LG LG-D620 User manual

Internal Use Only
Service Manual
LG-D620
Date: April, 2014 / Issue 1.0

- 2 - Copyright © 2014 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 Specications............................................................................................5
2. PERFORMANCE.................................................................... 10
2.1 Product Name......................................................................................... 10
2.2 Supporting Standard........................................................................... 10
2.3 Main Parts : Main Chipset Solution................................................ 11
2.4 HW Features ............................................................................................ 10
2.5 SW Features............................................................................................. 14
2.6 HW SPEC ................................................................................................... 26
3. TROUBLE SHOOTING .......................................................... 37
3.1 Checking XO Block................................................................................ 37
3.2 Checking Transceiver DC Power Supply Circuit Block............ 39
3.3 Checking DC-DC Block........................................................................ 41
3.4 Checking FEMiD Block (GSM, W B1/2/5/8, LTE B1/2/3/7/8/20)
.............................................................................................................................. 43
3.5 GSM RF Part ............................................................................................. 45
3.6 WCDMA RF Part...................................................................................... 59
3.7 LTE RF Part................................................................................................ 87
3.8 BT&WIFI PART........................................................................................120
3.9 GPS Part...................................................................................................124
3.10 Power.....................................................................................................130
3.11 Charger .................................................................................................136
3.12 Audio .....................................................................................................138
3.13 LCD .........................................................................................................151
3.14 Touch .....................................................................................................153
3.15 Sensor....................................................................................................155
3.16 USB .........................................................................................................159
3.17 Camera..................................................................................................161
4. DOWNLOAD.......................................................................164
5. BLOCK DIAGRAM...............................................................181
6. CIRCUIT DIAGRAM ............................................................189
7. BGA PIN MAP ....................................................................205
8. PCB LAYOUT.......................................................................212
9. CALIBRATION.....................................................................216
10. HIDDEN MENU................................................................. 235
11. DISASSEMBLE GUIDE......................................................242
12. EXPLODED VIEW & REPLACEMENT PART LIST .............246
12.1 Exploded View ...................................................................................246
12.2 Replacement Parts...........................................................................247
12.3 Accessory .............................................................................................281

- 3 - Copyright © 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
1. INTRODUCTION
1. Introduction
1. 1 Purpose
This manual provides the information necessary to repair, calibration, description and download the features
of this model.
ll f d h h d f l b h d f l
1. 2 Regulatory Information
A. Security
T
o
ll
f
rau
d
, t
h
e unaut
h
orize
d
use o
f
te
l
ecommunications system
b
y an unaut
h
orize
d
part (
f
or examp
l
e,
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 l h d i h h i id d i f l d ibl
If
a te
l
ep
h
one company
d
eterm
i
nes t
h
at t
h
e equ
i
pment prov
id
e
d
to customer
i
s
f
au
l
ty an
d
poss
ibl
y
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
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
p
hones must be
p
erformed onl
y
b
y
the manufacturer or its authorized a
g
ent.
1
p p y y g
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 © 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
1. INTRODUCTION
1. Introduction
E. Notice of Radiated Emission
This model complies with rules regarding radiation and radio frequency emission as defined by local
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
d ff
H. Electrostatic Sensitive Devices
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
d
i
ff
erent.
ATTENTION
Boards, which contain Electrostatic Sensitive Device (ESD), are indicated by the
sign information is ESD handling: Following
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.
2

2. PERFORMANCE
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Only for training and service purposes
LGE Internal Use Only
1. Introduction
1. 3. Specifications
KEY FEATURES
• Android 4.4.2 - Powered Smartphone
• Up to 7 Customizable Home Screens
• 4.7” Touch Screen
• 8MP AF with flash, VGA VT Image sensor
• 4G Mobile Hotspot
• DivX® H.264, H.263 Capable
ENHANCED USER EXPERIENCE
• Android 4.4.2
• Home Screens – customize 5 or 7 screens with shortcuts to apps, favorites, and widgets
• QWERTY Keyboard with Swype® – use one continuous finger motion to input text when composing a
message
message
• Exchange Support – improved security, remote wipe capability for Exchange administrators, support for
Exchange calendars in the Calendar application, auto-discovery for easy setup and syncing of an
Exchange account,* and Global Address Lists lookup in the Email application
• Proximity Sensor – locks the touch screen and buttons while talking on the phone
• Motion Sensor – Digital compass , Accelerometer
• USB Charging via Computer
• Airplane Mode (RF Off)
*Available for Exchange 2007 and higher.
DESIGN
• Sleek and Stylish Design
• 4.7” qHD Display
Capacitive Touch Screen
Glass with fast and accurate response
•
Capacitive
Touch
Screen
–
Glass
with
fast
and
accurate
response
• Touch Vibration for Tactile Feedback*
• Micro USB Charging Port
*Only available on certain interactions with the touch screen.
MOBILE MEDIA
• Android Market™ – browse and download thousands of free and paid apps from around the world†
3
• Live Wallpaper – dynamic, animated backgrounds
1.3 Specications

2. PERFORMANCE
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Only for training and service purposes
LGE Internal Use Only
1. Introduction
• Full Web Browsing
• Connect to Social Networks – send quick updates to Twitter™, Facebook®, MySpace™,* or added
social networks†
• Mobile Instant Messaging – Google Talk™, AIM®,* Yahoo!® Messenger,* Windows Live™*†
• Gmail™ and Email – mobile personal and corporate email†
• Visual Voice Mail†
• Text, Picture, Video, and Voice Messaging†
• Flash 10.1 for Mobile Devices
J S t
CAMERA/VIDEO
•
J
ava
S
uppor
t
*Applications downloaded from Android Market.
• 8MP AF with flash, VGA VT CMOS Image sensor and Camcorder*
• Camera Resolutions: 8M(3264 x 2448), W6M(3264 x 1836), 5M(2560 x 1920), 1M(1280 x 960)
• Camera and Video Zoom: up to 4x
• Image Editor: Zoom, Exposure, Artistic Effect, Color, Adjustment
• Brightness, ISO, White Balance,* Color Effects, Scene Mode, Self-Timer
• Continuous Shot – take 6 shots in quick succession
• Video Resolutions: FHD(1920 x 1080)(30fps), HD(1280 x 720), QVGA(320 x 240)(MMS),
QC ( )( S)
QC
IF
(
176 x 144
)(
MM
S)
• Video Recording Time: up to 60 seconds (sending) or 120 minutes (saving)**
*Available in both video and camera modes.
**Depends on available memory.
MULTIMEDIA
• Video Player for AVI, WMV, MP4, MKV, 3GP, and 3G2 Formats
• Music Player for MP3, WMA, and Unprotected AAC
• Stereo Sound via Headset or Bluetooth
• Multitask While Playing Music in the Background
4
• Music Library – Organized by Artists, Albums, Songs, Genres, Folders and Playlists
• Repeat and Shuffle Music Playback Modes

2. PERFORMANCE
- 7 - Copyright © 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
1. Introduction
• microSD Memory Slot with Support for up to 32GB Storage
•
USB Mass Storage
transfer files between microSD
™
card and PC
*
•
USB
Mass
Storage
–
transfer
files
between
microSD
card
and
PC
*USB cable (sold separately) and microSD card (included) required.
BLUETOOTH®
• Version: 4.0
• Save up to 100 Bluetooth Pairings*
S t d P fil h d t h d
f bj t h d d di di t ib ti ( t ) di / id
•
S
uppor
t
e
d
P
ro
fil
es:
h
ea
d
se
t
,
h
an
d
s-
f
ree, o
bj
ec
t
pus
h
, a
d
vance
d
au
di
o
di
s
t
r
ib
u
ti
on
(
s
t
ereo
)
, au
di
o
/
v
id
eo
remote control, file transfer, phone book access, message access, serial port
• Listen to Music with Optional Stereo Bluetooth Headset**
• Send User-Generated Pictures (JPEG) and Videos via Bluetooth Wireless Technology
*Depends on available memory.
**Accessories sold separately.
VOICE/AUDIO
• One-Touch Speakerphone*
• Wide Voice Extension*
• Voice Clarity*
•
Voice Commands
•
Voice
Commands
• Voice-Activated Dialing
• Text to Speech
• MP3 Music Ringer Support (clips from hit songs)†
• Voice Memo Recording
• 20 Unique Ringtones + Vibrate and Silent Modes
TOOLS & DATA
• Hearing Aid Compatible M3/T3
*Only available during a call.
5
•Android Apps: Browser, Calculator, Calendar (Corporate or Google), Camera, Clock, Contacts, Email, Gallery,
Gmail, Market, Messaging, Music, Phone, Settings, Voice Dialer, Voice Recorder, Voice Search
•Wi-Fi Connectivity – IEEE 802.11b/g/n

2. PERFORMANCE
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Only for training and service purposes
LGE Internal Use Only
• Phone Book – unlimited fields* for numbers, emails, physical addresses, IM screen names, notes,
nickname
,
web addresses
,
s
p
ecial dates
,
and a
p
icture ID**
1. Introduction
, , p , p
• FOTA Capable – upgrade rmware over the air†
• GNSS and A-GPS Support for Enhanced Location Accuracy
*Depends on available memory.
**Dependent on photos stored in your gallery.
SPECIFICATIONS
•Technology: GSM/ WCDMA /LTE/GPS/BT/WiFi
•Frequencies:
Support Band TX Freq (MHz) RX Freq (MHz)
GSM850 824-849 869-894
GSM900 880-915 925-960
DCS1800 1710-1785 1805-1880
PCS1900 1850-1910 1930-1990
W2100(B1) 1920-1980 2110-2170
W1900(B2) 1850-1910 1930-1990
W850(B5) 824-849 869-894
W900(B8) 880-915 925-960
LTE B1 1920-1980 2110-2170
LTE B3 1710-1785 1805-1880
LTE B7 2500-2570 2620-2690
LTE B8 880-915 925-960
LTE B20 832-862 791-821
BT/WiFi 2400 MHz ~ 2483.5 MHz
GPS 1574.42 MHz ~ 1576.42 MHz

2. PERFORMANCE
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Only for training and service purposes
LGE Internal Use Only
•Data Transmission: EDGE, GPRS (Class 33) , HSPA+(Cat. 24), LTE(Cat 4)
• Dimensions: 129.6
(
H
)
x 66.0
(
W
)
x 9.9
(
D
)
(
mm
)
( ) ( ) ( ) ( )
• Weight: 121g ( with Battery)
• Display: 4.7”, qHD 960 x 540 pixels, TFT
• Standard Battery: 2,440[mAh]
• Internal Memory Size: 4 GB
• MicroSD™ Memory Slot: up to 32GB memory card*
ACCESSORIES
• Standard Battery*
• Travel Adapter and USB Data Cable*
• Bluetooth Headset (Optional)
• Bluetooth Hands-free kit (Optional)
• Stereo Headset (Optional)
• Vehicle Power Charger (VPC) (Optional)
• Quick Window Cover (Optional)
7

2. PERFORMANCE
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LGE Internal Use Only
2. PERFORMANCE
2. 1 Product Name
LG-D620
2. 2 Supporting Standard
Item Feature Comment
Supporting Standard
LTE(FDD1/3/7/8/20)+WCDMA(FDD1/2/5/8)
+EGSM/GSM850/DCS/PCS
with seamless handover
Phase 2+(include AMR)
(LTE Cat. 3 / HSDPA Cat. 24 / HSUPA Cat.6 / EDGE,GPRS
Multislot class 33)
Frequency Range
LTE(FDD1) TX: 1920 – 1980 MHz
LTE(FDD1) RX: 2110 – 2170 MHz
LTE(FDD 3) TX : 1710 – 1785 MHz
LTE(FDD 3) RX : 1805 – 1880 MHz
LTE(FDD 7) TX : 2500 – 2570 MHz
LTE(FDD 7) RX : 2620 – 2690 MHz
LTE(FDD8) TX : 880 – 915 MHz
LTE(FDD8) RX : 925 – 960 MHz
LTE(FDD 20) TX : 832 – 862 MHz
LTE(FDD 20) RX : 791 – 821 MHz
WCDMA(FDD1) TX: 1920 – 1980 MHz
WCDMA(FDD1) RX: 2110 – 2170 MHz
WCDMA(FDD2) TX: 1850 – 1910 MHz
WCDMA(FDD2) RX: 1930 – 1990 MHz
WCDMA(FDD5) TX : 824 – 849 MHz
WCDMA(FDD5) RX : 869 – 894 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 WAP 2.0
2.1 Product Name
LG-D620 : LTE(FDD1/3/7/8/20)+WCDMA(FDD1/2/5/8)+EGSM/GSM850/DCS/PCS with seamless handover Phase
2+(include AMR)
2.2 Supporting Standard