iphone8p WeChat video does not send words
The front -line customer sent to the maintenance department an iPhone8p machine customer describes machine WeChat video voice normal call
After entering the water, you can’t go to the video to chat, please help the master to see it
Through the customer describing this iPhone8p machine failure, the water inlet causes normal video to chat with the water inlet machine.
1. First exclude external mating issues
2. Observe the corrosion of the motherboard and find that there is corrosion around the tail plug
3. Pick off the corrosive capacitor C6454 to measure this line is normal
4. C6454 This line is an insurance inductance FL6454 on this line of audio.
5. Installation Test machines can chat normally
iphone8p no 4G
Traveling to the maintenance department of the iPhone8p machine customer to describe the normal use of the machine before the machine, the power amplifier is replaced by 4G, the power amplifier is replaced by 4G
Through the customer describing this iPhone8p machine failure, after a heavy fall, the card that can be changed without 4G.
1. First use the schematic diagram to measure the working conditions of the baseband baseband power supply voltage clock reset, etc.
2. Through the measurement of the 38.4 clock virtual welding of the Y401E baseband power supply, the baseband power supply is not normalized
3. Reinstall the Y401E clock module
4. Last test machine 4G normal use