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iPhone6 Plus phone boot does not display fault repair
Machine model: iPhone 6 Plus
Fault description:
After the iPhone 6 Plus fell down, the customer took it to another home to repair it. They told the customer that the board no booting could not be repaired and the screen was broken.After the machine was sent here, the Connect the power supply source was turned on, and the power on current was normal. After changing the screen, the no display did not respond.
iPhone6 Plus phone boot does not display fault repair Figure 1.
iPhone6 Plus phone boot does not display fault repair Figure 2.
Carefully check the motherboard, peer removed the CPU, shielding cover, touch IC, coder IC are not installed.Organize ideas, text boring, directly above.
iPhone6 Plus phone boot does not display fault repair Figure 3.
This machine shows that BTB connector correlation is normal without boot6.0v.Remove the display IC and find reset_1V8_L and chestnut_TO_PMU_Acdin7 two pin have no value, Jump wire is required.
iPhone6 Plus phone boot does not display fault repair Figure 4.
Remove PMU and check PAD.
iPhone6 Plus phone boot does not display fault repair Figure 5.
iPhone6 Plus phone boot does not display fault repair figure 6.
It is found that both signals can be outside the chip Jump wire, as shown in the figure:
iPhone6 Plus phone boot does not display fault repair Figure 7.
iPhone6 Plus phone boot does not display fault repair Figure 8.
The next step is manual work.
iPhone6 Plus phone boot does not display fault repair figure 9.
iPhone6 Plus phone boot does not display fault repair Figure 10.
Previously repaired iPhone6 Plus Mobile no display No Response Troubleshooting Figure 11.
Previously repaired iPhone6 Plus mobile phone no display no response failure maintenance Figure 12.
The boot test is OK. At this point, the iPhone6 Plus mobile phone no display has no response, and the maintenance is over.
Previously repaired iPhone6 Plus mobile phone no display no response failure maintenance Figure 13.
