LG LM-X120HM Manual de usuario

MODEL : LM-X120HM

Internal Use Only

MOBILE PHONE

SERVICE MANUAL

CAUTION

BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS” IN THIS MANUAL

Date: June 2019 / Issue 1.0

Only training and service purposes

LGE Internal Use Only

Table Of Contents

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

1.1 Purpose

1.2 Regulatory Information

2. PERFORMANCE................................................... 4

2.1 Band Specification

2.2 HW Features

2.3 RSSI Display

2.4 Current consumption

2.5 Battery bar

2.6 SW Specification

3. TROUBLE SHOOTING..........................................17

3.1 Checking XO Block

3.2 Checking Transceiver DC Power Supply Circuit Block

3.3 Checking DC-DC Block

3.4 ASM Block

3.5 GSM, WCDMA, LTE PART

3.5.1 GSM RF PART

3.5.2 WCDMA PART

3.5.3 LTE PART

3.6 Power

3.7 Charger

3.8 Audio Block

3.8.1 Audio receiver

3.8.2 Audio speaker

3.8.3 Audio Main Mic

3.8.4 Audio sub Mic

3.8.5 Audio Ear mic jack

3.8.6 FM Radio

3.9 Checking LCD Block

3.10 Checking Touch Block

3.11 Checking Compass sensor Block(NO)

3.12 Checking accel & gyro Block

3.13 Checking proximity Block

3.14 Checking main camera Block

3.15 Checking front camera Block

3.16 Checking Motor Block

3.17 Checking BT/WIFI/GPS Block

4. BLOCK DIAGRAM…..................................................... 58

5. CIRCUIT DIAGRAM...................................................... 70

6. BGA PIN MAP............................................................ 71

7. PCB LAYOUT…........................................................... 72

8. MEMORY VARIATION.............................................. 76

9. HIDDEN MENU.......................................................... 77

10. DOWNLOAD…............................................................ 80

11. CALIBRATION............................................................ 81

12. DISASSEMBLE GUIDE............................................... 82

13. EXPLODED VIEW………………………………………... 89

14. REPLACEMENT PART LIST..…………………………. 90

Only training and service purposes

LGE Internal Use Only

1. INTRODUCTION

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

This material is prohibited to share and release to unauthorized person, in accordance with the regulations, LG Electronics, Civil / criminal

responsibility in accordance with the relevant provisions violate.

B. Precautions for repair

•In case of Disassembly or Assembly to repair product, be careful of a product failure caused by RF signals and Static electricity.

•When using Magnetic tool for the Phone's SVC repair, you should check affect the Electric parts according to effect of Magnet.

•When fastening the screw, be careful not to damage the head of screw and even product.

C. Attention

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

Following information is ESD handling:

•Service personal should ground themselves by using a wrist, strap when exchange system board.

•When repair 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 board or parts like EEPROM to the Factory, use the protective package as described.

Only training and service purposes

LGE Internal Use Only

2. PERFORMANCE

2.1 Band Specification

Support Band TX Freq (MHz) RX Freq (MHz)

WCDMA(FDD1) 1922 – 1978 2112 – 2167

WCDMA(FDD2) 1852 – 1908 1932 – 1988

WCDMA(FDD4) 1712 – 1753 2112-2153

WCDMA(FDD5) 826 – 847 871 – 892

WCDMA(FDD8) 882 – 913 927 – 958

EGSM 880 – 915 925 – 960

GSM850 824 – 849 869 – 894

DCS1800 1710 – 1785 1805 – 1880

PCS1900 1850 – 1910 1930 – 1990

LTE1 1920 – 1980 2110 – 2170

LTE2 1850 – 1910 1930 – 1990

LTE3 1710 – 1785 1805 – 1880

LTE4 1710 – 1755 2110 – 2155

LTE5 1920 – 1980 2110 – 2170

LTE7 2500 – 2570 2620 – 2690

LTE8 880 – 915 925 – 960

LTE17 704 – 716 734 – 746

LTE28 703 – 748 758 – 2620

LTE66 1710 – 1780 2110 – 2180

Only training and service purposes

LGE Internal Use Only

2. PERFORMANCE

2.2 HW Features

List Type / Spec.

1. Phone Type DOP Type

2. Size 148.6mm x 71.9mm x 8.3mm

3. Weight 145 g ( with Battery )

4. Battery 3,000mAh(Typ) (Li-Ion), 2,890mAh(Min.)

5.Chipset MT6739WW (2.0GHz Ouad-core + 1.5GHz Quad-core)

6. Memory 16GB(EMMC) + 1GB(LPDDR3) External Memory(SD Card) : Up to 2TB

7. LCD Size 5.45 inch

Display Type TFT

Color 16.7M colors

Resolution 480(V) X 960(H)

8. Touch Type 5.45 inch Capacitive type

9. Main Camera (8M) Type CMOS image sensor

Resolution 3264(H) X 2448(V) pixels.

Image Scaling Down 4:3(8.0MP – 3264x2448)

Format Image : JPG, Video : MP4

Only training and service purposes

LGE Internal Use Only

2. PERFORMANCE

2.2 HW Features

10. Audio Receiver 12 X 06 X 2.0T Receiver

Speaker 15 X 11 X 2.5T Speaker

Format MP3, AAC, MIDI, EAAC+, OGG, AMR

11. Bluetooth Standard Bluetooth 4.2

Effective Distance 10M

Distance 0 m ~ 10 m (depend on environment)

12. WLAN Standard IEEE 802.11 b/g/n

Throughput Max 112Mbps

Depend on environment 0 ~ 15m (depend on environment)

13. GPS type A-GPS, Glonass

Only training and service purposes

LGE Internal Use Only

2. PERFORMANCE

2.3 RSSI Display

2.4 Current consumption

Stand by Voice Call

(LTE Data connection) Measurement Condition

Bluetooth Off Bluetooth Connected

WCDMA Only 12 mA under

(DRX=7)

15 mA under

(DRX=7)

500 mA under

(Tx=10dBm) LCD off

GSM Only 12 mA under

(PP=5)

15 mA under

(PP=5)

500 mA under

(Lvl=5) LCD off

LTE 12 mA under

(LTE 2.56S)

15 mA under

(LTE 2.56s)

500 mA under

(@TX 10 dBm)

LCD off

RSSI BAR GSM RSSI WCDMA RSSI LTE RSSI Comment

BAR 4->3 - 85dBm±5dB - 72dBm±3dB -92dBm ±6dB

1. Call Connected & CPIPH Level=-3.3

2. LTE:RSRP

BAR 3->2 - 95dBm±4dB - 80dBm±5dB -102dBm ±5dB

BAR 2->1 - 102dBm±2dB - 91dBm±5dB -113dBm ±5dB

BAR 1->0 - 106dBm±2dB - 101dBm±4dB -121dBm ±4dB

Only training and service purposes

LGE Internal Use Only

2. PERFORMANCE

2.5 Battery bar

Battery Bar icon Specification(%)

Level 20 98 ~ 100

Level 19 93 ~ 97

Level 18 88 ~ 92

Level 17 83 ~ 87

Level 16 78 ~ 82

Level 15 73 ~ 77

Level 14 68 ~ 72

Level 13 63 ~ 67

Level 12 58 ~ 62

Level 11 53 ~ 57

Level 10 48 ~ 52

Level 9 43 ~ 47

Level 8 38 ~ 42

Level 7 33 ~ 37

Level 6 28 ~ 32

Level 5 23 ~ 27

Level 4 16 ~ 22

Level 3 13 ~ 15

Level 2 8 ~ 12

Level 1 3 ~ 7

Level 0 0 ~ 2

Low Battery Pop-up 16% 15% : One Time popup (No call)

There is no pop-up until 5% if you delete pop-up.

Critical Low battery pop-up 6% 5% : One Time popup (No call)

There is no pop-up until 3% if you delete pop-up.

Power off Under 1%

Only training and service purposes

LGE Internal Use Only

2. PERFORMANCE

2.6 SW Specification

Function Detail Item O / X Specification Etc.

OS OS OAndroid P Go

Data Circuit X

Packet O

Connectivity Infrared (IrDA) X

Bluetooth OVer. 5.0

Wi-Fi O802.11 b/g/n

USB OVer. 2.0

USB Mass storage XMTP support

RS232 X

DLNA1.5 X

Voice Function Voice Recording Oapp downloading

Voice Command X

Answering machine X

Memory User Memory OTotal 16GB

OTotal User Memory 12GB (w/o MicroSD)

XMMS

OPictures (Still Image & Moving Image)

OMP3 (Music Contents)

XJava Contents

XWallpaper

XRingtone

Oexternal memory (microSD) up to 32TB

Camera

(Still Capture) Memory OMicroSD

Camera Module O8M AF

Auto Focus O

Digital Zoom O4x

Capture Resolution Orear capture :

3264x2448, 3328x1872,

3264x1632, 2560x1920,

2560x1440, 2560x1280,

2448x2448, 1840x1840

front capture :

2560x1920, 2560x1440,

2560x1280, 1920x1920,

Continuous Shot X

Quality X

Preview Image O

TV-Out X

Flash O

Only training and service purposes

LGE Internal Use Only

2. PERFORMANCE

2.6 SW Specification

Camera (Movie Capture) Movie Resolution ORear

1920x1080, 1280x720

Front

1920x1080, 1280x720

Filter X

Quality X

MPEG Visual Bit Rate XDefault code H.264

And video Bit rate is 17Mbps

We can support MPEG-4, but the bit rate is depend on Application setting

Audio Encode OAAC, , AMR-NB

Audio Decode OAMR

Movie Recode ORecode, Stop, Pause, Resume

Movie Playback OPlay, Stop, Pause

Stream Format (Mux) Omp4, 3gp mp4 – normal

3gp – mms

Stream Format (Demux) Omp4, 3gp mp4 – normal

3gp – mms

Recoding Time OReal Time Recoding

TV-Out X

Audio

Multimedia Voice Codec OAMR/ 3gpp

AAC /AAC+/ EAAC+ O

MP3, WAV O

WMA O

Midi OType 0 and 1 (.mid, .xmf, .mxmf)

RTTTL/RTX (.rtttl, .rtx)

OTA (.ota)

iMelody (.imy)

Music ringtone OMP3, AAC, AAC+, eAAC+, AMR, OGG, FLAC, ALAC, PCM, WMA, OPUS

AMR-NB O

Music player skin OMusic Player

FM Radio O

Speakerphone O

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