LG-P710 Service Manual ENG

Internal Use Only

Service ManualLG-P710

Date: March, 2013 / Issue 1.0

- 2 - Copyright 2013 LG Electronics. Inc. All right reserved.Only for training and service purposes

LGE Internal Use Only

Table Of Contents

1. INTRODUCTION ..................................................................... 31.1 Purpose ........................................................................................................3

1.2 Regulatory Information .........................................................................3

2. PERFORMANCE ...................................................................... 52.1 Product Name ............................................................................................5

2.2 Supporting Standard ..............................................................................5

2.3 Main Parts : GSM Solution .....................................................................5

2.4 HW Features ...............................................................................................6

2.5 SW Features ............................................................................................. 10

2.6 HW SPEC. ................................................................................................. 22

3. CIC AND SERVICE CENTER .................................................. 293.1 CIC FAQ ...................................................................................................... 29

4. TROUBLE SHOOTING .......................................................... 494.1 RF Component ....................................................................................... 49

4.2 SIGNAL PATH ........................................................................................... 51

4.3 Checking TCXO Block ........................................................................... 53

4.4 Checking GSM TX Module(GSM PAM + FEM) Block ................ 55

4.5 Checking WCDMA Block .................................................................... 57

4.6 Checking GSM Block ............................................................................ 68

4.7 GPS/WIFI/BT RF Component ............................................................ 75

4.8 GPS/WIFI/BT SIGNAL PATH ................................................................ 77

4.9 GPS/WIFI/BT Trouble shooting ........................................................ 79

4.10 NFC Component ................................................................................. 85

4.11 Power on Trouble shooting ............................................................ 89

4.12 Charger Troubleshooting ................................................................ 92

4.13 USB Trouble shooting ....................................................................... 95

4.14 Audio Trouble ....................................................................................... 98

4.15 SIM Detect Trouble ...........................................................................116

4.16 Camera trouble ..................................................................................118

4.17 Main LCD trouble ..............................................................................124

4.18 Touch Key Trouble ............................................................................127

4.19 Touch sensor Trouble ......................................................................129

4.20 Side Key Trouble Shooting ............................................................131

4.21 DC Motor Trouble Shooting .........................................................133

4.22 Motion Sensor on/off Trouble Shooting .................................135

4.23 Compass Sensor on/off Trouble Shooting .............................137

4.24 Proximity Sensor on/off Trouble Shooting .............................139

5. DOWNLOAD ....................................................................... 141

6. BLOCK DIAGRAM ............................................................... 161

7. CIRCUIT DIAGRAM ............................................................ 168

8. BGA PIN MAP .................................................................... 178

9. PCB LAYOUT ....................................................................... 184

10. CALIBRATION ................................................................... 190

11. HIDDEN MENU ................................................................. 210

12. DISASSEMBLE GUIDE ...................................................... 217

13. EXPLODED VIEW & REPLACEMENT PART LIST ............. 22413.1 EXPLODED VIEW ................................................................................224

13.2 Replacement Parts ...........................................................................225

13.3 Accessory .............................................................................................261



1. INTRODUCTION

3

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 by an unauthorized part (for example, persons other than your companys employees, agents, subcontractors, or person working on your companys 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 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 Limitations 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. 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.

1. INTRODUCTION



1. INTRODUCTION

4

F. Pictures The pictures in this manual are for illustrative purposes only; your actual hardware may look slightly different.

G. Interference and Attenuation A phone may interfere with sensitive laboratory equipment, medical equipment, etc. Interference from unsuppressed engines or electric motors may cause problems.

H. Electrostatic Sensitive Devices

ATTENTION

Boards, which contain Electrostatic Sensitive Device (ESD), are indicated by the sign.

Following information is ESD handling:

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. PERFORMANCE



2. PERFORMANCE

LG-P716 Product SPEC

1

2.1 Product Name

LG-P710 : WCDMA900/1900/2100+EGSM/GSM850/DCS/PCS

(HSDPA 7.2Mbps / GPRS Class 12 / EDGE Class 12)

2.2 Supporting Standard Item Feature Comment

Supporting Standard WCDMA(FDD1,2,8)/EGSM/GSM850/DCS1800/PCS1900

with seamless handover

Phase 2+(include AMR)

Frequency Range WCDMA(FDD1) TX : 1920 1980 MHz

WCDMA(FDD1) RX : 2110 2170 MHz

WCDMA(FDD2) TX : 1850 1910 MHz


WCDMA(FDD8) TX : 880 915 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

2.3 Main Parts : GSM Solution Item Part Name Comment

Digital Baseband MSM8225A : Qualcomm

Analog Baseband PM8029 : Qualcomm

RF Chip RTR6285A : Qualcomm

2.1 Product Name

LG-P710 : WCDMA900/1900/2100+EGSM/GSM850/DCS/PCS

(HSDPA 7.2Mbps / GPRS Class 12 / EDGE Class 12)

2.2 Supporting Standard

2.3 Main Parts : GSM Solution

2. PERFORMANCE




2

2.4 HW Features Item Feature Comment

Form Factor BAR type

Battery 1) Capacity

Standard : Li-ion, 2460mAh

2) Packing Type : Soft Pack

Size Standard :

121.5 x 66.6 x 9.7 mm

Weight 118g With Battery

RX sensitivity

WCDMA(FDD1) : -111 dBm WCDMA(FDD2) : -111 dBm WCDMA(FDD8) : -111 dBm

EGSM : -108 dBm GSM850 : -108 dBm DCS 1800 : -108 dBm PCS 1900 : -108 dBm

TX output power WCDMA/

GSM/ GPRS

WCDMA : 24dBm/3.84MHz,+1/-

3dBm EGSM : 33dBm

GSM850 : 33 dBm DCS1800 : 30 dBm PCS 1900: 30 dBm

EDGE compatibility GPRS Class 12

SIM card

type

EDGE Class 12

RX EDGE

Class3(WCDMA) Class4 (EGSM)

Class4 (GSM850) Class1 (PCS) Class1 (DCS)

Plug-In SIM 3V /1.8V

Dual SIM E2 (GSM900)

E2 (PCS) E2 (DCS)

Display WVGA Main LCD(4.3, 800 x 480)

Built-in Camera 8M CMOS Camera

Status Indicator Yes

Keypad Touch Screen Front Key : 4

Side Key : 3

Side Key : Power On Volume up/down

ANT Main : Internal Fixed Type

System connector 5 Pin u-USB

2.4 HW Features

2. PERFORMANCE




3

Ear Phone Jack 3.5 pi type

PC synchronization Yes

Memory 4GB eMMC

4Gb LPDDR1

Speech coding FR, EFR, HR,AMR Vibrator Built in Vibrator

Blue Tooth Bluetooth 3.0+EDR MIDI(for Buzzer

Function) SW Decoded 72Poly

Music Player MP3/WMA/AAC/MIDI/EAAC+/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)

Yes ( Up to 32GB )

1) RSSI Display

BAR WCDMA GSM/DCS/PCS

5 Over -85 3dBm Over -90 3dBm

54 -86 3dBm -91 3dBm

43 -92 3dBm -97 3dBm

32 -98 3dBm -99 3dBm

21 -102 3dBm -103 3dBm

10 -108 3dBm -105 3dBm

Measure RSSI after 10 seconds if you change power.


3

Ear Phone Jack 3.5 pi type

PC synchronization Yes

Memory 4GB eMMC

4Gb LPDDR1

Speech coding FR, EFR, HR,AMR Vibrator Built in Vibrator

Blue Tooth Bluetooth 3.0+EDR MIDI(for Buzzer

Function) SW Decoded 72Poly

Music Player MP3/WMA/AAC/MIDI/EAAC+/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)

Yes ( Up to 32GB )

1) RSSI Display

BAR WCDMA GSM/DCS/PCS

5 Over -85 3dBm Over -90 3dBm

54 -86 3dBm -91 3dBm

43 -92 3dBm -97 3dBm

32 -98 3dBm -99 3dBm

21 -102 3dBm -103 3dBm

10 -108 3dBm -105 3dBm

Measure RSSI after 10 seconds if you change power.

1) RSSI Display

2. PERFORMANCE




4

2) Charging Time MAX. 3Hr 30min

3) Travel Charger Input : 90 ~ 264 V, 50/60 Hz

Output : 5.0V, 850 mA

4) Battery Type Li-ion Battery Pack, 2460 mAh

Standard Voltage : 3.8 V, Battery Full Charge Voltage : 4.25V ~ 4.35V

5) Current Consumption

Stand by Voice Call VT

Bluetooth Off Bluetooth Connected

WCDMA Only

5.0 mA under (DRX=128)

5.5 mA under (DRX=128)

350 mA under (Tx=10dBm)

NA

GSM Only

5.0 mA under (Paging=5 period)

5.5 mA under (Paging=5 period)

350 mA under (Tx=Max)

Stand by Voice Call VT

WCDMA 500 hours over

(DRX = 128)

500 min over (TX = 10dBm,

Low Pwr mode) NA

GSM 500 hours over

(Paging Period = 9) 500 min over

(TX Level = Max)

2) Charging Time

MAX. 3Hr 30min

3) Travel Charger

Input : 90 ~ 264 V, 50/60 Hz

Output : 5.0V, 850 mA

4) Battery Type

Li-ion Battery Pack, 2460 mAh

Standard Voltage : 3.8 V, Battery Full Charge Voltage : 4.25V ~ 4.35V

5) Current Consumption

2. PERFORMANCE




5

6) Battery Bar

Battery Bar Specification

BAR 20 (Full) 98%

BAR 20 --> 19 98% 97%

BAR 19 --> 18 93% 92%

BAR 18 --> 17 88% 87%

BAR 17 --> 16 83% 82%

BAR 16 --> 15 78% 77%

BAR 15 --> 14 73% 72%

BAR 14 --> 13 68% 67%

BAR 13 --> 12 63% 62%

BAR 12 --> 11 58% 57%

BAR 11 --> 10 53% 52%

BAR 10 --> 9 48% 47%

BAR 9 --> 8 43% 42%

BAR 8 --> 7 38% 37%

BAR 7 --> 6 33% 32%

BAR 6 --> 5 28% 27%

BAR 5 --> 4 23% 22%

BAR 4 --> 3 16% 15%

BAR 3 --> 2 13% 12%

BAR 2 --> 1 8% 7%

BAR 1 --> 0 3% 2%

POWER OFF 0%

6) Battery Bar

2. PERFORMANCE



10

2.5 SW Features

Function Detail Item O / X Specification Etc.

OS OS O Android 4.1.2

JB

Data Circuit X

Video Telephony using

64kbps CSD

Packet O

Connectivity

Infrared (IrDA) X

Bluetooth O Ver. 3.0 + EDR

Wi-Fi O 802.11 b/g/n

USB O Ver. 2.0 HS

USB Mass storage O SD card only

RS232 X

DLNA1.5 O

Voice Function

Voice Recording O

Voice Command

X Digit Dial

X Name Dial

X Menu

X Phonebook Searching

Answering machine X Driving, Meeting, user

define(absent)

Memory User Memory

O Total 4GB eMMC/ 4Gb DDR +

external MicroSD

O Total User Memory 1.7GB (TBD) (w/o MicroSD)

O MMS

O Pictures (Still Image &

Moving Image)

O MP3 (Music Contents)

X Java Contents

O Wallpaper

O Ringtone

O external memory

(microSD)

support SDA2.0

specification, up to 32GB

2.5 SW Features

2. PERFORMANCE



11

Camera

(Still Capture)

Memory O MicroSD

Camera Module O 8M CMOS Camera

Auto Focus O Still Mode AF

Digital Zoom O Camera : X4, Camcorder :

X2

Capture Resolution O

8M(3264X2448),

W6M(3200X1920)

5M(2560x1920),

3M(2048x1536),

W3M(2240x1344),

1M(1280x960),

W1M(1280x768)

Continuous Shot O

Quality X

Preview Image O 640 X 480

TV-Out X

Flash O LED

Filter O None/Mono/Sepia/Negativ

e

Timer O Off / 3 secs / 5 secs/10 secs

JPEG Encoding

O JPEG

O Thumbnail

O

3264X2448, 3200X1920,

2560x1920, 2048x1536,

2240x1344, 1280x960,

1280x768

JPEG Decoding O JPEG

O Min, Max Supported by Gallery

Panorama Shot O

Album&Slide show O Slide show Supported by Gallery

2. PERFORMANCE



12

Camera (Movie

Capture)

Movie Resolution O 720X480,

640x480,320x240,176x144

Filter O Same as the Still Capture Quality X

MPEG Visual Bit Rate O 2000,2000,320,192 Kbps

Audio Encode O AAC, , AMR-NB

Audio Decode O AMR

Movie Recode O Recode, Stop

Movie Playback O Play, Stop, Pause

Stream Format (Mux) O 3gp

Stream Format (Demux)

O 3gp

Recoding Time O Real Time Recoding

TV-Out X Audio Voice Codec O AMR

Multimedia

AAC /AAC+/ EAAC+ O

MP3, WAV O

WMA O

Midi O Midi Type0, Midi Type1, SP-

MIDI

Music ringtone O MP3, AAC, AAC+, AAC-LC, XMF

1.01, AMR

AMR-NB O

Music player skin O Music Player

FM Radio O With RDS Japan band is not supported Speakerphone O

Multimedia

MPEG4/H.263 O

H.264 O WMV O

Normal View X Moving Image Capture & Movie

Contents contents size

Wide View O Full Screen mode

Custom DTV Zoom X

Other Features

File Viewer O doc, xls, ppt, gif, jpg Macromedia Flash

Lite X Not Available

2. PERFORMANCE



13

e-Book/e-Comic

Book X *.doc, *.jpg, *.gif

E-book reader program is

not included in ROM. But

user can download in

internet. WM product

recommend using Microsoft

Reader for PPC.

Flight Mode O

Internet Browser

WAP

(Windows Mobile 6.0

IE Mobile )

X version 2.0

X WML1.3

O XHTML1.1

O HTML4.01 Partially support - HTML 5

Java

MIDP X

J2ME support X

Game & Contents X

CLDC X

Flash Flash Game X

Streaming Service

H.263+AAC/AMR-NB O

MPEG4+AAC/AMR-

NB O

WMV9 X Support WMV main and base

profile except advanced profile

DRM OMA DRM

O Forward Lock

X Separate Delivery

X Combined Delivery - Count-only

OTA OTA O OTA 1.0

Display

RSSI O 4 level

Battery Level O 5 level Yes

RTC O

Multi Language O depending on build language.

PLMN/Service

Indicator O

Dimming Clock O Battery power

15s, 30s, 1min, 2min, 10min,

2. PERFORMANCE



14

30min

External power

15s, 30s, 1min, 2min, 10min,

30min

Dual Clock O widget

Last Dialed Number O

Normal Features

Last Received

Number O

Last Missed Number O

Scratch Pad Memory X

2. PERFORMANCE



15

Call Management Call Waiting O

Management Call Swap O

Call Retrieve O

Auto Answer X

Automatic Redial X

Calling Line Identification O

Full Call divert X

Speed Dialing O

Last Number Redial X

Multiparty Call (Conference

Call) O

Explicit Call Transfer O

Network

Automatic Network

Selection O

Manual Network Selection O

Network Service Status O

DTMF DTMF Signaling O

DTMF Enable & Disable X

Audio

Key Tone Volume O 8 Level (Include Mute)

Ring Tone Volume O 8 Level (Include Mute)

Ring Tone Pattern O

Ring Type Silent O Vibrator & Ring (Indicator)

Earpiece Volume O 8 Level (Include Mute)

Mute O

Cell Broadcast

Read Cell Broadcast O

Cell Broadcast Categories X

Cell Broadcast Message

Language O

Supports filtering with

language IDs (German,Italian,French,Spanish,

Dutch,Swedish,Danish,Portuguese,Finnish,Norwegg

ian

,Greek,Turkish,Hungarian,Polish,Czech)

Management

2. PERFORMANCE



16

Phone Book

Entry O Phone,Email,Grops,Postal

address,Organization,IM,Notes,

Nickname,Website,Event

Field O

Phone(Mobile,Home,Work,Work

Fax,Home Fax,Pager, Other, Custom)

Email(Home,Work,Other,Custom)

Groups(Business,Colleagues,Family,

Friends,School,Custom)

Postal

address(Home,Work,Other,Custom)

Organization(Work,Other,Custom)

IM(AIM,Windows

Live,Yahoo,Skype,QQ,Google

Talk,ICQ,Jabber,Custom)

Event(Birthday,Anniversary,Event)

Numeric Store and Recall O

Alphabetic Store O

Alphabetic Recall X

Scroll by alphabetic or

numeric order O

Last Number Dialed O

Last Number Missed O

Last Number Received O

Copy & Move X Move not support

Fixed Dial Number O

Barred Dial Number X

Service Dial Number X

Email Entry O

Picture ID O Relating Photo caller ID

My Name card O Bluetooth transmission (OPP)

Call Cost

Last Call Timer X

Last Call Charge Units X

Total Call Timer X

Total Charge Units X

Visible, Audible Call Time/Cost

Indication X

2. PERFORMANCE



17

Supp. Services

Call Forwarding

O All Incoming Calls,

O No Reply

O On Busy,

O Not reachable

Call Barring

O All Outgoing Calls,

O International Calls,

O Calls except to Home Country

incoming Calls,

O All incoming Calls when roaming

Conference Call O up to 5 calls

SIM

Plug In Type O

SIM Lock O

SIM Toolkit O

Prepaid SIM Operation O

2. PERFORMANCE



18

Short

Messaging

Read Message O EMS Not Support

Write and Edit Message O

Send and Receive Message O

Reply to Message O

Forward Message O

Extract Number from

Message O

Message Status O

Message Unread Indicator O

Settable Message Center

Number, O

Reply Path and Validity

Visible and Audible

Message Receive Alerting O

Voice Mail O

Settable Voice Mail Center

Number O

Message Protocol O

Message Overflow

Indicator O

Message Center Number O

Help Menu X

Multimedia

Messaging

Picture Attachable O Max 300kbyte

Moving Picture Attachable O Video MMS Max 300kbyte

Voice Attachable O AMR

Help Menu X

Others O

2. PERFORMANCE



19

Instant Messaging

Service

IM O Gtalk

PC Compatable O

Menu Option O

E-Mail Protocol

O IMAP4

O SMTP

O POP3

X Help Menu

Voice Instant

Messaging Service

PTT X Full Duplex

X Half Duplex

Menu Option

X Grouping

X Status List

X Help

X Others

Sound Contents

Wallpaper X

Screen Saver X

Ringtones O

Karaoke X

Stutter Sound O

Flip tone X

Button tone O can be enable or disable button

press sound.

Others X

2. PERFORMANCE



20

Calendar New Event O

Edit Event O

Agenda O

Reminder O

Google sync O

Miscellaneous

Function

Development & Test

Facility

X

Field Test Facility X

Display Software

Version

O

IMEI O *#06#

Text Input Language O

Predictive word input O T9 predictive supported.

Scheduler Schedule NA

To Do List NA

Memo NA

D-day counter NA

Send via Bluetooth NA

World Time Setting Local Time O

Display Two Number

of Cities Time

X

Daylight saving O

Unit converter X

Stop watch X Included in Alarm/Clock

Calculator Calculation O

PC Sync Phone Book Sync O

Message Sync x PC suite support message viewing

and sending.(not sync)

Multimedia Contents

Sync

x PC suite support file transfer

between phone and PC.(not sync)

Scheduler Sync O

Sync ML DS X

DM O

2. PERFORMANCE



21

Game X TBD

External Interface

Electrical Man Machine Interface

X

Handset

Development and Test Facility X

Restore Factory Setting O

Security

Read Software Version O

Battery Charging Mode O USB/ TA Charging USB/ TA Charging Emergency Call O

Real Time Clock

Handset Lock O Security Code O

SIM Lock O Key guard X 12/24 hour O

Calendar O Time Zone O

Alarm Manager O

Dimming Clock O

Battery power 15s, 30s, 1min, 2min, 10min,

30min External power

15s, 30s, 1min, 2min, 10min, 30min

Power-off Alarm X

On Alarm Event O Display

2. PERFORMANCE



22

2.6 HW SPEC.

1) GSM transceiver specification Item Specification

Phase Error Rms : 5

Peak : 20

Frequency Error GSM : 0.1 ppm

DCS/PCS : 0.1 ppm

EMC(Radiated Spurious Emission

Disturbance) GSM/DCS : < -28dBm

Transmitter Output power and Burst

Timing

GSM : 5dBm 33dBm 3dB

DCS/PCS : 0dBm 30dBm 3dB

Burst Timing

2. PERFORMANCE



2) WCDMA transmitter specification

23

2) WCDMA transmitter specification Item Specification

Transmit Frequency

Band1 : 1920 MHz ~ 1980 MHz

Band2 : 1850 MHz ~ 1880 MHz

Band5 : 824MHz~849MHz

Maximum Output Power +24 dBm / 3.84 MHz, +1 / -3 dB

Frequency Error within 0.1 PPM

Open Loop Power Control Normal Conditions : within 9 dB,

Extreme Conditions : within 12 dB

Minimum Transmit Power < -50 dBm /3.84 MHz

Occupied Bandwidth < 5 MHz at 3.84 Mcps (99% of power)

Adjacent Channel Leakage

Power Ratio (ACLR)

> 33 dB @ 5 MHz,

> 43 dB @ 10 MHz

Spurious Emissions

|f-fc| > 12.5 MHz

< -36 dBm / 1 kHz RW @ 9 kHz f < 150 kHz

< -36 dBm / 10 kHz RW @ 150 KHz f < 30 MHz

< -36 dBm / 100 kHz RW @ 30 MHz f < 1 GHz

< -30 dBm / 1 MHz RW @ 1 GHz f < 12.75 GHz

< -60 dBm / 3.84 MHz RW @ 869 MHz f 894 MHz



< -67 dBm / 100 kHz RW @ 925 MHz f 935 MHz

< -79 dBm / 100 kHz RW @ 935 MHz < f 960 GHz

< -71 dBm / 100 kHz RW @ 1805 MHz f 1880 MHz

< -41 dBm / 300 kHz RW @ 1884.5 MHz < f < 1919.6 MHz

Transmit Intermodulation < -31 dBc @ 5 MHz & < -41 dBc @ 10 MHz

when Interference CW Signal Level = -40 dBc

Error Vector Magnitude < 17.5 %, when Pout -20 dBm

Peak Code Domain Error < -15 dB at Pout -20 dBm

Band1 : 1920MHz 1980MHz



2. PERFORMANCE



3) WCDMA receiver specification

24

3) WCDMA receiver specification Item Specification

Receive Frequency

Band1 : 2110 ~ 2170 MHz

Band2 : 1930 MHz ~ 1990 MHz

Band5 : 869~894MHz

Reference Sensitivity Level Band1 : BER < 0.001 when or = -106.7 dBm / 3.84 MHz

Band4 : BER < 0.001 when or = -106.7 dBm / 3.84 MHz

Maximum Input Level BER < 0.001 when or = -25 dBm / 3.84 MHz

Adjacent Channel Selectivity

(ACS)

ACS > 33 dB where BER < 0.001 when

or = -92.7 dBm / 3.84 MHz

& Ioac = 52 dBm / 3.84 MHz @ 5 MHz

Blocking Characteristic

BER < 0.001 when or = -103.7 dBm / 3.84 MHz

& Iblocking = -56 dBm / 3.84 MHz @ Fuw(offset) = 10 MHz

or Iblocking = -44 dBm / 3.84 MHz @ Fuw(offset) = 15 MHz

Spurious Response BER < 0.001 when or = -103.7 dBm / 3.84 MHz

& Iblocking = -44 dBm

Intermodulation

BER < 0.001 when or= -103.7 dBm / 3.84 MHz

& Iouw1 = -46 dBm @ Fuw1(offset) = 10 MHz

& Iouw2 = -46 dBm / 3.84 MHz @ Fuw2(offset) = 20 MHz

Spurious Emissions < -57 dBm / 100 kHz BW @ 9 kHz f < 1 GHz

< -47 dBm / 1 MHz BW @ 1 GHz f 12.75 GHz

Inner Loop Power Control

In Uplink

Adjust output(TPC command)

cmd 1dB 2dB 3dB

+1 +0.5/1.5 +1/3 +1.5/4

0 -0.5/+0.5 -0.5/+0.5 -0.5/+0.5

-1 -0.5/-1.5 -1/-3 -1.5/-4

group(10equal command group)

+1 +8/+12 +16/+24




2. PERFORMANCE



4) HSDPA transmitter specification

25

4) HSDPA transmitter specification Item Specification

Transmit Frequency Band1 : 1920 MHz ~ 1980 MHz

Band2 : 1850 MHz ~ 1880 MHz

Band5 : 824MHz~849 MHz

Maximum Output Power Sub-Test

1=1/15, 2=12/15 21~25dBm / 3.84 MHz

3=13/15 4=15/8 20~25dBm / 3.84 MHz

5=15/7 6=15/0 19~25dBm / 3.84 MHz

HS-DPCCH

Sub-test

in table

C.10.1.4

Power

step

Power step slot

boundary

Power

step size,

P [dB]

Transmitter power

step tolerance [dB]

5

1 Start of

Ack/Nack 6 +/- 2.3

2 Start of CQI 1 +/- 0.6

3 Middle of CQI 0 +/- 0.6

4 End of CQI 5 +/- 2.3

Spectrum Emission Mask

Sub-Test : 1=1/15, 2=12/15, 3=13/15, 4=15/8, 5=15/7, 6=15/0

Frequency offset

from carrier f Minimum requirement

Measurement

Bandwidth

2.5 ~ 3.5 MHz -35-15(f-2.5)dBc 30 kHz

3.5 ~ 7.5 MHz -35-1(f-3.5)dBc 1 MHz

7.5 ~ 8.5 MHz -35-10(f-7.5)dBc 1 MHz

8.5 ~ 12.5 MHz -49dBc 1 MHz

Adjacent Channel Leakage

Power Ratio (ACLR)

Sub-Test : 1=1/15, 2=12/15, 3=13/15, 4=15/8, 5=15/7, 6=15/0

> 33 dB @ 5 MHz

> 43 dB @ 10 MHz

Error Vector Magnitude < 17.5 %, when Pout -20 dBm




2. PERFORMANCE



5) HSDPA receiver specification

26

5) HSDPA receiver specification

Item Specification

Receive Frequency

Band1 : 2110 ~ 2170 MHz

Band2 : 1930 MHz ~ 1990 MHz

Band5 : 869~894MHz

Maximum Input Level

(BLER or R), 16QAM Only

Sub-Test : 1=1/15, 2=12/15, 3=13/15, 4=15/8, 5=15/7, 6=15/0

BLER < 10% or R >= 700kbps

6) WLAN 802.11b transceiver specification Item Specification

Transmit Frequency 2400 MHz ~ 2483.5 MHz ( CH1~CH13 )

Tx Power Level 20dBm under

Frequency Tolerance within 25 PPM

Chip clock Frequency

Tolerance

within 25 PPM

Spectrum Mask -30 @ fc-22MHz< f

2. PERFORMANCE



27

7) WLAN 802.11g transceiver specification Item Specification


Tx Power Level 20dBm



Tolerance within 25 PPM

Spectrum Mask

-22 @ 11MHz offset (9Mhz ~ 11MHz)

-30 @ 20MHz offset (11MHz ~ 20Mhz)


Transmitter constellation error

(rms EVM) -5dB

Spurious Emissions

< -36 dBm @ 30MHz ~ 1GHz

< -30 dBm above @ 1GHz ~ 12.75GHz

< -47 dBm @ 1.8GHz ~ 1.9GHz

< -47 dBm @ 5.15GHz ~ 5.3GHz

Rx Min input Sensitivity PER 10%

-71dBm

Rx Max input Sensitivity -20dBm(6,9,12,18,24,36,48,54Mbps) @ PER 10%

Rx Adjacent Channel

Rejection

PER 10%,

-1dB

7) WLAN 802.11g transceiver specification

2. PERFORMANCE



8) WLAN 802.11n transceiver specification

28

8) WLAN 802.11n transceiver specification Item Specification





Tolerance

within 25 PPM

Spectrum Mask -22 @ 11MHz offset (9Mhz ~ 11MHz)




(rms EVM)

-5dB

Spurious Emissions < -36 dBm @ 30MHz ~ 1GHz


< -47 dBm @ 1.8GHz ~ 1.9GHz

< -47 dBm @ 5.15GHz ~ 5.3GHz


-61dBm


Rx Adjacent Channel

Rejection

PER 10%,

-1dB

9) GPS receiver specificationItem Specification

Receive Frequency 1574.42 MHz ~ 1576.42 MHz

Minimum Sensitivity 1 satellite -142dBm, 7 satellites -147dBm at coarse time aiding

9) GPS receiver specification

28

8) WLAN 802.11n transceiver specification Item Specification





Tolerance

within 25 PPM

Spectrum Mask -22 @ 11MHz offset (9Mhz ~ 11MHz)




(rms EVM)

-5dB

Spurious Emissions < -36 dBm @ 30MHz ~ 1GHz


< -47 dBm @ 1.8GHz ~ 1.9GHz

< -47 dBm @ 5.15GHz ~ 5.3GHz


-61dBm


Rx Adjacent Channel

Rejection

PER 10%,

-1dB

9) GPS receiver specificationItem Specification

Receive Frequency 1574.42 MHz ~ 1576.42 MHz

Minimum Sensitivity 1 satellite -142dBm, 7 satellites -147dBm at coarse time aiding

3. CIC AND SERVICE CENTER




3.1 CIC FAQ

No FAQ Q&A

1 Q I cant remember the PhoneLock password.

A

Do the following when you forget your Pattern, Pin and Password.1. With a Google account

1) Forgot Pattern > Enter your Google acctount> Reset 2. With no Google account

- Power off > Keep pressing Power + Volume Down+ Home Key (Factory Hardware Reset)

3. When you have a Backup Pin, enter the BackUp pin.

Refer to the User Manual for details.

Request for development

1. How to disable Pattern Lock, Password and PIN. 2. Request to check out if it is specified in the user manual.3. Description on HW Factory Reset Key combination and how to do it.




No FAQ Q&A

2 Q How do I put in and take out files from the SD card?

A1) Connect the phone with PC via USB.2) Select MTP in the USB Connection Mode pop-up window.3) Copy/Save/Delete the file via the Windows Explorer on PC.


1. PC SD CARD2. PHONE SD CARD

3 Q I use it abroad, but 3G connection doesnt work.

A

The phone switches to the roaming mode abroad. For 3G connection in the roaming mode, change the option as follows.Option Key -> System settings -> More -> Mobile networks -> Check Data roaming option


ex) 1. EuropeEurope 2. EuropeContinents(North America, Asia etc)




No FAQ Q&A

4 Q The GPS location isnt right, what should I do?

A

1. Prior to running an application, check the Location Service Setting. Menu -> Setting -> Location services : Googles location service Enable => Searches a nearby base station and shows

approximate distance from the user to the station (location error: 500m ~ 2000m). : GPS Satellites Enable => Searches GPS around the user and the accurate location

(location error: less than 50m).

2. GPS signals are not visible indoors even when GPS Satellites are Enabled. As a result, the location found may be an approximate, not accurate, distance.

( Location Setting -> Use 3G/4G Wi-Fi Location / only when Location-based Google search is Enabled / To find a location via GPS, stay near windows or in the open air.)

3. Maps application / Navigation application require 3G/4G Data to be Enabled in order to get map data so that the user can see accurate location.)

5 Q The downloaded application isnt compatible?

ASome apps are incompatible with certain Android OS versions.- Inquire developers about incompatibility.




No FAQ Q&A

6 Q How do I make an e-mail account?

A

1) Run the Email app

2) Select Exchange - MS Exchange or IMAP/POP3 - Others

3) Enter email address and PW ( Enter UserID if it does not match the address. )




No FAQ Q&A

7 Q E-mail registration doesnt work.

A

1) Check out if server information is correct.

- Yahoo / Hotmail server addresses may vary from country to country. If server information has changed and become different from Email management DB, account registration may not be successful.

Enter email address / pw and press Manual button to enter the server address manually. ( Refer to the web site of the email service for server address. )

2) Some accounts e.g. Hotmail apply locks to prevent account thefts.

- In that case, access the email account on the web, and it is unlocked along with a notice.

3) See if the email account has POP/IMAP Enabled.

- Access the email account on the web, go to the setting menu and Enable/Disable IMAP/POP features.




No FAQ Q&A

8 Q Unused application shows up as a using program even though it is all killed. What should I do?

A

Some apps remain active even when they are killed depending on the phone status (network connection, internal process etc).

Do the following in this case to Force Stop such apps.

Menu > System settings > App >Select the app > Force Stop




No FAQ Q&A

9 Q Wifi connection doesnt work well.

A

1) See if Wi-Fi is turned on (if it is OFF, turn in On.)

2) See if any Wi-Fi network is available.

3) Check out the signal strength of the available Wi-Fi (Wi-Fi connection fails in case its signal is weak or any security locks applied. )




No FAQ Q&A

10 Q How do you install the PC Sync Program?

A

1. Go to the home page and download it.

1) Select the country at www.lgworld.com.

2) Click [Manual & Software Download].

3) Search your smartphone model.

4) Click [PC Sync] among download items and [WINDOW PCSync Download] button and download the PC SW.

2. Download it using AutoRun

1) Connect the phone with PC, and select [PC Software] in the USB Connection Mode pop-up window.

2) Shortly, click [Download] button in the Autorun pop-up on PC.

Guide for installation of LG Companion

In order to install LG companion, you need to download.

Please press the button below.

Download confirm




No FAQ Q&A

11 Q How do you install the Phone driver?

A

1. Download it on the home page.

1) Select the country at www.lgworld.com.

2) Click [Manual & Software Download].

2. Download it using AutoRun

1) Connect the phone with PC, and select [PC Software] in the USB Connection Mode (auto-run) pop-up window.

2) On Windows 7, select LGAutoRun.exe. Windows XP runs auto installation.




No FAQ Q&A

12 Q How to connect internet/data network

A

Tick the following option to connect to data network.

Option Key -> System settings -> Dual SIM -> Check Data Enabled option.




No FAQ Q&A

13 Q What should I do to connect PC Sync program with the phone?

A

1. USB connection

1) Run PC Suite

2) Connect PC with phone via USB, and in the [Connection Mode] pop-up, select LG software.

3) Automatic connection follows.

2. Wi-Fi connection

1) Connect PC and Phone to an AP(to a Wi-Fi or hot-spot)

2) Menu on your phone>Setting>Connection> Tick PC Suite

3) Press the button below under PC Suite, or Device->Device connection->USB cable connection->Wi-Fi connection

4) Click Next

5) Search and select the model and press Connect.

6) Accept connection on the phone




No FAQ Q&A

14 Q Can language be changed?

A

Do the language setting as follows.

Menu > system settings > Language & input > Language

15 Q How do you Reset and Factory Reset?

A

Do the Factory Reset as follows.

Menu > system settings > Backup & reset > Factory data reset > Erase everything




No FAQ Q&A

16 Q I want to change the bell sound.

A

Change the Bell Sound as follows.

Menu > System settings > Sound > Phone ringtone >Select one from the list > OK




No FAQ Q&A

17 Q Is it compatible with other devices?

A

It is compatible with Bluetooth devices.

Connection is available with bluetooth devices, e.g. headsets, PCs, phones.

Then you can play music and send/receive files.

Ex.) Connect Bluetooth headsets

Menu>Setting>Bluetooth on>Search devices>Select a device>Pairing>Connection

Request for development Bluetooth

18 Q How do you use HDMI?

A N/A

19 Q HDMI error occurs.

A N/A

LG-P710




No FAQ Q&A

20 Q How do you use Smart Share?

A

SmartShare enables DLNA-authorized devices on a network to share photos, videos and music.

1. Press Applications>Select SmartShare.

2. From>Select a library containing the content. (My Phone, another phone, PC etc.)

3. Browse the library and select the content.

4. When Player Setting List appears, select a Player.

21 Q Smart Share error occurs.

A

1. P710 does not appear on other devices.

- Setting> Make sure Discoverable is ticked.

- Make sure P710 is allowed on other devices settings.

2. Devices are connected to the same AP. But no devices appear under From.

- Make sure connected devices support DLNA and DLNA server feature(DMS) is on.

- Device search may not work properly when network condition is not good.

3. Files are not played.

- Files may not be supported by the device.

4. Uploading does not work.

- The DMS to be uploaded may not support uploading.

MUSIC VIDEO PICTURE

PLAY LIST




No FAQ Q&A

22 Q Battery consumption is too fast.

A

How to extend battery life

1) Turn off Wi-Fi, Bluetooth and GPS features when not in use.

2) Lower the screen brightness. Shorten the screen time-out setting.

3) Turn off Gmail, Calender,Contacts and other auto sync features.

23 Q How is the distribution schedule of OS or SW new version known?

A Refer to the home page.




No FAQ Q&A

24 Q How do you update the SW?

A

There are three ways.

1. USB installation

1) Go to www.lg.com

2) Mobile > Select Driver & Downloads

3) Select your phone

4) Install USB driver and LG MOBILE SUPPORT TOOL on your PC

5) Connect the phone to USB and install updates following the program.

2. OTA-based wireless installation

1) Menu >Setting >Phone info >SW updates

3. Visit a service center.




No FAQ Q&A

25 Q Until when is it guaranteed after purchase? What is the warranty limit?

A 1 year

26 Q What kinds of phone accessories are there?

A

1. Travel adaptor

2. Battery

3. Stereo headset

4. Data cable

5. User Guide




No FAQ Q&A

Please ask and answer 3 expected questions regarding the new product and new features.

27 Q What should I do to enter the Safe Mode?

A

1. On Android booting, enter using Vol-Down or Menu button.

(Menu is a Touch key. Vol-Donw is recommended.)

2. Safe Mode is displayed in gray at the left bottom.

3. In Safe Mode, no Download App is present. Only preload apps are displayed.


Model-specific Safe Mode entry procedures need describing together with screen captures.




No FAQ Q&A

28 Q What is the Memory Size provided for and seen to the end user?

A

1. Available Memory: 2.1GB

2. External memory is not an inbox.


1) The phones default avaiable memory capacity is marked in the image attached.

2) Actual size available to customers need be marked.

4. TROUBLE SHOOTING



4. TROUBLE SHOOTING

4.1 RF Component

U1001U1002

U1005

FL1003

FL1002

FL1005

FL1011

FL1012

FL1006

FL1001

FL1004

FL1007

FL1010

U1006

U1004FL1008

U1003

4. TROUBLE SHOOTING



RF component (WCDMA / GSM)

Reference Description Reference Description

U1001 U1001(Transceiver, RTR6285A) FL1004 WCDMA Band8 Tx SAW Filter

U1002 FEM + GSM PAM Module FL1005 WCDMA Band1 Duplexer

U1003 WCDMA Band8 PAM FL1006 WCDMA Band1 Rx SAW Filter

U1004 WCDMA Band1PAM FL1007 WCDMA Band1 Tx SAW Filter

U1005 WCDMA Band2 PAM FL1008 WCDMA Band2 Duplexer

U1006 External LNA FL1010 WCDMA Band2 Tx SAW Filter

FL1001 GSM Low Band Rx SAW Filter FL1011 WCDMA Band8 Rx SAW Filter

FL1002 GSM High Band Rx SAW Filter FL1012 WCDMA Band2 Rx SAW Filter

FL1003 WCDMA Band8 Duplexer

4. TROUBLE SHOOTING



4.2 SIGNAL PATH

WCDMA / GSM Tx PATH

WCDMA Band1 Tx Path

WCDMA Band2 Tx Path

WCDMA Band8 Tx Path

GSM Low Band Tx Path

GSM High Band Tx Path

4. TROUBLE SHOOTING



WCDMA / GSM Rx PATH

WCDMA Band1 Rx Path

WCDMA Band2 Rx Path

WCDMA Band8 Rx Path

GSM Low Band Rx Path

GSM High Band Rx Path

4. TROUBLE SHOOTING



4.3 Checking TCXO Block

The output frequency (19.2MHz) of TCXO (X2001) is used as the reference one of RTR6285 and PM8029 internal VCO.

Schematic of the Crystal Part (19.2MHz)

TP1

TP2

TP3

R2007

100

C2028 1n19.2MHz

1XXA19200FBBX2001

3

2

4

1VCONT

VCC

GND

OUT

VREG_TCXO_2.85V

C2026 330p

1n

C2023

0.1u

C2024

27pC2027

C2025

10n

TCXO_RTR_19.2MHZ

TCXO_NFC_19.2MHz

TCXO_PM_19.2MHZTRK_LO_ADJ

R2007 : Change 1Kohm --> 100ohm(refer to QCT reference schematic)

change 0819

Clesed to TCXO

CHANGE 11.03.02

GPS DFF was removed.CHANGE 1008

TP1

TP2

TP3

4. TROUBLE SHOOTING



Check TP1VCC of TCXO

2.4V Voltage 0.4V

VCC 2.8V

Check MSM8225

Check PM8029

No

No

Yes

Yes

Check TP3

Check TP2

19.2 MHz Signal Check soldering and components

No

Yes

TCXO is OK

4. TROUBLE SHOOTING



4.4 Checking GSM TX Module(GSM PAM + FEM) Block

Schematic of the TX Module

TP1(VBATT)

68

R1003

100

R1004 R1005

100

C1034

DNI

C1035 DNI

C1036 DNI

DNI

C1038

R1002

2.2K

68

R1007

R1009

100 100

R1008

39pC1015

47pC1033

U1002

GND12

VBATT5

GND10

27

GND219

GND9

26

GND320

GND8

25

GND421

ANT18

PGND331

PGND230

PGND129

GND522

GND6

23GND7

24

PGND634

PGND533

PGND432

PGND7

35

PGND8

36

PGND9

37

PGND1038

PGND1139

PGND1240

PGND1341

PGND1442

PGND1543

PGND1644

HB_IN1

GND11

28

LB_IN3

VAPC4

BS26

BS17

TXEN_8

MODE

9

WCDMA317

TEMP

10

RX4

11

RX3

12

RX2

13

RX1

14

WCDMA115

WCDMA216

C103210u

ANT_SEL0

ANT_SEL3ANT_SEL2ANT_SEL1

+VPWR

GSM_HB_TX

GSM_LB_TX

GSM_PA_RAMP

0603

0603

0603

DCS(1710-1785 MHz)PCS(1850-1910 MHz) 10dB Atten

10dB Atten.

2mmFEMGSM900(880-915MHz)GSM850(824-849MHz)

TP1(VBATT)

4. TROUBLE SHOOTING



Check ANT_SEL 0, 1, 2, 3High Level

1.2V < Voltage < 3V Check the TP1(VBATT)No

Yes

Check the Logic each mode1.2V

ANTENNA SWITCH MODULE LOGIC (SKY77544)

ANT_SEL0 ANT_SEL1 ANT_SEL2 ANT_SEL3

GSM850/GSM900 TX LOW HIGH LOW LOW

DCS1800/PCS1900 TX HIGH HIGH LOW LOW

PCS1900 RX LOW LOW LOW (X) HIGH

DCS1800 RX LOW HIGH LOW (X) HIGH

GSM 900 RX HIGH HIGH LOW (X) HIGH

GSM 850 RX HIGH LOW LOW (X) HIGH

W1700 HIGH LOW LOW LOW

W900(W850) LOW LOW HIGH LOW

W2100 HIGH LOW HIGH LOW

Checking Switch Block Power Source

4. TROUBLE SHOOTING



2. Check TX Module Block Refer to 4.4

1. Check TCXO 19.2MHz

3. Check RF Tx Level

4. Check PAM Block Refer to 4.5.4

START

5. Check RF Level

6. Re-download & Cal

4.5 Checking WCDMA Block

4. TROUBLE SHOOTING



4.5.1Checking TCXO Block

Refer to 4.3

4.5.2. Checking FEM Block

Refer to 4.4

4.5.3. Checking RF TX Level

Test Point (TX Level)

TP3

TP2

TP4

TP1

4. TROUBLE SHOOTING



2.2nC1001L1001

2.7n

L1004

0.5p

68

R1003

100

R1004 R1005

100

L1005100n

SW1002

43

2

1ANT COMMON

G3 G4

R1002

2.2K

R1007

SW1001

G1

ANTG2

39pC1015

U1002

GND12

VBATT5

GND10

27

GND219

GND9

26

GND320

GND8

25

GND421

ANT18

PGND1

GND522

GND6

23GND7

24

PGND1341

PGND1442

PGND1543

PGND1644

HB_IN1

GND11

28

LB_IN3

VAPC4

BS2BS1TXEN_

WCDMA3WCDMA2

L1002DNI

L1003DNI

GSM_HB_TX

GSM_PA_RAMP0603


FEM

TP1

5.6nL1025

FL1005

75

84

92

3

16ANT RX

TX

GND1 GND6

GND2 GND5

GND3 GND4

L1027

100p

100p

C1065

1.8n

C1096

C1080

DNI

C1078

100p

C1083

3.9n

100p

L1046

100p

C1095

C1067

DNI

C10771p

C1079

2.2n

L1035

1.8n

100p

C1063

C1130

1.8pC1128

0.5p

6.8n

L1045

C1082

0.5p

C1088

8.2p

C1089

6.8p

12nL1029

L1039

1n

FL1003

75

84

92

3

16ANT RX

TX

GND1 GND6

GND2 GND5

GND3 GND4

L1044

10n

C1068

DNI

L1026

5.6n

L1038

2.7n

L1034

0.5p

L1032

1n

C1102

DNI

1n

C1122

100p

L1028

R1019

DNI

R1020

DNI

DNI

L1030

L1052

DNI DNI

L1049

100p

L1033

1n

C1126

L1041

100p

L1043DNI

L1023

100p

DNIC1074

100p

L1042

C1092DNI

C1123

2.2u 1nC1124

C1125

2.2u

C1066

2.2u

+VPWR

897.5 MHz

FL1004

5 3 2

4 1INOUT

G1G2G3

1950MHz

FL1007

5 3 2

4 1INOUT

G1G2G3

+VPWR

+VPWR

49.9

R1011

R1016

100

U1003

67 48 3

5

9 210 111

PGND

VCC1VCC2

RFINRFOUT

VEN

NCISO

VMODEGND

CPL

FL1010

5 3 2

4 1INOUT

G1G2G3

1880,1960MHz

FL1008

758492

3

16ANT RX

TX

GND1 GND6

GND2 GND5

GND3 GND4

U1004

6

7 4

8 3

5

9 2

10 1

11PGND

VCC1VCC2

RFINRFOUT

VEN

NCISO

VMODEGND

CPL

DNI

C1098

U1005

6

7 4

8 3

5

9 2

10 1

11PGND

VCC1VCC2

RFINRFOUT

VEN

NCISO

VMODEGND

CPL

100p

C1103

100p

C1069

100p

C1086

100p

C1087

R1015

100

R1014

68

L1024DNI

PA_ON0

PA_ON1

PA_R0

PA_R0

PA_R0

WCDMA_1900_RTX

WCDMA_2100_RTX

WCDMA_1900_TX_OUT

WCDMA_900_RTX

WCDMA_2100_TX_OUT

WCDMA_900_TX_OUT

PDET_IN

PA_ON2

897.5MHz, 942.5MHz

1950MHz, 2140MHz

W1900W1900

W2100

W2100 TX(1920 -1980 MHz)

W2100

W900W900 TX(880 - 915 MHz)W850 TX(824 - 849 MHz)

W900

9.5dB

W1900 TX(1850 -1910 MHz)

TP2

TP3TP4

4. TROUBLE SHOOTING



For testing, Max power output is needed.

Chenck ANT_SEL 0,1,2(High,Low,Low)

Check TP1Over 21 dBm?



RF TX Level is OKYes

No

Check PAM BlockRefer to 4.5.4

Check Tx ModuleYes

No


Check Duplexer

Check RTR6285A

Yes

Yes

No

No

RTR6285 Maximum output Power = 7 dBm

RTR6285 minimum output Power = -80 dBm

PAM(ACPM-5281) = Maximum input Power = 10 dBm

4. TROUBLE SHOOTING



4.5.4 Checking PAM Block

PAM control signal

PA_ON0 (C1069), PA_ON1(C1087), PA_ON2(C1103) : PAM Enable

PA_R0: PAM Gain Control

PA_ON must be HIGH (over 2.6V)

PAM IN/OUT Signal

When PAM is under the operation of high power mode (PA_R0(C1068) : Low),

PAM OUT power must be over 21 dBm

PAM IN power must be under 10 dBm

TP3 TP2

TP1

4. TROUBLE SHOOTING



L102

7

100p

100p

C10

65

1.8n

C10

96

C1080

DNI

C10

78

100p

C1083

3.9n

100p

L104

6

100p

C10

95

C1067

DNI

C10771p

C10

79

2.2n

C1130

1.8pC1128

0.5p

6.8n

L1045

C1082

0.5p

C10

88

8.2p

C10

89

6.8p

L103

9

1n

C1068

DNI

L102

6

5.6n

L103

8

2.7n

C1102

DNI

1n

C1122

100p

L102

8

R1019

DNI

R1020

DNI

DNI

L1030

L1052

DNI DNI

L1049

1n

C1126

C1123

2.2u 1nC1124

C1125

2.2u

C1066

2.2u

+VPWR

897.5 MHz

FL1004

5 3 2

4 1INOUT

G1G2G3

1950MHz

FL1007

5 3 2

4 1INOUT

G1G2G3

+VPWR

+VPWR

49.9

R1011

R10

16

100

U1003

67 48 3

5

9 210 111

PGND

VCC1VCC2

RFINRFOUT

VEN

NCISO

VMODEGND

CPL

FL1010

5 3 2

4 1INOUT

G1G2G3

U1004

6

7 4

8 3

5

9 2

10 1

11PGND

VCC1VCC2

RFINRFOUT

VEN

NCISO

VMODEGND

CPL

DN

I

C10

98

U1005

6

7 4

8 3

5

9 2

10 1

11PGND

VCC1VCC2

RFINRFOUT

VEN

NCISO

VMODEGND

CPL

100p

C1103

100p

C1069

100p

C1086

100p

C1087

R10

15

100

R1014

68

PA_ON0

PA_ON1

PA_R0

PA_R0

PA_R0

WCDMA_1900_TX_OUT

WCDMA_2100_TX_OUT

WCDMA_900_TX_OUT

PDET_IN

PA_ON2

W1900W1900

W2100W2100

W900W900

9.5dB

TP3TP2

TP1

4. TROUBLE SHOOTING



Set the phone is ON and PDM is 210


Check TP2RA_R0 2.6V


RF TX Level is OKYes

No

Change the board

Check MSM8225Yes

No

Check RTR6285AYes

No

4. TROUBLE SHOOTING



4.5.5 Checking RF Rx Level

TP1

Test Point (RF Rx Level)

TP3 TP4

TP5

TP2

Bias

4. TROUBLE SHOOTING



2.2nC1001L1001

2.7n

L1004

0.5p

68

R1003

100

R1004 R1005

100

L1005100n

SW1002

43

2

1ANT COMMON

G3 G4

R1002

2.2K

R1007

SW1001

G1

ANTG2

39pC1015

U1002

GND12

VBATT5

GND10

27

GND219

GND9

26

GND320

GND8

25GND4

21

ANT18

PGND1

GND522

GND6

23GND7

24

PGND1341

PGND1442

PGND1543

PGND1644

HB_IN1

GND11

28LB_IN

3

VAPC4

BS2BS1TXEN_

WCDMA3WCDMA2

L1002DNI

L1003DNI

GSM_HB_TX

GSM_PA_RAMP0603


FEM

TP1

5.6nL1025

FL1005

75

84

92

3

16ANT RX

TX

GND1 GND6

GND2 GND5

GND3 GND4

L1035

1.8n

100p

C1063

12nL1029

FL1003

75

84

92

3

16ANT RX

TX

GND1 GND6

GND2 GND5

GND3 GND4

L1044

10n

L1034

0.5p

L1032

1n

100p

L1033

L1041

100p

L1043DNI

L1023

100p

DNIC1074

100p

L1042

C1092DNI

1880,1960MHz

FL1008

758492

3

16ANT RX

TX

GND1 GND6

GND2 GND5

GND3 GND4

L1024DNI

WCDMA_1900_RTX

WCDMA_2100_RTX

WCDMA_900_RTX

897.5MHz, 942.5MHz

1950MHz, 2140MHz

W2100 TX(1920 -1980 MHz)

W900 TX(880 - 915 MHz)W850 TX(824 - 849 MHz)

W1900 TX(1850 -1910 MHz)

TP2

4. TROUBLE SHOOTING



C1119

36

R1018

27K

C1114

68

C1094 10n

3pC1116

9.1nL1058

3.3n

L1047

C1092DNI

22p

C1101

C1112

22p

22p

C1120

L1054

2.7n

C1106

10p U1006

9

8

7

6

5

104

113

122

131

14

15

16

17PGND

RFOUTM

RFOUTH

RFOUTL

NC

RREF

VGS

VEN1

VCC

VEN2

RFGNDH1

RFINL

RFGNDH2

RFINM

RFINH

RFGNDM1

RFGNDM2

VREG_RF_2.7V

C1093

10p

ANT_SEL0

ANT_SEL2

TP3

Bias

2.2p

C1111

C1119

36

L1055

100p

DNI

C1109

C1115

2.2p

C1114

68

C1113

DNI 18n

L1057

C1121

1n

C1118

6.8n

C1117

1n

DNI

L1059

942.5MHz

FL1011

45

1

32

G1 O1ING2 O2

FL1012

1960MHz45

1

32

G1 O1ING2 O2

RX_WCDMA_1900_P

RX_WCDMA_1900_M

RX_WCDMA_900_P

RX_WCDMA_900_M

RX_WCDMA_2100

3.9p

C1073

C1085

3.9p

C1075

DNI

L1037

100p

DNI

C1081

L1040

1.2n

L1036

1.2n

FL1006

2140MHz

45

132

G1 O1ING2 O2

GND

RX_WCDMA_2100_MIX_INM

RX_WCDMA_2100_MIX_INP

TP4

TP5

4. TROUBLE SHOOTING



Set the Phone Rx is ON

Check BIAS over2.1 V ?

Check TP1 Signal exist ?


Check bias block soldering

Yes

No

Change the board

Check RF Switch (M/S)

Yes

No




Check TX Module Refer 1.4

Check Duplexer

Check LNA

Check RTR6285 and Rx SAW filter

Yes

Yes

Yes

Yes

No

No

No

No

4. TROUBLE SHOOTING



2. Check ANT. SW Module

1. Check TCXO Block

3. Check RF TRX Level

START

4. Re-download SW & Cal

4.6 Checking GSM Block

12

3

4. TROUBLE SHOOTING



4.6.1 Checking TCXO Block

Refer to 4.3

4.6.2 Checking FEM Block

Refer to 4.4

4.6.3 Checking RF TX level

TP1

TP3

TP2

4. TROUBLE SHOOTING



Schematic of GSM/DCS/PCS Tx Block

2.2nC1001L1001

2.7n

L1004

0.5p

68

R1003

100

R1004 R1005

100

L1005100n

SW1002

43

2

1ANT COMMON

G3 G4

C1034

DNI

C1035 DNI

C1036 DNI

DNI

C1038

R1002

2.2K

68

R1007

R1009

100 100

R1008

SW1001

G1

ANTG2

39pC1015

47pC1033

U1002

GND12

VBATT5

GND10

27

GND219

GND9

26

GND320

GND8

25

GND421

ANT18

PGND331

PGND230

PGND129

GND522

GND6

23GND7

24

PGND634

PGND533

PGND432

PGND7

35

PGND8

36

PGND9

37

PGND1038

PGND1139

PGND1240

PGND1341

PGND1442

PGND1543

PGND1644

HB_IN1

GND11

28

LB_IN3

VAPC4

BS26

BS17

TXEN_8

MODE

9

WCDMA317

TEMP

10

RX4

11

RX3

12

RX2

13

RX1

14

WCDMA115

WCDMA216

L1002DNI

L1003DNI

C103210u

ANT_SEL0

ANT_SEL3ANT_SEL2ANT_SEL1

+VPWR

GSM_HB_TX

GSM_LB_TX

GSM_PA_RAMP

0603

0603

0603


10dB Atten.

2mmFEMGSM900(880-915MHz)GSM850(824-849MHz)

TP1

TP3

TP2

4. TROUBLE SHOOTING



Check TP1 If GSM over 31 dBm ?

If DCS/PCS over 28 dBm ?

Check TP2, 3If GSM(TP2) under 6 dBm ?

If DCS/PCS(TP3) under 6 dBm ?

Check RTR & PAD

GSM/DCS/PCSTx is OKCheck other part

Check Tx Module(ASM+EDGE PAM)Refer to 4.4

Check soldering and components

Check TCXO BlockRefer to 1.3

Yes

Yes

No Problem

Change the board

Start

No

No

Still exist Problem

4. TROUBLE SHOOTING



4.6.4 Checking RF Rx Block

TP1

TP2

4. TROUBLE SHOOTING



Schematic of GSM/DCS/PCS Rx Block

4.7p

L1022

4.7p

L1020

L1021

4.3n8.2n

C1057

C1053

DNI

2.7n

C1054

C1019

100p

100p

L1009

2.7n

L1017

56n

L1008

L1015

2.7p

L1018

2.7p

2.2p

L1013

2.2p

L1010

C1014

1.8p

C1024

1.8p

39n

C1025

L1007

18n

4.7n

L1016

15n

L1012

L1019

DNI

C1037

DNI

881.5MHz,942.5MHzFL1001

10352

819674

IN_881_5 OUT_881_5_1

OUT_881_5_2

OUT_942_5_1

IN_942_5 OUT_942_5_2

GND1 GND3

GND2 GND4

FL10021842.5MHz,1960MHz

10352

819674

IN_1842_5 OUT_1842_5_1

OUT_1842_5_2

OUT_1960_1

IN_1960 OUT_1960_2

GND1 GND3

GND2 GND4

L1011

DNI

L1006

DNI

GND

GSM900_RX_P

GSM900_RX_M

DCS_RX_M

DCS_RX_P

GSM850_RX_M

GSM850_RX_P

PCS_RX_M

PCS_RX_P

GSM(869-894 MHz)

GSM(925-960 MHz)

PCS(1930-1990 MHz)

DCS(1805-1880 MHz)

GSM QuadTP2

4. TROUBLE SHOOTING



Set the Phone Rx is ON



Check RF Switch (M/S)

Yes

No

Change the board

Check FEM Block Refer to 4.4

Yes

No

2.2nC1001L1001

2.7n

L1004

0.5p

68

R1003

100

R1004 R1005

100

L1005100n

SW1002

43

2

1ANT COMMON

G3 G4

R1002

2.2K

R1007

SW1001

G1

ANTG2

39pC1015

U1002

GND12

VBATT5

GND10

27

GND219

GND9

26

GND320

GND8

25

GND421

ANT18

PGND1

GND522

GND6

23GND7

24

PGND1341

PGND1442

PGND1543

PGND1644

HB_IN1

GND11

28

LB_IN3

VAPC4

BS2BS1TXEN_

WCDMA3WCDMA2

L1002DNI

L1003DNI

GSM_HB_TX

GSM_PA_RAMP0603


FEM

TP1

4. TROUBLE SHOOTING



4.7 GPS/WIFI/BT RF Component

RF Component(GPS)

Reference Description

CN1001ANTENNA PAD

connected to Carrier type antenna

FL1006 GPS SAW FILTER

U1007 GPS LNA

CN1001

U1007

FL1006

4. TROUBLE SHOOTING



RF Component(WIFI)


CN9001ANTENNA PAD

connected to Carrier type antenna

U9001 BT module

U9003 WiFi module

FL9003 FEM

U9001FL9003

U9003CN9001

4. TROUBLE SHOOTING



GPS Signal PATH (main board bottom)

GPS Rx PATH

4.8 GPS/WIFI/BT SIGNAL PATH

4. TROUBLE SHOOTING



WiFi / BT Signal PATH

WiFi / BT Tx and Rx PATH

WLAN RXBT TRX

WLA

N T

X

4. TROUBLE SHOOTING



4.9 GPS/WIFI/BT Trouble shooting

4.9.1 A-GPS Block

TP2

TP1

CN

1001

FE

ED

C1129

1n

DNIL1051L1050

8.2n

C1097

3.9n

U1007

3

2

5

4

1R

F_I

N

FIL_OUT

VDD

S_D

GND

L1048

3.3n

L1056

3.3n

C1107DNI

R1017

12

L1053

4.7n

R1013

12DNIC1100

6.8pC1110

1575.42 MHz

FL1009

52

413G3

IN OUTG1 G2

C1099DNI

C1108DNI

VREG_RF_2.7V

18p

C1104

0.1u

C1105

GPS_MODE GPS_IN

Near To LNA

LNA for the GPS

for contacting to GND

TP2

TP1

4. TROUBLE SHOOTING



Set the phone GPS is ON

Check TP1About 2.7V? Check power LRC filter soldering

No

Yes

Check TP2About 2.6V? Check SW and NV item

No

Yes

Change the board

4. TROUBLE SHOOTING



4.9.2 WLAN/BT/FM Block

START

1. Check the Power

3. Check the Module

2. Check the Clock

Component Change

1

2

3

31

1

4. TROUBLE SHOOTING



CN9001

FEED

L9011

1.8nL9012DNI

C9057

0.5p

C9034

22p

DNI

C9031

C9055

100p

C9025

100p

C9032

DNI

DNI

C9027

2.4n

L9013

C9033

DNI

FL9003

2400MHz,2500MHz

13117

1224

10986

51

3WLAN_RX

WLAN_TXBT_TRX

GND1GND2GND3GND4

TR_SW0TR_SW1TR_SW2

ANTCPL

PGND

C9029

DNI

3.9n

L9010

C9028

DNI

C9026

DNI

BT_RF_QCT

WLAN_SW_[0]WLAN_SW_[1]WLAN_SW_[2]

WLAN_PWR_DET_IN

WLAN_RF_RX

WLAN_RF_TX

for contacting to GND

BT/WI-FI FRONT-ENDModule part

SW0 SW1 SW2

WiFi Rx-ANT HIGH LOW LOW

WiFi Tx-ANT LOW HIGH LOW

BT-ANT LOW LOW HIGH

ANTENNA SWITCH MODULE LOGIC

2.2K

R8008

2.2K

R8007

VREG_MSME_1.8V

U9001

334353017205226272545

5151213

19

3221

55503754

10414

24

31

57404736

534258

515646

4943

2928336

1117218982216443938482341GND2

GND3

AGND_FM1

AGND_FM2

AGND_FM3

AGND_FM4

GND4

AGND_FM

AGND_BT1

AGND_BT2

AGND_BT3

AGND_BT4

AGND_BT5

AGND_BT6

AGND_BT7

GND1SYS_RST_NI2C_SDAI2C_SCL

FM_HRX_INFM_PRXTX_IO

FM_I2S_SDFM_I2S_WSFM_I2S_SCK

BT_PCM_INBT_PCM_CLKSLEEP_CLK

BT_UART_RXDBT_UART_TXDBT_UART_CTSBT_UART_RTS

VDD_IO

VDD_XO_BIAS

VREG_DIGVREG_ANA

VDD_LDO_IN

VDD_FM_1P3_1VDD_FM_1P3_2VDD_FM_1P3_3VDD_FM_1P3_4

VDD_DIG_1P3VDD_FM_DAC

VDD_BT_PA

VDD_BT_1P3_1VDD_BT_1P3_2VDD_BT_1P3_3VDD_BT_1P3_4

FM_RDS_INT

SYS_CLK

FM_LO_L

FM_LO_R

BT_PCM_O

UT

BT_PCM_SYNC

BT_CLK_REQ

BT_ACTIVE

BT_STATUS

TX_CONFIRM

BT_RFIO

0

R9004

C9020

0.1u

22p

C9001

10n

C9021

L9004

82n

1MR9006

C9011

1u

C9012

10n

C9013

10p 10n

C9014

10p

C9015 C9018

10n 10n

C9019

+3V_WLAN_WCN

82nL9003

1M

R9001

47p

C9005

VREG_MSME_1.8V

C9016

4.7u

C9017

4.7u

68n

L9002

SLEEP_CLK

BT_PCM_OUT

BT_PCM_OUT

BT_PCM_IN

BT_UART_RXBT_UART_TX

FM_RDS_INT

FM_L

FM_R

BT_PCM_CLK

BT_PCM_CLK

BT_PCM_SYNC

BT_PCM_SYNC

BT_UART_CTSBT_UART_RTS

BT_FM_CLK_W

CN

FM_ANT

NFC_WCN_HWI2C_SDANFC_WCN_HWI2C_SCL

BT_FM_CLK_REQ_W

CN

BT_RST_N

BT_RF_Q

CT

BT_ACTIVE

BT_PRIORITY

WLAN_ACTIVE

BT/FM Module : WCN2243

clos

e to

pin

13

clos

e to

pin

5

clos

e to

pin

54

clos

e to

pin

37

4. TROUBLE SHOOTING



[Figure] Schematic of WiFi/BT module

U9003

63

33535645

7184

75

82

28

1316615

1423

112112

1722

878041

2920

39192625927

18SLEEP_CLK

GND_D1DNC1GND_D2GND_D3WLAN_RST_NWLAN_ACTIVE

BT_PRIORITYBT_ACTIVE

TCXO_INRF_RXPDET_IN

PA_ENWLAN_CLK_REQ

TR_SW_EN_0TR_SW_EN_1TR_SW_EN_2

SDIO_CMDSDIO_CLK

SDIO_DATA3SDIO_DATA2SDIO_DATA1SDIO_DATA0

DNC2

PLL_EXT_LPF

GND_A

RF_TX_DARF_TX_PA

GND_A1GND_A2GND_A3GND_A4

REXT

C9045

470p

C9051 1n

10K

R9009

SLEEP_CLK

WLAN_CLKWLAN_CMD

WLAN_SDIO[3]WLAN_SDIO[2]WLAN_SDIO[1]WLAN_SDIO[0]

WLAN_RST_N

WLAN_CLK_WCN

WLAN_CLK_REQ_WCN

BT_ACTIVEBT_PRIORITY

WLAN_ACTIVE

WLAN_SW_[0]WLAN_SW_[1]WLAN_SW_[2]

WLAN_PWR_DET_INWLAN_RF_RX

WLAN_RF_TX

Wi-Fi : WCN1314

C9046

10u10u

C9056

FB9002

60

2.2u

C9042

C9054

2.2u

DNI

C9047

C9043

220n

C9037

100n

0.1u

C9052

100p

C9040

100n

C9041

100n

C9039

C9044

10n

10n

C9048

100p

C9049 C9050

100p

100p

C9053

+1V2_WLAN_WCN

C9030

10n

+1V8_WLAN_TCXO

C9038

4.7u

+3V_WLAN_WCN

VREG_MSME_1.8V

+1V3_MSM_A3_WCN

+1V2_MSM_A2_WCN

240FB9001

U9003

7785

64

5830

43

40425557

696859

50836544617372603452

86

47373224

70

101

73

79

49627654678166

51

78

7435

4

2

8

38365

484631

VDD_CORE1VDD_CORE2VDD_CORE3

VDD_CORE_AON1VDD_CORE_AON2VDD_CORE_AON3

VDD_IO

VDD_FEM

VDD_SDIO

VDD_RFA1VDD_RFA2

VDD_PA

VDD_TCXO

VDD_RFA3VDD_RFA4VDD_RFA5VDD_RFA6VDD_RFA7VDD_RFA8VDD_RFA9

GND_A21

GND_D1GND_D2

GND_D3GND_D4

GND_A2

GND_D5GND_D6GND_D7GND_D8

GND_A3

GND_A4GND_D9GND_A5GND_A6GND_A7GND_A8GND_A9GND_A10GND_A11GND_A12

GND_A13GND_A14GND_A15

GND_A16GND_A17GND_A18GND_A19

GND_A20

GND_A1GND_A22

GND_A23

VDD_RFA10VDD_RFA11

colse to pin78

WiFi : WCN 1314

Wi-Fi : WCN1314

Wi-Fi : WCN1314

4. TROUBLE SHOOTING



START

TP1,2,3 is OK? Check the power blockNo

Yes

SDIO ok?UART ok? Module Check

No

Yes

Board Change

Test point Description

Test point Net name Description

TP1 +3V_WLAN_WCN Power for BT/WiFi BB core and WiFi power Amp. (V Batt)

TP2 VREG_MSME_1.8V Power for BT power Amp.(1.8V)

TP3 VREG_MSME_1.8V Power for host interface (1.8V)

TP3

TP1

TP2

4. TROUBLE SHOOTING



4.10 NFC Component


U8001 NFC Chip

X2001 TCXO

X2001(TCXO)

U8001NFC Chip

4. TROUBLE SHOOTING



4.10.1 NFC Signal Path

NFC RF TX

NFC RF RX

NFC Signal PATH

NFC ANT

4. TROUBLE SHOOTING



4.10.2 NFC Trouble Shooting

X2001(TCXO)

U8001NFC Chip

C2026(TP1)

C28020(TP2)

4. TROUBLE SHOOTING



START

Check the PowerC8020(TP2)

Check the ModuleU8001

Check the ClockC2026(TP2)

Component Change

4. TROUBLE SHOOTING



4.11 Power on Trouble shooting

Power On sequence of P710 is :

Power key press -> KPD_PWR_N go to low -> PM8029 Power Up -> VREG_MSMC1_1.1V (L4002), VREG_MSMC2_1.1V

(L4003), VREG_MSME_1.8V (L4004), VREG_P3_2.85V (C4062), VREG_MSMA1_2.6V (C4057), VREG_MSMA2_1.2V (C4053)

VREG_TCXO_2.85V (C4058) power ON -> Phone booting and PS_HOLD(R4010) go to High

KB101

VA102

100

R112KPD_PWR_N

START

Battery voltage. higher than 3.2V?

R112(TP1) FPCB go to low when key press?

Is clock ok? C2027(TP2) : 19.2MHz X4001(TP10) : 32.768KHz

Change or charging the Battery

Check soldering of R112

Change the Main board

No

No

No

No

Yes

Yes

Yes

Yes

VREG_MSMC1_1.1V(TP3),VREG_MSMC2_1.1V(TP4), VREG_MSME_1.8V(TP5) ,VREG_PLL_1.1V(TP6),

VREG_TCXO_2.85V(TP7), VREG_MSMA1_2.6V(TP8) VREG_MSMA2_1.2V(TP9) power up?

Re-download sw

Change the Main board

4. TROUBLE SHOOTING



PM8029 Power sequence

4. TROUBLE SHOOTING



TP1 : R112 KPD_PWR_N

TP2 : C2027 TCXO 19.2MHz

TP3 : L4002 VREG_MSMC1_1.1V

TP4 : L4003 VREG_MSMC2_1.1V

TP5 : L4004 VREG_MSME_1.8V

TP6 : C4054 VREG_PLL_1.1V

T

LG-P710 Service Manual ENG

Documents