LG LG-P698 User manual

Internal Use Only
Service Manual
LG-P698
Date: October, 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................................................................ 20
3.1 GENERAL DESCRIPTION...................................................................... 20
3.2 GSM MODE .............................................................................................. 22
3.3 UMTS MODE............................................................................................ 24
3.4 GPS RECEIVER.......................................................................................... 27
3.5 LO GENERATION and DISTRIBUTION CIRCUIT............................ 27
3.6 OFF-CHIP RF COMPONENTS............................................................. 28
3.7 Digital Baseband(DBB/MSM7227T)............................................... 32
3.8 Hardware Architecture........................................................................ 33
3.9 Subsystem (MSM7227T)..................................................................... 35
3.10 Power Block........................................................................................... 38
3.11 External memory interface............................................................. 43
3.12 H/W Sub System.................................................................................. 44
3.13 Audio and sound ................................................................................ 51
3.14 Display..................................................................................................... 56
3.15 Proximity Sensor................................................................................. 58
3.16 Vibrators (DC Motor).......................................................................... 59
3.17 Compass Sensor.................................................................................. 60
3.18 Motion Sensor...................................................................................... 61
3.19 Main Features....................................................................................... 62
4. TROUBLE SHOOTING .......................................................... 70
4.1 RF Component ....................................................................................... 70
4.2 SIGNAL PATH ........................................................................................... 71
4.3 Checking TCXO Block........................................................................... 74
4.4 Checking GSM PAM Block.................................................................. 76
4.5 Checking WCDMA Block .................................................................... 77
4.6 Checking GSM Block............................................................................ 87
4.7 GPS/WIFI/BT RF Component ............................................................ 94
4.8 GPS/WIFI/BT SIGNAL PATH ................................................................ 96
4.9 GPS/WIFI/BT Trouble shooting ........................................................ 98
4.10 Power ON Trouble Shooting.........................................................103
4.11 Charging Trouble shooting...........................................................106
4.12 3M AF Camera Trouble Shooting ...............................................108
4.13 Main LCD Trouble Shooting .........................................................112
4.14 SIM detect trouble shooting........................................................114
4.15 Proximity Sensor on/off Trouble Shooting.............................117
4.16 Motion Sensor on/off Trouble Shooting.................................119
4.17 Compass Sensor on/off Trouble Shooting .............................121
4.18 DC Motor Trouble Shooting .........................................................123
5. DOWNLOAD.......................................................................125
6. BLOCK DIAGRAM...............................................................144
7. CIRCUIT DIAGRAM ............................................................150
8. BGA PIN MAP ....................................................................158
9. PCB LAYOUT.......................................................................162
10. CALIBRATION...................................................................164
10.1 Configuration of Tachyon..............................................................164
10.2 How to use Tachyon.........................................................................166
11. STAND ALONE TEST ........................................................169
12. ASSEMBLE GUIDE...........................................................176
12.1 Attach Tape Pad Window...............................................................176
12.2 Attach Touch Window.....................................................................177
12.3 Attach LCD to LCD Bracket............................................................178
12.4 Attach LCD module to the front cover.....................................179
12.5 Attach main PCB ...............................................................................180
12.6 Assemble Rear Cover.......................................................................182
12.7 Attach Main Key ................................................................................183
12.8 Battery & Battery Cover..................................................................184
13. DISASSEMBLE GUIDE ....................................................185
13.1 Disassemble Battery Cover...........................................................185
13.2 Disassemble Battery & Screw.......................................................186
13.3 Disassemble Rear Cover.................................................................186
13.4 Disassemble Main PCB ...................................................................187
13.5 Disassemble LCD...............................................................................189
13.6 Complete disassembling P698....................................................190
13.7 Disassemble Shield Can.................................................................191
14. EXPLODED VIEW & REPLACEMENT PART LIST .............193
14.1 EXPLODED VIEW................................................................................194
14.2 Replacement Parts ...........................................................................202
14.3 Accessory .............................................................................................219

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Only for training and service purposes
LGE Internal Use Only
1. INTRODUCTION
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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
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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.

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Only for training and service purposes
LGE Internal Use Only
1. INTRODUCTION
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΀ΟΝΪΗΠΣΥΣΒΚΟΚΟΘΒΟΕΤΖΣΧΚΔΖΡΦΣΡΠΤΖΤ
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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

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Only for training and service purposes
LGE Internal Use Only
1. INTRODUCTION
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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. PERFORMANCE
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2.1 Product Name
LGP690 : WCDMA900/2100+EGSM/GSM850/DCS/PCS
(HSDPA 3.6Mbps 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)
SIM Toolkit : Class 1, 2, 3, C-E
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 Webkit browser 533.1,OMA download 1.0,
OMA push SI/SL, OMA Client Provisioning 1.1
2.3 Main Parts : GSM Solution
Item Part Name Comment
Digital Baseband MSM7227 : Qualcomm
Analog Baseband PM7540 : Qualcomm
RF Chip RTR6285 : Qualcomm
LGP698 : WCDMA850/2100+EGSM/GSM850/DCS/PCS
5
WCDMA(FDD5) TX : 824 – 849 MHz
WCDMA(FDD5) RX : 869 – 894 MHz
WCDMA(FDD1,8)
WCDMA(FDD8) TX : 880 – 915 MHz
WCDMA(FDD8) RX : 925 – 960 MHz
LGP698

2. PERFORMANCE
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Only for training and service purposes
LGE Internal Use Only
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2.4 HW Features
Item Feature Comment
Form Factor DOP type
1) Capacity
Standard : Li-Ion , 1500mAh
Battery
2) Packing Type : Soft Pack
Size Standard :
113 x 59 x 13.3 mm
Weight 121g With Battery
Volume TBD
PCB L1B1 type, 10 Layers , 0.8t
Stand by time 2G Up to 740hrs
3G Up to 555 hrs
@ Paging Period 9 (2G)
@ DRX 7 (3G)
Charging time 3.5 hrs @ Power Off / 1500mAh
Talk time 2G Up to 340mins
3G Up to 430mins
@ Tx=Max(2G)
@ Tx = 12dBm (3G)
RX sensitivity
WCDMA(FDD1) : -106.7 dBm
WCDMA(FDD8) : -103.7 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
DCS 1800 : 30 dBm
PCS 1900 : 30 dBm
Class3(WCDMA)
Class4 (EGSM)
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 12
EDGE compatibility EDGE Class 12
SIM card type Plug-In SIM
3V /1.8V
114 x 59 x 11.7 mm
124.6g
L1F1 type, 8 Layers , 0.8t
5
114 x 59 x 11.7 mm
L1F1 type, 8 Layers , 0.8t
(FDD8)

2. PERFORMANCE
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Only for training and service purposes
LGE Internal Use Only
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Display Main LCD(HVGA)
TFT Main LCD(3.2’, 320 x 480)
Built-in Camera 3M CMOS Camera
Status Indicator No
Keypad Function Key : 4
Side Key : 3
Function Key:
Home, Back, menu,
Search
Side Key :
Volume up, down, power key
ANT Main : Internal Fixed Type
System connector 5 Pin
Ear Phone Jack 3.5Phi, 4 Pole, Stereo
PC synchronization Yes
Memory NAND Flash : 4Gbit
SDRAM : 4Gbit
Speech coding FR, EFR, HR,AMR
Data & Fax Data
Vibrator Built in Vibrator
Blue Tooth V3.0 + EDR
MIDI(for Buzzer Function) SW Decoded 72Poly
Music Player MP3, AAC, AAC+, AAC-LC, AMR-NB, WMA
Video Player MPEG4, H.263
Camcorder MPEG4, 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

2. PERFORMANCE
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LGE Internal Use Only
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2.5 SW Features
Item Feature Comment
RSSI 0 ~ 4 Levels
Battery Charging 0 ~ 6 Levels GSW Power gauge
Key Volume 0 ~ 7 Level
Audio Volume 1 ~ 15 Level
Time / Date Display Yes
Multi-Language Yes English/French/German/Spanish/Italian/Danish/
Dutch/Korean
Quick Access Mode Dialing/ Contact / Menu /
Message / Camera
PC Sync No
Speed Dial No 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/Grou
ps/ 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
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
Own Number Yes Read only
(add/edit/delete are not supported)