iPhone 6S Brush error 4013 fault repair

iPhone 6S Brush error 4013 fault repair

Machine model: iPhone6s
Fault symptom: fell, no response after startup,Update System reported error 4013.
The machine has fallen, sometimes it can be connected, and sometimes it can’t.

Fault machine figure 1.

Maintenance process:
Even the machine is not normal, and the driver is not displayed correctly. This phenomenon is usually CPU Inveracious Soldering. This machine has been dropped, and it is almost CPU Inveracious Soldering. After that, the CPU can be connected normally, and Update System reported an error of 4013.

Normal connection Figure 2.

As soon as the progress bar appeared, it reported an error of 4013.

iPhone 6S Brush error 4013 fault repair Figure 3.

iPhone 6S Brush error 4013 fault repair Figure 4.

iPhone s’ machine reported an error of 4013 as soon as the progress bar came out. Generally, it was Baseband. Remove Baseband, and it was Baseband.

iPhone 6S Brush error 4013 fault repair Figure 5.

iPhone 6S Brush error 4013 fault repair Figure 6.

Hang Logo(white apple)broken wires with pin and install the chip.Update System still reported error 4013. It seems that there is still a problem. Repeated tests in Update System found that S3, S4 and S5 Update System of Baseband instantly detected VCC, but S2 didn’t, and S2 was grounded. Is Baseband Update System broken? Remove the Baseband Update System chip and measure its pin bit by the way.It is found that 91 pin and 97 pin of Baseband VCC chip are not working. It seems that the problem has been solved. When Inductor is removed, it turns out that Inductor pin bit has dropped, the front side is good, and the reverse side is a pin.

schematic Figure 7.

Boardview Figure 8.

Boardview Figure 9.

iPhone 6S Brush error 4013 fault repair figure 10.

iPhone 6S Brush error 4013 fault repair Figure11.

Replace and put back his own original fingerprint Update System progress bar, and brushed it normally. At this point,iPhone 6s dropped Baseband pad break off, which caused Update System to report an error 4013, and the maintenance ended!