LG LGV909DW User manual

Internal Use Only
Service Manual
LG-V909DW
Date: March, 2011 / Issue 1.0

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............................................................................................. 11
2.6 HW SPEC. ................................................................................................. 14
2.7 V909DW Figures..................................................................................... 23
3. TECHNICAL BRIEF................................................................ 24
3.1 GENERAL DESCRIPTION...................................................................... 24
3.2 GSM MODE .............................................................................................. 27
3.3 UMTS MODE ........................................................................................... 29
3.4 GPS RECEIVER.......................................................................................... 32
3.5 LO GENERATION and DISTRIBUTION CIRCUIT............................ 33
3.6 OFF-CHIP RF COMPONENTS............................................................. 35
3.7 Hardware Architecture........................................................................ 36
3.8 Subsystem(MDM6200) ....................................................................... 37
3.9 Power Block ............................................................................................. 40
3.10 External memory interface............................................................. 42
3.11. Audio and sound ............................................................................... 43
3.12 Main (5M pixels dual) & Front (2M pixels) Camera................ 48
3.13 Display..................................................................................................... 50
3.14 HDMI........................................................................................................ 51
3.15 Compass Sensor.................................................................................. 52
3.16 Motion Sensor...................................................................................... 53
3.17 Gyro Sensor........................................................................................... 55
3.18 Illumination Sensor............................................................................ 56
3.19 Touch Module ...................................................................................... 57
3.20 Main Features....................................................................................... 58
4. TROUBLE SHOOTING .......................................................... 59
4.1 MODEM PICTURE .................................................................................. 59
4.2 Signal Path ............................................................................................... 61
4.3 Power On Trouble shooting.............................................................. 63
4.4 WCDMA Transmit block...................................................................... 71
4.5 GSM Receiver Block.............................................................................. 76
4.6 WCDMA Receiver Block ...................................................................... 79
4.7 WIFI/BT RF components ..................................................................... 82
4.8 WIFI/BT RF components ..................................................................... 83
4.9 Power ON Troubleshooting............................................................... 84
4.10 Charger troubleshooting................................................................. 85
4.11 USB Trouble shooting ....................................................................... 86
4.12 Audio troubleshooting..................................................................... 89
4.13 Camera Troubleshooting................................................................. 97
4.14 Main LCD trouble..............................................................................102
4.15 GPS Troubleshooting ......................................................................104
4.16 Key troubleshooting........................................................................107
4.17 HDMI trouble......................................................................................108
4.18 Motion sensor troubleshooting..................................................109
4.19 Gyro/Compass sensor troubleshooting..................................111
4.20 Illumination Sensor on/off trouble............................................114
4.21 Touch trouble .....................................................................................116
5. DOWNLOAD.......................................................................118
6. BLOCK DIAGRAM...............................................................137
7. CIRCUIT DIAGRAM ............................................................151
8. BGA Pin Map......................................................................175
9. PCB LAYOUT.......................................................................183
10. Calibration & RF Auto Test Program (Tachyon)............205
11. Hidden Menu...................................................................210
12. EXPLODED VIEW & REPLACEMENT PART LIST .............226
12.1 EXPLODED VIEW................................................................................226
12.2 Replacement Parts ...........................................................................227
12.3 Accessory .............................................................................................271
- 2 - Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only

- 3 - 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 4/110
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 this phone or compatibility with the
network, 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 this model 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
1. INTRODUCTION

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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 5/110
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
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.
1. INTRODUCTION

- 5 - 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 6/110
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 7/110
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
3
2.1 Product Name
V909DW : WCDMA900/AWS/2100+ GSM850/DCS/PCS
(HSUPA 5.76Mbps/HSDPA 14.4Mbps / GPRS Class 10 / EDGE Class 10)
2.2 Supporting Standard
Item Feature Comment
Supporting
Standard
WCDMA(FDD1,4,8)/GSM850/DCS1800/PCS1900
with seamless handover
3GPP Rel7.
SIM Toolkit : Class 1, 2, 3, C-E
Frequency Range WCDMA(FDD1) TX : 1920 – 1980 MHz
WCDMA(FDD1) RX : 2110 – 2170 MHz
WCDMA(FDD4) TX : 1710 – 1755 MHz
WCDMA(FDD4) RX : 2110 – 2155 MHz
WCDMA(FDD8) TX : 880 – 915 MHz
WCDMA(FDD8) 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
WAP 2.0
2.3 Main Parts : GSM Solution
Item Part Name Comment
Digital Baseband MDM6200 : Qualcomm
Analog Baseband MDM6200 : Qualcomm One chip
RF Chip MDM6200 : Qualcomm One chip
2. PERFORMANCE

2. PERFORMANCE
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Only for training and service purposes
LGE Internal Use Only
4
2.4 HW Features
Item Feature Comment
Form Factor DOP type
Size Standard :
243×149.4× 12.8mm
Weight TBD With Battery
Volume TBD
Battery 1) Capacity
Li-Ion Polymer, 6400mAh
2) Norminal Voltage : 3.7V
3) Temperature Range
Charge : 0 ~ 45୅
Discharge : -20 ~ 60୅
Storage
1 month : -20 ~ 60୅
3 month : -20 ~ 45୅
4) Weight : less than 160g
Stand by time 2G Up to 350 hrs
3G Up to 350 hrs
@ Paging Period 9 (2G)
@ DRX 7 (3G)
Charging time 6 hrs 20min @ Sleep / 64000mAh
Talk time N.A
RX sensitivity WCDMA(FDD1) : -106.7 dBm
WCDMA(FDD4) : -106.7 dBm
WCDMA(FDD8) : -106.7 dBm
GSM850 : -105 dBm
DCS 1800 : -105 dBm
PCS 1900 : -105 dBm
WCDMA/
GSM/
GPRS
WCDMA : 24dBm/3.84MHz,+1/-3dBm
GSM850 : 33 dBm
DCS 1800 : 30 dBm
PCS 1900 : 30 dBm
Class3(WCDMA)
Class4 (GSM850)
Class1 (PCS)
Class1 (DCS)
TX output
power
EDGE GSM 900 : 27 dBm
DCS 1800 : 26 dBm
PCS 1900 : 26 dBm
E2 (GSM900)
E2 (PCS)
E2 (DCS)
GPRS compatibility GPRS Class 10
EDGE compatibility EDGE Class 10
SIM card type Push-Push SIM
3V /1.8V

2. PERFORMANCE
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Only for training and service purposes
LGE Internal Use Only
5
Display Main LCD(WXGA)
TFT Main LCD(8.9’, 1280 x 768)
- Active screen size : 8.9 inch
- Mode : AH-IPS
- Resolution : 1280 X RGB X 768
- Interface : LVDS
- Color depth : 8 bit (6 bit + FRC)
- Pixel pitch : 50.5(H) X 151.5(V)
- Active area : 193.92X116.35 (mm)
- Outline dimension
207.0(H) X 130.4(V) mm
- Thickness : Typ 3.2t / Max 5.2t
- Viewing angle : 85/85(typ)
- Luminance : 368 nit
- Color gamut : 50%
- Contrast ratio : 800:1 (Typ)
- Response time : 35ms
- Number of LED : 28 (4chain X 7)
- Operating temp : -10~60୅
Camera 1) 5M stereo scopic module
- Sony IMX 072 sensor
- MIPI CSI2 interface, I2C control
- 2.4 degree tilt spec
- Operating voltage
1.2V Digital core, 2.7V Analog
1.8V interface, 2.8V VCM
- LED flash
- Total number of pixel
2664(H) X 2000(V) approx. 5.33M
Effective pixels
2616(H) X 1968(V) approx. 5.15M
Active pixels
2608(H) X 1960(V) approx.. 5.11M
- Operating tempetature
-10~60୅
- Storage temperature
-30~80୅
- Performance guarantee
-10~60୅
2) 2M VGA camera
- For VT conference
- Do not support snapshot
- Parallel interface
- 1/5 inch
- Effective resolution
1600(H) X 1200(V)
- Active resolution

2. PERFORMANCE
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LGE Internal Use Only
6
1616(H) X 1216(V)
- Max capture frame rate
15fps@full resolution
30fps@VGA
- Max pixel clock frequency : 70MHz
- Max Pixel rate : 35Mp/s
- Operating temperature : -20~60୅
- Max pixel clock frequency : 70MHz
- Max Pixel rate : 35Mp/s
- Operating temperature : -20~60୅
Status Indicator No
Keypad Side Key : 3 Side Key :
Volume up,down, power
key
ANT Main : FIFA
Sub : FPCB type
System connector 5 Pin Micro USB
HDMI
Ear Phone Jack 3.5Phi, 4 Pole, Stereo
PC synchronization Yes
Memory(AP) eMMC : 32GB
LP-DDR2 : 1GB
Speech coding AMR,PCM,WAV,SBC
Data & Fax Built in Data & Fax support
Vibrator NA
BlueTooth V2.1 + EDR
MIDI(for Buzzer
Function)
SW Decoded 72Poly
Music Player MP3/ WMA/AAC/AAC-LC/eAAC+
Video Player MPEG4, H.264, WMV9, DiVX, XviD
MPEG2
Camcorder MPEG4, H.264, H.263
Voice Recording Yes
Speaker Phone mode
Support
Yes
Travel Adapter 1) AC Input Voltage : 110 ~ 240Vac
2) DC Output Voltage : 5.2V
(-0.3V, +0.2V)
3) DC Output Current : 2000mA
CDROM No
Stereo Headset Yes(But, does not inbox)
Data Cable Yes
T-Flash
(External Memory)
No(doesn’t support socket)