Name: Huawei Ascend
Brand: Huawei
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Y210 Mobile Phone

Maintenance Manual

Contents

Issue 1.0 (2012-11-28)

Huawei Proprietary and Confidential

iii

Contents

About This Document .................................................................................................................... ii

1 Product Overview ......................................................................................................................... 1

1.1 Appearance ....................................................................................................................................................... 1

1.2 Features ............................................................................................................................................................ 2

2 Applicable Scope and Precautions ............................................................................................ 4

2.1 Applicable Scope .............................................................................................................................................. 4

2.2 Precautions ....................................................................................................................................................... 4

2.3 How to Obtain Product and Repair Information .............................................................................................. 4

3 Exploded View............................................................................................................................... 5

4 Components on the PCBA ........................................................................................................... 7

5 Software Upgrade ......................................................................................................................... 9

5.1 Upgrade Preparation ......................................................................................................................................... 9

5.2 Performing an Upgrade .................................................................................................................................... 9

6 Maintenance Tools ...................................................................................................................... 11

7 Disassembly Procedure .............................................................................................................. 13

8 Assembly Procedure ................................................................................................................... 17

9 Principles and Failure Analysis ............................................................................................... 21

9.1 Block Diagram ............................................................................................................................................... 21

9.1.1 Functions of the PCBA ......................................................................................................................... 22

9.2 Baseband Unit ................................................................................................................................................ 26

9.2.1 Power-on Management Circuits ............................................................................................................ 26

9.2.2 Charging Management Circuits ............................................................................................................ 30

9.3 RF Unit ........................................................................................................................................................... 31

9.3.1 RF Failure ............................................................................................................................................. 31

9.3.2 GPS ....................................................................................................................................................... 35

9.3.3 Wi-Fi/Bluetooth/FM Module ................................................................................................................ 35

9.4 Peripheral Circuits .......................................................................................................................................... 37

9.4.1 Display .................................................................................................................................................. 37

9.4.2 Camera .................................................................................................................................................. 40