iPhone Tutorial: Home Button and Fingerprint Repair

iPhone home button and fingerprint is one of the parts that is easy to get damaged, if the parts don't work, you'll be unable to enter the cell phone home page, it's really annoying if you hold your phone but you can never use it. How to solve the problem? the iPhone tutorial for iPhone home button and fingerprint repair will offer you the best solution.

Open the WUXINJI Dongle will be the first step to repair the problems,

1. How to repair iPhone 7/7P home button?

The home button power supply schematic diagram is as follows:

The power supply pipe U3801 output PP2V75_MAMBA(275V) to J3801, iPhone power IC output PP1V8_TOUCH(1.8V) , through resistance R3805, final to J38011.

If these two circuit power supply is abnormal, it will cause iPhone home button failure. For repairing this problem, check short connection R3805, and then you can replace the U3801 or disassemble the U3801, and then use PPD 861D Plus hot air rework station to weld the jump wire from C3813 to C3823.

Tips:

PP3V0_MESA(3.0V), PP1V8_MESA(1.8V), PP2V75_MAMBA(2.75V) and PP1V8_TOUCH(1.8V), this four circuits voltage can be tested by pressing the iPhone power button.

2. How to Repair iPhone 7/7P fingerprint

The fingerprint power supply schematic diagram is as follows:

The iPhone power IC output PP3V0_MESA(3.0V) PP1V8_MESA(1.8V) respectively through inductance FL3803 and FL3801, next send it to interface J3801; the iPhone power supply IC-- U3702 output PP16V0_MESA(16.0V), after inductance FL3802 delivers to the interface U3801.

If these three circuits power supply is abnormal, it will cause iPhone fingerprint failure. In order to fix it, you can check the short connection FL3803, FL3801 and FL3802, use Precision Titanium Alloy Tweezers to replace the U3702. Get more details about cell phone repair tutorials on www.vipfixphone.com