Fault phenomenon:Update System error 56

Fault analysis:Update System error 56 is mostly caused by NFC chip.

Maintenance process: remove the main NFC chip u5301_diode value rcuits from XTRF to CPU are measured.

iPhone 6 Update System error report 56 repair

iPhone 6 Update System error report 56 maintenance Figure 1.

It was found that D2 pin data transmitted Measuring diode value OverLoad, and the CPU was disconnected.

iPhone 6 Update System error report 56 repair

iPhone 6 Update System error report 56 maintenance Figure 2.

iPhone 6 Update System error report 56 repair

iPhone 6 Update System error report 56 maintenance Figure 3.

3. The line from D2 pin to CPU has a test point pp3124_RF, when measuring diode value of this test point, it is found that Measuring diode value is normal, so you can directly Jump wire to D2 pin from this test point.

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iPhone 6 Update System error report 56 maintenance Figure 4.

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iPhone 6 Update System error report 56 Figure 5.

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iPhone 6 Update System error report 56 maintenance Figure 6.

Fly the wire and install the NFC core (the wire used must be enameled wire to avoid Short circuit).

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iPhone 6 Update System error report 56 maintenance Figure 7.

Enter Recovery mode,Update System,Update System passes, and the maintenance is finished.

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iPhone 6 Update System error report 56 maintenance figure 8.