LG LG-D175F User manual

Internal Use Only
Service Manual
LG-D175F
Date: March, 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cation...............................................................................................5
2. PERFORMANCE...................................................................... 8
2.1 Product Name............................................................................................8
2.2 Supporting Standard..............................................................................8
2.3 Main Parts : GSM Solution.....................................................................8
2.4 HW Features ...............................................................................................9
2.5 SW Features............................................................................................. 14
2.6 HW SPEC. ................................................................................................. 18
3. TROUBLE SHOOTING .......................................................... 29
3.1 WCDMA Rx Part Troubleshooting................................................... 29
3.2 WCDMA Tx Part Trouble...................................................................... 52
3.3 GSM Rx Part Troubleshooting .......................................................... 81
3.4 GSM Tx Part Troubleshooting.........................................................100
3.5 Power TS..................................................................................................114
3.6 Charging .................................................................................................118
3.7 USB TS ......................................................................................................120
3.8 Audio TS ..................................................................................................121
3.9 3 AXIS Sensor on/o TS.....................................................................132
3.10 Proximity Sensor...............................................................................135
3.11 Touch Sensor Trouble Shooting..................................................137
3.12 Vibrator Trouble Shooting.............................................................139
3.13 3M Main Camera TS.........................................................................141
3.14 Main LCD TS ........................................................................................144
3.15 BT/Wi...................................................................................................147
3.16 GPS Part................................................................................................150
3.17 FM TS......................................................................................................153
3.18 D-TV........................................................................................................155
4. DOWNLOAD.......................................................................157
5. BLOCK DIAGRAM..............................................................174
6. CIRCUIT DIAGRAM ............................................................183
7. BGA PIN MAP.....................................................................198
8. PCB LAYOUT.......................................................................206
9. CALIBRATION.....................................................................208
10. HIDDEN MENU.................................................................227
11. DISASSEMBLE GUIDE .................................................233
12. EXPLODED VIEW & REPLACEMENT PART LIST .............240
12.1 EXPLODED VIEW................................................................................240
12.2 Replacement Parts ...........................................................................241
12.3 Accessory .............................................................................................268

- 3 - Copyright © 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
1. INTRODUCTION
1. Introduction
1. Introduction
This manual provides the information necessary to repair, calibration, description and download the features
of this model.
1.1 Purpose
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
i f th b b t ill t th i d f i
A.
Security
i
mmune
f
rom
th
e a
b
ove case
b
u
t
w
ill
preven
t
unau
th
or
i
ze
d
use o
f
common carr
i
er
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 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.
E N ti f R di t d E i i
- 4 -
E
.
N
o
ti
ce o
f
R
a
di
a
t
e
d
E
m
i
ss
i
on
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.
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
F. Pictures
The pictures in this manual are for illustrative purposes only; your actual hardware may look slightly
different.
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
ATTENTION
Boards, which contain Electrostatic Sensitive Device (ESD), are indicated by the sign. Following
information is ESD handling:
• Service
p
ersonnel should
g
round themselves b
y
usin
g
a wrist stra
p
when exchan
g
e s
y
stem boards.
p g y g p g y
• 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
described
.
- 5 -

- 5 - Copyright © 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
1. INTRODUCTION
1. Introduction
1.3 Specification
KEY FEATURES
• Android 4.4-(KitKat)
• 3.5” Touch Screen HVGA (480 x 320)
• 3MP FF
• 3G Mobile Hotspot
ENHANCED USER EXPERIENCE
• Android 4.4
• Proximity Sensor – locks the touch screen and buttons while talking on the phone
• Motion Sensor – Accelerometer
•
USB Charging via Computer
USB
Charging
via
Computer
• Airplane Mode (RF Off)
DESIGN
• Sleek and Stylish Design
• 3.5“ HVGA LCD Screen
• Capacitive Touch Screen – Plastic with fast and accurate response
• Micro USB/Charging Port
- 6 -
1.3 Specication

- 6 - Copyright © 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
1. INTRODUCTION
1. Introduction
• 3MP FF
CAMERA/VIDEO
• Camera Resolutions: 2048 x 1536, 1280 x 960 Pixels
• Image Editor: zoom, rotate, crop images
• Brightness, ISO, White Balance,* Color Effects, Timer
• Cheese shutter – take photo with voice command.
• Video Resolutions: 640 x 480 320 x 240 176 x 144 Pixels
MULTIMEDIA
• Music Player for MP3, WMA, and Unprotected AAC
• Stereo Sound via Headset or Bluetooth
• Music Library – Organized by Artists, Albums, Songs, and Playlists
• Repeat and Shuffle Music Playback Modes
BLUETOOTH®
• Version: 4.0
• Supported Profiles: headset, hands-free, object push, advanced audio distribution (stereo), audio/video
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
*De
p
ends on available memor
y
.
p y
**Accessories sold separately.
- 7 -

- 7 - Copyright © 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
1. INTRODUCTION
VOICE/AUDIO
1. Introduction
• One-Touch Speakerphone*
• Speaker-Independent Voice Commands
• Voice-Activated Dialing
• Text to Speech
• MP3 Music Ringer Support
TOOLS & DATA
Android Apps: Alarm/Clock, Browser, Calculator, Calendar (Corporate or Google), Camera, Contacts,
Email, Gallery, Gmail, Google+, Maps, Messaging, Messenger, Music Player, Phone, Places, Play Books,
Play Movies, Play Music, Play Store, Talk, Video Player, Voice Recorder, Youtube
Navigation – spoken turn-by-turn directions showing real-time traffic
Wi-Fi Connectivity – IEEE 802.11 b/g/n
• A-GPS Support for Enhanced Location Accuracy
SPECIFICATIONS
• Technology: GSM/WCMDA
• Frequencies: GSM 850,900,1800,1900
• WCDMA 2100, 850
• Data Transmission: WCMDA, GPRS
• Dimensions: 109.4X59X11.9(mm)
• Display: 3.5" , HVGA (480 x 320) pixels
• Standard Battery: 1,700 [mAh]
ACCESSORIES
• Standard Battery
- 8 -
• Travel Adapter and USB Cable*
• Stereo Headset

2. PERFORMANCE
- 8 - Copyright © 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
LGE Internal Use Only
2.1 Product Name
LG-D175f : WCDMA900/2100+EGSM/GSM850/DCS/PCS(HSDPA 14.4Mbps HSUPA 5.76Mbps)
2.2 Supporting Standard
Item Feature Comment
Supporting Standard WCDMA(FDD1,5)/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(FDD5) TX : 824 – 849 MHz
WCDMA(FDD5) RX : 869 – 894 MHz
EGSM TX : 880 – 915 MHz
EGSM 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
2.3 Main Parts : GSM Solution
Item Part Name Comment
AP Chip MSM8210
CP Chip MSM8210
2. PERFORMANCE
2.1 Product Name
LG-D175f : WCDMA900/2100+EGSM/GSM850/DCS/PCS(HSDPA 14.4Mbps HSUPA 5.76Mbps)
2.2 Supporting Standard
2.3 Main Parts : GSM Solution
LGE Internal Use Only
2.1 Product Name
LG-D175f : WCDMA900/2100+EGSM/GSM850/DCS/PCS(HSDPA 14.4Mbps HSUPA 5.76Mbps)
2.2 Supporting Standard
Item Feature Comment
Supporting Standard WCDMA(FDD1,5)/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(FDD5) TX : 824 – 849 MHz
WCDMA(FDD5) RX : 869 – 894 MHz
EGSM TX : 880 – 915 MHz
EGSM 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
2.3 Main Parts : GSM Solution
Item Part Name Comment
AP Chip MSM8210
CP Chip MSM8210

2. PERFORMANCE
- 9 - Copyright © 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
LGE Internal Use Only
2.4 HW Features
List Type / Spec.
1. Phone Type DOP Type
2. Size 109.4X59X11.9 (mm)
3. Weight TBD
4. Battery 1,700mAh ( typ.), 1,650mAh(min) (Li-Ion)
5.Chipset MSM8210
6. Memory 4GB(eMMC) +4Gb(LPDDR2)
7. LCD Size 3.5 inch
Dot 480(H) X 320(V)
Color 262K/16.7M dithering
Display Type A-si TFT, Transmissive Type
NTSC 65%
Contrast Ratio 1:500
Pixel Pitch 0.051*RGB(v)*0.153(H)
Color temperature 5000 ~ 9000(K) ( typ. 6500K)
8. Main Camera (3M) Type CMOS image sensor
Resolution 2048(H) X 1536(V) pixels.
2.4 HW Features

2. PERFORMANCE
- 10 - Copyright © 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
LGE Internal Use Only
Frame Rate 15 fps@ QXGA, 30 fps@ XGA
View Angle 65°
Image Scaling Down 3M, 2M,1M,VGA
Pixel x size 1.4um x1.4um
10. Audio 1) MIDI MIDI
2) Mono 19 X 10 X 3T Speaker, Receiver Dual mode
3) Receiver 19 X 10 X 3T Speaker, Receiver Dual mode
11. Bluetooth Effective Distance 10M
Distance 0 m ~ 10 m (depend on environment)
12. WLAN standard IEEE 802.11 b/g/n
Throughput Max 40Mbps (SDIO Driver performance)
depend on environment 0 ~ 50m (depend on environment)
13. GPS type A-GPS