LG Nexus 5 Service Manual

							Internal Use Only
Service Manual
LG-D821
Date: September, 2013 / Issue 0.9 
						

							- 2 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE 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/off troubleshooting  ...............................171
3.17 Light Sensor on/off 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   
						

							- 3 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only
1. INTRODUCTION
1. INTRODUCTION1. Introduction 
This manual provides the information necessary to repair, calibration,  description and download the features 
of this model.  
1. 1 Purpose 
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.   
1. 2 Regulatory Information 
A. Security 
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 Limitation 
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.    
						

							- 4 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only
1. INTRODUCTION
1. Introduction 
3 
E. Notice of Radiated Emission  
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.  
ATTENTION   
H. Electrostatic Sensitive Devices   
Boards, which contain Electrostatic Sensitive Device (ESD), are indicated by the  
sign. information is ESD handling: Following   
   
• 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.   
   
A phone may interfere with sensitive laboratory equipment, medical equipment, etc. Interference from 
unsuppressed engines or electric motors may cause problems. 
 
G. Interference and Attenuation 
F. Pictures
 
The pictures in this manual are for illustrative purposes only; your actual hardware may look slightly 
different.    
						

							2. PERFORMANCE
- 5 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only
2. PERFORMANCE
2.1 Product Name
LG-D821 :  
WCDMA(B1,B2,B4,B5,B8)(HSPA+42Mbps(cat24)/ HSUPA 5.8Mbps(cat6) + GSM850/GSM900/DCS/PCS (GPRS Class10/EDGE 
Class10)+ FDD LTE (B1, B3, B5, B7, B8, B20) (DL:102Mpbs, UL:51.0Mbps, Max DL MIMO layers = 2, Release8(Cat3))
2.2 Supporting Standard
LG-D821 Product SPEC
4
2.1 Product Name   
LG-D821  :WCDMA(B1,B2,B4,B5,B8)(HSPA+42Mbps(cat24)/ HSUPA  5.8Mbps(cat6)  
+ GSM850/GSM900/DCS/PCS (GPRS Class10/EDGE Class10)+ FDD LTE (B1, B3, B5, B7, B8, B20)   
(DL:102Mpbs, UL:51.0Mbps, Max DL MIMO layers = 2, Release8(Cat3))   
2.2 Supporting Standard  
Item  Feature  Comment 
Supporting Standard  WCDMA(FDD1
,2, 4,5,8) 
/EGSM/ GSM850 /DCS1800/PCS1900  with seamless 
handover    
 
Frequency Range
 WCDMA(FDD1
) TX : 1920 –  19 80 MHz  
WCDMA(FDD1 ) RX : 2110 –  2170  MHz  
WCDMA (FDD2) TX  :  1 850  –  1 910  MHz  
WCDMA(FDD 2) RX  :  1930  –  1990  MHz  
WCDMA(FDD4) TX : 1710  – 1755 MHz  
WCDMA(FDD4) RX : 211 0 – 2155 MHz  
WCDMA(FDD5) TX : 824  – 849 MHz  
WCDMA(FDD5) RX : 869  – 894 MHz  
WCDMA(FDD 8) TX : 880  –  915  MHz  
WCDMA(FDD 8) RX : 925  –  960  MHz  
E GSM TX  : 8 80  –  915  MHz  
E GSM RX  : 925  –  960  MHz  
GSM850 TX  : 824 – 849 MHz  
GSM850 RX  : 869 – 894 MHz  
GSM900 TX          : 880  –  915 MHz  
GSM900 RX          : 925  – 960 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. PERFORMANCE
- 6 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only
LG-D821 Product SPEC
5
2.3 Main Parts  & Solution 
Item  Part Name  Comment 
Digital Baseband   AP Q8064  :  Qualcomm    
Analog Baseband MDM9215M : Qualcomm    
RF Chip   WTR1605L :  Qualcomm    
2.4 HW Features  
Item  Feature  Comment 
Form Factor   DOP type    
Battery   1) Capacity
 
Standard :  Li-Ion Polymer , 2300mAh   
 
2) Packing Type :  Soft Pack   Embeded 
Size   Standard :
 
133.9 x 68.7 x 9.1  (unit : mm)   
 
Weight   139.5  g   with Battery  
PCB   FR4, 10 Layers , 0.8t   
Stand by time   CDMA Up to 350 hrs
 
GSM Up to 350 hrs  
WCDMA Up to 350 hrs  
LTE Up to 350 hrs   @ SCI2 (CDMA)
 
@ Paging Period 5 (GSM)  
@ DRX 7 ( WCDMA)  
@ DRX7  (LTE)  
Charging time   3 hrs 30min  @ Power Off 
Talk time   CDMA Up to 690 min
 
GSM Up to 405 min  
WCDMA Up to 530min  
LTE Up to 230 min  @ Tx= 10dBm (CDMA)
 
@ TX=LV5(EGSM)  
@ Tx = 10dBm ( WCDMA)  
@ Tx = 10dBm (LTE )  
RX sensitivity   WCDMA(FDD1) : 
-10 8 dBm  
WCDMA(FDD2)  :  -10 8 dBm  
WCDMA(FDD2) :  -108  dBm  
WCDMA(FDD5) :  -10 8 dBm  
WCDMA(FDD8 ) : -108  dBm  
EGSM                  :  -108  dBm  
GSM850              :  -108  dBm  
DCS 1800            :  -108  dBm    
LG
-D821 Product SPEC
5
2.3 Main Parts  & Solution 
Item  Part Name  Comment 
Digital  Baseband   AP Q8064  :  Qualcomm    
Analog Baseband  MDM9215M : Qualcomm    
RF  Chip   WTR1605L :  Qualcomm    
2.4 HW Features  
Item  Feature  Comment 
Form Factor   DOP type    
Battery  1) Capacity
 
Standard :  Li-Ion Polymer , 2300mAh   
 
2) Packing Type : 
Soft Pack   Embeded 
Size  Standard :
 
133.9 x 68.7 x 9.1  (unit : mm)   
 
Weight
  139.5  g   with Battery  
PCB  FR4, 10 Layers , 0.8t   
Stand by time  CDMA Up to 350 hrs
 
GSM Up to 350 hrs  
WCDMA Up to 350 hrs  
LTE Up to 350 hrs   @ SCI2 (CDMA)
 
@ Paging Period 5 (GSM)  
@ DRX 7 ( WCDMA)  
@ DRX7  (LTE)  
Charging time   3 hrs 30min  @ Power Off 
Talk time  CDMA Up to 690 min
 
GSM Up to 405 min  
WCDMA Up to 530min  
LTE Up to 230 min  @ Tx= 10dBm (CDMA)
 
@ TX=LV5(EGSM)  
@ Tx = 10dBm ( WCDMA)  
@ Tx = 10dBm (LTE )  
RX sensitivity  WCDMA(FDD1) : 
-10 8 dBm  
WCDMA(FDD2)  :  -10 8 dBm  
WCDMA(FDD2) :  -108  dBm  
WCDMA(FDD5) :  -10 8 dBm  
WCDMA(FDD8 ) : -108  dBm  
EGSM                  :  -108  dBm  
GSM850              :  -108  dBm  
DCS 1800            :  -108  dBm    
2.4 HW Features
2.3 Main Parts & Solution  
						

							2. PERFORMANCE
- 7 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only
LG-D821 Product SPEC
6
PCS 1900            :  -108  dBm  
TX output power   WCDMA/
 
 
 
 
GSM/  
GPRS   WCDMA 
B1,2, 4,8  : 
2 4dBm/3.84MHz,+1/ -
3dB m 
WCDMA B5  : 
2 3.5dBm/3.84MHz,+1/ -
3dBm  
EGSM                : 32.5 dBm 
GSM850            : 3 2.5 dBm  
DCS 1800          : 30 dBm  
PCS 1900          :  30 dBm  
 
GPRS 
compatibilit
y  EDGE
  EGSM     
         : 26 dBm  
GSM850              :26  dBm  
DCS 1800            : 25 dBm  
PCS 1900            : 25  dBm  Class3( WCDMA)
 
C lass4 (EGSM)  
Class4 (GSM850)  
Class1 (PCS)  
Class1 (DCS)  
GPRS Class 
12    E2 (
GSM900 ) 
E2 (PCS)  
E2 (DCS)  
EDGE compatibility   GPRS Class 12    
SIM card type  Plug
-In SIM  
3V /1.8V    
Display
  Main LCD
 
IPS TFT Main LCD  
(5.0”,    1920 X 1080 Pixels)   
 
Built
-in Camera   8M AF + 1.3M VT   
Status Indicator  Yes   
Keypad  Full Touch Screen 
Side Key : 3   Side Key : Power On
 
Volume up/down  
ANT  Main : Internal Fixed Type   
System connector  5 Pin u-USB    
Ear Phone Jack  3.5Phi,   
PC synchronization  Yes   
Memory(AP)  16Gb(SDRAM DDR2)      
						

							2. PERFORMANCE
- 8 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only
LG-D821 Product SPEC
7
+ 16GB eMMC  
Speech coding   FR, EFR, HR,AMR   
Vibrator  Built in Vibrator   
BlueTooth  Bluetooth 3.0   
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)   No
   
    
  
 
 
 
 
 
 
 
 
 
 
 
 
    
						

							2. PERFORMANCE
- 9 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only
LG-D821 Product SPEC
8
2.5 SW Features  
Item  Feature  Comment 
RSSI  0 ~4   Levels    
Battery Charging  0 ~ 7  Lev els   
Key Volume  0 ~ 7   Level    
Audio Volume  0 ~ 15   Level    
Time / Date Display  Yes   
Multi-Language   Yes  English, Espanol, Franch, 
Korea , Chinese , etc 
Quick Access Mode  Camera/Chrome/App/Message/Phone   
PC Sync  No   
Speed Dial  Yes  Voice mail center -> 1  key 
Profile   Yes  not same with feature phone 
setting 
CLIP / CLIR   Yes   
Phone Book Name / Number / Email /Organization/ 
Website / Postal addresses /Events/   
Note / IM / Nickname / Internet call/ 
Group   
Last Received
 
Number   Yes
  There is no limitation on th
e 
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 / Number
   
Group  Yes  There is no limitation on the 
number  of items.  
It depends on available  memory amount.  
2.5 SW Features   
						

							2. PERFORMANCE
- 10 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only
LG-D821 Product SPEC
9
Fixed Dial Number   Yes   
Service Dial Number  No   
Own Number  Yes  Read / Write  
Voice Memo   No   
Call Reminder  No   
Network Selection  Automatic   
Mute  Yes   
Call Divert  Yes   
Call Barring  No   
Call Charge (AoC)  No   
Call Duration  No   
SMS (EMS)  There is no limitation on the number of 
items. 
It depends on available memory  amount.  EMS does not support. 
SMS Over GPRS
  Yes   
EMS Melody / Picture 
Send / Receive / Save   No
 
No    
MMS MPEG4
 
Send / Receive / Save   TBD
   
Long Message   Yes   
Cell Broadcast  Yes   
Download  Yes   
Game  Yes   
Calendar  Yes   
Memo  No   
World Clock  No   
Unit Convert  Yes   
Stop Watch  Yes   
Wall Paper  No   
WAP Browser  Yes  WAP stack and wml are not 
supported.  
Download Melody /  
Wallpaper    
Over web browser