Multi-fault Maintenance of Huawei P10 Mobile Phone Headset Mode

Multi-fault Maintenance of Huawei P10 Mobile Phone Headset Mode

Huawei P10, fault description: it is damaged during normal use, unable to turn on the flashlight, unable to take photos, unable to wake up, mobile phone headset mode, unresponsive and other faults. Decisively disassemble the screen, deduct the fingerprint, test OK, and solve all the faults.

Model: Huawei P10

Malfunction: phone headset mode

Maintenance process:

A Huawei P10, the fault description is that it is damaged during normal use, unable to turn on the flashlight, cannot take photos, cannot wake up, the headset mode of the mobile phone, and is unresponsive. Starting from the headset mode, the failure of removing the tail plug-in panel remains the same.

Huawei P10 Mobile Phone Headset Mode Multi-fault Maintenance Figure 1

Here, the inductance is the inductance of the earphone detection channel, and the resistance value is normal. Continue to check the IC of the earphone in the future, and the fault remains the same after replacement.

Huawei P10 mobile phone headset mode multi-fault maintenance Figure 2

Check that the working conditions are normal, but it still doesn’t work after installation.

Huawei P10 mobile phone headset mode multi-fault maintenance Figure 3

After installing the screen, it was found that there was no PP3V3 voltage. By checking the bitmap, it was found that this PP3V3 also led to the screen.

Huawei P10 mobile phone headset mode multi-fault maintenance Figure 4

Looking at the schematic diagram, it is found that this 3V3 also supplies power to fingerprints.

Huawei P10 Mobile Phone Headset Mode Multi-fault Maintenance Figure 5

Decisively disassemble the screen, deduct the fingerprint, test OK, and solve all the faults.

Huawei P10 mobile phone headset mode multi-fault maintenance Figure 6

Because the fingerprint is on the cover plate, the cover plate has been replaced.