LG P768 Service Manual

Internal Use Only

Service Manual

LG-P768

Date: October, 2012 / Issue 0.9

Table Of Contents

1. INTRODUCTION ..................................................................... 3

1.1 Purpose ........................................................................................................3

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

1.3 Abbreviations.............................................................................................5

2. PERFORMANCE ...................................................................... 7

2.1 Product Name ............................................................................................7

2.2 Supporting Standard ..............................................................................7

2.3 Main Parts : GSM Solution .....................................................................7

2.4 HW Features ...............................................................................................8

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

2.6 HW SPEC. ................................................................................................. 13

2.7 P768 Figures ............................................................................................ 26

3. CIC AND SERVICE CENTER .................................................. 27

3.1 CIC FAQ ...................................................................................................... 27

4. TROUBLE SHOOTING .......................................................... 44

4.1 RF Component .......................................................................................44

4.2 SIGNAL PATH ........................................................................................... 46

4.3 Checking TCXO Block ........................................................................... 49

4.4 Checking WCDMA Block ....................................................................51

4.5 Checking GSM Block ............................................................................ 57

4.6. GPS/WIFI/BT RF components .......................................................... 63

4.7 GPS/WIFI/BT SIGNAL PATH ................................................................ 65

4.8 Power ON Troubleshooting ...............................................................67

4.9 Charger Troubleshooting ................................................................... 71

4.10 USB Trouble shooting .......................................................................73

4.11 Audio trouble ....................................................................................... 76

4.12 Camera trouble(8M/ 0.3M) .............................................................. 86

4.13 Main LCD trouble ................................................................................ 91

4.14 SIM detect Trouble shooting .......................................................... 94

4.15 Vibrator Troubleshooting ................................................................ 96

4.16 Compass or Accelerometer Sensor on/o trouble ............... 99

4.17 Proximity Sensor on/o trouble .................................................101

4.18 Touch trouble .....................................................................................103

5. DOWNLOAD .......................................................................105

6. BLOCK DIAGRAM ...............................................................125

7. CIRCUIT DIAGRAM ............................................................144

8. BGA PIN MAP ....................................................................159

9. PCB LAYOUT .......................................................................168

10. CALIBRATION ...................................................................178

11. HIDDEN MENU .................................................................198

12. DISASSEMBLE GUIDE ......................................................222

13. EXPLODED VIEW & REPLACEMENT PART LIST .............231

LGE Internal Use Only

- 2 -

Only for training and service purposes

1. INTRODUCTION

1.1 Purpose

1. INTRODUCTION

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 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 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 this phone or compatibility with the network, 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 this model 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.

LGE Internal Use Only

- 3 -

Only for training and service purposes

1. INTRODUCTION

E. Notice of Radiated Emissions

2. INTRODUCTION

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 different.

G. Interference and Attenuation

Phone may interfere with sensitive laboratory equipment, medical equipment, etc.Interference from unsuppressed engines or electric motors may cause problems.

H. Electrostatic Sensitive Devices

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.

ATTENTION

• 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.

LGE Internal Use Only

- 4 -

Only for training and service purposes

1.3 Abbreviations

1. INTRODUCTION

For the purposes of this manual, following abbreviations apply:

Automatic Power ControlAPC

1. INTRODUCTION

BasebandBB

Bit Error RatioBER

Constant Current – Constant VoltageCC-CV

Digital to Analog ConverterDAC

Digital Communication SystemDCS

dB relative to 1 milli wattdBm

Digital Signal ProcessingDSP

Electrical Erasable Programmable Read-Only MemoryEEPROM

Electrostatic DischargeESD

Flexible Printed Circuit BoardFPCB

Gaussian Minimum Shift KeyingGMSK

General Purpose Interface BusGPIB

LGE Internal Use Only

Global System for Mobile CommunicationsGSM

International Portable User IdentityIPUI

Intermediate FrequencyIF

Liquid Crystal DisplayLCD

Low Drop OutputLDO

Light Emitting DiodeLED

Offset Phase Locked LoopOPLL

- 5 -

Only for training and service purposes

1. INTRODUCTION

Power Amplifier ModulePAM

Printed Circuit BoardPCB

Programmable Gain AmplifierPGA

Phase Locked LoopPLL

Public Switched Telephone NetworkPSTN

Radio FrequencyRF

Receiving Loudness RatingRLR

Root Mean SquareRMS

Real Time ClockRTC

Surface Acoustic WaveSAW

Subscriber Identity ModuleSIM

Sending Loudness RatingSLR

Static Random Access MemorySRAM

WAP

LGE Internal Use Only

Pseudo SRAMPSRAM

Side Tone Masking RatingSTMR

Travel AdapterTA

Time Division DuplexTDD

Time Division Multiple AccessTDMA

Universal Asynchronous Receiver/TransmitterUART

Voltage Controlled OscillatorVCO

Voltage Control Temperature Compensated Crystal OscillatorVCTCXO

Wireless Application Protocol

- 6 -

Only for training and service purposes

2. PERFORMANCE

LG-P768 Product SPEC

2.1 Product Name

LG-P768 : WCDMA 900/2100+GSM850/EGSM/DCS/PCS

(HSUPA 5.8Mbps(cat6)/HSDPA 21Mbps(cat14)/GPRS Class33/EDGE Class33)

2.2 Supporting Standard

2.1 Product Name

2. PERFORMANCE

LG-P768 : WCDMA 900/2100+GSM850/EGSM/DCS/PCS

(HSUPA 5.8Mbps(cat6)/HSDPA 21Mbps(cat14)/GPRS Class33/EDGE Class33)

2.2 Supporting Standard

WCDMA(FDD1,8)/EGSM/GSM850/DCS1800/PCS1900

with seamless handover

Supporting Standard

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(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

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 OMAP4430 : TI

CP Chip XMM6260 : IMC

LGE Internal Use Only

- 7 -

Only for training and service purposes

LG-P768 Product SPEC

2.4 HW Features

Item Feature Comment

Form Factor DOP type

Battery

compatibilit

Size

Weight 125 g With Battery

PCB Any Layer , 0.8t

Stand by time

Charging time 3.5 hrs @ Power Off / 2150mAh

Talk time

RX sensitivity

TX output power

GPRS

y

EDGE

GPRS

Class 33

1) Capacity

Standard : Li-Ion , 2150mAh(Typ.)

2) Packing Type : Hard Pack Standard :

131.9 x 68.2 x 9.1 mm

2G Up to 450 hrs 3G Up to 450 hrs

2G Up to 350 min 2G Up to 420 min 3G Up to 420 min

WCDMA(FDD1) : -106.7dBm

WCDMA(FDD8) : -103.7 dBm

EGSM : -102 dBm GSM850 : -102 dBm DCS 1800 : -102 dBm

PCS 1900 : -102 dBm

WCDMA/

GSM/ GPRS

EGSM : 27 dBm GSM850 :27dBm

DCS 1800 : 26 dBm

PCS 1900 : 26 dBm

@ Paging Period 5 (2G)

@ Tx=Max(EGSM)

@ Tx=Max(DCS,PCS)

@ Tx = 12dBm (3G)

24dBm/3.84MHz,+1/-

EGSM : 33dBm GSM850 : 33 dBm DCS 1800 : 30 dBm PCS 1900 : 30 dBm

GPRS compatibility

2. PERFORMANCE

@ DRX 7 (3G)

WCDMA :

3dBm

EDGE compatibility EDGE Class 33

SIM card type

LGE Internal Use Only

Plug-In SIM

2.85V /1.8V

- 8 -

Only for training and service purposes

2. PERFORMANCE

LG-P768 Product SPEC

Display

Built-in Camera 8M Camera, 0.3M secondary 8M AF BSI CMOS CAM

Status Indicator No

Keypad

ANT

System connector 5 Pin Micro USB 2.0 HS

Ear Phone Jack 3.5Phi, 4 Pole, Stereo

PC synchronization Yes

Memory(AP)

Speech coding FR, EFR, HR, AMR,AMR-WB

Main LCD (qHD)

TFT Main LCD(4.7”,960x540)

Function Key : 3

Side Key : 3

Main : LDS(Laser Direct Structure) type

Sub : FPCB type

eMMC : 4GB

LP-DDR2 : 1GB

Function Key:

Home, Back, menu,

Side Key :

Volume up, down, power

key

Data & Fax Built in Data & Fax support

Vibrator Built in Vibrator

BlueTooth V3.0 HS

MIDI(for Buzzer

Function)

Music Player MP3/ WMA/AAC/AAC+/WAV/AC3 Video Player MPEG4, H.263, H.264 @ Full HD 30fps/ Divx HD

Camcorder

Voice Recording Yes

Speaker Phone mode

Support

Travel Adapter Yes

CDROM No

Stereo Headset Yes

Data Cable Yes

T-Flash

(External Memory)

MPEG4, H.264, H.263 @ 3D : 720p 2D : 1080p

72 Poly, MP3 Ringtone

30pfs

Yes

Yes Up to 32GB

LGE Internal Use Only

- 9 -

Only for training and service purposes

2. PERFORMANCE

LG-P768 Product SPEC

2.5 SW Features

Item Feature Comment

RSSI 0 ~ 4 Levels

Battery Charging 0 ~ 4 Levels Android 4.0 ICS

Key Volume 0 ~ 7 Level

Audio Volume 1 ~ 15 Level

Time / Date Display Yes

Multi-Language Yes

42 languages : UK English, BULGARIAN,

CROATIAN, CZECH, DANISH, DUTCH,

FINNISH, FRENCH, FRENCH BELGIUM,

FRENCH SWIITZERLAND, GERMAN

GERMAN, SWIITZERLAND, GREEK,

HUNGARIAN, ICELANDIC, ITALIAN,

ITALIAN SWIITZERLAND, MACEDONIAN,

NORWEGIAN, POLISH, PORTUGUESE,

ROMANIAN, SERBIAN SLOVAK,

SLOVENIAN, SPANISH, SWEDISH, TURKISH

ESTONIAN, LATVIAN, LITHUANIAN,

RUSSIAN, RUSSIAN ISRAEL, KOREAN, S

CHINESE, T CHINESE TW, BRAZILIAN

PORTUGUESE, SPANISH MEXICO,

CANADIAN FRENCH, US ENGLISH,

ENGLISH AUSTRAILIA, ENGLISH CANADA,

ENGLISH IRELAND

Quick Access Mode

PC Sync Yes

Speed Dial Yes Voice mail center -> 1 key

Profile Yes not same with feature phone setting

CLIP / CLIR Yes

Phone Book

Phone / Contacts /

Messaging / Menu

Name / Phone / E-mail /

There is no limitation on the number of

Address / Groups / Ringtone /

items.

Organization / IM / Notes /

It depends on available memory amount.

Nickname / Website / Events

Last Received

Number

LGE Internal Use Only

Yes

- 10 -

There is no limitation on the number of

items.

Only for training and service purposes

2. PERFORMANCE

LG-P768 Product SPEC

It depends on available memory amount.

Last Missed Number Yes

Search by Number

/ Name

Group Yes

Fixed Dial Number Yes

Service Dial Number No

Own Number Yes

Voice Memo Yes Support voice recorder

Call Reminder No Missed call popup

Network Selection Automatic

Mute Yes

Call Divert Yes Call forwarding

There is no limitation on the number of

items.

It depends on available memory amount.

Name / Number

There is no limitation on the number of

items.

It depends on available memory amount.

Read only (add/edit/delete are not

supported)

Call Barring Yes

Call Charge (AoC) Yes Call costs

Call Duration Yes

There is no limitation on the

SMS (EMS)

SMS Over GPRS No

EMS Melody / Picture

Send / Receive / Save

MMS MPEG4

Send / Receive / Save

Long Message 172 bytes SMS 5 concatenated

Cell Broadcast No

Download No

Game No

Calendar Yes

number of items.

EMS does not support.

It depends on available

memory amount.

No

Yes

LGE Internal Use Only

- 11 -

Only for training and service purposes

2. PERFORMANCE

LG-P768 Product SPEC

There is no limitation on the number of

Memo Yes

World Clock Yes

Unit Convert No

Stop Watch Yes

Wall Paper Yes

WAP Browser No Android browser Webkit 534.30

Download Melody /

Wallpaper

SIM Lock Yes Operator Dependent

SIM Toolkit Class 1, 2, 3, C, E

MMS Yes

EONS Yes

CPHS Yes V4.2

ENS Yes

Camera Yes

items.

It depends on available memory amount.

Yes Over web browser

8M AF /

Digital Zoom : x4

JAVA No Android do not support JAVA

Voice Dial Yes

IrDa No

Bluetooth Yes BT 3.0+HS

FM radio Yes

GPRS Yes Class 33

EDGE Yes Class 33

Hold / Retrieve Yes

Conference Call Yes Max. 7

DTMF Yes

Memo pad Yes Memo / Quick memo

TTY No

AMR Yes

SyncML Yes

IM Yes Gtalk

Email Yes

LGE Internal Use Only

- 12 -

Only for training and service purposes

LG-P768 Product SPEC

2.6. HW SPEC.

1) GSM transceiver specification

2.6 HW SPEC.

2. PERFORMANCE

1) GSM transceiver specication

Item Specification

Phase Error

EMC(Radiated Spurious Emission

Spectrum due to modulation out to

Frequency Error

Disturbance)

Transmitter Output power

Burst Timing <3.69us

less than 1800kHz offset

Rms : 5°

Peak : 20 °

GSM : 0.1 ppm

DCS/PCS : 0.1 ppm

GSM/DCS : < -28dBm

GSM850, EGSM : 5dBm ~ 33dBm ± 3dB

DCS/PCS : 0dBm ~ 30dBm ± 3dB

200kHz : -36dBm

600kHz : -51dBm/-56dBm

GSM850, EGSM :

1800-3000kHz :< -63dBc(-46dBm)

3000kHz-6000kHz : <-65dBc(-46dBm)

larger than 1800kHz offset to the

edge of the transmit band

Spectrum due to switching transient

Reference Sensitivity – TCH/FS Class II(RBER) : -105dBm(2.439%)

Usable receiver input level range 0.012(-15 - -40dBm)

Intermodulation rejection – Speech

channels

AM Suppression

- GSM : -31dBm

- DCS : -29dBm

Timing Advance ± 0.5T

6000kHz < : < -71dBc(-46dBm)

DCS, PCS :

1800-3000kHz :< -65dBc(-51dBm)

6000kHz < : < -73dBc(-51dBm)

400kHz : -19dBm/-22dBm(5/0), -23dBm

600kHz : -21dBm/-24dBm(5/0), -26dBm

± 800kHz, ± 1600kHz

: -98dBm/-96dBm (2.439%)

-98dBm/-96dBm (2.439%)

LGE Internal Use Only

- 13 -

Only for training and service purposes

LG-P768 Product SPEC

2) WCDMA transmitter specification

Item

Specification

2) WCDMA transmitter specication

2. PERFORMANCE

Transmit Frequency

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

Frequency Error within ±0.1 PPM

Open Loop Power Control

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)

BD1: 1920 ~ 1980 MHz

BD8: 880 MHz ~915 MHz

Normal Conditions : within ±9 dB,

Extreme Conditions : within ±12 dB

> 33 dB @ ±5 MHz,

> 43 dB @ ±10 MHz

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

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

common

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

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

<-60dBm/3.84MHz RW @791MHz ≤f ≤821MHz

<-60dBm/3.84MHz RW @860MHz ≤f ≤895MHz

Spurious Emissions

|f-fc| > 12.5 MHz

<-60dBm/100kHz RW @921MHz ≤f ≤925MHz

<-67dBm/100kHz RW @925MHz ≤f ≤935MHz

<-79dBm/100kHz RW @935MHz ≤f ≤960MHz

<-60dBm/3.84MHz RW

@1475.9MHz ≤f ≤1510.9MHz

BD1

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

<-60dBm/3.84MHz RW

@1844.5MHz ≤f ≤1879.9MHz

<-41dBm/300kHz RW

@1884.5MHz ≤f ≤1919.6MHz

<-60dBm/3.84MHz RW @2110MHz ≤f ≤2170MHz

<-60dBm/3.84MHz RW @2620MHz ≤f ≤2690MHz

LGE Internal Use Only

- 14 -

Only for training and service purposes

2. PERFORMANCE

LG-P768 Product SPEC

<-60dBm/3.84MHz RW @791MHz ≤f ≤ 821MHz

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

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

BD8

Transmit Intermodulation

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

Peak Code Domain Error

< -71 dBm / 100 kHz RW @ 1805 MHz ≤ f ≤ 1830 MHz

< -71 dBm / 100 kHz RW @ 1830 MHz < f < 1880 MHz

< -60 dBm / 3.84MHz RW @ 2110 MHz < f < 2170 MHz

< -60 dBm / 3.84MHz RW @ 2620 MHz < f < 2640 MHz

< -60 dBm / 3.84MHz RW @ 2640 MHz < f < 2690 MHz

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

when Interference CW Signal Level = -40 dBc

< -15 dB at Pout ≥ -20 dBm

LGE Internal Use Only

- 15 -

Only for training and service purposes

LG-P768 Product SPEC

3) WCDMA receiver specification

3) WCDMA receiver specication

Item Specification

2. PERFORMANCE

Receive Frequency

Reference Sensitivity Level

<REFÎ

>

or

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

Adjacent Channel Selectivity

(ACS)

Blocking Characteristic

Spurious Response

Intermodulation

BD1: 2110 ~ 2170 MHz

BD8: 925 MHz ~ 960 MHz

Band1 : BER < 0.001 when Îor = -106.7 dBm / 3.84 MHz

Band8 : BER < 0.001 when Îor = -103.7 dBm / 3.84 MHz

ACS > 33 dB where BER < 0.001 when

Îor = <REFÎ

> + 14 dB / 3.84 MHz

or

& Ioac = –52 dBm / 3.84 MHz @ ±5 MHz

BER < 0.001 when Îor = <REFÎ

> + 3 dB / 3.84 MHz

or

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

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

BER < 0.001 when Îor = <REFÎ

> + 3 dB / 3.84 MHz

or

& Iblocking = -44 dBm

BER < 0.001 when Îor= <REFÎ

> + 3 dB / 3.84 MHz

or

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

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

Spurious Emissions

Inner Loop Power Control

In Uplink

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

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

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

LGE Internal Use Only

- 16 -

Only for training and service purposes

LG-P768 Product SPEC

4) HSDPA transmitter specification

4) HSDPA transmitter specication

Item Specification

2. PERFORMANCE

Transmit Frequency

Maximum Output

Power

Spectrum

Emission Mask

1=2/15, 25.7~20.3dBm / 3.84 MHz

2=12/15 25.7~20.3dBm / 3.84 MHz

3=15/8 25.7~19.8dBm / 3.84 MHz

4=15/4 25.7~19.8dBm / 3.84 MHz

Sub-Test : 1=2/15, 2=12/15, 3=15/8, 4=15/4

Frequency offset from

carrier △f

2.5 ~ 3.5 MHz

3.5 ~ 7.5 MHz

7.5 ~ 8.5 MHz

BD1: 1920 ~ 1980 MHz

BD8: 880MHz ~ 915 MHz

Sub-Test

Minimum requirement

-35-15×(△f-2.5)dBc

-35-1×(△f-3.5)dBc

-35-10×(△f-7.5)dBc

Measurement

Bandwidth

30 kHz

1 MHz

8.5 ~ 12.5 MHz -49dBc 1 MHz

Adjacent Channel

Leakage

Power Ratio (ACLR)

Sub-Test : 1=2/15, 2=12/15, 3=15/8, 4=15/4

> 33 dB @ ±5 MHz

> 43 dB @ ±10 MHz

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

LGE Internal Use Only

- 17 -

Only for training and service purposes

LG-P768 Product SPEC

5) HSDPA receiver specification

Item

Specification

5) HSDPA receiver specication

2. PERFORMANCE

Receive Frequency

Maximum Input Level

(BLER or R), 16QAM Only

6) HSUPA Tx, Rx specication

6) HSUPA Tx, Rx specification

Item Specification

Maximum

Output Power

BD1: 2110~2170 MHz

BD8: 925 MHz ~960 MHz

Sub-Test : 1=2/15, 2=12/15, 3=15/8, 4=15/4

BLER < 10% or R >= 700kbps

Sub-Test

1=11/15 25.7~17.3dBm / 3.84 MHz

2=6/15 25.7~16.8dBm / 3.84 MHz

3=15/9 25.7~17.8dBm / 3.84 MHz

4=2/15 25.7~16.8dBm / 3.84 MHz

5=15/15 25.7~20.3dBm / 3.84 MHz

Sub-Test : 1=11/15, 2=6/15, 3=15/9, 4=2/15, 5=15/15

Spectrum

Emission

Mask

Adjacent

Channel

Leakage

Power Ratio

(ACLR)

Frequency offset from

Measurement

Minimum requirement

carrier △f

2.5 ~ 3.5 MHz

3.5 ~ 7.5 MHz

7.5 ~ 8.5 MHz

-35-15×(△f-2.5)dBc

-35-1×(△f-3.5)dBc

-35-10×(△f-7.5)dBc

Bandwidth

8.5 ~ 12.5 MHz -49dBc 1 MHz

Sub-Test : 1=11/15, 2=6/15, 3=15/9, 4=2/15, 5=15/15

> 33 dB @ ±5 MHz

> 43 dB @ ±10 MHz

30 kHz

1 MHz

LGE Internal Use Only

- 18 -

Only for training and service purposes

2. PERFORMANCE

LG-P768 Product SPEC

7) WLAN 802.11a transceiver specification

7) WLAN 802.11a transceiver specication

Item Specification

Transmit Frequency 5150 MHz ~ 5825 MHz ( CH36~CH165 )

Tx Power Level

Frequency Tolerance within ±20 PPM

Chip clock Frequency Tolerance within ±20 PPM

Spectrum Mask

Transmitter constellation error

(rms EVM)

Spurious Emissions

≤ 23dBm(5150 ~ 5350 MHz), ≤ 30dBm(5470 ~ 5725 MHz)

≤36dBm(5725~5825MHz)

≤ -20 @ ±11MHz offset (9Mhz ~ 11MHz) ≤ -28 @ ±20MHz offset (11MHz ~ 20Mhz) ≤ -40 @ ±30MHz offset (20MHz ~ 30Mhz)

≤ -5dB@6Mbps, ≤ -8dB@9Mbps, ≤ -10dB@12Mbps,

≤ -13dB@18Mbps, ≤ -16dB@24Mbps, ≤ -19dB@36Mbps,

≤ -22dB@48Mbps, ≤ -25dB@54Mbps

< -36 dBm @ 30 MHz to 47 MHz < -54 dBm @ 47 MHz to 74 MHz

< -36 dBm @ 74 MHz to 87,5 MHz

< -54 dBm @ 87,5 MHz to 118 MHz

< -36 dBm @ 118 MHz to 174 MHz < -54 dBm @ 174 MHz to 230 MHz < -36 dBm @ 230 MHz to 470 MHz < -54 dBm @ 470 MHz to 862 MHz

< -36 dBm @ 862 MHz to 1 GHz < -30 dBm @ 1 GHz to 5.15 GHz

< -30 dBm @ 5.35 GHz to 5.47 GHz

< -30 dBm @ 5.725 GHz to 26.5 GHz

Rx Min input Sensitivity

Rx Max input Sensitivity ≥ -30dBm(6,9,12,18,24,36,48,54Mbps) @ PER ≤ 10%

Rx Adjacent Channel

LGE Internal Use Only

Rejection

PER ≤ 10%

-82dBm@6Mbps, -81dBm@9Mbps, -79dBm@12Mbps

-77dBm@18Mbps, -74dBm@24Mbps, -70dBm@36Mbps

-66dBm@48Mbps, -65dBm@54Mbps

PER ≤ 10%,

ACR ≥ 16dB@6Mbps, ACR ≥ 15dB@9Mbps,

ACR ≥ 13dB@12Mbps, ACR ≥ 11dB@18Mbps,

ACR ≥ 8dB@24Mbps, ACR ≥ 4dB@36Mbps

ACR ≥ 0dB@48Mbps, ACR ≥ -1dB@54Mbps

※ACR shall be measured by setting the desired signal's

strength 3 dB above the rate-dependent

sensitivity specified in min input sensitivity

- 19 -

Only for training and service purposes

LG-P768 Product SPEC

8) WLAN 802.11b transceiver specification

8) WLAN 802.11b transceiver specication

Item Specification

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

Tx Power Level ≤ 20dBm

Frequency Tolerance within ±25 PPM

2. PERFORMANCE

Chip clock Frequency

Tolerance

Spectrum Mask

Power ramp on/off time ≤ 2us

Carrier Suppression ≤ -15dB

Modulation Accuracy

(Peak EVM)

Spurious Emissions

Rx Min input Sensitivity ≤ -76dBm(1Mbps,2Mbps,5.5Mbps,11Mbps) @ FER ≤ 8%

Rx Max input Sensitivity ≥ -10dBm(1Mbps,2Mbps,5.5Mbps,11Mbps) @ FER ≤ 8%

Rx Adjacent Channel

Rejection

≤ -30 @ fc-22MHz< f <fc-11MHz and fc+11MHz< f <fc+22MHz

within ±25 PPM

≤ -50 @ f < fc-22MHz and f > fc+22MHz

≤ 35%

< -36 dBm @ 30MHz ~ 1GHz

< -30 dBm above @ 1GHz ~ 12.75GHz

< -47 dBm @ 1.8GHz ~ 1.9GHz

< -47 dBm @ 5.15GHz ~ 5.3GHz

≥ 35dB @FER ≤ 8%,

interference input signal -70dBm@fc±25MHz(11Mbps)

LGE Internal Use Only

- 20 -

Only for training and service purposes

LG-P768 Product SPEC

9) WLAN 802.11g transceiver specification

9) WLAN 802.11g transceiver specication

Item Specification

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

2. PERFORMANCE

Transmitter constellation error

Tx Power Level ≤ 20dBm

Frequency Tolerance within ±25 PPM

Chip clock Frequency

Tolerance

Spectrum Mask

(rms EVM)

Spurious Emissions

Rx Min input Sensitivity

within ±25 PPM

≤ -20 @ ±11MHz offset (9Mhz ~ 11MHz)

≤ -28 @ ±20MHz offset (11MHz ~ 20Mhz)

≤ -40 @ ±30MHz offset (20MHz ~ 30Mhz)

≤ -5dB@6Mbps, ≤ -8dB@9Mbps, ≤ -10dB@12Mbps,

≤ -13dB@18Mbps, ≤ -16dB@24Mbps, ≤ -19dB@36Mbps,

≤ -22dB@48Mbps, ≤ -25dB@54Mbps

< -36 dBm @ 30MHz ~ 1GHz

< -30 dBm above @ 1GHz ~ 12.75GHz

< -47 dBm @ 1.8GHz ~ 1.9GHz

< -47 dBm @ 5.15GHz ~ 5.3GHz

PER ≤ 10%

-82dBm@6Mbps, -81dBm@9Mbps, -79dBm@12Mbps

-77dBm@18Mbps, -74dBm@24Mbps, -70dBm@36Mbps

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

Rx Adjacent Channel

LGE Internal Use Only

Rejection

-66dBm@48Mbps, -65dBm@54Mbps

PER ≤ 10%,

ACR ≥ 16dB@6Mbps, ACR ≥ 15dB@9Mbps,

ACR ≥ 13dB@12Mbps, ACR ≥ 11dB@18Mbps,

ACR ≥ 8dB@24Mbps, ACR ≥ 4dB@36Mbps

ACR ≥ 0dB@48Mbps, ACR ≥ -1dB@54Mbps

※ACR shall be measured by setting the desired signal's strength 3

dB above the rate-dependent

sensitivity specified in min input sensitivity

- 21 -

Only for training and service purposes

LG-P768 Product SPEC

10) WLAN 802.11n transceiver specification

10) WLAN 802.11n transceiver specication

2. PERFORMANCE

Item Specification

Transmit Frequency

Tx Power Level

Frequency Tolerance

Chip clock Frequency

Tolerance

Spectrum Mask

Transmitter constellation error

(rms EVM)

≤ 23dBm(5150 ~ 5350 MHz), ≤ 30dBm(5470 ~ 5725 MHz)

≤ -5dB@6.5Mbps, ≤ -10dB@13Mbps, ≤ -13dB@19.5Mbps,

2400 MHz ~ 2483.5 MHz ( CH1~CH13 )

5150 MHz ~ 5825 MHz ( CH36~CH165 )

≤ 20dBm(2400 ~ 2483.5 MHz)

within ±25 PPM(2400 ~ 2483.5 MHz)

within ±20 PPM(5150 ~ 5725 MHz)

within ±25 PPM(2400 ~ 2483.5 MHz)

within ±20 PPM(5150 ~ 5725 MHz)

≤ -20 @ ±11MHz offset (9Mhz ~ 11MHz)

≤ -28 @ ±20MHz offset (11MHz ~ 20Mhz)

≤ -45 @ ±30MHz offset (20MHz ~ 30Mhz)

≤ -16dB@26Mbps, ≤ -19dB@39Mbps, ≤ -22dB@52Mbps,

≤ -25dB@58.5Mbps, ≤ -28dB@65Mbps

[ 2400 MHz ~ 2483.5 MHz ( CH1~CH13 ) ]

Spurious Emissions

< -36 dBm @ 30MHz ~ 1GHz

< -30 dBm above @ 1GHz ~ 12.75GHz

< -47 dBm @ 1.8GHz ~ 1.9GHz

< -47 dBm @ 5.15GHz ~ 5.3GHz

[ 5150 MHz ~ 5725 MHz ( CH36~CH165 ) ]

< -36 dBm @ 30 MHz to 47 MHz

< -54 dBm @ 47 MHz to 74 MHz

< -36 dBm @ 74 MHz to 87,5 MHz

< -54 dBm @ 87,5 MHz to 118 MHz

< -36 dBm @ 118 MHz to 174 MHz

< -54 dBm @ 174 MHz to 230 MHz

< -36 dBm @ 230 MHz to 470 MHz

< -54 dBm @ 470 MHz to 862 MHz

< -36 dBm @ 862 MHz to 1 GHz

< -30 dBm @ 1 GHz to 5.15 GHz

< -30 dBm @ 5.35 GHz to 5.47 GHz

< -30 dBm @ 5.725 GHz to 26.5 GHz

LGE Internal Use Only

- 22 -

Only for training and service purposes

LG-P768 Product SPEC

PER ≤ 10%

2. PERFORMANCE

11) GPS receiver specication

Rx Min input Sensitivity

Rx Max input Sensitivity

Rx Adjacent Channel

Rejection

11) GPS receiver specification

Item

-82dBm@6.5Mbps, -79dBm@13Mbps, -77dBm@19.5Mbps

-74dBm@26Mbps, -70dBm@39Mbps, -66dBm@52Mbps

-65dBm@58.5Mbps, -64dBm@65Mbps

≥ -20dBm @ PER ≤ 10%(2400 ~ 2483.5 MHz)

≥ -30dBm @ PER ≤ 10%(5150 ~ 5825 MHz)

PER ≤ 10%,

ACR ≥ 16dB@6.5Mbps, ACR ≥ 13dB@13Mbps,

ACR ≥ 11dB@19.5Mbps, ACR ≥ 8dB@26Mbps,

ACR ≥ 4dB@39Mbps, ACR ≥ 0dB@52Mbps

ACR ≥ -1dB@58.5Mbps, ACR ≥ -2dB@65Mbps

※ACR shall be measured by setting the desired signal's

strength 3 dB above the rate-dependent

Sensitivity specified in min input sensitivity

Specification

Receive Frequency

Minimum Sensitivity

12) Current consumption

Bluetooth Off Bluetooth Connected

WCDMA

Only

GSM

Only

** Test condition for Standby current consumption should be as below.

: Measurement time 1hr, with Agilent & CMT JIG

4.5 mA under

(DRX=1.28)

4.5 mA under

(Paging=5 period)

1 satellite ≥-142dBm, 7 satellites ≥ -147dBm at coarse time

Stand by

(Paging=5 period)

1574.42 MHz ~ 1576.42 MHz

6 mA under

(DRX=1.28)

6 mA under

aiding

Voice Call

270 mA under

(Tx=12dBm)

340 mA under

(Tx=Max)

VT

NA

LGE Internal Use Only

- 23 -

Only for training and service purposes

LG-P768 Product SPEC

13) Battery life time

Stand by Voice Call VT

2. PERFORMANCE

WCDMA

GSM

14) NFC

Not Supported in P768

15) Charging hour

4 hour under (2150mAh battery, 850mA TA)

450 hours over

(DRX = 1.28)

450 hours over

(Paging Period = 5)

400 min over

(TX = 12dBm,

Low Pwr mode)

350 min over

(TX Level = Max)

NA

16) RSSI indicator (Based on Cell power)

BAR WCDMA GSM/DCS/PCS

4 > -87 ± 3dBm > -90 ± 3dBm

4  3 -87 ± 3dBm -90 ± 3dBm

3  2 -95 ± 3dBm -98 ± 3dBm

2  1 -103 ± 3dBm -102 ± 3dBm

1  0 -109 ± 3dBm -104 ± 3dBm

No service < -109 dBm By Network Notification

LGE Internal Use Only

- 24 -

Only for training and service purposes

LG-P768 Product SPEC

17) Battery indicator

Battery Bar Specification Unit

BAR 20 (Full) 98% over Remain%

BAR 20 -> 19 98%  97%

BAR 19 -> 18 93%  92%

BAR 18 -> 17 88%  87%

BAR 17 -> 16 83%  82%

2. PERFORMANCE

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 18%  17%

BAR 3 -> 2 13%  12%

BAR 2 -> 1 8%  7%

BAR 1 -> 0 3%  2%

Low Battery Pop-up 0% ~ 15% : popup at 5%, 15%(No call)

POWER OFF 2% under

LGE Internal Use Only

- 25 -

Only for training and service purposes

2.7 P768 Figures

2. PERFORMANCE

LGE Internal Use Only

- 26 -

Only for training and service purposes

3. CIC AND SERVICE CENTER

3.1 CIC FAQ

No FAQ Q&A

1 Q I can’t remember the PhoneLock password.

In case of password, pin lock, proceed with factory reset through Volume Up key + Home key + Power key with the power being o.

- For pattern lock with Gmail setting, press the forgot button to set a new pattern

A

lock.

- If Gmail isn’t set, use Factory Reset by pressing the Volume Up key + Home key + Power key.

3. CIC AND SERVICE CENTER

1. How to disable Pattern Lock, Password and PIN.

Request for development

2. Request to check out if it is specied in the user manual.

3. Description on HW Factory Reset Key combination and how to do it.

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

To write or delete les on the SD card, you need to connect the phone to your PC via a Media sync (MTP).

First, download and install the USB Driver. Then, check out the following with the USB communication cable being connected.

A

Request for development

LGE Internal Use Only

1.PC<-> SD CARD

2.PHONE<-> SD CARD

- 27 -

Only for training and service purposes

No FAQ Q&A

3 Q I use it abroad, but 3G connection doesn’t work.

See if Settings > Wireless & networks > More… > Mobile networks > Data Roaming are checked

If it is in uncheck condition, please check.

A

3. CIC AND SERVICE CENTER

Request for development

ex) 1. Europe<->Europe

2. Europe<->Continents(North America, Asia etc)

LGE Internal Use Only

- 28 -

Only for training and service purposes

No FAQ Q&A

4 Q The GPS location isn’t right, what should I do?

GPS signals are so weak that weather conditions or surrounding environment such as skyscrapers nearby and radio wave reection may keep locations from being captured.

If you check Setting->Location serivces -> GPS satellites and nd current location with GPS outdoor, you can reduce inaccuracy.

3. CIC AND SERVICE CENTER

A

5 Q The downloaded application isn’t compatible?

You need to describe the incompatible status specically. Incompatibility, in general, seems to result from not having considered the

compatibility when they built the apps.

A

Let us know the incompatible apps. We’ll nd out what the problems are. Thanks.

LGE Internal Use Only

- 29 -

Only for training and service purposes

No FAQ Q&A

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

Email supports EAS, IMAP4, POP3 protocol. The registration order is as follows. (If no account is registered, the registration screen is automatically connected when

using the e-mail.)

* EAS account

Among e-mail service providers, choose MS Exchange > enter e-mail address, password (The user name isn’t changed unless the e-mail ID and user name is dierent.) >Choose server address, domain and SSL > Set receiving interval, e-mail activating term > (Security setting following the server setting) > Conrm

3. CIC AND SERVICE CENTER

A

* IMAP4, POP3

Select among e-mail service providers > enter e-mail address, password > (Check if your account supports IMAP4 or POP3 service) > Choose receiving server and security type(Automatic enter and progress if the service provider is already entered) > Select sending server and security connection(Automatic enter and progress if the service provider is already entered) > (Generally, SMTP user name and password is the same as the e-mail address and password entered in the rst place) > Conrm

LGE Internal Use Only

- 30 -

Only for training and service purposes

LG P768 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual