LG LG-A120 Manual de usuario

LG-A120

Service Manual

LG Electronics

Table Of Contents

1. INTRODUCTION…………………...3

1.1 Purpose…………………………………3

1.2 Regulatory Information………………..3

2. PERFORMANCE…………………..5

2.1 H/W Features…………………………..5

2.2 S/W Features…………………………..6

3. TECHNICAL BRIEF………………14

3.1 Digital Main Processor(

MT6223

)……….14

3.2 Power Amplifier Module(

SKY77542

)…....22

3.3 Transceiver Module(

AD6548

)…………..23

3.4 Memory Module (

K5L6443ABM-AD11)

….....26

3.5 FM Radio Module (

AR1200/1210

)…….….30

3.6 LCD Interface………………………....32

3.7 SIM Card Interface…..……………….34

3.8 KEYPAD Interface……………….…...35

3.9 Battery Charging Block Interface…...36

3.10 Audio Interface……………….….…..37

3.11 Vibrator Interface….………………...38

3.12 Key LED Interface……………….….39

4. TROUBLE SHOOTING…………..40

4.1 Power On Trouble……………………40

4.2 SIM Card Trouble…………………….43

4.3 Vibrator Trouble………………………45

4.4 Keypad Trouble……………………….47

4.5 RTC Trouble…………………………..50

4.6 Key Backlight Trouble………………..52

4.7 LCM Backlight Trouble…………….…55

4.8 LCM Trouble……………….……….…58

4.9 Microphone Trouble…………………..61

4.10 Receiver Trouble…………………….64

4.11 Speaker Trouble……………………..66

4.12 Headphone Trouble………….……...69

4.13 Charging Trouble…………………....73

4.14 Torch LED Trouble…………….75

4.15 FM Radio Trouble……………..77

4.16 No Connection Trouble……….80

4.17 RX Trouble…………………..…83

4.18 DCXO Trouble…………………86

4.19 SAW Filter Trouble……………87

4.20 TX Trouble……………………..88

4.21 Transceiver trouble……………90

4.22 PAM Trouble…………………...91

4.23 Mobile Switch Trouble………...96

5. DOWNLOAD………………....98

5.1 Download setup…………………98

5.2 Download Process……………...99

6. BLOCK DIAGRAM………….107

7. CIRCUIT DIAGRMA………...108

8. BGA IC PIN Check…………114

9. PCB LAYOUT……………….116

10.ENGINEERING MODE……118

11. CALIBRATION…………….122

11.1 Test Equipment Setup……….122

11.2 Calibration Steps……………..123

12. STAND ALONE TEST…….162

12.1 Test Configuration……………162

12.2 META tool Install process…...163

12.3 Rx Test………………………...166

12.4 Tx Test…………………………172

13. #EV#………………………...178

1. INTRODUCTION

1.1Purpose

This manual provides information necessary to repair, 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

dose not warrant that this product is immune from the above case but will prevent unauthorized

use of common-carrier telecommunications 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 authorized alternations or repair may affect the regulatory status of the

system and may void any remaining warranty.

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

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 Devices(ESD),are indicated by the

sign .

Following information is ESD handing:

. 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

packages as

described.

2. PERFORMANCE

2.1 H/W Features

Solution 6223D MTK

Type Bar type

Antenna Type Internal (dual-Band)

Main Display 1.77” 128 x 160 , TFT/65k

Battery 950mAh Li-ion inner pack 950mAh: 55x34x5.7mm

Music player Yes Only for FM (AMR/WAV

file)

FM Receiver Yes , US/Europe band support (87.5~108MHz)

Embedded FM antenna Yes

Tension contact FPC

type FM Antenna on

Battery cover.

Real time FM recording Yes

Loud Speaker Yes x 2 ,

16 speaker

Music player--real resuming Yes

Memory Size 64Mb+32Mb User memory: 729KB

LMT (Lost Mobile Tracker) Yes LMT for: AMA

M-DOG: China

Torch LED Y

In flight mode Yes

2.2 S/W Features

Feature Detail Item Description

OS OS Operating System Y

Speech Code FR,EFR,HR,AMR-NB Y

AMR code GSM Full Rate

3GPP Adaptive Multi Rate (AMR-NB)

FM Radio Y

MP3 Ring

Tone

MP3 decode Y

Integrated hands

free

speaker

Speaker phone mode Y

Key Tone

Volume

6 Level (Include Mute) Y

Ring Tone

Volume

6 Level (Include Mute) Y

Ring Tone MP3 ring tone/Midi Y

Call Alert

type

Ring, Vibrate, Ring & Vibrate, Ring after

vibrate, Silent

Earpiece

Volume

6 Level (Include Mute) Y

Audio

Mute Y

GSM dual

band MS

900-1800

Configuration is during software compile

time.

YFrequency

Bands

PCS dual

band MS

850-1900

Circuit NDate Service

Packet N

Infrared

(IrDA)

Bluetooth N

USB N

USB Mass

storage

Connectivity

RS232(UAR

Only for manufacture tool Y

Voice

Recording

Voice

Command

Voice

Function

Answering

machine

Capture Size 160x120, 320x240, 640x480 N

Preview Size Full Screen: 128x128 N

Quality Low, Normal, High N

EV +4, +3, +2, +1, 0, -1, -2, -3, -4 N

WB Auto, Daylight, Tungsten,

FLUORESCENT, Cloud,

INCANDESCENCE

Zoom 640x480 : 1x

320x240 : 1x, 2x

160x120/128x128 : 1x, 2x, 4x

Effect Normal, Sepia, Grayscale, Color invert N

Continuous

Shot

1 Shot, 3 shot, 6 shot N

Self Timer 3 seconds, 5 seconds, 10 seconds N

Shutter tone Off, tone1, tone2, tone3 N

Storage Phone/SD card N

Camera

Reset Setting Restore to default setting N

Browse detail

image Info

NImage Viewer

Full Screen

View

Browse file

tree

Copy,

Rename,

Delete, Move

files

File Manager

(Sound folder)

Rename,

Delete,

Multi-Delete,

Create folder

Display RSSI 6 level (0~5 level) Y

Battery level 4 level (0~3 level) Y

RTC Date & Time Display Y

PLMN/Servic

e Indicator

Quick Access

Mode In Idle

Dimming

Clock

Dual Clock N

Home

shortcut

Display Shortcut icon in Idle(Quick

Access)

Last Dial

Number

Max : 40 records Y

Last

Received

Number

Max : 40 records Y

Last Missed

Number

Max : 40 records Y

Scratch Pad

Memory

Call History

Call Duration Last Call time, Total Call Time Y

Last Call

Charge Units

YCall Cost

Total Charge

Units

Call Waiting Y

Call Swap Y

Call Retrieve Y

Auto Answer N

Auto Redial Y

Calling Line N

Full Call

Divert

Speed

Dialing

Call

Management

Last Number

Redial

Multi Party

Call

ECT Explicit Call Transfer Y

Automatic Network

Selection

Manual

Network

Preferred

Network

(User definition) Y

Network

Service

Status

DTMF

Signaling

YDTMF

DTMF

Enable &

Disable

Read Cell

Broadcast

On/Off

setting

Receive On/Off Y

Alert setting N

CB message

Language

setting

Cell Broadcast

Channel

Setting

Entry 1000 Y

Field Name, Mobile, Home, Office Y

Copy ME <-> SIM Y

Move ME <-> SIM Y

FDN Y

SDN Y

Email Entry N

Picture ID N

Video Caller

Contacts(Pho

ne Book)

vCard N

Business

Card

Delete Delete, Delete All(SIM or Phone), Multi

Delete

CFU Call Forwarding Unconditional Y

CFB Call Forwarding on Mobile Subscriber

Busy

CFNRy Call Forwarding on No Reply Y

CFNRc Call Forwarding on Mobile Subscriber

Not Reachable

BAOC Barring of All Outgoing Calls Y

BOIC Barring of Outgoing International Calls Y

BOICexHC Barring of Outgoing International Calls

except those directed to the Home

PLMN Country

BAIC Barring of All Incoming Calls Y

BICRoam Barring of Incoming Calls when

Roaming Outside the/Home PLMN

Country

Supplementary

Services

Conference

Call

Up to 5 Y

Plug in Type 3V & 1.8 V Y

SIM Lock Service Provider / Network Lock N

SIM

SIM Toolkit Class 3 Y

Read

Message

Write and

Edit Message

Send and Receive

Message

Reply to

Message

Forward

Message

Short

Message

Extract Number

from

Message

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