1.1 Product Introduction ......................................................................................................................................... 6
1.2 Product Specifications ...................................................................................................................................... 6
2.1 Block Diagram ................................................................................................................................................. 8
2.2 Module Functions ............................................................................................................................................. 8
3.1 Root Detection Instructions ............................................................................................................................ 15
3.2 Software Update Guide .................................................................................................................................. 17
3.2.1 Updating a Rooted Phone ..................................................................................................................... 17
3.3 Software Log Tool .......................................................................................................................................... 20
3.3.1 Log Tool ................................................................................................................................................ 20
4 Troubleshooting .......................................................................................................................... 22
4.1 Charging Failure ............................................................................................................................................. 22
4.1.1 Maintenance Process ............................................................................................................................. 22
4.1.2 Maintenance Principle........................................................................................................................... 23
4.2 SIM Card Detection Failure ........................................................................................................................... 25
4.2.1 Maintenance Process ............................................................................................................................. 25
4.3 LCD Failure ................................................................................................................................................... 27
4.3.1 Maintenance Process ............................................................................................................................. 27
4.3.2 Maintenance Principle........................................................................................................................... 28
4.4 Touchscreen Failure ....................................................................................................................................... 29
4.4.1 Maintenance Process ............................................................................................................................. 29
4.4.2 Maintenance Principle........................................................................................................................... 30
4.5.1 Maintenance Process ............................................................................................................................. 31
4.5.2 Maintenance Principle........................................................................................................................... 32
4.6 Accelerometer Failure .................................................................................................................................... 33
2019-6-25
EML-L29V100R001 Advanced Maintenance Manual V2.1
Contents
Huawei Confidential
INTERNAL
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