Huawei Honor U8860 User manual

U8860

Maintenance Manual

Issue

1.0

Date

2011-11-14

HUAWEI TECHNOLOGIES CO., LTD.

Issue 1.0 (2011-11-14)

Huawei Proprietary and Confidential

No part of this document may be reproduced or transmitted in any form or by any means without prior

written consent of Huawei Technologies Co., Ltd.

Trademarks and Permissions

and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.

All other trademarks and trade names mentioned in this document are the property of their respective

holders.

Notice

The purchased products, services and features are stipulated by the contract made between Huawei and

the customer. All or part of the products, services and features described in this document may not be

within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements,

information, and recommendations in this document are provided "AS IS" without warranties, guarantees or

representations of any kind, either express or implied.

The information in this document is subject to change without notice. Every effort has been made in the

preparation of this document to ensure accuracy of the contents, but all statements, information, and

recommendations in this document do not constitute a warranty of any kind, express or implied.

Huawei Technologies Co., Ltd.

Address:

Huawei Industrial Base

Bantian, Longgang

Shenzhen 518129

People's Republic of China

Website:

http://www.huawei.com

Email:

[email protected]

U8860

Maintenance Manual

About This Document

Issue 1.0 (2011-11-14)

Huawei Proprietary and Confidential

About This Document

Author

Prepared by

R&D

Date

2011-11-12

Reviewed by

Maintenance support engineer

Date

2011-11-14

Approved by

Service representative

Date

2011-11-14

Change History

Date

Version

Change Reason

Revised

Chapter

Description

Author

2011-11-12

V1.0

Released the first issue.

R&D

U8860

Maintenance Manual

Contents

Issue 1.0 (2011-11-14)

Huawei Proprietary and Confidential

iii

Contents

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

1 Product Introduction ....................................................................................................................1

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

1.2 Specifications...................................................................................................................................................1

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

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

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

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

3 Explosive View ..............................................................................................................................5

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

5 Software Upgrade .......................................................................................................................13

5.1 Upgrade Preparation.......................................................................................................................................13

5.2 Normal Upgrade.............................................................................................................................................13

5.3 Troubleshooting..............................................................................................................................................14

6 Maintenance Tools......................................................................................................................15

7 Disassembly Procedure..............................................................................................................17

8 Assembly Procedure ...................................................................................................................25

9 Principles and Troubleshooting...............................................................................................28

9.1 Block Diagram and Phone Introduction.........................................................................................................29

9.2 Baseband Unit................................................................................................................................................33

9.2.1 Power-on Management Circuits............................................................................................................33

9.2.2 Charging Management Circuits ............................................................................................................37

9.2.3 Clock Circuit.........................................................................................................................................39

9.2.4 Flash Memory Circuit...........................................................................................................................40

9.3 RF Unit...........................................................................................................................................................41

9.4 Peripheral Circuits..........................................................................................................................................44

9.4.1 Display..................................................................................................................................................44

9.4.2 Keypads ................................................................................................................................................46

9.4.3 Vibration ...............................................................................................................................................48

U8860

Maintenance Manual

Contents

Issue 1.0 (2011-11-14)

Huawei Proprietary and Confidential

9.4.4 Call Reception.......................................................................................................................................49

9.4.5 Call Transmission..................................................................................................................................50

9.4.6 Headphone ............................................................................................................................................52

9.4.7 SIM Card...............................................................................................................................................54

9.4.8 I/O Connector........................................................................................................................................56

9.4.9 microSD Card Connector......................................................................................................................57

9.4.10 Camera................................................................................................................................................58

9.4.11 BT&WiFi ............................................................................................................................................61

9.4.12 Accelerometer .....................................................................................................................................64

9.4.13 Compass..............................................................................................................................................66

9.4.14 Gyroscope ...........................................................................................................................................68

9.4.15 Touch Panel.........................................................................................................................................69

9.4.16 Approach Sensor.................................................................................................................................72

10 Solder Points on the PCB and BGA Chip.............................................................................75

11 Functional Tests.........................................................................................................................80

11.1 Keys..............................................................................................................................................................80

11.2 MMI Test......................................................................................................................................................81

11.3 Voice Call Test..............................................................................................................................................83

U8860

Maintenance Manual

1 Product Introduction

Issue 1.0 (2011-11-14)

Huawei Proprietary and Confidential

1 Product Introduction

1.1 Appearance

1.2 Specifications

Item

Descriptions

Dimensions (H x W x D)

122 mm x 61.5 mm x 10.9 mm

U8860

Maintenance Manual

1 Product Introduction

Issue 1.0 (2011-11-14)

Huawei Proprietary and Confidential

Item

Descriptions

Technical standard

WCDMA/HSDPA/HSUPA: 3GPP FDD Release 7

Band

WCDMA: 2100 MHz/900 MHz

GSM: 850 MHz/900 MHz/1800 MHz/1900 MHz

Weight

About 140 g with battery

Appearance

Bar

Antenna

Built-in

SIM/USIM

Standard 6-pin SIM card, supporting 1.8 /3 V USIM card

Charger

5 V, 1 A

Battery

1930 mAh

standby time: 380 hours (3G)

Talk time: 400 minutes (3G)

Camera

Primary Camera

8 MP AF HD

Secondary camera

0.3 MP FF

Display

Resolution

854 x 480 (FWVGA)

Type

TFT-LCD

Color

16 M

Size

4.0 inch

Connectors

Charger port

Micro-USB connector

USB port

Micro-USB connector

MicroSD

MicroSD card (up to 32 GB)

Headphone jack

3.5 mm

Bluetooth

V2.1 + EDR

WiFi

802.11 b/g/n, supporting WiFi

USB

USB 2.0,480 Mbit/s

FM radio

Built-in FM radio

GPS

GPS/AGPS/GPS XTRA

Storage space

ROM: 4 GB (the available space is about 2.5 GB); RAM: 512 MB (the available

space is about 300 MB)

Maximum transmit power

WCDMA 2100 MHz/900 MHz: +24 dBm (Power Class 3)

GSM 850 MHz/900 MHz: +32.5 dBm (Power Class 4)

GSM 1800 MHz/1900 MHz: +29.5 dBm (Power Class 1)

EDGE 850 MHz/900 MHz: 26 dBm(+/-3 dBm)

EDGE 1800 MHz/1900 MHz: 25 dBm(+/-3 dBm)

U8860

Maintenance Manual

1 Product Introduction

Issue 1.0 (2011-11-14)

Huawei Proprietary and Confidential

Item

Descriptions

Static sensitivity

WCDMA 900 MHz: better than -103.7 dBm/3.84 MHz

WCDMA 2100 MHz: better than-106 dBm/3.84 MHz

GSM 850 MHz: better than -102 dBm/200 KHz

GSM 900 MHz: better than -102 dBm/200 KHz

DCS 1800 MHz: better than -102 dBm/200 KHz

PCS 1900 MHz: better than -102 dBm/200 KHz

Temperature

Operating temperature: –10 °C to 45 °C (without charger)

Storage temperature: –40°C to 70°C

Humidity

Operating humidity: 5% to 95% RH

U8860

Maintenance Manual

2 Applicable Scope and Precautions

Issue 1.0 (2011-11-14)

Huawei Proprietary and Confidential

2 Applicable Scope and Precautions

2.1 Applicable Scope

This document provides maintenance instructions for technicians at service centers authorized

by Huawei. This service manual is confidential and can be accessed by authorized service

sites or companies only. Although every effort has been made to ensure the accuracy of the

document, errors may still exist. If you find any error or have any suggestions, please contact

Huawei's customer service center.

2.2 Maintenance Precautions

Only qualified technicians are allowed to perform the repair and calibration.

Perform all operations in electrostatic discharge (ESD) rooms and wear electrostatic

wrist straps throughout the operations.

Ensure that all the components, screws, and insulators are properly installed after repair

and calibration. Ensure that all cables and wires are installed and connected correctly.

Ensure that the soldering is pb-free and compliant with the environmental-friendly

requirements.

ESD is the major cause of damages to electrostatic-sensitive components, so

every service center must pay high attention to avoid ESD discharge and

comply with the ESD protection requirements of this manual.

2.3 How to Obtain Product and Maintenance Information

To obtain relevant product and maintenance information, you can visit Huawei website at

http://www.huaweidevice.com/cn/technicaIndex.do

U8860

Maintenance Manual

3 Explosive View

Issue 1.0 (2011-11-14)

Huawei Proprietary and Confidential

3 Explosive View

List of components in the explosive view drawing

Note: The components listed in the following table are structural parts of the phone, and

cannot be used as reference when applying for spare parts.

No.

Description

Quantity

U8860 touch panel protective film

U8860 touch panel

U8860 receiver decorating items

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