lg K500ds Service Manual

MOBILE PHONE

SERVICE MANUAL

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

MODEL : LG-K500ds

Internal Use Only

Date: April 2016 / Issue 1.0

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 Checking Transceiver DC Power Supply Circuit Block

3.3 Checking DC-DC Block

3.4 ASM(Antenna Switch Module) Block

3.5 GSM RF Part

3.6 WCDMA RF Part

3.7 LTE RF Part

3.8 Power

3.9 Charger

3.10 Audio Block

3.11 Checking LCD Block

3.12 Checking Touch Block

3.13 Checking accelmeter+compass sensor Block

3.14 Checking USB Block

3.15 Checking Main/VT camera Block

3.16 Connectivity RF PART

4. BLOCK DIAGRAM…........................................... 87

5. CIRCUIT DIAGRAM........................................... 96

LGE Internal Use Only

2

Table Of Contents

6. BGA PIN MAP............................................................ 118

7. PCB LAYOUT…........................................................... 119

8. HIDDEN MENU.......................................................... 127

9. DOWNLOAD…........................................................... 130

10. CALIBRATION........................................................... 131

11. DISASSEMBLE GUIDE............................................. 132

12. EXPLODED VIEW………………………………………... 134

13. REPLACEMENT PART LIST..…………………………. 135

reserved. Only training and service purposes

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

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

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

• W

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

C. At

tention

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

• 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.

LGE Internal Use Only

to repair product, be careful of a product failure caused by RF signals and Static electricity.

mat which is also grounded.

reserved. Only training and service purposes

2.1 Band Specification

4

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

LTE(FDD3) 1710 - 1785 1805 - 1880

LTE(FDD7) 2500 - 2570 2620 - 2690

LTE(FDD20) 832 - 862 791 - 821

LTE(TDD38) 2570 - 2620 2570 - 2620

WCDMA(FDD1) 1920 – 1980 2110 – 2170

WCDMA(FDD1) 1850-1910 1930-1990

WCDMA(FDD5) 824 – 849 869 – 894

WCDMA(FDD8) 880 – 915 925 – 960

GSM850 824 – 849 869 – 894

EGSM 880 – 915 925 – 960

DCS1800 1710 – 1785 1805 – 1880

PCS1900 1850 – 1910 1930 – 1990

2. PERFORMANCE

LGE Internal Use Only

reserved. Only training and service purposes

2.2 HW Features

5

List Type / Spec.

1. Phone Type DOP Type

2. Size 142.6 x 71.8 x 7.1 mm

3. Weight 120.0 g ( with Battery )

4. Battery Li-Polymer, 2300mAh

5.Chipset MSM8916 1.2GHz Quad core

6. Memory 16GB(EMMC) + 2MB(LPDDR3) External Memory(SD Card) : Up to 32GB

7. LCD Size 4.93 inch

Display Type Active matrix TFT, Transmissive Type

Color 16.7M colors

2. PERFORMANCE

8. Touch Typ e In-cell Touch

9. Main Camera (13M) Typ e CMOS image sensor

LGE Internal Use Only

Resolution HD+

Resolution 2592(H) X 1944(V) pixels.

Image Scaling Down 5M(2560x1920), W4M(2560x1536)),

3M(1920x1920), 1M(1280x960)

Format Image : JPG, Video : MP4

reserved. Only training and service purposes

2.2 HW Features

6

2. PERFORMANCE

10. Audio

11. Bluetooth Standard Bluetooth 4.1

12. WLAN Standard IEEE 802.11 b/g/n

13. GPS type A-GPS

14. FM type FM Radio, 3.5pi Ear-jack

Receiver 13 X 07 X 2.7T Receiver

Speaker 18 X 10 X 3T Speaker

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

Effective Distance 10M

Distance 0 m ~ 10 m (depend on environment)

Throughput Max 40Mbps (SDIO Driver performance)

Depend on environment 0 ~ 50m (depend on environment)

LGE Internal Use Only

reserved. Only training and service purposes

2.3 RSSI Display

7

2. PERFORMANCE

RSSI BAR

BAR 5->4

BAR 4->3

BAR 3->2

BAR 2->1

BAR 1->0

- 103dBm± 3dB - 101dBm± 3dB -113dBm ±3dB

- 105dBm± 3dB - 107dBm± 3dB -126dBm ± 3dB

2.4 Current consumption

GSM

GSM RSSI

WCDMA RSSI LTE RSSI

- 91dBm± 3dB - 86dBm± 3dB -83dBm ± 3dB

- 96dBm± 3dB - 91dBm± 3dB -93dBm ± 3dB

- 99dBm± 3dB - 97dBm± 3dB -103dBm ± 3dB

Stand by

Tal k

Bluetooth Off Bluetooth On

25 mA 30 mA Under 400 mA

(PP = 5) (PP = 5) (TX Level = Max)

Measurement Co

ndition

LCD Backlight off 370mA

Comment

1. Call Connected & C

PIPH Level=-3.3

2. LTE: RS

No SVC

Mode

RP

WCDMA

LGE Internal Use Only

LTE

Under 700 mA

25 mA

(DRX = 7)

25 mA 30 mA 350 mA

(DRX = 2.56sec) (DRX = 2.56sec) (Cat 2 Tx= 10dBm)

30 mA

(DRX = 7)

(Max PWR)

Under 250 mA

(TX = 10dBm)

LCD Backlight off 370mA

LCD Backlight off

reserved. Only training and service purposes

2.5 Battery bar

8

Battery Bar Specification Battery Bar Specification

2. PERFORMANCE

Bar 20(Full)

98% ↑

Bar 9 -> Bar 8

43% -> 42%

Bar 20 -> Bar 19

Bar 19 -> Bar 18

98% -> 97%

93% -> 92%

Bar 8 -> Bar 7

Bar 7 -> Bar 6

38% -> 37%

33% -> 32%

Bar 18 -> Bar 17

Bar 17 -> Bar 16

88% -> 87%

83% -> 82%

Bar 6 -> Bar 5

Bar 5 -> Bar 4

28% -> 27%

23% -> 22%

Bar 16 -> Bar 15

Bar 15 -> Bar 14

Bar 14 -> Bar 13

Bar 13 -> Bar 12

Bar 12 -> Bar 11

78% -> 77%

73% -> 72%

68% -> 67%

63% -> 62%

58% -> 57%

Bar 4 -> Bar 3

Bar 3 -> Bar 2

Bar 2 -> Bar 1

Bar 1 -> Bar 0

Power off

16% -> 15%

13% -> 12%

8% -> 7%

3% -> 2%

2% -> 1%

Bar 11 -> Bar 10

Bar 10 -> Bar 9

LGE Internal Use Only

53% -> 52%

48% -> 47%

Low battery pop-up

15% , 5%

reserved. Only training and service purposes

2. PERFORMANCE

[German, Spanish(Spain, Argentina, Bolivia,

), Swedish, Russian, English,

9

2.6 SW Specification

Item Feature Comment RSSI 0 ~ 5 Levels

Battery Charging 0 ~ 20 Levels

Ke y Vol ume 0 ~ 7 Level ringtone, notification, system, call volume

Audio Volume 0 ~ 15 Level music, video, games & other media

Time / Date Display Yes

Multi-Language Ye s Support total 35 languages

Chile, Colombia, Costa Rica, Dominican Re

public, Ecuador, El Salvador, Guatemala, H onduras, Mexico, Nicaragua, Panama, Para guay, Peru, Puerto Rico, Español(Estados U

nidos), Uruguay, Venezuela) , French, Italian, Dutch, Polish, Portuguese( Por tugal, Brasil

Arabic, Chinese Simlified, Korean, Japanese

Quick Access Mode Phone/Applications/Browser/Messaging

PC Sync Yes

Speed Dial Yes Voice mail center -> 1 key

Profile Yes not same with feature phone setting

CLIP / CLIR Yes

Phone Book Name / Number / Email / Groups / Postal address

es / Organizations / IM / Note / Nickname / Webs

ite / Event /

Last Dial Number Yes Call histories are displayed in chronologica

Last Received Number Yes Call histories are displayed in chronologica

Last Missed Number Yes Call histories are displayed in chronologica

Search by Number/Name Yes

There is no limitation on the number of it

It depends on available memory amount.

.]

ems.

l order

LGE Internal Use Only

Group Yes There is no limitation on the number of it

ems.

It depends on available memory amount.

Fixed Dial Number Yes

Service Dial Number Ye s

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

)

Voice Memo Yes Support voice recorder

reserved. Only training and service purposes

2.6 SW Specification

10

EMS Melody / Picture Send / Receive / Save

Send / Receive / Save

2. PERFORMANCE

Call Reminder No

Network Selection Automatic

Mute Yes

Call Divert Yes

Call Barring Yes

Call Charge (AoC) No

Call Duration Yes

SMS (EMS)

SMS Over GPRS Yes

MMS MPEG4

Long Message MAX 2000 characters The standard of Open vender

Cell Broadcast Ye s

Download Over the Web

Game No

Calendar Yes

Memo Ye s

There is no limitation on the number of items.

It depends on available memory amount.

No EMS does not support

Yes

There is no limitation on the number of i

It depends on available memory amount

EMS does not support.

tems.

.

LGE Internal Use Only

World Clock Yes

Unit Convert No

Stop Watch Yes

Wall Paper Yes

WAP Browser No

Support only web browser based on we

bkit. WAP stack and wml are not support

ed.

reserved. Only training and service purposes

2.6 SW Specification

AP, OPP, MAP, HID, PAN, HOGP, HDP

11

Download Melody /

Wallpaper

SIM Lock Yes

SIM Toolkit Ye s

Camera Ye s

Voice Dial No

Bluetooth Yes

FM radio Ye s

Hold / Retrieve Yes

Conference Call Yes Max. 6

Memo pad No

SyncML No

2. PERFORMANCE

Yes Over web browser

MMS Yes OMA MMS 1.2 version EONS Yes CPHS Yes V4.2

ENS No

13M AF / 8MP

Digital Zoom : x4

JAVA No

IrDa No

Ver. 4.0 [HSP, HFP, A2DP, AVRCP, PB

, DID]

GPRS Yes Class 12

EDGE Yes Class 12

DTMF Ye s

TTY No

AMR Yes

IM Yes Google Hangout

Email Yes IMAP/POP3/EAS

LGE Internal Use Only

reserved. Only training and service purposes

3. TROUBLE SHOOTING

12

3.1 Checking XO Block

The out put frequency(26MHz) of shared clock from PMIC(U4100) is used as the reference one of WTR4905-1

TP1

Checking Flow Image

START

Check TP1

Is it 26MHz?

NO

Replace U4100 and then

check TP1

Is it 26MHz?

NO

The Problem may be

Logic part

Refer to Logic trouble shoot

YES

Main

BOT

U1500

XO Circuit is OK.

Check next step

XO Circuit is OK.

Check next step

Circuit Diagram

LGE Internal Use Only

TP1

reserved. Only training and service purposes

3.2 Checking Transceiver DC Power Supply Circuit Block

13

The WTR4905-1 operating voltages used two voltage sources 1.22V and 2.05V

Checking Flow Image

START

Main

BOT

3. TROUBLE SHOOTING

TP1

Check TP1

+2.05V_RF is OK?

YES

Check TP2

+1.22V_RF is OK?

YES

Check next step

NO

The Problem may be Logic part

Refer to Logic trouble shoot

The Problem may be Logic part

Refer to Logic trouble shoot

Circuit Diagram

TP2

U1500

TP2

TP1

LGE Internal Use Only

reserved. Only training and service purposes

3. TROUBLE SHOOTING

14

3.3 Checking DC-DC Block

The APT, PMIC(U1400, U4100) output voltages is used as the reference one of SKY77660-21

START

Check TP1

0.5V ≤ TP2 ≤ 4.2V ?

YES

Check TP2

Is VPWR OK?

YES

Check next step

Main

Bot

Checking Flow

Damage or soldering condition

NO

Damage or soldering condition

NO

Image

U1400

Check U1400 Physical

Check U4100 Physical

Circuit Diagram

TP1

TP2

LGE Internal Use Only

TP1

TP2

reserved. Only training and service purposes

3.4 ASM(Antenna Switch Module) Block

15

Checking ANT ASM (GSM,WCDMA,LTE)

Checking Flow

3. TROUBLE SHOOTING

START

Check

TP1, TP2 High Level ?

(1.5V≤TP1 ≤2.1V) (2.5V≤TP2 ≤3.1V)

YES

Check

U1200 physical Damage

or soldering condition

OK?

Check Next step

Main

BOT

NO

NOT GOOD

Image

U1200

Circuit Diagram

The Problem may be

Logic part

Refer to Logic trouble

shoot

TP2

Replace U1200

TP1

LGE Internal Use Only

TP2

TP1

reserved. Only training and service purposes

3. TROUBLE SHOOTING

16

3.5 GSM RF PART

GSM RF Part support GSM850/900/1800/1900 with ASM, PAM, Transceiver component

Checking Flow

START

Check XO Block

Refer 3.1

Check Transceiver DC Power supply Block

Refer 3.2

Check DC-DC Block

Refer 3.3

LGE Internal Use Only

Check ASM Block

Refer 3.4

Check T/RX Block

Re-Download & Cal

Change the Board

reserved. Only training and service purposes

3. TROUBLE SHOOTING

17

3.5 GSM RF PART

3.5.1 GSM RF Part RX RF PATH

1. GSM850 RX PATH

2. GSM900 RX PATH

3. GSM1800 RX PATH

4. GSM1900 RX PATH

Main

BOT

U1500

U1200

SW1001

LGE Internal Use Only

SW1000

reserved. Only training and service purposes

3.5 GSM RF PART

18

3.5.2 Checking RF Signal RX path(SW, GSM850/900)

Checking Flow

START

3. TROUBLE SHOOTING

Image

U1200

Check TP1 Signal exist?

YES

Check TP2 Signal exist?

YES

Check next step

TP1

NO

Check SW1000

Soldering

Check U1200

Soldering

TP1

Circuit Diagram

TP2

(For GSM850)

TP2

(For GSM900)

TP2 (For GSM850)

LGE Internal Use Only

TP2 (For GSM900)

reserved. Only training and service purposes

3.5 GSM RF PART

19

3.5.3 Checking RF Signal RX path(GSM850/900)

Checking Flow Image

START

Check Component

Check TP1/2 Signal exist?

NO

YES

GSM850 – FL1200

GSM900 – Fl1201

3. TROUBLE SHOOTING

Check Transceiver

physical damage

or soldering condition

Check next step

LGE Internal Use Only

OK?

NOT GOOD

TP2

Replace U1500

Circuit Diagram

TP1

TP2 (For GMS900)

TP1 (For GMS850)

reserved. Only training and service purposes

3.5 GSM RF PART

20

3.5.4 Checking RF Signal RX path(SW, GSM1800/1900)

3. TROUBLE SHOOTING

Checking Flow

START

Check TP1 Signal exist?

YES

Check TP2 Signal exist?

YES

Check next step

TP2 (For GSM1900)

NO

Check SW1001

Soldering

Check U1200

Soldering

U1200

Circuit Diagram

TP1

Image

TP2

(For GSM1900)

TP2

(For GSM1800)

LGE Internal Use Only

TP1

TP2 (For GSM1800)

reserved. Only training and service purposes

3.5 GSM RF PART

21

3.5.5 Checking RF Signal RX path(GSM1800/1900)

Checking Flow

START

Check Component

Check TP1/2 Signal exist?

NO

YES

GSM1900 – FL1205 GSM1800 – FL1208

3. TROUBLE SHOOTING

Image

TP3

TP2 (For GMS1800)

TP1 (For GMS1900)

LGE Internal Use Only

Check TP3 Signal exist?

YES

Check Transceiver

physical damage

or soldering condition

OK?

Check next step

NO

NOT GOOD

CheckU1201Soldering

Replace U1500

Circuit Diagram

TP1

TP3

TP2

reserved. Only training and service purposes

3. TROUBLE SHOOTING

22

3.5 GSM RF PART

3.5.6 GSM RF Part TX RF PATH

1. GSM850/900 TX PATH

2. GSM1800/1900 TX PATH

Main

BOT

Main

TOP

U1400

U1200

SW1001

LGE Internal Use Only

SW1000

reserved. Only training and service purposes

3.5 GSM RF PART

23

3. TROUBLE SHOOTING

3.5.7 Checking RF Signal TX path(SW, GSM LB/HB)

Checking Flow

START

Check TP1 Signal exist?

YES

Check TP2 Signal exist?

YES

Check Soldering

NO

HB: SW1001 LB: SW1000

Check U1200

Soldering

TP1 (For GSM850/900)

U1200

TP1 (For GSM1800/1900)

Circuit Diagram

Image

U1400

TP2

(For GSM1800/1900)

(For GSM850/900)

Check Transceiver

physical damage

or soldering condition

Check next step

LGE Internal Use Only

NOT GOOD

Replace U1400

TP1 (For GSM1800/1900)

TP1 (For GSM850/900)

TP2 (For GSM1800/1900)

TP2 (For GSM850/900)

reserved. Only training and service purposes

3.6 WCDMA RF PART

24

WCDMA RF Part support WCDMA B1/2/5/8 with ASM, PAM, Transceiver component

Checking Flow

START

Check XO Block

Refer 3.1

Check Transceiver DC Power supply Block

Refer 3.2

Check DC-DC Block

Refer 3.3

3. TROUBLE SHOOTING

LGE Internal Use Only

Check ASM Block

Refer 3.4

Check T/RX Block

Re-Download & Cal

Change the Board

reserved. Only training and service purposes

3.6 WCDMA RF PART

25

3.6.1 WCDMA RF Part RX RF PATH

1. WCDMA B1 RX PATH

2. WCDMA B2 RX PATH

3. WCDMA B1/2 COMMON PATH

4. WCMDA B5 RX PATH

5. WCMDA B8 RX PATH

6. WCMDA B5/8 COMMON PATH

3. TROUBLE SHOOTING

Main

BOT

LGE Internal Use Only

reserved. Only training and service purposes

3.6 WCDMA RF PART

26

3.6.2 Checking RF Signal RX path(SW, WCDMA B1/B2)

Checking Flow

START

3. TROUBLE SHOOTING

Image

Main

Bot

Check TP1 Signal exist?

YES

Check TP2 Signal exist?

YES

Check next step

NO

Check SW1001

Soldering

Check FL1002

Soldering

TP1

TP2

SW1001

FL1002

Circuit Diagram

LGE Internal Use Only

TP2

reserved. Only training and service purposes

3.6 WCDMA RF PART

27

3. TROUBLE SHOOTING

3.6.3 Checking RF Signal RX path(WCDMA B1)

Checking Flow

START

Check TP1 Signal exist?

YES

Check TP2 Signal exist?

YES

Check TP3 Signal exist?

YES

NO

Replace U1200

Check FL1207 Soldering

and Check Component

above RF signal path

Check U1208 Soldering and

Check Component

above RF signal path

TP3

TP1

Image

Main

Bot

U1500

U1208

FL1207

U1200

TP2

Check Transceiver

physical damage

or soldering condition

Check next step

LGE Internal Use Only

Replace U1500

NOT GOOD

OK?

reserved. Only training and service purposes

3.6 WCDMA RF PART

28

3.6.3 Checking RF Signal RX path(WCDMA B1)

TP1

3. TROUBLE SHOOTING

Circuit Diagram

LGE Internal Use Only

TP2

TP3

reserved. Only training and service purposes

3.6 WCDMA RF PART

29

3.6.3 Checking RF Signal RX path(WCDMA B2)

Checking Flow

START

Check TP1 Signal exist?

YES

NO

Replace U1200

Main

Bot

3. TROUBLE SHOOTING

Image

TP3

U1500

Check TP2 Signal exist?

Check TP3 Signal exist?

Check Transceiver

physical damage

or soldering condition

Check next step

LGE Internal Use Only

YES

OK?

NO

NOT GOOD

Check FL1205 Soldering

and Check Component

above RF signal path

Check U1201 Soldering and

Check Component

above RF signal path

Replace U1500

U1201

TP2

FL1205

U1200

TP1

reserved. Only training and service purposes

3.6 WCDMA RF PART

30

3.6.3 Checking RF Signal RX path(WCDMA B2)

TP1

3. TROUBLE SHOOTING

Circuit Diagram

TP2

LGE Internal Use Only

TP3

reserved. Only training and service purposes

lg K500ds Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual