The iPhone 7P displays the iTunes icon, and when it connects to the computer for recovery, it reports error 56. When it reaches 80%, the error code is the same as the previous model, usually caused by camera power and NFC.
The resistance of each circuit power source of the camera is not abnormal. Checking the NFC section has a common fault in iPhone 7P. The NFC power supply can connect the short circuit at the upper left corner of the CPU.
Short A1 and A2 pins in the NFC power supply tube, then restore to short after the test connection. This iPhone 7P is still unable to pass, so we can only take NFC to test.
It is no problem to test the resistance of the socket by Fluke digital multimeter, reball the NFC module with iPhone BGA reballing stencil, install the NFC module and restore the phone after installation, but the mobile phone does not carry out the second self-examination and jump to iTunes, computer display recovery mode. There was no such situation before, so the first thing was to go out and exclude it. In order to prevent the external device from entering iTunes directly in the case of short circuit, when the computer exits the recovery mode, the iPhone volume flex cable and the tail plug flex cable interface are still not touched.
It's not expected that would happen elsewhere. The system is up-to-date, just choosing to keep the data to recover the machine, then discussing with the customer, deciding on a new reflection, without keeping the data, and consequently accessing the activation interface normally.
This 7P brush machine 56 error is due to NFC module virtual welding, keep the data on the phone does not enter the system, this is due to the original system there are damaged files.
If you want to get more details, check on www.vipfixphone.com
The resistance of each circuit power source of the camera is not abnormal. Checking the NFC section has a common fault in iPhone 7P. The NFC power supply can connect the short circuit at the upper left corner of the CPU.
Short A1 and A2 pins in the NFC power supply tube, then restore to short after the test connection. This iPhone 7P is still unable to pass, so we can only take NFC to test.
It is no problem to test the resistance of the socket by Fluke digital multimeter, reball the NFC module with iPhone BGA reballing stencil, install the NFC module and restore the phone after installation, but the mobile phone does not carry out the second self-examination and jump to iTunes, computer display recovery mode. There was no such situation before, so the first thing was to go out and exclude it. In order to prevent the external device from entering iTunes directly in the case of short circuit, when the computer exits the recovery mode, the iPhone volume flex cable and the tail plug flex cable interface are still not touched.
It's not expected that would happen elsewhere. The system is up-to-date, just choosing to keep the data to recover the machine, then discussing with the customer, deciding on a new reflection, without keeping the data, and consequently accessing the activation interface normally.
This 7P brush machine 56 error is due to NFC module virtual welding, keep the data on the phone does not enter the system, this is due to the original system there are damaged files.
If you want to get more details, check on www.vipfixphone.com
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