Huawei U9200 Maintenance Manual

Prepared by

Date

2012-03-08

Reviewed by

Date

Approved by

Date

U9200 Maintenance Manual

V1.0

Huawei Technologies Co., Ltd.

U9200 Maintenance Manual

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(2012-06-13)

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Change History

Date

Version

Change Reason

Section No.

Description

Author

2012-03-08

V1.0

Li Xianxi

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Contents

1 Product Introduction .................................................................................................................... 6

1.1 Appearance ....................................................................................................................................................... 6

1.2 Features ............................................................................................................................................................ 6

2 Applicable Scope and Precautions ............................................................................................ 8

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

2.2 Precautions ....................................................................................................................................................... 8

2.3 How to Obtain Product and Repair Information .............................................................................................. 8

3 Exploded View............................................................................................................................... 9

3.1 Exploded View ................................................................................................................................................. 9

3.2 Component List ................................................................................................................................................ 9

4 Layout of Components on Main Board................................................................................... 11

4.1 List of Components on Main Board ............................................................................................................... 11

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

5.1 Upgrade Preparation ....................................................................................................................................... 16

5.2 microSD Card Upgrade .................................................................................................................................. 16

5.2.1 Normal Upgrade .................................................................................................................................... 16

5.2.2 Forcible Upgrade .................................................................................................................................. 16

5.3 Troubleshooting .............................................................................................................................................. 17

6 Maintenance Tools ...................................................................................................................... 18

7 Disassembly Procedure .............................................................................................................. 20

7.1 Disassembly Procedure .................................................................................................................................. 20

8 Assembly Procedure ................................................................................................................... 28

8.1 Installing the Air Filter ................................................................................................................................... 28

8.2 Installing the Sub Board to the Front Cover ................................................................................................... 28

8.3 Installing the Touch Key FPC to the Front Cover .......................................................................................... 30

8.4 Wiping the Front Cover .................................................................................................................................. 31

8.5 Gluing TP Components .................................................................................................................................. 32

8.6 Pre-Pressing TP Components ......................................................................................................................... 32

8.7 Packing TP Components ................................................................................................................................ 33

8.8 Installing the REC-FPC to the Main Board .................................................................................................... 33

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8.9 Installing Bluetooth and GPS Supports .......................................................................................................... 34

8.10 Installing the Front Camera to the Main Board ............................................................................................ 34

8.11 Installing the Receiver and Pasting a Protective Film .................................................................................. 35

8.12 Installing the Main Board to the Front Cover .............................................................................................. 35

8.13 Installing the Rear Camera to the Front Cover ............................................................................................. 36

8.14 Installing the Coaxial Line to the Front Cover ............................................................................................. 37

8.15 Installing and Screwing the SPK Support .................................................................................................... 37

8.16 Installing and Pressing the Battery ............................................................................................................... 38

8.17 Installing and Screwing the Shielding Cover ............................................................................................... 38

8.18 Installing and Screwing the Rear Cover ....................................................................................................... 39

9 Troubleshooting Common Problems ...................................................................................... 40

9.1 Architecture Introduction ............................................................................................................................... 40

9.2 Power-On Failure ........................................................................................................................................... 46

9.2.1 Large Current (DC Power Supply)........................................................................................................ 46

9.2.2 Low Current (DC Power Supply) ......................................................................................................... 47

9.2.3 No Current (DC Power Supply) ............................................................................................................ 49

9.3 Charging Failure ............................................................................................................................................. 50

9.4 Display Failure ............................................................................................................................................... 52

9.5 Vibration Failure ............................................................................................................................................ 53

9.6 microSD Card Identification Failure .............................................................................................................. 54

9.7 USIM Card Identification Failure .................................................................................................................. 55

9.8 TP Failure ....................................................................................................................................................... 55

9.9 Touch Key Failure .......................................................................................................................................... 57

9.10 Proximity Sensor and Auto Light Sensor Failure ......................................................................................... 58

9.11 Acceleration Sensor Failure .......................................................................................................................... 58

9.12 Compass Sensor Failure ............................................................................................................................... 59

9.13 Camera Failure ............................................................................................................................................. 60

9.14 Audio Failure ................................................................................................................................................ 60

9.14.1 Speaker Failure ................................................................................................................................... 60

9.14.2 MIC Failure ......................................................................................................................................... 61

9.14.3 Receiver Failure .................................................................................................................................. 62

9.15 Headset Failure ............................................................................................................................................. 63

9.15.1 Headset Silence ................................................................................................... 错误！未定义书签。

9.15.2 No Transmission Through Headset ..................................................................................................... 64

9.16 Wi-Fi/Bluetooth Failure ............................................................................................................................... 65

9.17 FM Failure .................................................................................................................................................... 66

9.18 GPS Failure .................................................................................................................................................. 67

9.19 MHL Failure ................................................................................................................................................. 68

9.20 WCDMA RF Receiving Failure ................................................................................................................... 69

9.21 WCDMA RF Transmitting Failure ............................................................................................................... 71

9.22 GSM RF Receiving Failure .......................................................................................................................... 73

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9.23 GSM RF Transmitting Failure ...................................................................................................................... 75

10 Functional Test .......................................................................................................................... 77

10.1 Keypad Introduction ..................................................................................................................................... 77

10.2 MMI Test ...................................................................................................................................................... 77

10.3 Wi-Fi Test ..................................................................................................................................................... 80

10.4 Voice Call Test .............................................................................................................................................. 80

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1 Product Introduction

Item

Specifications

Phone type

Touchscreen smartphone

Dimensions (H x W x D)

7.69 mm x 129 mm x 64.8 mm

Working band

GSM/GPRS/EDGE: 850/900/1800/1900 UMTS: W850/W900/AWS/W1900/W2100 HSPA+: downlink 21 Mbps; uplink 5.76 Mbps

Weight

About 110 g

Technical standard

WCDMA/GSM

1.1 Appearance

Figure 1-1 shows the U9200.

Figure 1-1 U9200

1.2 Features

Table 1-1 lists the specifications of the U9200.

Table 1-1 Specifications of the U9200

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Item

Specifications

System platform

OMAP4460 + XMM 6260 OS: Android 4.0

Memory

4 GB ROM + 1 GB RAM

Ports

Micro USB (for charging and data transmission)

3.5 mm headset jack MHL port;

Battery

1670 mAh Li-ion battery

Display

Size: 4.3 inches Category: AMOLED Resolution: 960 x 540 pixels (qHD)

Expansion card

Supports a maximum of 32 GB microSD card

Antenna

Built-in antenna

Camera

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

Bluetooth

Bluetooth 3.0

Wi-Fi

802.11b/g/n

GPS

GPS, AGPS

Supported

Features

WCDMA/GSM Android 4.0

4.3-inch QHD AMOLED, capacitive touchscreen 1670 mAh Li-ion battery Rear camera: 8 megapixels, autofocus, with dual LED

flashlights Front camera: 1.3 megapixels Gravity sensor, proximity sensor, light sensor, and gyroscope Bluetooth, FM, GPS/AGPS WCDMA 3G/WLAN Huawei's Android app-store, Hi-Space

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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 information about Huawei's products and their maintenance, please visit Huawei's website at

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

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3 Exploded View

Part Number

Description

Quantity

03021PLT

Manufactured Board, U9200-1, HD1U9200MG, U9200-1Handset Main Board (GSM 4 Band, W2100/W1900/W1700/W900/W850), Terminal Dedicated, 2*2

NOTE

Battery cover protective film

Battery cover

Bluetooth antenna

GPS antenna

Shielding cover

PCBA

Receiver

Front cover

Touchscreenrelated components

Touchsreen protective film

Antenna-related components

Speaker

Battery

Coaxial line

3.1 Exploded View

Figure 3-1 shows the exploded view of the U9200.

Figure 3-1 Exploded view of the U9200

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

3.2 Component List

Table 3-1 lists the components of the U9200.

Table 3-1 Components of the U9200

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Part Number

Description

Quantity

03021KAQ

Manufactured Board, U9200, HD1U9200LS, U9200 light sensor FPC(GSM 4 band, W2100/W1900/W1700/W850W/W900),1*1

03021KAH

Manufactured Board, U9200, U9200FL, U9200 flash light FPC(GSM 4 band, W2100/W1900/W1700/W850W/W900),1*1

03021KAF

Manufactured Board, U9200, HD1U9200L, U9200 main FPC(GSM 4 band, W2100/W1900/W1700/W850W/W900),1*1

03021KAP

Manufactured Board, U9200, HD1U9200SP, U9200 speaker board(GSM 4 band, W2100/W1900/W1700/W850W/W900),2*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

23040221

LCD Indication Module, single display, AMOLED,

4.29'',540*RGB*960,16.7M,16:9,2.368mm (typ), with touch panel, BTB

1 23060074

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

23060080

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

27160904

Terminal Antenna, 824MHz-960MHz/1710MHz-2170MHz, larger than -3dBi, isotropic, linear polarization, smaller than 3, 4W, U9200 Main Antenna, LDS Antenna, Amphenol

27160905

Terminal Antenna, 1575MHz, larger than -3dBi, isotropic, linear polarization, smaller than 2, 4W, U9200 GPS Antenna, LDS Antenna, Amphenol

27160906

Terminal Antenna, 2400MHz-2500MHz, larger than -4dBi, isotropic, smaller than 2.5,4W, U9200 WIFI Antenna, LDS Antenna, Amphenol

1 04050383

Out Sourcing, RF Coaxing Cable, 82.5mm, fit 14240433, Terminal Dedicated

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, contact your local technical support center.

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4 Layout of Components on the Main Board

U3699, GPS low noise amplifier

Failure symptom: GPS failure

U4704, RF PA

Failure symptom: call establishment

failure,

U1201, CODEC chip

Failure symptom: audio playback

failure

U4802, RF DCDC

Failure symptom: call establishment

failure

U4701, RF transceiver

Failure symptom: call establishment

failure

Z3599, Wi-Fi/Bluetooth filter

Failure symptom: Wi-Fi/Bluetooth

failure

J1602, AMOLED connector

Failure symptom: unexpected

problems of the display and touchscreen, Power-on failure, and software

U3101, MHL chip

Failure symptom: MHL failure

J2101, microSD card socket

Failure symptom:

microSD card identification failure

MIC1402, secondary MIC

Failure symptom: background

noise

J2201, FPC connector

Failure symptom:

power-on, side button, and flashlight failure

X900, crystal (32 KHz）

Failure symptom: power-on

failure

U1901, charging chip

Failure symptom: charging failure

and power-on failure

U3201, 2.85 V DCDC

Failure symptom: power-on

failure

U4702, RF duplexer

Failure symptom: call establishment

U301/U301_POP, AP+DDR2

Failure symptom:

power-on failure

Z3601, Z3602, GPS filter

Failure symptom: GPS failure

U3601, GPS chip

Failure symptom: GPS failure

Q1901, discharging MOS transistor

Failure symptom: power-on

failure

J3602, J3603, antenna clip

Failure symptom: poor GPS signal

J1102, EMMC

Failure symptom:

power-on failure

U3259, DC-DC

Failure symptom: rear

camera failure

U901, power management chip

Failure symptom: power-on

failure

VCXO900, primary crystal oscillator

Failure symptom:

power-on failure

U501, clock buffering chip

Failure symptom:

power-on failure

J3503, J3504, antenna clip

Failure symptom: poor

Wi-Fi/Bluetooth signal

J2102, SIM card connector

Failure symptom:

unexpected problems of SIM card

J1800, camera connector

Failure symptom:

rear camera failure

TCXO3601, GPS crystal oscillator

Failure symptom: GPS failure

U3103, level shifter chip

Failure symptom:

MHL failure

U3102, analog switch

Failure symptom: USB

and MHL failure

U3501, Wi-Fi/Bluetooth switch

Failure symptom: Wi-Fi/Bluetooth

failure

J3505, Wi-Fi/Bluetooth antenna clip

Failure symptom: Wi-Fi/Bluetooth

failure

U2005, COMPASS chip

Failure symptom: compass failure

U3401, Wi-Fi/Bluetooth/FM chip

Failure symptom: Wi-Fi/Bluetooth/FM

failure

U2004, acceleration sensor chip

Failure symptom: accelerometer

failure

U3104, 3.3 V LDO

Failure symptom: MHL failure

U3169, phase inverter

Failure symptom: MHL failure

U2401, LED control chip

Failure symptom: triple color

LED

J1500, headset jack

Failure symptom: headset failure

J1900, IO connector

Failure symptom: unexpected

problems of USB/MHL/charging

J1801, front camera connector

Failure symptom:

unexpected problems of front camera

J1402, FPC connector

Failure symptom: unexpected

problems of triple color LED/light sensor

U2003, gyroscope chip

Failure symptom: gyroscope failure

U1897, U1898, U1899, switch

Failure symptom:

unexpected camera problems

U1301, energy meter

Failure symptom: power-on and

charging failure

J1301, battery connector

Failure symptom: power-on and

charging failure

U1800, flashlight control chip

Failure symptom: unexpected

flashlight problems

U902, DC-DC

Failure symptom: power-on

failure

U3801, MODEM chip

Failure symptom: call establishment

failure

U401, Gate

Failure symptom:

unexpected CP problems, power-on failure

U1900, switch

Failure symptom:

unexpected USB problems, power-on failure

U4801, RF DCDC

Failure symptom: call establishment

failure

U4703, RF switch

Failure symptom: call establishment

failure

J2202, primary FPC connector

Failure symptom: call establishment failure,

unexpected problems of the speaker, motor, and

U2601, MODEM MCP

Failure symptom: call establishment

failure

X2601, crystal (32 KHz)

Failure symptom: call establishment

failure

U4708, crystal oscillator (26 MHz)

Failure symptom: call

establishment failure

J4710, RF connector

Failure symptom: call

establishment failure

Figure 4-1 shows the U9200's main board components.

Figure 4-1 U9200's PCBA components

4.1 List of Components on the Main Board

Table 4-1 lists the U9200's main board components.

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Table 4-1 U9200's main board components

Part Number

Name

Position

19040121

Protection Tube, Fast Blowout Fuse, 24 V, 2 A, IEC Spec, 0.03ohm, 0.100 A*A*Sec, UL, Terminal Dedicated

F1900

14240309

IO Connector, Female, 5pin, WTB Connector, SMT, Terminal Dedicated

J1301

14240199

BTB Connector, Female, 10Pin, 0.4mm, SMT, 0.9mm, Terminal Dedicated

J1402

14240381

Headphone Connector, 3.5mm, 6pin, Side plugging, SMT, Mid Mount

J1500

14240375

BTB Connector, female, 40Pin, 0.4mm, 0.8mm, SMT, Terminal Dedicated

J1602

14240181

BTB Connector, Female, 24Pin, 0.4mm, SMT, Mating Height 1.0mm, Terminal Dedicated

J1800, J1801, J2201, J2202

14240247

IO Connector, Micro_B Type Female, 5pins, Side Plugging Type, SMT, 4 Dip, Mid Mount, 1.5mm Height from PCB Top Side, Terminal Dedicated

J1900

14240228

Card Connecter, MicroSD Receptacle, 8pin, PUSH-PUSH, 1.1mm, Have Lock, Without Hold Peg,

1.45mm, Terminal Dedicated

J2101

14240301

Card Socket Connector, SIM Card Socket, 6pin, PUSH-PUSH, 1.25mm, With Lock, 1.2mm, Terminal Dedicated

J2102

51623073

RF shielding frame

J2451

51623077

GPS shielding cover

J2452

51623074

PMU shielding frame

J2454

51623076

main shielding cover hooker

J2481, J2482

51621274

DKBA8.382.0615, Main Antenna SMT Spring, C5600

J3503, J3504, J3505, J3602, J3603

14240433

RF Connector, Coaxial Connector, 50ohm, Straight, male, SMT, W.FL2, Terminal Dedicated

J4710

14240432

RF Connector, RF Switch, Straight, female, SMT, Terminal Dedicated

J4711 22050076

Microphone,-38dB.,3.76*2.95*1.1mm, silicon, bottom

MIC1402

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Part Number

Name

Position

15060228

MOSFET, P Channel, -12V, -2.4 A, 112mohm, -8 V, SOT23, from 15060150,TS16949, Terminal Dedicated

Q1901

12070038

Temperature Compensated Oscillator, 26MHz, +/-1.5ppm(max),+1.8V, +/-0.5ppm(max),

-40degC,85degC, Terminal Dedicated

TCXO3601, VCXO900

41100049

Terminal Application Processor, S-PBGA-N547, Dual Cortex-A9 1.5 GHz, 32KB, 1.2V, 32bit, 3000mW, 2000mW, HS version, Terminal Dedicated, Dual Core Cortex-A9 1.5 GHz

U301 40020151

DDR2 DRAM, 8Gb LPDDR2, 400MHz, 32bit,1.8V/1.2V, 216BALL FBGA(POP), Terminal Dedicated

U301_POP 36020320

LVCMOS, Dual 2 Input And Gate,VSSOP, 4.5ns, 24mA, LVCOMS, LVCOMS, 0ns, 0ns, 0ns

U401

39130132

Clock Driver, 0.01MHz-52MHz, LVCMOS/LVTTL,2.3V-5.5V-WCSP-1:4- Terminal dedicated

U501 39070114

Power Management IC,2.5-4.8 V, seven DC-DC, eleven LDO, FBGA187, Terminal Dedicated

U901

39110646

Power Driver, Buck DCDC, CSP16, OMAP platform core driver, Terminal Dedicated

U902

40060351

NAND Flash, 4GB EMMC V4.41, 52 MHz, 1024 KB,

3.3 V, FBGA153 (Pb-free), Terminal Dedicated

U1102

43110064

AUDIO Chip, audio codec, OMAP Solution, PBGA120, Terminal Dedicated

U1201 39070073

-0.3–2.75 V, Battery Gauge, SON, Terminal Dedicated

U1301

39110620

Power Driver, 1.5 A LED flash driver IC, CSP, Terminal Dedicated

U1800

38020065

Analog Switch, one input one output load switch, 1.2 V–4.0 V, 150mohm, WLCSP

U1810, U1897, U1898, U1899

38020062

Analog Switch, 2 channel USB highspeed switch,

3.0–4.3V, Ron(max)<6.5ohm, Ron(typ)<4ohm, 550MHz, UMLP/UQFN

U1900

39070117

Battery Management IC, 4.2V, 18 V, Charger with separate Power Path Control, WCSP, SMT, Terminal Dedicated

U1901

38140020

Semiconductor Sensor, three-axis gyroscope, SMT

U2003

38140064

Semiconductor Sensor, Accelerometer, LGA, 3axis, Terminal Dedicated

U2004

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Part Number

Name

Position

38140024

Semiconductor Sensor, E-Compass, WL-CSP (Pb-free), 3axis, Terminal Dedicated

U2005

39110463

Control Chip, LED Control Chip, QFN-RUE, Terminal Dedicated

U2401

40060346

MCP, 1Gb(64Mx16) NAND FLASH, 200MHz, 128KB,

1.8V, 130ball BGA (Pb-free), 256Mb (16Mbx16) DDR, Terminal Dedicated

U2601 43090124

VIDEO Chip, 49 VFBGA, 1.2V/1.8V/3.3V, HDMI&USB 2in1, 1080p/30Hz, Terminal Dedicated

U3101 38020061

Analog Switch, DPDT, 2.7–4.3V, 1900MHz, UMLP16

U3102

36020401

CMOS,2BIT-1.8V/3.3V Level Shifter,GFN8 (Pb-free),1.5ns, 14mA, CMOS, Open drain, Terminal Dedicated

U3103

39110548

LDO, 3.3 V, 2%,0.15 A, SC70-5, Terminal Dedicated

U3104

36020336

LVCMOS, Unbuffer Single Inverter Gate, SC-70,9.0ns,

4.0mA, CMOS, CMOS

U3169

39110566

Switching Regulators, 1–4V, 1.5A, SMT, Terminal Dedicated

U3201, U3259

39210010

Terminal Baseband process IC, Single Band 2.4 GHz WLAN/Bluetooth 2.1/FM Single chip-BCM4330, 2.3–5.5 V, WLBGA133(Pb-free)

U3401 47140049

RF Switch, 0.5–3.0 GHz, SP3T, 0.45 dB, 1.22, 20 dB, TSON, 200–260V(HBM), Terminal Dedicated

U3501

39210004

Terminal Baseband Peripheral IC, GPS Receiver,

2.3–5.5V-WLBGA42 (Pb-free), Terminal Dedicated

U3601

47090053

RF LNA, 1575 MHz, 14 dB min., 1.6 dB max., SOT886, Terminal Dedicated

U3699

39200240

Terminal Baseband process IC, WCDMA/GSM Dual, mode Baseband Processor-XMM6260 (PMB9811),3.05V-4.8V, PG-VF2BGA-221-1

U3801

39200241

Terminal Baseband process IC, WCDMA/GSM Dual, Mode RF Transceiver SMartUE2 (PMB5712),2.5V/1.8V, PG-WFWLB-138-2

U4701 47140093

RF Switch, 824–2170MHz, SP8T ASM, 1.2dB max.,

1.6max.,LGA, Terminal Dedicated

U4703

12070027

Temperature Compensated Oscillator, 26MHz, +/-2.5ppm,1.8v-2.9v, +/-2.5ppm, 30degC, 85degC, Terminal Dedicated

U4708

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Part Number

Name

Position

39070119

Power Management IC, 2.9–5.1V, PUMP-BUCK DCDC 0-5V, auxiliary charge pump 4 V 10 mA, WLCSP, Terminal Dedicated

U4801

39070116

Power Management IC, 2.9–5.1V, 3bucks(1.2V 3A; 1.8V 3A; 2.85V 3A),1 LDO 2.65V, compatible with infineon transceiver PMB5712, 16-BUMP WLCSP, Terminal Dedicated

U4802

12020125

Crystal, 0.032768 MHz, 12.5pF+/-30ppm, 60/80kohm,

3.2*1.5 SMD, Terminal Dedicate, ELOM, TS16949

X2601, X900

13030052

Ceramic Filter, 2450 MHz, 1.8 dB,20125, Terminal Dedicated

Z3599

13010180

SAW filter, 1575.42 MHz,0.9dB,1.4*1.1 mm, for terminal using only

Z3601, Z3602

51633362

U8650_WIFI_CHIP_GASKET, U8650

U3401

13080147

Duplexer, RX:1805-1880MHz/TX:1920-1980MHz/RX:2110-2170 MHz/TX:1710-1755MHz/RX:2110-2155MHz/TX:18501910MHz/RX:1930-1990MHz/TX:824-849MHz/869-894 MHz/TX:880-915MHz/RX:925-960MHz, 3dB.,3.95dB.,47dB, SMT, Terminal Dedicated

U4702

47100455

RF Power Amplifying Module, 1710–1785MHz/1850–1910MHz/1920–1980MHz/824–8 49MHz/880–915MHz, 35.7dB max., 35dBm, MCM, Terminal Dedicated

U4704

NOTE

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5 Software Upgrade

Huawei U9200 Maintenance Manual

Specifications and Main Features

Frequently Asked Questions

User Manual