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EN_LG-P990_service manual_ENG_110216.pdf

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Internal Use Only Service Manual LG-P990 Date: February, 2011 / Issue 1.0 Table Of Contents 1. INTRODUCTION��������������������������������������������������������������������� 3 4.3 Checking TCXO Block��������������������������������������������������������������������������� 76 1.1 Purpose��������������������������������������������������������������������������������������������������������3 4.4 Checking GSM TX Module(GSM PAM + FEM) Block���������������� 78 1.2 Regulatory Informa
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  Internal Use Only Service Manual LG-P990 Date: February, 2011 / Issue 1.0  - 2 - Copyright © 2011 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only Table Of Contents 1. INTRODUCTION .....................................................................3 1.1 Purpose ........................................................................................................31.2 Regulatory Information .........................................................................31.3 Abbreviations.............................................................................................5 2. PERFORMANCE ......................................................................7 2.1 Product Name ............................................................................................72.2 Supporting Standard ..............................................................................72.3 Main Parts : GSM Solution .....................................................................72.4 HW Features ...............................................................................................82.5 SW Features .............................................................................................102.6 HW SPEC. .................................................................................................132.7 P990 Figures ............................................................................................23 3. TECHNICAL BRIEF ................................................................24 3.1 GENERAL DESCRIPTION ......................................................................243.2 GSM MODE ..............................................................................................263.3 UMTS MODE ............................................................................................293.4 GPS RECEIVER..........................................................................................313.5 LO GENERATION and DISTRIBUTION CIRCUIT............................323.6 OFF-CHIP RF COMPONENTS .............................................................343.7 Digital Baseband(AP20) ......................................................................393.8 Hardware Architecture ........................................................................413.9 Subsystem (PMB9801_X-GOLD  TM 616) ..........................................423.10 Power Block ...........................................................................................473.11 External memory interface .............................................................533.12 Audio and sound ................................................................................543.13 Main (8M pixels) & Sub (1.3M pixels) Camera .........................583.14 Display .....................................................................................................603.15 Vibrators..................................................................................................623.16 HDMI ........................................................................................................633.17 Compass Sensor ..................................................................................643.18 Motion Sensor ......................................................................................653.19 Gyro Sensor ...........................................................................................663.20 Proximity Sensor .................................................................................673.21 Illumination Sensor ............................................................................683.22 Touch Module ......................................................................................693.23 Main Features .......................................................................................70 4. TROUBLE SHOOTING ..........................................................71 4.1 RF Component .......................................................................................714.2 SIGNAL PATH ...........................................................................................734.3 Checking TCXO Block ...........................................................................764.4 Checking GSM TX Module(GSM PAM + FEM) Block ................784.5 Checking WCDMA Block ....................................................................814.6 Checking GSM Block ............................................................................934.7 GPS/WIFI/BT RF Component ..........................................................1014.8 GPS/WIFI/BT SIGNAL PATH ..............................................................1034.9 Power ON Troubleshooting .............................................................1054.10 Charger Troubleshooting ..............................................................1084.11 USB Trouble shooting .....................................................................1114.12 Audio trouble .....................................................................................1164.13 Camera trouble(8M/1.3M) .............................................................1274.14 Main LCD trouble ..............................................................................1314.15 SIM detect Trouble shooting ........................................................1334.16 Side Key Trouble shooting ............................................................1374.17 Vibrator Troubleshooting ..............................................................1394.18 HDMI Troubleshooting ...................................................................1414.19 Motion Sensor on/off trouble ......................................................1434.20 Gyro/Compass sensor troubleshooting ..................................1454.21Proximity Sensor on/off trouble ..................................................1484.22 Illumination Sensor on/off trouble ............................................1504.23 Touch trouble .....................................................................................152 5. DOWNLOAD .......................................................................1546. BLOCK DIAGRAM ...............................................................1677. CIRCUIT DIAGRAM ............................................................1738. BGA PIN MAP ....................................................................1889. PCB LAYOUT .......................................................................19810. CALIBRATION ...................................................................204 10.1 Configuration of Tachyon ..............................................................20410.2 How to use Tachyon .........................................................................206 11. STAND ALONE TEST ........................................................20912. EXPLODED VIEW & REPLACEMENT PART LIST .............224 12.1 EXPLODED VIEW ................................................................................22412.2 Replacement Parts ...........................................................................22512.3 Accessory .............................................................................................259  - 3 - Copyright © 2011 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only 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 byan 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 notwarrant 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 tocustomer 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 communicationsfacilities 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  - 4 - Copyright © 2011 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE 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 Phone may interfere with sensitive laboratory equipment, medicalequipment, etc.Interference from unsuppressed engines or electric motors may cause problems. H. Electrostatic Sensitive Devices ATTENTION Boards, which contain Electrostatic Sensitive Device (ESD), are indicatedby the sign. Following information is ESD handling: ãService personnel should ground themselves by using a wrist strap when exchange system boards.ãWhen repairs are made to a system board, they should spread thefloor with anti-static mat which is also grounded.ãUse a suitable, grounded soldering iron.ãKeep sensitive parts in these protective packages until these are used.ãWhen returning system boards or parts like EEPROM to the factory, use the protective package as described.
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