LG lg-d821 User Manual

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Copyright © 2013 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
2. PERFORMANCE ...................................................................... 5
2.1 Product Name ............................................................................................5
2.2 Supporting Standard ..............................................................................5
2.3 Main Parts & Solution .............................................................................6
2.4 HW Features ...............................................................................................6
2.5 SW Features ................................................................................................9
2.6 H/W SPEC. ................................................................................................. 12
2.7 LG-D821 Figures..................................................................................... 29
3. TROUBLE SHOOTING .......................................................... 30
3.1 RF Component ....................................................................................... 30
3.2 SIGNAL PATH ........................................................................................... 33
3.3 Checking XO Block ................................................................................ 37
3.4 Checking RF Front-end Separator .................................................. 40
3.5 Checking RF Block ................................................................................. 43
3.6 GPS Trouble shooting ........................................................................122
3.7 WIFI/BT Trouble shooting .................................................................128
3.8 Audio troubleshooting .....................................................................133
3.9 Camera.....................................................................................................150
3.10 Main LCD trouble ..............................................................................156
3.11 Touch Trouble Shooting .................................................................160
3.12 Vibrator Troubleshooting ..............................................................162
3.13 Gyro/Accel Sensor Troubleshooting .........................................165
3.14 Compass sensor troubleshooting ..............................................167
3.15 Barometer sensor troubleshooting (Pressure Sensor ) ......169
3.16 Proximity Sensor on/o troubleshooting ...............................171
3.17 Light Sensor on/o trouble ..........................................................173
3.18 NFC .........................................................................................................175
3.19 Power ON Troubleshooting ..........................................................178
3.20 Wireless Charging Troubleshooting ..........................................182
3.21 USB Trouble shooting .....................................................................185
3.22 HDMI Troubleshooting ...................................................................188
4. DOWNLOAD .......................................................................192
5. BLOCK DIAGRAM ..............................................................209
6. CIRCUIT DIAGRAM ............................................................223
7. BGA PIN MAP .....................................................................238
8. PCB LAYOUT .......................................................................246
9. CALIBRATION .....................................................................252
10. DISASSEMBLE GUIDE ......................................................271
11. EXPLODED VIEW & REPLACEMENT PART LIST .............281

LG lg-d821 Specifications

General

Brand	LG
Model	lg-d821
Category	Cell Phone
Language	English