LG LG-E730 User manual

Internal Use Only
Service Manual
LG-E730
Date: September, 2011 / Issue 1.0

- 2 - Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Table Of Contents
1. INTRODUCTION..................................................................... 3
1.1 Purpose ........................................................................................................3
1.2 Regulatory Information .........................................................................3
1.3 Abbreviations.............................................................................................5
2. PERFORMANCE...................................................................... 7
2.1 Product Name............................................................................................7
2.2 Supporting Standard..............................................................................7
2.3 Main Parts : GSM Solution.....................................................................7
2.4 HW Features ...............................................................................................8
2.5 SW Features............................................................................................. 10
2.6 HW SPEC. ................................................................................................. 13
3. TECHNICAL BRIEF................................................................ 24
3.1 GENERAL DESCRIPTION...................................................................... 24
3.2 GSM mode ............................................................................................... 26
3.3 UMTS mode............................................................................................. 29
3.4 GPS RECEIVER.......................................................................................... 31
3.5 OFF-CHIP RF COMPONENTS............................................................. 32
3.6 Digital Baseband(MSM8255)............................................................ 39
3.7 Hardware Architecture........................................................................ 40
3.8 Subsystem (MSM8255) ....................................................................... 42
3.9 Power Block ............................................................................................. 48
3.10 External memory interface............................................................. 58
3.11 H/W Sub System.................................................................................. 59
3.12 Audio and sound ................................................................................ 65
3.13 Display..................................................................................................... 73
3.14 Vibrators (Q-Coin Motor) ................................................................. 76
3.15 Compass Sensor.................................................................................. 78
3.16 Motion Sensor...................................................................................... 79
3.17 Main Features....................................................................................... 80
4. TROUBLE SHOOTING .......................................................... 81
4.1 RF Component ....................................................................................... 81
4.2 SIGNAL PATH ........................................................................................... 82
4.3 Checking XO Block................................................................................ 84
4.4 Checking Dual Rx module (FEM + Dual Duplexer) Block...... 87
4.5 Checking WCDMA Block .................................................................... 90
4.6 Checking GSM Block..........................................................................100
4.7 WIFI/BT/FM RF Trouble shooting ..................................................110
4.8 GPS/WIFI/BT RF components.........................................................117
4.9 Power ON Trouble shooting............................................................121
4.10 Charging Trouble shooting...........................................................126
4.11 SIM Detect Trouble shooting.......................................................130
4.12 Motion Sensor on/off Trouble Shooting.................................131
4.13 Compass Sensor on/off trouble shooting..............................133
4.14 Camera troubleshooting ...............................................................135
4.15 Main LCD trouble..............................................................................138
4.16 Proximity Sensor on/off trouble .................................................140
4.17 Touch trouble .....................................................................................142
4.18 Audio trouble.....................................................................................144
5. DOWNLOAD.......................................................................157
6. BLOCK DIAGRAM...............................................................176
7. CIRCUIT DIAGRAM ............................................................180
8. BGA PIN MAP ....................................................................193
9. PCB LAYOUT.......................................................................207
10. CALIBRATION...................................................................216
10.1 General Description.........................................................................216
10.2 Requirement.......................................................................................216
10.3 Setup for RF calibration..................................................................217
10.4 Tachyon Software Installation .....................................................217
10.5 Tachyon Usage...................................................................................218
10.6 Overview of RF Calibration...........................................................223
11. HIDDEN MENU.................................................................227
12. EXPLODED VIEW & REPLACEMENT PART LIST .............244
14.1 EXPLODED VIEW................................................................................244
14.2 Replacement Parts ...........................................................................245
14.3 Accessory .............................................................................................273

- 3 - Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
1. INTRODUCTION
1. INTRODUCTION
1.1 Purpose
This manual provides the information necessary to repair, calibration, description and download the features of
this model.
1.2 Regulatory Information
A. Security
Toll fraud, the unauthorized use of telecommunications system by an unauthorized part (for example, persons
other than your company’s employees, agents, subcontractors, or person working on your company’s behalf)
can result in substantial additional charges for your telecommunications services.
System users are responsible for the security of own system. There are may be risks of toll fraud associated with
your telecommunications system. System users are responsible for programming and configuring the
equipment to prevent unauthorized use. The manufacturer does not warrant that this product is immune from
the above case but will prevent unauthorized use of common carrier telecommunication service of facilities
accessed through or connected to it. The manufacturer will not be responsible for any charges that result from
such unauthorized use.
B. Incidence of Harm
If a telephone company determines that the equipment provided to customer is faulty and possibly causing
harm or interruption in service to the telephone network, it should disconnect telephone service until repair can
be done. A telephone company may temporarily disconnect service as long as repair is not done.
C. Changes in Service
A local telephone company may make changes in its communications facilities or procedure. If these changes
could reasonably be expected to affect the use of the phones or compatibility with the net work, the telephone
company is required to give advanced written notice to the user, allowing the user to take appropriate steps to
maintain telephone service.
D. Maintenance Limitations
Maintenance limitations on the phones must be performed only by the manufacturer or its authorized agent.
The user may not make any changes and/or repairs expect as specifically noted in this manual. Therefore, note
that unauthorized alternations or repair may affect the regulatory status of the system and may void any
remaining warranty.
1. INTRODUCTION

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Only for training and service purposes
LGE Internal Use Only
1. INTRODUCTION
E. Notice of Radiated Emissions
This model complies with rules regarding radiation and radio frequency emission as defined by local regulatory
agencies. In accordance with these agencies, you may be required to provide information such as the following
to the end user.
F. Pictures
The pictures in this manual are for illustrative purposes only; your actual hardware may look slightly different.
G. Interference and Attenuation
A phone may interfere with sensitive laboratory equipment, medical equipment, etc. Interference from
unsuppressed engines or electric motors may cause problems.
H. Electrostatic Sensitive Devices
ATTENTION
Boards, which contain Electrostatic Sensitive Device (ESD), are indicated by the sign.
Following information is ESD handling:
• Service personnel should ground themselves by using a wrist strap when exchange system boards. • When
repairs are made to a system board, they should spread the floor with anti-static mat which is also grounded.
• Use a suitable, grounded soldering iron. • Keep sensitive parts in these protective packages until these are used.
• When returning system boards or parts like EEPROM to the factory, use the protective package as described.

- 5 - Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
1. INTRODUCTION
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΀ΟΝΪΗΠΣΥΣΒΚΟΚΟΘΒΟΕΤΖΣΧΚΔΖΡΦΣΡΠΤΖΤ
ͽ͸ͶͺΟΥΖΣΟΒΝΆΤΖ΀ΟΝΪ 6/140
1.3 Abbreviations
For the purposes of this manual, following abbreviations apply:
Offset Phase Locked LoopOPLL
Light Emitting DiodeLED
Low Drop OutputLDO
Liquid Crystal DisplayLCD
Intermediate FrequencyIF
International Portable User IdentityIPUI
Global System for Mobile CommunicationsGSM
General Purpose Interface BusGPIB
Gaussian Minimum Shift KeyingGMSK
Flexible Printed Circuit BoardFPCB
Electrostatic DischargeESD
Electrical Erasable Programmable Read-Only MemoryEEPROM
Digital Signal ProcessingDSP
dB relative to 1 milli wattdBm
Digital Communication SystemDCS
Digital to Analog ConverterDAC
Constant Current – Constant VoltageCC-CV
Bit Error RatioBER
BasebandBB
Automatic Power ControlAPC
1. INTRODUCTION

- 6 - Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
1. INTRODUCTION
ʹΠΡΪΣΚΘΙΥι ͽ͸ͶΝΖΔΥΣΠΟΚΔΤͺΟΔͲΝΝΣΚΘΙΥΣΖΤΖΣΧΖΕ
΀ΟΝΪΗΠΣΥΣΒΚΟΚΟΘΒΟΕΤΖΣΧΚΔΖΡΦΣΡΠΤΖΤ
ͽ͸ͶͺΟΥΖΣΟΒΝΆΤΖ΀ΟΝΪ 7/140
Wireless Application Protocol
WAP
Voltage Control Temperature Compensated Crystal OscillatorVCTCXO
Voltage Controlled OscillatorVCO
Universal Asynchronous Receiver/TransmitterUART
Time Division Multiple AccessTDMA
Time Division DuplexTDD
Travel AdapterTA
Side Tone Masking RatingSTMR
Pseudo SRAMPSRAM
Static Random Access MemorySRAM
Sending Loudness RatingSLR
Subscriber Identity ModuleSIM
Surface Acoustic WaveSAW
Real Time ClockRTC
Root Mean SquareRMS
Receiving Loudness RatingRLR
Radio FrequencyRF
Public Switched Telephone NetworkPSTN
Phase Locked LoopPLL
Programmable Gain AmplifierPGA
Printed Circuit BoardPCB
Power Amplifier ModulePAM
1. INTRODUCTION

2. PERFORMANCE
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Only for training and service purposes
LGE Internal Use Only
2.1 Product Name
LG-E730 : WCDMA2100/900+EGSM/GSM850/DCS/PCS
(HSDPA 7.2Mbps / HSUPA 2.9Mbps / GPRS Class 12 / EDGE Class 12)
2.2 Supporting Standard
Item Feature Comment
Supporting Standard WCDMA(FDD1,8)/EGSM/GSM850/DCS1800/PCS1900 with
seamless handover
Phase 2+(include AMR)
Frequency Range WCDMA(FDD1) TX : 1920 - 1980 MHz
WCDMA(FDD1) RX : 2110 - 2170 MHz
WCDMA(FDD8) TX : 880 - 915 MHz
WCDMA(FDD8) RX : 925 – 960 MHz
EGSM TX : 880 – 915 MHz
EGSM RX : 925 – 960 MHz
GSM850 TX : 824 – 849 MHz
GSM850 RX : 869 – 894 MHz
DCS1800 TX : 1710 – 1785 MHz
DCS1800 RX : 1805 – 1880 MHz
PCS1900 TX : 1850 – 1910 MHz
PCS1900 RX : 1930 – 1990 MHz
Application Standard Android OS
2.3 Main Parts : GSM Solution
Item Part Name Comment
Digital Baseband MSM8255 : Qualcomm
Analog Baseband PM8058 : Qualcomm
RF Chip QTR8200 : Qualcomm
2. PERFORMANCE

2. PERFORMANCE
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Only for training and service purposes
LGE Internal Use Only
2.4 HW Features
Item Feature Comment
Form Factor BAR type
1) Capacity
Standard : Li-ion, 1500mAh
Battery
2) Packing Type : Soft Pack
Size Standard :
122.5 x 62.5 x 9.7mm
Weight 107g With Battery
Stand by time 2G Up to 400 hrs
3G Up to 375 hrs
@ Paging Period 5 (2G)
@ DRX 7 (3G)
Charging time Within 3 hrs 30min @ Power Off
Talk time 2G Up to 5 hrs
3G Up to 6 hrs
@ Power Level 5 (2G)
@ Tx = 12dBm (3G)
RX sensitivity WCDMA(FDD1) : -106.7 dBm
WCDMA(FDD8) : -106.7 dBm
EGSM : -105 dBm
GSM850 : -105 dBm
DCS 1800 : -105 dBm
PCS 1900 : -105 dBm
WCDMA/
GSM/
GPRS
WCDMA : 24dBm/3.84MHz,+1/-3dBm
EGSM : 33dBm
GSM850 : 33 dBm
DCS1800 : 30 dBm
PCS 1900: 30 dBm
Class3(WCDMA)
Class4 (EGSM)
Class4 (GSM850)
Class1 (PCS)
Class1 (DCS)
TX output
power
EDGE GSM 850 : 27 dBm
GSM 900 : 27 dBm
DCS 1800 : 26 dBm
PCS 1900 : 26 dBm
E2 (GSM850)
E2 (GSM900)
E2 (PCS)
E2 (DCS)
GPRS compatibility GPRS Class 12
EDGE compatibility EDGE Class 12
SIM card type Plug-In SIM
3.3V /1.8V

2. PERFORMANCE
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LGE Internal Use Only
Display Main LCD - AMOLED
(3.8 inch , 800 x 480 )
Built-in Camera 5M CMOS Camera
VGA secondary camera
Status Indicator No
Keypad Touch Screen
Touch Key : 3
Side Key : 3
Side Key : Power On
Volume up/down
ANT Main : Internal Fixed Type
System connector 5 Pin u-USB
Ear Phone Jack 3.5 pi type
PC synchronization Yes
Memory eMMC: 2Gbyte
SDRAM: 4Gbit
Speech coding FR, EFR, HR,AMR
Vibrator Built in Vibrator
Blue Tooth Bluetooth 3.0+HS
MIDI(for Buzzer
Function)
SW Decoded 72Poly
Music Player MP3/WMA/AAC/MIDI/EAAC+/HE AAC/OGG
Video Player MPEG4, H.264
Camcorder MPEG4 or H.263
Voice Recording Yes
Speaker Phone mode
Support
Yes
Travel Adapter Yes
CDROM No
Stereo Headset Yes
Data Cable Yes
T-Flash
(External Memory)
Yes 2GB included (up to 32GB
supported)

2. PERFORMANCE
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LGE Internal Use Only
2.5 SW Features
Item Feature Comment
RSSI 0 ~ 4 Levels
Battery Charging 0 ~ 6 Levels
Key Volume 0 ~ 7 Level
Audio Volume 1 ~ 15 Level
Time / Date Display Yes
Multi-Language Yes CZECH , DUTCH , FRENCH , GERMAN , GREEK ,
ITALIAN , PORTUGUESE , SPANISH , ARABIC ,
HEBREW , T CHINESE TW , S CHINESE ,
ROMANIAN , HUNGARIAN , SLOVAK , CROATIAN ,
BULGARIAN , MACEDONIAN , ICELANDIC
Quick Access Mode Phone / Contacts /
Messaging / Menu
PC Sync Yes
Speed Dial Yes Voice mail center -> 1 key
Profile Yes not same with feature phone setting
CLIP / CLIR Yes
Phone Book Name / Number / Email /
Chat Id / Website / Postal
addresses / Organizations /
Groups / BirthdayNotes /
Ringtone
There is no limitation on the number of items.
It depends on available memory amount.
Last Dial Number Yes There is no limitation on the number of items.
It depends on available memory amount.
Last Received
Number
Yes There is no limitation on the number of items.
It depends on available memory amount.
Last Missed Number Yes There is no limitation on the number of items.
It depends on available memory amount.
Search by Number
/ Name
Name / N
Group Yes There is no limitation on the number of items.
It depends on available memory amount.
Fixed Dial Number Yes
Service Dial Number No