Table Of Contents - Huawei MediaPad 7 Lite S7-931w Maintenance Manual

Table of Contents

1 Product Overview ......................................................................................................................... 5

1.1 Appearance ....................................................................................................................................................... 5

1.2 Product Models ................................................................................................................................................ 5

1.3 Product Features ............................................................................................................................................... 6

2 Maintenance Instructions ............................................................................................................ 8

2.1 Applicable Scope .............................................................................................................................................. 8

2.2 Precautions ....................................................................................................................................................... 9

2.3 Obtaining Product and Maintenance Information ............................................................................................ 9

3 Explosive View Drawing ........................................................................................................... 10

4 PCBA Components ..................................................................................................................... 11

4.1 Components on the PCBA ............................................................................................................................. 11

4.2 BOM List ....................................................................................................................................................... 12

5 Software Upgrade ....................................................................................................................... 16

5.1 Upgrade Environment .................................................................................................................................... 16

5.2 Upgrade Using a microSD Card ..................................................................................................................... 16

5.2.1 Copying the Upgrade File from the Computer ...................................................................................... 16

5.3 Upgrade Process ............................................................................................................................................. 17

5.4 Troubleshooting .............................................................................................................................................. 18

6 Upgrading Using the USB ......................................................................................................... 19

6.1 Entering USB Upgrade Mode ........................................................................................................................ 19

6.2 Installing the Driver ....................................................................................................................................... 19

6.3 Batch Firmware Upgrade ............................................................................................................................... 22

7 Maintenance Tools ...................................................................................................................... 24

8 Disassembly Procedure .............................................................................................................. 26

9 Troubleshooting for Common Failures .................................................................................. 35

9.1 Principle ......................................................................................................................................................... 35

9.2 Startup Failure ................................................................................................................................................ 37

9.2.1 Startup Failure Due to High Current ..................................................................................................... 37

9.2.2 Startup Failure Due to Low Current ...................................................................................................... 40

9.3 Charge Failure ................................................................................................................................................ 41

2012-10-08

MediaPad 7 Lite Maintenance Manual

Huawei Confidential

INTERNAL

Contents

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