Huawei U9500 Operating manual

U9500 Maintenance Guide
Issue
1.2
Date
2012-06-30
HUAWEI TECHNOLOGIES CO., LTD.

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Copyright © Huawei Technologies Co., Ltd.
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Copyright © Huawei Technologies Co., Ltd. 2012. All rights reserved.
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]

U9500 Maintenance Guide
About This Document
Issue 1.2 (2012-6-30)
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iii
About This Document
Author
Prepared by
Shu Yingfei (employee ID: 00186163)
Date
2012-04-27
Reviewed by
Date
Approved by
Date
Change History
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

U9500 Maintenance Guide
Contents
Issue 1.2 (2012-6-30)
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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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Contents
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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 WCDMARF 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 Product Overview
1.1 Appearance
Figure 1-1 shows U9500.
Figure 1-1 U9500
1.2 Features
Table 1-1 lists the product features.

U9500 Maintenance Guide
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

U9500 Maintenance Guide
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
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.
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.

U9500 Maintenance Guide
3 Exploded View
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3 Exploded View
3.1 Exploded View
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
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
3.2 Component List
Table 3-1 lists the components of U9500.

U9500 Maintenance Guide
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.
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.
NOTE
NOTE

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.

U9500 Maintenance Guide
4 Layout of Components on the PCBA
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Figure 4-1 Components on the PCBAtop 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 PMchip
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 HD1FRONT BTB connector
Failure symptom:
Receiver failure, power-on button failure, touch
panel failure, three-color light failure, andlight
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, networkaccess 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/FMfailure
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, FMfailure
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

U9500 Maintenance Guide
4 Layout of Components on the PCBA
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Figure 4-2 Components on the PCBAbottom side
U4704RFPA
Failure symptom:
networkconnection failure
U4801RFPA power supply chip
Failure symptom: network
connectionfailure
J4710RFcoaxial connector
Failure symptom: network
connectionfailure
U4702RFduplexer
Failure symptom: network
connectionfailure
J3602/3603 GPSantenna
spring
Failure symptom: GPS failure
J2202Flashlight BTB
connector
Failure symptom:
flashlightfailure and torch
failure
J1800Rear camera BTB
connector
Failure symptom: camera
failure
J3503/J3504Bluetooth/WL
antennaspring
Failure symptom: no signals
U3203/U3204/U3205Loadswitch
Failure symptom: camera failure
MIC1402 Secondary
microphone
Failure symptom: no
loopbackonthe secondary
microphone
U4703RFswitch
Failure symptom: network
connectionfailure
U4701Dual-modeRF
transceiver chip
Failure symptom: network
accessfailure
U4708RFclock（26 MHz）
Failure symptom: network access
failure
U3206Load switch
Failure symptom:
camerafailure
U1201Codecchip
Failure symptom: audio
failure
U401Dualinput and
gate
Failure symptom: power-
on failure
U1301 Energymeter chip
Failure symptom: power-
on failureandpower
measurementfailure
J2203MainFPC BTB
connector
Failure symptom: side key
failure,vibratorfailure,main
microphone failure,and
speakerfailure
J1601 LCD BTB
connector
Failure symptom: LCD
failure
J1301Batteryconnector
Failure symptom: power-
on failure
U902AP energymeter
Failure symptom: power-on
failureorhigh temperature
U3201 2.85VDCDC
Failure symptom: camera
failure
U4802Transceiver power supply
chip
Failure symptom: network
registration failure

U9500 Maintenance Guide
5 Software Upgrade
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5 Software Upgrade
5.1 Upgrade Preparation
Prepare the items listed in Table 5-1.
Table 5-1 Items to be prepared before a software upgrade
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
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.

U9500 Maintenance Guide
5 Software Upgrade
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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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6 Repair Tools
Table 6-1 lists the repair tools.
Table 6-1 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

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
7.1 Disassembly Preparation
Figure 7-1 shows the disassembly tools.
Figure 7-1 Disassembly tools
U9500 Nonmetallic
stick Tweezers Phillips
screwdriver Hexagon
screwdriver
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.

U9500 Maintenance Guide
7 Disassembly Procedure
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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.