Lg H990ds User manual

Internal Use Only

MOBILE PHONE

SERVICE MANUAL

CAUTION

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

Date: Oct. 2016 / Issue 1.0

MODEL : LG-H990ds

(VIETMOBILE.VN)

reserved. 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..........................................12

3.1 Checking XO Block

3.2 Transceiver DC Power Supply Circuit

3.3 DC-DC Block

3.4 FEMiD Block

3.5 LTE PART

3.6 WCDMA PART

3.7 GSM PART

3.8 BT/WiFi PART

3.9 GPS PART

3.10 NFC PART

3.11 Power

3.12 Charger

3.13 Audio

3.14 Display

3.15 Camera

3.16 Sensor

3.17 Motor

3.18 Hall IC

3.19 USB

3.20 SIM Card interface trouble

4. BLOCK DIAGRAM…........................................... 94

5. CIRCUIT DIAGRAM............................................. 107

6. BGA PIN MAP.................................................................. 140

7. PCB LAYOUT…............................................................... 143

8. HIDDEN MENU................................................................... 149

9. DOWNLOAD….................................................................. 153

10. CALIBRATION................................................................ 154

11. DISASSEMBLE GUIDE.................................................. 155

12. EXPLODED VIEW………………………………………….. 159

13. REPLACEMENT PART LIST..……………………………. 160

reserved. 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.

reserved. Only training and service purposes

LGE Internal Use Only

2. PERFORMANCE

2.1 Band Specification

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

EGSM 880 – 915 925 – 960

GSM850 824 – 849 869 – 894

DCS1800 1710 – 1785 1805 – 1880

PCS1900 1850 – 1910 1930 – 1990

WCDMA(FDD1) 1920 – 1980 2110 – 2170

WCDMA(FDD2) 1850 – 1910 1930 – 1990

WCDMA(FDD3) 1710 – 1785 1805 – 1880

WCDMA(FDD4) 1710 – 1755 2110 – 2155

WCDMA(FDD5) 824 – 849 869 – 894

WCDMA(FDD8) 880 – 915 925 – 960

TD-SCDMA(B34)

2010~2025 2010~2025

TD-SCDMA(B39)

1880~1920 1880~1920

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

LTE1 1920 – 1980 2110 – 2170

LTE2 1850 – 1910 1930 – 1990

LTE3 1710 – 1785 1805 – 1880

LTE4 1710 – 1755 2110 – 2155

LTE5 824 – 849 869 – 894

LTE7 2500 – 2570 2620 – 2690

LTE8 880 – 915 925 – 960

LTE12 699 – 716 729 – 746

LTE17 704 – 716 734 – 746

LTE20 832 – 862 791 - 821

LTE26 814 – 849 859 – 894

LTE28 703 – 748 758 – 803

LTE38 2570 – 2620 2570 – 2620

LTE39 1880~1920 1880~1920

LTE40 2300 – 2400 2300 – 2400

LTE41 2496 – 2690 2496 – 2690

reserved. Only training and service purposes

LGE Internal Use Only

2. PERFORMANCE

2.2 HW Features

항목Type / Spec.

1. Phone Type DOP

2. Size 159.7mm x 78.1mm x 7.7mm

3. Weight 174g ( with Battery )

4. Battery 3200mAh(Typ) 3.85V, (Li-ion)

5. MSM Chipset MSN8996 2.15GHz Quad core

6. Memory 64GB(UFS) + 4GB(LPDDR4)

External Memory(SD Card) : Up to 2TB

7. LCD 5.7" (2560x1440) , 16.7M Colors, TFT

8. Main Camera 16MP@30fps/8MP@30fps wide angle+ 5MP@30fps wide angle

9. Audio 14 X 14 X 3.3T Speaker

10. Bluetooth Bluetooth 4.2 BLE

11. WLAN 2.4GHz IEEE 802.11 b/g/n/ac , 5GHz IEEE 802.11 a/n/ac

12. LTE 3GPP 36.101

reserved. Only training and service purposes

LGE Internal Use Only

2. PERFORMANCE

2.3 RSSI Display

RSSI BAR GSM RSSI

WCDMA/

TD-SCDMA

RSSI

LTE RSSI Comment

BAR 5->4 - 90dBm±3dB - 87dBm±4dB -85dBm ±4dB

1. Call Connect

ed & CPIPH Le

vel=-3.3

BAR 4->3 - 95dBm±3dB - 92dBm±4dB -95dBm ±4dB

BAR 3->2 - 98dBm±3dB - 98dBm±4dB -105dBm ±4dB

BAR 2->1 - 102dBm±3dB - 102dBm±4dB -115dBm ±4dB

BAR 1->0 - 104dBm±3dB - 108dBm±4dB -128dBm ±4dB

Measure RSSI after 10 seconds when you change power.

For GSM, Operating Mode -> GPRS

MS_TXPWR_MAX_CCH -> 5 / Maximum Uplink Transmit Power Level -> 33dBm

For WCDMA/TD-SCDMA, Uplink Parameters.

After Maximum Uplink Transmit Power Level set to max power,(24dBm)

progress the measurement

reserved. Only training and service purposes

LGE Internal Use Only

2. PERFORMANCE

2.4 Current consumption

Specification

GSM WCDMA/

TD-SCDMA LTE

1. Sleep Mode

(Sleep & Idle Avg)30mA↓@ P.P 5 30mA↓@ DRX 7 30mA↓@ 2.56s

2. Standby

(With Earjack) 32.5mA↓@ P.P 5 32.5mA↓@ DRX 7 32.5mA↓@ 2.56s

3. Standby

(BT Connected) 33.5mA↓33.5mA↓33.5mA↓

4. Talk Mode -GSM LVL5 : 400mA↓@ Avg

-Max Pwr :

870mA↓@Avg

-Tx 10dBm :

270 mA↓@ Avg

-Max Pwr(LCD Off)

870mA↓@Avg

-Tx 10dBm(LCD Off)

370mA↓@ Avg

5. No SVC Mode 220mA↓220mA↓220mA↓

6. Power Off Mode 700uA↓700uA↓700uA↓

reserved. Only training and service purposes

LGE Internal Use Only

2. PERFORMANCE

2.5 Battery bar

Battery Bar Specification Battery Bar Specification

Bar 20(Full) Over 98% Bar 9 -> Bar 8 43% -> 42%

Bar 20 -> Bar 19 98% -> 97% Bar 8 -> Bar 7 38% -> 37%

Bar 19 -> Bar 18 93% -> 92% Bar 7 -> Bar 6 33% -> 32%

Bar 18 -> Bar 17 88% -> 87% Bar 6 -> Bar 5 28% -> 27%

Bar 17 -> Bar 16 83% -> 82% Bar 5 -> Bar 4 23% -> 22%

Bar 16 -> Bar 15 78% -> 77% Bar 4 -> Bar 3 16% -> 15%

Bar 15 -> Bar 14 73% -> 72% Bar 3 -> Bar 2 13% -> 12%

Bar 14 -> Bar 13 68% -> 67% Bar 2 -> Bar 1 8% -> 7%

Bar 13 -> Bar 12 63% -> 62% Bar 1 -> Bar 0 3% -> 2%

Bar 12 -> Bar 11 58% -> 57% Power off 2% ->1%

Bar 11 -> Bar 10 53% -> 52% Low battery pop-up 15% , 5%, 1%

Bar 10 -> Bar 9 48% -> 47%

※Cut Off Voltage : 3.3 ±0.1 V, if[SOC(%) 2% 1%], cut off.

reserved. Only training and service purposes

LGE Internal Use Only

2. PERFORMANCE

2.6 SW Specification

Item Feature Comment

RSSI 0 ~ 5 Levels

Battery Charging 0 ~ 100 Levels

Key Volume 0 ~ 15 Level

Audio Volume 0 ~ 15 Level

Time / Date Display Yes

Multi-Language Yes depending on build language

Quick Access Mode Phone / Messaging / Applications Phone / Messaging / Application

PC Sync No LG Bridge

Speed Dial Yes Voice mail center -> 1 key

Profile Yes not same with feature phone s

etting

CLIP / CLIR Yes

Phone Book Name / Number / Email / Groups /

Postal addresses / Organizations / I

M / Note / Nickname / Website / Ev

ent /

There is no limitation on the n

umber of items.

It depends on available memor

y amount.

Last Dial Number Yes

Last Received Number Yes

Last Missed Number Yes

Search by Number/Na

Yes

Group Yes There is no limitation on the n

umber of items.

It depends on available memor

y amount.

Fixed Dial Number Yes

Service Dial Number No It depends on operator

requirements.

(OCT. 2016 : RGS, TCL, BELL,

VIV, USC(MX), VDF, ORG SCA)

Own Number Yes My Profile (add/edit/delete are

supported)

reserved. Only training and service purposes

LGE Internal Use Only

2. PERFORMANCE

2.6 SW Specification

Voice Memo Yes Support the HD Audio Recorder

Call Reminder No

Network Selection Automatic

Mute Yes

Call Divert Yes

Call Barring Yes

Call Charge (AoC)No

Call Duration Yes

SMS (EMS) There is no limitation on the number of items

It depends on available memory amount.

EMS does not support.

SMS Over GPRS No Supported bearer : CS only

EMS Melody / Picture

Send / Receive / Save

No EMS does not supported.

MMS MPEG4

Send / Receive / Save

Yes Send / Receive : Yes

Save : depends on content ty

Support video content type

list

1. video/mp4

2. video/h263

3. video/3gpp2

video/3gpp

Long Message MAX 2000 characters The standard of Open vender

Cell Broadcast Yes It depends on country.

CB app supports Cell Broadcast mes

sage

Download Over the Web

Game No

Calendar Yes

Memo Ye s There is no limitation on the number o

f items.

It depends on available memory amo

unt.

World Clock Yes

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