How to repair iPhone 5 can not charge？
We received an iPhone 5 and the customer said that his iPhone 5 charging was faulty. The customer cannot charge. This question is very annoying. How can we fix it?
The charging part of the iPhone 5 consists of Q2, U2 and U7. The circuit diagram of charging port J7 can be queried on the WUXINJI dongle. As shown in picture.
The 5V voltage from the tail plug sends two 5V power supplies through Q2. PP5V0_USB_PROTECT and PP5V0_USB_RPROT are sent to U7 and U2 respectively
In addition, there are two detection pin in the middle of the battery contact J6! they pass through FL10, FL11 respectively and send to power IC-U7, FL10, FL11, in actual cell phone repair, it is found that the 2 pins are very easy to fall off, causing the cell phone can not be charged! and keep reboot again and again!
If there is a problem of charging, plug in the data cable, use Fluke digital multimeter to measure whether C304 has 5V output, and measure whether C272 has 5V output.
If not, you need to test the iPhone 5 charging port flex cable, short connect the Q2.
If both of them can be measured 5V, then the problem is in U2 or U7.
In addition, the battery detection pin problem will cause abnormal charging, the more charging, the less battery power will be, and also there will be automatic restart fault.
If you have any questions or suggestions, please contact us at www.vipfixphone.com.
The charging part of the iPhone 5 consists of Q2, U2 and U7. The circuit diagram of charging port J7 can be queried on the WUXINJI dongle. As shown in picture.
The 5V voltage from the tail plug sends two 5V power supplies through Q2. PP5V0_USB_PROTECT and PP5V0_USB_RPROT are sent to U7 and U2 respectively
In addition, there are two detection pin in the middle of the battery contact J6! they pass through FL10, FL11 respectively and send to power IC-U7, FL10, FL11, in actual cell phone repair, it is found that the 2 pins are very easy to fall off, causing the cell phone can not be charged! and keep reboot again and again!
If there is a problem of charging, plug in the data cable, use Fluke digital multimeter to measure whether C304 has 5V output, and measure whether C272 has 5V output.
If not, you need to test the iPhone 5 charging port flex cable, short connect the Q2.
If both of them can be measured 5V, then the problem is in U2 or U7.
In addition, the battery detection pin problem will cause abnormal charging, the more charging, the less battery power will be, and also there will be automatic restart fault.
If you have any questions or suggestions, please contact us at www.vipfixphone.com.
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