Huawei U9500 Maintenance Manual

U9500 Maintenance Guide

Issue

1.2

Date

2012-06-30

HUAWEI TECHNOLOGIES CO., LTD.

Issue 1.2 (2012-6-30)

Huawei Proprietary and Confidential

ii

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:

support@huawei.com

U9500 Maintenance Guide

About This Document

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Author

Prepared by

Shu Yingfei (employee ID: 00186163)

Date

2012-04-27

Reviewed by

Date

Approved by

Date

Version

Change Reason

Changed Chapter

Change Description

Author

2012-04-27

V1.0

Shu Yingfei

2012-05-02

V1.1

Added feedback about the first release.

Shu Yingfei

2012-06-30

V1.2

Modified chapters 4, 7, and 9 according to the service department opinions.

Feng Yifan

About This Document

Change History

U9500 Maintenance Guide

Contents

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Contents

About This Document ................................................................................................................... iii

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

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

1.2 Features ................................................................................................................................ ............................ 1

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

3.1 Exploded View ................................................................................................................................................. 5

3.2 Component List ................................................................................................................................................ 5

4 Layout of Components on the PCBA ........................................................................................ 7

4.1 Components on the PCBA ............................................................................................................................... 7

5 Software Upgrade ....................................................................................................................... 10

5.1 Upgrade Preparation ....................................................................................................................................... 10

5.2 Upgrade Using a microSD Card ..................................................................................................................... 10

5.2.1 Normal Upgrade .................................................................................................................................... 10

5.2.2 Forcible Upgrade .................................................................................................................................. 11

5.3 Upgrade Failure Troubleshooting ................................................................................................................... 11

6 Repair Tools ................................................................................................................................. 12

7 Disassembly Procedure .............................................................................................................. 14

7.1 Disassembly Preparation ................................................................................................................................ 14

7.2 Disassembly Procedure .................................................................................................................................. 14

8 Assembly Procedure ................................................................................................................... 29

8.1 Assembly Description .................................................................................................................................... 29

8.2 Assembly Procedure ....................................................................................................................................... 29

9 Troubleshooting .......................................................................................................................... 35

9.1 Architecture Introduction ............................................................................................................................... 35

9.2 Failure and Handling Process ......................................................................................................................... 40

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9.2.1 Power-On Failure .................................................................................................................................. 40

9.2.2 Excessive Current ................................................................................................................................. 42

9.2.3 Weak Current ........................................................................................................................................ 44

9.2.4 No Current ............................................................................................................................................ 46

9.2.5 Charging Failure ................................................................................................................................... 48

9.2.6 Display Failure ...................................................................................................................................... 50

9.2.7 Vibration Failure ................................................................................................................................... 52

9.2.8 microSD Card Detection Failure ........................................................................................................... 54

9.2.9 USIM Card Detection Failure ............................................................................................................... 56

9.2.10 TP Failure ............................................................................................................................................ 58

9.2.11 Light Sensor Failure ............................................................................................................................ 60

9.2.12 Acceleration Sensor Failure ................................................................................................................ 62

9.2.13 Compass Failure .................................................................................................................................. 63

9.2.14 Gyroscope Failure ............................................................................................................................... 64

9.2.15 Camera Failure .................................................................................................................................... 65

9.2.16 Phone Audio Failure............................................................................................................................ 67

9.2.17 Headset Audio Failure ......................................................................................................................... 69

9.2.18 Speaker Noice ..................................................................................................................................... 71

9.2.19 Wi-Fi/Bluetooth Failure ...................................................................................................................... 73

9.2.20 FM Failure .......................................................................................................................................... 76

9.2.21 GPS Failure ......................................................................................................................................... 78

9.2.22 HDMI Failure ...................................................................................................................................... 81

9.2.23 WCDMA RF Reception Failure .......................................................................................................... 84

9.2.24 GSM RF Reception Failure ................................................................................................................. 87

9.2.25 GSM RF Transmission Failure............................................................................................................ 90

10 Functional Test .......................................................................................................................... 94

10.1 Keypad Introduction ..................................................................................................................................... 94

10.2 MMI Test ...................................................................................................................................................... 95

10.3 Wi-Fi Test ..................................................................................................................................................... 97

10.4 Voice Call Test .............................................................................................................................................. 97

U9500 Maintenance Guide

1 Product Overview

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1.1 Appearance

Figure 1-1 shows U9500.

Figure 1-1 U9500

1 Product Overview

1.2 Features

Table 1-1 lists the product features.

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1 Product Overview

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Table 1-1 U9500 product features

Item

Description

Type

Touchscreen smartphone

Dimensions (H x W x D)

129.9 mm x 64.9 mm x 8.9 mm (5.11 in. x 2.56 in. x 0.35 in.)

Working band



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



UMTS: W850/W900/AWS/W1900/W2100 MHz



HSPA+: downlink: 21 Mbit/s; uplink: 5.76 Mbit/s

Weight (with battery)

About 132g

Description

WCDMA/GSM dual mode

Operating platform

OMAP4460+XMM 6260 Operating system: Android 4.0

Memory

8 GB ROM +1 GB RAM

Interface

Micro USB (for charging and data connection), 3.5 mm headset jack, and MHL interface

Battery

1800 mAh Li-ion battery

Display



Size: 4.5 inches



Type: TFT



Resolution: 1280 x 720 pixels (HD)

microSD card

Supports a maximum of 32 GB microSD card.

Antenna

Built-in antenna

Camera

Rear camera: 8 megapixels, with dual LED flashlight Front camera: 1.3 megapixels

Bluetooth

Bluetooth 3.0

Wi-Fi

802.11b/g/n

GPS

GPS, AGPS

FM

Supported

Outstanding features



WCDMA/GSM



Android 4.0



4.5-inch HD IPS+ TFT capacitive touch screen



1800 mAh battery



8.0 megapixel BSI rear camera (automatic focus+dual flashlight)



1.3 megapixel front camera



1080p HD video recording and playback



MHL to HDMI output



Dolby surround stereo audio



earSmart™ sound processor

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1 Product Overview

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Item

Description



Dual microphone noise reduction



Gravity sensitive, proximity sensitive, light sensitive, and gyroscope



Bluetooth 3.0, FM, and GPS/AGPS/GLONASS



High-speed WCDMA 3G/WLAN access



Huawei's android app store: Hi-space



Rich services in Hi-space

U9500 Maintenance Guide

2 Applicable Scope and Precautions

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2 Applicable Scope and Precautions

ESD is the main cause of damage to electrostatic-sensitive components. Each ASC must exercise caution to avoid ESD damage and comply with the ESD protection requirements in this manual.

2.1 Applicable Scope

This document provides repair instructions for technicians at service centers authorized by Huawei. This maintenance manual is confidential and accessible to authorized service centers (ASCs) and authorized service providers (ASPs) only. While every effort has been made to ensure the accuracy of this document, errors may still exist. If you find any errors or have any suggestions, please contact Huawei's customer service.

2.2 Precautions



Only qualified technicians are allowed to perform repair and calibration.



Perform all operations in electrostatic discharge (ESD) rooms and wear ESD wrist straps throughout the operations.



Ensure that all components, screws, and insulators are properly installed after repair and calibration, and that all cables and wires are installed and connected correctly.



Ensure that the soldering is lead-free and compliant with eco-friendly requirements.

2.3 How to Obtain Product and Repair Information

To obtain product and maintenance information, visit Huawei website at:

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

U9500 Maintenance Guide

3 Exploded View

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3.1 Exploded View

Battery cover

assembly

GPS

antenna

Bluetooth

antenna

Back cover

assembly

Side keys

Battery PCBA

Speaker

Front cover

assembly

TP

assembly

TP

protector

TP protector

Speaker Coaxial cable

The components listed in Figure 3-1 are structural parts of the phone, and cannot be used as reference when requesting spare parts.

Figure 3-1 shows the U9500 exploded view.

Figure 3-1 U9500 exploded view

3 Exploded View

3.2 Component List

Table 3-1 lists the components of U9500.

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3 Exploded View

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Table 3-1 Components of U9500

Part Number

Description

Quantity

03021JJY

Manufactured Board,U9500-1,HD1FRONTM,U9500-1Handset Main Board(8G ROM/GSM 4 Band,W2100/W1900/W1700/W900/W850),Terminal Dedicated,2*2

1 03021KXY

Manufactured Board,U9500-1,HD1FRONTR,U9500 Receiver FPC(GSM 4 band,W2100/W1900/W1700/W850W/W900),1*1

1

03021KXV

Manufactured Board,U9500-1,HD1FRONTL,U9500 main FPC(GSM 4 band,W2100/W1900/W1700/W850W/W900),1*1

1

03021KXW

Manufactured Board,U9500,HD1FRONTFL,U9500 flash light FPC(GSM 4 band,W2100/W1900/W1700/W850W/W900),1*1

1

03021KXU

Manufactured Board,U9500-1,HD1FRONTA,U9500 antana board(GSM 4 band,W2100/W1900/W1700/W850W/W900),6*6

1 22020079

Speaker,8ohm,0.5w,11*15*3.5(Improved),Terminal Dedicated

1

22030044

Receiver,32ohm,6*15*2.0mm,wideband,Terminal Dedicated

1

02230MAN

U9500,Black A_Cover+LCD+TouchLens

1

02230MAP

U9500,White A_Cover+LCD+TouchLens

1

23060074

Camera Module Group,CMOS,1.3M-FF-Front-HD-BTB

1

23060093

Camera Module Group,1/3.2" CMOS/BSI,8M, 3264*2448,Terminal Dedicated

1

27160960

Terminal Antenna,824MHz-960MHz/1710MHz-2170MHz,Better Than

-3dBi/Better Than -3dBi,Isotropic,line polarization,better than 3,4W,U9500-1 Main Antenna Fpc SAA

1 27160961

Terminal Antenna,2400MHz-2500MHz,Better Than -2dBi,Isotropic,Line Polarization,Better Than 3,4W,U9500-1 Wifi Antenna Fpc SAA

1

27160962

GPS Antenna,1565MHz-1615MHz,Better Than -3dBi,Isotropic,Line Polarization,Better Than 3,4W,U9500-1 GPS Antenna LDS SAA

1

04050406

Out Sourcing Cable,RF Coaxing Cable,75.6mm,Fit 14240433,Terminal Dedicated

1

02230MAN is the black front cover assembly while 2230MAP is the white one. Select either in actual use.

NOTE

The list of components is provided for reference only. This list is subject to change without notice. The latest component list is available on Huawei's ITEM information system. If you have any questions, please contact the local technical support center.

U9500 Maintenance Guide

4 Layout of Components on the PCBA

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4 Layout of Components on the PCBA

4.1 Components on the PCBA

Figure 4-1 and Figure 4-2 show the components on the top and bottom sides of the PCBA and failures that might occur because of damages to the components.

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4 Layout of Components on the PCBA

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Figure 4-1 Components on the PCBA top side

VCXO900 Crystal oscillator（ 26 MHz）

Failure symptom: power-on

failure

D1600 LCD backlight diode

Failure symptom: LCD backlight

failure

U2801 Audience

Failure symptom: Noise heard

by the remote end

U1600 LCD backlight power supply chip Failure symptom: LCD backlight

failure

U1601 LCD power supply chip

Failure symptom: LCD failure

X900 Crystal oscillator（ 32 kHz）

Failure symptom: power-on failure

U901 PM chip

Failure symptom: power-on

failure or excessive current

U2005 Compass chip

Failure symptom: compass

failure

U1800 Flashlight driver

Failure symptom: camera failure and torch

failure

J2201 HD1FRONTBTB connector

Failure symptom:

Receiver failure, power-on button failure, touch panel failure, three-color light failure, and light sensor failure

U2003 Gyroscope chip

Failure symptom: gyroscope failure

U3207/U3208 loadswitch

Failure symptom: camera

failure

U301/U301_POP Main chip/DDR

Failure symptom: power-on failure

U3801 Modem

Failure symptom: network registration

failure, network access failure, and call set-up failure

TCX03601 GPS clock

Failure symptom: GPS failure

U501 Clock buffering chip

Failure symptom: power-on failure, codec

failure, or BT/WL/FM failure

U1102 8G EMMC

Failure symptom: power-on failure,

data storage or read failure

U3103 Level shifter chip

Failure symptom: MHL failure

U3106 Inverter

Failure symptom: MHL

failure

U3104 3.3 V LDO

Failure symptom: MHL failure

J1500 Headset jack

Failure symptom: headset failure, FM failure

J3604 GPS antenna grounding spring

Failure symptom: GPS failure

U3601 GPS chip

Failure symptom: GPS failure

Z3599 Filter

Failure symptom: no signals on

BT/WL

U3501 RF switch

Failure symptom: network

registration failure and network access failure

U3401 FM/BT/WL three-in-one chip

Failure symptom: FM/BT/WL failure

U1901 Charging chip

Failure symptom: charging

failure

U3102 USB switch

Failure symptom: USB connection

failure

U3101 MHL chip

Failure symptom: MHLfailure

U1900 USB switch

Failure symptom: MHL failure and

USB connection failure

U3105 DC-DC

Failure symptom: camera failure

U2004 Acceleration sensor chip

Failure symptom: accelerometer failure

U2401 Tri-color light control chip

Failure symptom: light failure

J1801 Secondary camera BTB connector

Failure symptom: camera failure

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4 Layout of Components on the PCBA

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Figure 4-2 Components on the PCBA bottom side

U4704RFPA

Failure symptom:

network connection failure

U4801 RFPA power supply chip

Failure symptom:network

connection failure

J4710RFcoaxial connector

Failure symptom:network

connection failure

U4702 RFduplexer

Failure symptom: network

connection failure

J3602/3603 GPS antenna spring

Failure symptom:GPS failure

J2202Flashlight BTB connector

Failure symptom:

flashlight failure and torch failure

J1800Rear camera BTB connector

Failure symptom:camera

failure

J3503/J3504Bluetooth/WL antenna spring

Failure symptom:no signals

U3203/U3204/U3205Load switch

Failure symptom:camera failure

MIC1402 Secondary microphone

Failure symptom:no

loopback on the secondary microphone

U4703 RF switch

Failure symptom:network

connection failure

U4701Dual-mode RF transceiver chip

Failure symptom: network

access failure

U4708 RFclock（26 MHz）

Failure symptom:network access

failure

U3206Load switch

Failure symptom:

camera failure

U1201Codec chip

Failure symptom:audio

failure

U401Dual input and gate

Failure symptom:power-

on failure

U1301 Energy meter chip

Failure symptom:power-

on failure and power measurement failure

J2203Main FPC BTB connector

Failure symptom:side key

failure, vibrator failure, main microphone failure, and speaker failure

J1601 LCD BTB connector

Failure symptom: LCD

failure

J1301Battery connector

Failure symptom:power-

on failure

U902 AP energy meter

Failure symptom:power-on

failure or high temperature

U3201 2.85 V DCDC

Failure symptom:camera

failure

U4802Transceiver power supply chip

Failure symptom:network

registration failure

U9500 Maintenance Guide

5 Software Upgrade

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5.1 Upgrade Preparation

Category

Item

Remarks

Upgrade environment

Computer

Operating system: Windows 2000, Windows XP, or Windows 7

microSD card

Available space: > 1 GB

Battery

Remaining power: > 20%

Upgrade file

update.app

This version is provided for reference only. Please download the latest version when upgrading the software.

Upgrade using the microSD card

Normal upgrade

Forcible upgrade

Prepare the items listed in Table 5-1.

Table 5-1 Items to be prepared before a software upgrade

5 Software Upgrade

5.2 Upgrade Using a microSD Card

5.2.1 Normal Upgrade

To perform a normal upgrade, perform the following steps:

Step 1 Create a dload folder in the microSD card's root directory. Step 2 Copy the upgrade file update.app to the dload folder. Step 3 Install the microSD card to the phone and power the phone on. Step 4 Enter *#*#2846579#*#* in dialing mode. Choose ProjectMenu > Upgrade > microSD card

upgrade, and touch Confirm.

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The upgrade progress is displayed on the screen. After the upgrade is completed, the phone automatically restarts. If the upgrade fails, the upgrade page remains on the screen, and an upgrade failure message

is displayed.

---End

5.2.2 Forcible Upgrade

If the mobile phone fails to start, use the following method to perform a forcible upgrade:

Step 1 Create a dload folder in the microSD card's root directory. Step 2 Copy the upgrade file update.app to the dload folder. Step 3 Install the microSD card to the phone. Step 4 Press the volume up, volume down, and Power keys concurrently for more than 3 seconds to

power on the phone. The phone starts to upgrade. The upgrade process is displayed on the screen. After the upgrade is complete, the phone automatically restarts. If the upgrade fails, the upgrade page remains on the screen, and an upgrade failure message

is displayed.

---End

5.3 Upgrade Failure Troubleshooting

If you fail to upgrade the phone using a microSD card, perform the following steps to troubleshoot the failure:

Step 1 Check whether the upgrade file is correct. Step 2 Check whether the upgrade file is stored in the right directory. Step 3 Check whether the upgrade method is correct. Step 4 Check whether the microSD card functions properly. Step 5 Perform the upgrade again.

---End

U9500 Maintenance Guide

6 Repair Tools

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Table 6-1 lists the repair tools.

Picture

Description

Name: heat gun Usage: Heats components

Name: soldering iron Usage: solders components

Name: DC power supply Usage: powers the phone

Name: soldering fixture Usage: secures the PCBA

Name: lead-free solder wire Usage: soldering material

Table 6-1 Repair tools

6 Repair Tools

U9500 Maintenance Guide

6 Repair Tools

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Picture

Description

Name: digital multimeter Usage: measurement

Name: toolkit Usage: assembling and disassembling

Name: electric screwdriver Usage: fastens and removes screws

U9500 Maintenance Guide

7 Disassembly Procedure

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7 Disassembly Procedure

U9500

Nonmetallic

stick

Tweezers

Phillips

screwdriver

Hexagon

screwdriver

7.1 Disassembly Preparation

Figure 7-1 shows the disassembly tools.

Figure 7-1 Disassembly tools

7.2 Disassembly Procedure

Wear ESD gloves when you remove the PCBA, antenna board, FPCs, and other electronic components.

To disassemble a U9500, perform the following operations:

Step 1 Remove the battery cover.

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Step 2 Remove the screws in the back over.

1. Remove the hexagon screws in the four corners.

2. Remove the two Phillips screws in the central part.

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3. Remove the four Phillips screws on both sides of the phone.

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Step 3 Remove the back cover.

Step 4 Remove the volume keys and relevant FPCs.

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NOTE

Step 5 Remove the battery.

The battery is packed using aluminum film and adhesive tapes. Exercise caution. Do not damage the film or the adhesive tapes. The battery cannot be used any more after being disassembled.

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Step 6 Remove the keypad backlight.

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Step 7 Remove the primary microphone.

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7 Disassembly Procedure

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Step 8 Remove the coaxial cable.

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7 Disassembly Procedure

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Step 9 Remove the antenna board.

Remove the antenna board screws and then the antenna board.

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Step 10 Remove the PCBA.

Release the PCBA from the buckles, pull the PCBA downward to remove it, and disconnect the receiver BTB connector.

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Step 11 Remove the receiver support.

Use the tweezers to separate the Power key FPC from the PCBA and pry the receiver support off.

Huawei U9500 Maintenance Manual

Specifications and Main Features

Frequently Asked Questions

User Manual