LG D405 Service manual

Internal Use Only

Service Manual

LG-D405

Date: March, 2014 / Issue 0.9

Table Of Contents

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

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

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

2. PERFORMANCE ...................................................................... 5

2.1 Product Name ............................................................................................5

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

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

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

2.5 SW Features ................................................................................................9

2.6 HW SPEC. ................................................................................................. 12

3. TROUBLE SHOOTING .......................................................... 21

3.1 RF Component .......................................................................................21

3.2 SIGNAL PATH ........................................................................................... 23

3.3 Checking XO Block ................................................................................ 26

3.4 Checking FEMID (GSM, W B1/B2/B8) Block ................................. 28

3.5 Checking WCDMA Block ....................................................................31

3.6 Checking GSM Block ............................................................................ 58

3.7 GPS Trouble Shooting ......................................................................... 65

3.8 WIFI/BT Trouble Shooting .................................................................. 70

3.9 Audio Trouble ......................................................................................... 75

3.10 Camera ....................................................................................................88

3.11 Main LCD Trouble Shooting ...........................................................93

3.12 Touch troubleshooting .....................................................................96

3.13 Vibrator Trouble Shooting ...............................................................99

3.14 Gyro/Accel Trouble Shooting .......................................................101

3.15 Compass sensor troubleshooting ..............................................103

3.16 Proximity Sensor troubleshooting.............................................105

3.17 Power ON Troubleshooting ..........................................................107

3.18 FM Trouble Shooting .......................................................................111

3.19 USB Trouble Shooting ....................................................................116

4. DOWNLOAD .......................................................................120

5. BLOCK DIAGRAM ...............................................................137

6. CIRCUIT DIAGRAM ............................................................146

7. BGA PIN MAP ....................................................................162

8. PCB LAYOUT .......................................................................169

9. CALIBRATION .....................................................................173

10. HIDDEN MENU .................................................................192

11. DISASSEMBLE GUIDE ......................................................199

12. EXPLODED VIEW & REPLACEMENT PART LIST .............204

LGE Internal Use Only

- 2 -

Only for training and service purposes

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.

1. INTRODUCTION

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.

LGE Internal Use Only

- 3 -

Only for training and service purposes

1. INTRODUCTION

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.

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.

LGE Internal Use Only

- 4 -

Only for training and service purposes

2. PERFORMANCE

2.1 Product Name

LG- D410 : WCDMA900/1900/2100+EGSM/GSM850/DCS1800/PCS1900(HSPA + / GPRS Class 12 / EDGE Class 12)

2.2 Supporting Standard

2.1 Product Name

LG- D410 : WCDMA900/1900/2100+EGSM/GSM850/DCS1800/PCS1900(HSPA + / GPRS Class 12 / EDGE Class 12)

2.2 Supporting Standard

Item Feature Comment

Supporting Standard WCDMA(FDD1,2,8)/

EGSM/GSM850/DCS1800/PCS1900

Frequency Range WCDMA(FDD1) TX: 1920 – 1980 MHz

WCDMA(FDD1) RX: 2110 – 2170 MHz

WCDMA(FDD2) TX: 1850– 1910 MHz

WCDMA(FDD2) RX: 1930 – 1990 MHz

WCDMA(FDD8) TX: 880–915 MHz

WCDMA(FDD8) RX: 925 – 960 MHz

EGSM TX : 880 – 915 MHz

EGSM RX : 925 – 960 MHz

GSM850 TX : 824 – 849 MHz

GSM850 RX : 869 – 894 MHz

DCS1800 TX : 1710 – 1785 MHz

DCS1800 RX : 1805 – 1880 MHz

PCS1900 TX : 1850 – 1910 MHz

PCS1900 RX : 1930 – 1990 MHz

Application Standard WAP 2.0

2.3 Main Parts : GSM Solution

2. PERFORMANCE

2.1 Product Name

LG- D405 : WCDMA900/1900/2100+EGSM/GSM850/DCS1800/PCS1900(HSPA + / GPRS Class 12 / EDGE Class 12)

2.2 Supporting Standard

Item Feature Comment

Supporting Standard WCDMA(FDD1,2,8)/

Frequency Range WCDMA(FDD1) TX: 1920 – 1980 MHz

Application Standard WAP 2.0

EGSM/GSM850/DCS1800/PCS1900

WCDMA(FDD1) RX: 2110 – 2170 MHz

WCDMA(FDD2) TX: 1850– 1910 MHz

WCDMA(FDD2) RX: 1930 – 1990 MHz

WCDMA(FDD8) TX: 880–915 MHz

WCDMA(FDD8) RX: 925 – 960 MHz

EGSM TX : 880 – 915 MHz

EGSM RX : 925 – 960 MHz

GSM850 TX : 824 – 849 MHz

GSM850 RX : 869 – 894 MHz

DCS1800 TX : 1710 – 1785 MHz

DCS1800 RX : 1805 – 1880 MHz

PCS1900 TX : 1850 – 1910 MHz

PCS1900 RX : 1930 – 1990 MHz

2.3 Main Parts : GSM Solution

LGE Internal Use Only

Item Part Name Comment

Digital Baseband

Analog Baseband MSM8226 : Qualcomm

RF Chip WTR2605 : Qualcomm

MSM8226: Qualcomm

- 5 -

Only for training and service purposes

2.4HW Features

2.4 HW Features

Item Part Name Comment

2. PERFORMANCE

Form Factor DOP type

Battery 1) Capacity

Size Standard :131.55 x 66.02 x 9.6

Weight 124g With Battery

PCB 10Any Layers , 0.8t

Charging time 4.3hrs @ Power Off / 2540mAh

RX sensitivity WCDMA(FDD1) : -106.7dBm

TX

WCDMA/

Standard : Li-Ion, 2540mAh

2) Packing Type : Changeable

WCDMA(FDD2) : -106.7dBm

WCDMA(FDD8) : -103.7dBm

EGSM : -105dBm

GSM850 : -105dBm

DCS 1800 : -105dBm

PCS 1900 : -105dBm

WCDMA : 24dBm/3.84MHz,+1/-3dBm

Class3(WCDMA)

output

power

GPRS compatibility GPRS Class 33

EDGE compatibility EDGE Class 33

SIM card type Plug-In SIM

Built-in Camera 8M AF / VGA VT

Status Indicator N/A

GSM/

GPRS

EDGE GSM850 : 27dBm

Display Main LCD(qHD)

EGSM : 33 dBm

GSM850 : 33dBm

DCS 1800 : 30dBm

PCS 1900 : 30dBm

GSM 900 : 27 dBm

DCS 1800 : 26 dBm

PCS 1900 : 26 dBm

3V /1.8V

TFT Main LCD(4. 7”,960 x 540)

Class4 (EGSM)

Class4 (GSM850)

Class1 (PCS)

Class1 (DCS)

E2 (GSM900)

E2 (PCS)

E2 (DCS)

LGE Internal Use Only

- 6 -

Only for training and service purposes

2. PERFORMANCE

Keypad Function Key : 3

Side Key : 2

Function Key:

Home,Back,

menu

Side Key : Volume key,

power key

ANT Main : Internal Fixed Type

System connector 5 Pin micro USB

Ear Phone Jack 3.5Phi, 4 Pole, Stereo

PC synchronization Yes

Memory eMMC : 8GByte

SDRAM : 1GByte

Speech coding FR, EFR, HR,AMR

Data & Fax Built in Data & Fax support

Vibrator Built in Vibrator

BlueTooth V4.0

MIDI(for Buzzer

128 Poly

Function)

Music Player MP3,AAC,(e)AAC+,WMA,RA,WAV

Video Player Playback : 30fps 1080p (H.264/263, MPEG4/2,

WMV9, VC1, VP8, DivX, XVID)

Recording : 30fps 1080p (H.264/263, MPEG4/8)

30fps 720p (Wi-Fi display)

Camcorder MPEG4/8

Voice Recording Yes

Speaker Phone mode

Yes

Support

Travel Adapter Yes In-box item

CDROM No

Stereo Headset Yes In-box item

Data Cable Yes In-box item

T-Flash(External

No

Memory)

LGE Internal Use Only

- 7 -

Only for training and service purposes

Specification

2. PERFORMANCE

Stand by current

(Sleep & Idle Avg.)

Talk current

GSM WCDMA

Under 4.5mA@ P.P 5 Under 4.5mA @ DRX 7

Under 600mA

Under 400 mA

@GSM Level 5

@ Max Power Avg.

Under 400 mA

@ Tx10dBm Avg.

LGE Internal Use Only

- 8 -

Only for training and service purposes

2.5 SW Features

Item Feature Comment

2. PERFORMANCE

Time / Date Display Yes

Quick Access Mode Phone / Messaging / Email/ Camera

RSSI 0 ~ 5 Levels

Battery Charging 0 ~ 20 Levels

Key Volume 0 ~ 7 Level

Audio Volume 1 ~ 15 Level

Multi-Language Yes English/Spanish/French/Korean/Chi

PC Sync No

Speed Dial Yes Voice mail -> 1 key

Profile Yes not same with feature phone setting

CLIP / CLIR Yes

Phone Book Name/Number/Cose save

mode/Email/Address/

Groups/Ringtone/Organization/IM/

Notes/Nickname/

nese, etc…

There is no limitation on the number

of items.

It depends on available memory

amount.

website/Events

Last Dial Number Yes

Last ReceivedNumber Yes

Last Missed Number Yes

Search by

Number/Name

Group Yes

Fixed Dial Number Yes

Service Dial Number Yes

Own Number Yes

Voice Memo Yes

Call Reminder No

Network Selection Automatic

Yes

LGE Internal Use Only

- 9 -

Only for training and service purposes

Mute Yes

Call Divert Yes

Call Barring No

Call Charge (AoC) No

Call Duration No

2. PERFORMANCE

SMS (EMS) There is no limitation on the number

EMS is not supported.

of items.

It depends on available memory

amount.

SMS Over GPRS Yes

EMS Melody / Picture

No

Send / Receive / Save

MMS MPEG4

Yes

Send /Receive / Save

Long Message Yes

Cell Broadcast Yes

Download Yes

Game Yes

Calendar Yes

Memo No

World Clock Yes

Unit Convert No

Stop Watch Yes

Wall Paper Yes

WAP Browser Yes WAP stack and wml are not

supported.

Download Melody /

Yes Over web browser or Google Play

Wallpaper

SIM Lock No

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

MMS Yes

EONS Yes

CPHS Yes

ENS No

LGE Internal Use Only

- 10 -

Only for training and service purposes

2. PERFORMANCE

Camera Yes Main : 8M AF

VT : VGA

JAVA No Android don’t support JAVA

Voice Dial No

IrDa Yes

Bluetooth Yes Ver. 4.0

FM radio Yes

GPRS Yes Class 12

EDGE Yes Class 12

Hold / Retrieve Yes

Conference Call Yes Max. 7

DTMF Yes

Memo pad No

TTY No

AMR Yes Both NB and WB

SyncML No

IM Yes Hangouts

Email Yes

LGE Internal Use Only

- 11 -

Only for training and service purposes

2.6 HW SPEC.

1) GSM transceiverspecification

2.6 HW SPEC.

1) GSM transceiverspecication

2. PERFORMANCE

EMC(Radiated Spurious Emission

Transmitter Output power and Burst

Spectrum due to modulation out to

less than 1800kHz offset

Spectrum due to modulation out to

Item Specification

Phase Error Rms : 5°/ Peak : 20 °

Frequency Error

Disturbance)

Timing

Burst Timing <3.69us

GSM : 0.1 ppm

DCS/PCS : 0.1 ppm

GSM/DCS : < -28dBm

GSM : 5dBm – 33dBm ± 2dB

DCS/PCS : 0dBm – 30dBm ± 2dB

200kHz : -36dBm

600kHz : -51dBm/-56dBm

GSM :

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 :

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

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

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

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

± 800kHz, ± 1600kHz

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

-98dBm/-96dBm (2.439%)

LGE Internal Use Only

- 12 -

Only for training and service purposes

2) WCDMA transmitter specification

2) WCDMA transmitter specication

Item Specification

Transmit Frequency Band1 : 1920 MHz ~ 1980 MHz

2. PERFORMANCE

Band2 : 1850 MHz ~ 1910 MHz

Band8 :880MHz ~ 915MHz

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

Frequency Error within ±0.1 PPM

Open Loop Power Control Normal Conditions : within ±9 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)

Spurious Emissions

|f-fc| > 12.5 MHz

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

< -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 @ 880 MHz ≤ f ≤ 915 MHz

< -60 dBm / 3.84 MHz RW @ 1920 MHz ≤ f ≤ 1980 MHz

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

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

Peak Code Domain Error

LGE Internal Use Only

< -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

when Interference CW Signal Level = -40 dBc

< -15 dB at Pout  -20 dBm

- 13 -

Only for training and service purposes

3) WCDMA receiver specification

3) WCDMA receiver specication

Item Specification

2. PERFORMANCE

Band1 : 2110 MHz ~ 2170 MHz

Receive Frequency

Reference Sensitivity Level

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

Adjacent Channel Selectivity

(ACS)

Blocking Characteristic

Spurious Response

Band2 : 1930 MHz ~ 1990 MHz

Band8 :925MHz ~ 960MHz

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 = -92.7 dBm / 3.84 MHz

&Ioac = –52 dBm / 3.84 MHz @ ±5 MHz

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

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

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

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

&Iblocking = -44 dBm

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

Intermodulation

Spurious Emissions

Inner Loop Power Control

In Uplink

LGE Internal Use Only

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

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

< -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

- 14 -

Only for training and service purposes

4) HSDPA transmitter specication

4) HSDPA transmitter specification

T

Item Specification

2. PERFORMANCE

Band1 : 1920 MHz ~ 1980 MHz

Transmit Frequency

Maximum Output Power

HS-DPCCH

Band2 : 1850 MHz ~ 1910 MHz

Band8 : 880MHz ~ 915MHz

Sub-

est

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

Sub-

test in

table

C.10.1.4

5

Power

step

1

Power step

slot boundary

Start of

Ack/Nack

2 Start of CQI 1 +/- 0.6

Power

step

size, P

Transmitter power step tolerance [dB]

[dB]

6 +/- 2.3

3 Middle of CQI 0 +/- 0.6

4 End of CQI 5 +/- 2.3

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

Spectrum Emission Mask

Frequency offset

from carrier ᇞf

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

Minimum requirement

3.5 ~ 7.5 MHz -35-1×(ᇞf-3.5)dBc 1 MHz

7.5 ~ 8.5 MHz -35-10×(ᇞf-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

LGE Internal Use Only

- 15 -

Measurement

Bandwidth

Only for training and service purposes

5) HSDPA receiver specication

5) HSDPA receiver specification

Item Specification

Receive Frequency Band1 : 2110 MHz ~ 2170 MHz

2. PERFORMANCE

Band2 : 1930 MHz ~ 1990 MHz

Band8 : 925 MHz ~ 960MHz

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

LGE Internal Use Only

- 16 -

Only for training and service purposes

6) WLAN 802.11b transceiver specification

T

6) WLAN 802.11b transceiver specication

Item Specification

2. PERFORMANCE

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

x Power Level ≤ 20dBm under

Frequency Tolerance within ±25 PPM

Chip clock Frequency

Tolerance

Spectrum Mask

Power ramp on/off time ≤ 2us

Carrier Suppression ≥ 15dB

Modulation Accuracy

(Peak EVM)

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

within ±25 PPM

≤ -50 @ f < fc-22MHz and f > fc+22MHz

≤ 35%

Spurious Emissions

Rx Min input Sensitivity

Rx Max input Sensitivity

Rx Adjacent Channel

Rejection

< -36 dBm @ 30MHz ~ 1GHz

< -30 dBm above @ 1GHz ~ 12.75GHz

< -47 dBm @ 1.8GHz ~ 1.9GHz

< -47 dBm @ 5.15GHz ~ 5.3GHz

≤ -80 dBm (2Mbps DQPSK) @ FER ≤ 8%

≤ -76 dBm (11Mbps CCK) @ FER ≤ 8%

≤ -4 dBm (2Mbps DQPSK) @ FER ≤ 8%

≤ -10 dBm (11Mbps CCK) @ FER ≤ 8%

≥ 35dB @FER ≤ 8%,

interference input signal -70dBm@fc±30MHz(2Mbps DQPSK)

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

LGE Internal Use Only

- 17 -

Only for training and service purposes

7) WLAN 802.11g transceiver specification

7) 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

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

Rx Min input Sensitivity

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

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

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

PER ≤ 10%,

≥ 16dB@6Mbps, ≥ 15dB@9Mbps, ≥ 13dB@12Mbps,

Rx Adjacent Channel

Rejection

LGE Internal Use Only

≥ 11dB@18Mbps, ≥ 8dB@24Mbps, ≥ 4dB@36Mbps,

≥ 0dB@48Mbps, ≥ -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

- 18 -

Only for training and service purposes

8) WLAN 802.11n transceiver specication

8) WLAN 802.11n transceiver specification

Item Specification

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

Tx Power Level ≤ 20dBm

Frequency Tolerance within ±25 PPM

Chip clock Frequency

Tolerance

2. PERFORMANCE

within ±25 PPM

≤ -20 @ ±11MHz offset (9Mhz ~ 11MHz)

Spectrum Mask

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

Transmitter constellation error

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

(rms EVM)

Spurious Emissions

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

Rx Min input Sensitivity

Rx Max input Sensitivity ≥ -20dBm (6.5,13,19.5,26,39,52,58.5,65Mbps) @ PER ≤ 10%

≤ -28 @ ±20MHz offset (11MHz ~ 20Mhz)

≤ -45 @ ±30MHz offset (20MHz ~ 30Mhz)

≤ -22dB @ 58.5Mbps, ≤ -28dB @ 65Mbps

< -36 dBm @ 30MHz ~ 1GHz

< -30 dBm above @ 1GHz ~ 12.75GHz

< -47 dBm @ 1.8GHz ~ 1.9GHz

< -47 dBm @ 5.15GHz ~ 5.3GHz

PER ≤ 10%

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

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

Rx Adjacent Channel

Rejection

LGE Internal Use Only

PER ≤ 10%,

≥ 16dB@6.5Mbps, ≥ 13dB@13Mbps, ≥ 11dB@19.5Mbps,

≥ 8dB@26Mbps, ≥ 4dB@39Mbps, ≥ 0dB@52Mbps,

≥ -1dB@58.5Mbps, ≥ -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

- 19 -

Only for training and service purposes

9) GPS receiver specification

9) GPS receiver specication

Item Specification

Receive Frequency 1574.42 MHz ~ 1576.42 MHz

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

Item Specification

Receive Frequency 1574.42 MHz ~ 1576.42 MHz

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

10) Signal Bar

2. PERFORMANCE

Specification(dBm)

Antenna BAR

WCDMA(RSCP) GSM(RSSI)

54 -89±2 -91±2 43 -94±2 -96±2 32 -100±2 -99±2 21 -104±2 -103±2 10 -110±2 -105±2

Comment

1. Call

Connected &

CPIPH

Level=-3.3

LGE Internal Use Only

- 20 -

Only for training and service purposes

3. TROUBLE SHOOTING

3.1 RF Component

3. TROUBLE SHOOTING

U1100

FL1100

U1601

FL1600

FL1603

FL1602

U1602

FL1101

U1500

LGE Internal Use Only

- 21 -

Only for training and service purposes

3. TROUBLE SHOOTING

SW101

RF component

Reference Description Reference Description

U1100 FEM + GSM PAM U1101 Front-End module

U1500 WTR2605 U1600 WCDMA B1 PAM

U1602 WCDMA B2/B5 Dual PAM U1603 WCDMA B1 LNA

U1604 WCDMA B2 LNA FL1100 DCS/PCS Dual Saw Filter

FL1101 GSM 850 Rx SAW Filter FL1600 WCDMA B1 Duplexer

FL1601 WCDMA B5 Duplexer FL1602 WCDMA B2 Duplexer

FL1603 WCDMA B1 TX SAW SW101 MOBILE S/W

LGE Internal Use Only

- 22 -

Only for training and service purposes

3.2 SIGNAL PATH

3. TROUBLE SHOOTING

LGE Internal Use Only

WCDMA B1, B8 and B2 TX Signal PATH

1. WCDMA B1 TX PATH

2. WCDMA B8 TX PATH

3. WCDMA B2 TX PATH

- 23 -

Only for training and service purposes

3. TROUBLE SHOOTING

LGE Internal Use Only

WCDMA B1, B2 and B8 RX Signal PATH

1. WCDMA B1 RX PATH

2. WCDMA B8 RX PATH

3. WCDMA B2 RX PATH

- 24 -

Only for training and service purposes

3. TROUBLE SHOOTING

LGE Internal Use Only

GSM850/GSM900/DCS1800/PCS1900 RX/TX Signal PATH

1. GSM900 RX PATH

2. GSM850 RX PATH

3. GSM1900 RX PATH

4. GSM1800 RX PATH

5.GSM COMMON TX PATH

- 25 -

Only for training and service purposes

3. TROUBLE SHOOTING

3.3 Checking XO Block

The output frequency (19.2MHz) of XO (X4100) is used as the reference one of WTR2605 and PM8226 internal VCO.

TP2

TP1

LGE Internal Use Only

- 26 -

Only for training and service purposes

Schematic of the Crystal Part (19.2MHz)

85

VREG_L12_1V8

100KR4106

TP1

BB_CLK has special layout and component requirements.

C4100 1n

VREF_BAT_THERM

VREF_LPDDR2

TOL=0.01

Please refer to 80-NC833-14 for more information.

PMIC_SPMI_CLK PMIC_SPMI_DATA

X4100

1RAA19200AAA

SENSOR XTAL2

XTAL1 GND1

19.2MHz

(07/01)

3. TROUBLE SHOOTING

CBL_PWR_N

102

PM_KYPD_PWR_N

JTAG_PS_HOLD

MSM_PS_HOLD

MSM_RESIN_N

34

21

R4104 10K

0R4105

TP4103

R4107 0

0R4108

RevB

QCT Ref.J (11/5)

33p

DNI

C4101

Rev1,0) ESD

DNI

C4102

C4195

DNIC4196

BB_CLK_EN

WTR0_XO_IN

XO_G_TCXO

BB_CLK

NFC_CLK_OUT

SLEEP_CLK

TP2

R4110 0

R4112 0

0R4114

(05/30)QCT Ref.checklist

0.1uC4106

KPD_PWR_N

108

OPT_2

119

OPT_1

100

PS_HOLD

101

RESIN_IN

77

PON_RESET_N

112

SPMI_CLK

123

SPMI_DATA

120

XO_THERM

63

GND_XOADC

5

XTAL_19M_IN

6

XTAL_19M_OUT

62

GND_XO_BUFF

17

GND_XO

44

BB_CLK1_EN

13

RF_CLK1

39

RF_CLK2

31

BB_CLK1

42

BB_CLK2

88

SLEEP_CLK1

169

VREF_BAT_THM

61

VREF_LPDDR

129

REF_BYP

117

GND_REF

U4100

PM8226

LGE Internal Use Only

Check TP1

(VREG_XO)

1.9V ≥ VREG_XO ≥ 1.7V

Yes

Check TP2 (19.2 MHz)

19.2 MHz Signal

Yes

XO OK

No

- 27 -

Check PM8226

Check soldering and

components

Only for training and service purposes

3.4 Checking FEMID (GSM, W B1/B2/B8) Block

3. TROUBLE SHOOTING

TP3

TP4

TP5

TP2

TP1

TP9

TP6

TP8

TP7

LGE Internal Use Only

- 28 -

Only for training and service purposes

3. TROUBLE SHOOTING

WTR_TX1_OUT

+VPA_BATT0

TX_MODULE_TRX_1

TX_MODULE_TRX_2

TX_MODULE_TRX_4

C1145 3.9p

8.2nL1128

8.2nL1129

RX_G1800

RX_G1900

18

202119

15

14

161713

RX1

RX2

GND15

SPDT_OUT

22

GND16

23

TRX1

24

GND17

25

TRX2

26

27

28

29

30

31

DNIC1120

DNIC1121

32

33

TP3

TP8

SPDT_SEL

ANT0_SW_SEL_0 ANT0_SW_SEL_1 ANT0_SW_SEL_2

22pC1109

TP1

C1119 DNI

C1110

4.7u

for W7 CI (06/07)

GND18 TRX3 GND19 TRX4 GND20 VBATT NC1

SKY77573-31

SPDT

NC2

34

TP4

TP2

GND14

SPDT_IN

EAT62073401

U1100

RF_IN

SW1

SW0

ANT

GND13

HB_EN

LB_EN

GND12

MODE0

GND11

GND10

PGND

MODE1

DNIC1115

GND9 GND8 GND7 GND6 GND5 GND4 VCC2 VCC1 GND3 GND2 GND1

434241403937383536

C1116 DNI

TP5

12

11

10

9

8

7

6

5

4

3

2

1

TP6

C1117 DNI

DNIC1118

L1138 2n

TP9

100p

C1112

TP7

2nL1139

C1113 10u

C1114 0.1u

DNIL1105

L1106 DNI

PA0_R_1 PA0_R_0

ANT0_SW_SEL_3

Schematic of the Antenna Switch Block

+VPA_BATT0

LGE Internal Use Only

Check TP1~7 (High Level)

1.4V < Voltage < 3.0V

Yes

Check the ANT Logic in each mode

No

- 29 -

Check the TP8,9

Only for training and service purposes

TXM LOGIC(SPDT OFF)

3. TROUBLE SHOOTING

TP1

Band SPDT_SEL

LB_HPM G850/900 TX L L H L L L L

LB_MPM G850/900 TX L L H L L L H

LB_LPM G850/900 TX L L H L L H L

LB_ULPM G850/900 TX L L H L L H H

HB_HPM G1800/1900 TX L H L L L L L

HB_MPM G1800/1900 TX L H L L L L H

HB_LPM G1800/1900 TX L H L L L H L

HB_ULPM G1800/1900 TX L H L L L H H

TRX1 W B1/B4 TRX H L L L L - -

TP2

ANT0_SW_

SEL0

TP3

ANT0_

SW_SEL1

TP4 TP5

ANT0_

SW_SEL2

SW_SEL3

ANT0_

TP6 TP7

PA0_R0 PA0_R1

TRX2 W B2 TRX H L L H L - -

TRX3 G900/850 RX H L H L L - -

WB5/B8

TRX4

RX1 G1900 RX H H H H L - -

RX2 G1800 RX H H H H H - -

TRX,G850/900

RX

H L H H L - -

LGE Internal Use Only

- 30 -

Only for training and service purposes