LG GB175 Manuel utilisateur

GB175

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………………16

3.1 Digital Main Processor(MT6225)……….16

3.2 Power Amplifier Module(SKY77518)…....23

3.3 Transceiver Module(AD6548)…………..24

3.4 PMIC (MT6318)……………………….26

3.5 Memory Module (PF38F4050M0Y0CG)…….28

3.6 FM Radio Module (Si4708)…………..32

3.7 Antenna Switch Module (B9308)……...34

3.8 LCD Interface……………………….…35

3.9 SIM& Micro SD Card Interface…..…..37

3.10 KEYPAD Interface…………………..38

3.11 Battery Charging Block Interface…..39

3.12 Audio Interface……………….….…..40

3.13 Vibrator Interface….………………...42

4. TROUBLE SHOOTING…………..43

4.1 Power On Trouble…………………….43

4.2 SIM Card Trouble……………………..45

4.3 Vibrator Trouble……………………….47

4.4 Keypad Trouble……………………….48

4.5 RTC Trouble…………………………...50

4.6 Key Backlight Trouble………………...53

4.7 LCM Backlight Trouble……………….56

4.8 LCM Trouble……………….………….58

4.9 Microphone Trouble…………………..60

4.10 Receiver Trouble…………………….62

4.11 Speaker Trouble……………………..64

4.12 Headphone Trouble…………………66

4.13 Charging Trouble…………………….69

4.14 FM Radio Trouble…………………...71

4.15 RF Trouble…………………………...73

5. DOWNLOAD………………...…….78

5.1 Download setup………………………78

5.2 Download Process……………………79

6. BLOCK DIAGRAM……………….87

7. CIRCUIT DIAGRMA……………...88

8. BGA IC PIN Check……………….96

9. PCB LAYOUT……………………..99

10.ENGINEERING MODE…………101

11. CALIBRATION………………….105

11.1 Test Equipment Setup……………..105

11.2 Calibration Steps…………………...106

12. STAND ALONE TEST…………145

12.1 Test Configuration………………….145

12.2 META tool Install process…………146

12.3 Rx Test………………………………149

12.4 Tx Test……………………………....153

13. EXPLODED VIEW&

REPLACEMENT PART LIST……..155

13.1 Exploded View……………………..155

13.2 Replacement Part list..…………....157

-3-

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.

-4-

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.

-5-

2. PERFORMANCE

2.1 H/W Features

Solution MT6225 Media Tek / AIT

Form Factor Bar type

Dimension (mm) 103 x 46 x 13.65

RF Band Dual Band 900/1800 Internal Antenna

Data GPRS Class 10

Main Display 1.5” TFT 65K color, 128x128 Pixels

Battery 950 mA h Same as LG6/7

Audio player Yes MP3/AAC/(AAC+ w/o DRM)

FM Receiver Yes , US/Europe

band(87.5~108MHz)

Loud Speaker Yes

Memory Size 256Mb NOR Flash +64Mb PSRAM 6225 support 1.8 or not

User Memory Yes 6M Bytes

Memory Card Yes Micro SD

Scheduled FM recording Yes

FM as alarm Yes

Embedded FM antenna Yes Pogo pin contact FPC type

FM Antenna on Battery cover.

Audio player--real resuming Yes For MP3 only

USB Yes

Slave 1.1

WAP Yes

V2.0

Java Yes

DRM No OMA DRM v1.0

Music Equalizer Yes Follow MTK

In flight mode Yes

-6-

2.2 S/W Features

2.2.1 General Features

Function Target Specification Parameter Support

Basic Display

RSSI (6 Level, 0~5) Y

Battery Indicator (4 Level, 0~3) Y

Icons Indicator Y

Others reference to "Phone Personalization

Setting"

Speech Codec FR/EFR/HR/AMR Y

Keypad

Number of Keys: 21Key (include 12

alphanumeric/number keys (0-9,#,*), 4

function keys, 5 way navigation keys)

Clear key N

International Access (+)(long 0) Y

User Profile

(Audio Settings)

User Selectable and Customizable Profiles

(profiles: Normal, Silent, Outdoor, Flight

mode)

Auto-detect and activated profiles Y

Key Tone

Key Tone Volume (6 Level - 0 ~ 5, 0 for Mute) Y

Key tone setting (4 sets: Silent, Click, Tone,

English Human voice)

Ring Tone

Ring Tone Volume (6 Level - 0 ~ 5, 0 for Mute) Y

Built-in Ring Tone Pattern: 20 Y

Customizable Ring Tone Link: 5 Y

Intelligent Call Alert

Digits To Sound Synthesizing Y

Alert Type

5 Types - Ring, Vibrate, Ring & vibrate, Ring

after vibrate, Silent

Power On Tone

Built-in Ring Tone Pattern: 5 (include Silent) Y

Power Off Tone

Built-in Ring Tone Pattern: 5 (include Silent) Y

Message Tone

Built-in Ring Tone Pattern: 5 Y

Warning Tone

Built-in Ring Tone Pattern:

1 (Only On/Off operation)

Error Tone

Built-in Ring Tone Pattern:

1 (Only On/Off operation)

Camp On Tone

Built-in Ring Tone Pattern:

1 (Only On/Off operation)

Connect Tone

-7-

Function Target Specification Parameter Support

Built-in Ring Tone Pattern:

1 (Only On/Off operation)

Status LED N

Charger-in Status LED Y

Answer Mode Y

Any Key Answer Y

Auto (Only available for headset mode while

headset plugged in)

Personal Information

Management

Calendar - Month view only Y

To do list - 6 fields (Date, Start time, End time,

Note, Alarm, Repeat)

Tools and Utilities

Alarm

5 sets of Alarm Y

4 major fields for each set - On/Off, Time,

Repeat type, Audio option

World Clock

Cities list: China(49),IND(51),CIS(65) cities Y

Daylight saving time support: activated by user

selection

Home city set Y

Calculator

Addition, Subtraction, Multiplication, Division Y

Unit Converter

Weight, Length Y

Currency Converter

Health Y

BMI, Menstrual Y

Phone Personalization

Setting

Greeting Text Y

Shortcuts Y

Flight Mode Y

Time and Date Setting Y

Wallpaper Y

Screen Saver N

Power On Animation Y

Power Off Animation Y

LCD Backlight Y

PLMN/Service Indicator (Display of PLMN

Name/Service Provider Name from SIM)

Date Time Display Y

Own Number Display Y

Restore Factory Default Setting Y

Security Phone Lock Y

Input Method

Engine

T9 Y

-8-

Function Target Specification Parameter Support

Support Language

Depends on customer and market requirement.

Total supported languages will be limited to

memory condition.

Predictive word input Y

Game

3 embedded Java game Y

Settings:

BGM, Sound Effect, Vibration

2.2.2 Networking Features

Function Target Specification Parameter Support

GPRS GPRS Multi slot Class 10 Y

Data Service BS 24 - 26 (2400-9600 bit/s), asynchronous,

non-transparent, UDI.

CSD rate up to 9.6K bit/s

Call History

Last Dialed Number : 50 Y

Last Received Number : 50 Y

Last Missed Number : 50 Y

Scratch Pad Memory(Save an input number

in call) : 1

Call Cost

Last Call Time Y

Total Dialed Call Time Y

Total Received Call Time Y

Last Call Cost Y

Total Cost Y

Max Cost Y

Price Per Unit Y

GPRS Counter

Last Sent (unit in Byte) Y

Last Received (unit in Byte) Y

All Sent (unit in Byte) Y

All Received (unit in Byte) Y

Call Management

Call Swap Y

Call Retrieve Y

Automatic Redial Y

Speed Dialing Y

Last Number Redial Y

Call

Related Supplementa

ry Services

Call Hold Y

Call Waiting Y

Calling Line Identity Presentation Y

Calling Line Identity Restriction Y

-9-

Function Target Specification Parameter Support

Connected Identification Restriction Y

Call Divert All voice Calls Y

Call Divert if unreachable Y

Call Divert if no answer Y

Call Divert if busy Y

Call Divert all data calls Y

Cancel all divert Y

Call Barring All Outgoing Calls Y

Call Barring All Outgoing International Calls

Call Barring All outgoing International except

home

Call Barring All incoming Calls Y

Call Barring All incoming Calls when

roaming

Multi-party Call (up to 7 calls, 5 in

conference, 1 on held, 1 waiting)

Line switching (Line1, Line2)

Call reminder (Off, Single, Periodic)

Closed User Group

Phone Book

Quick Search (Notice: Quick search function

only works in Phonebook, SMS and MMS.

In other application, this phone supports

regular search.)

Alpha Store and Recall Y

Access Phone Book in call Y

Copy & Move Y

Fixed Dial Number Y

Service Dial Number Y

Speed Dial Number Y

SOS Number Y

Entry : 1000 names (10 fields: Name,

Mobile, Home, Office, Fax, Email,

Anniversary, Ringtone, Group, memo.)

Caller Group-7caller group- Friends,

Family, VIP, Colleague, Group1, Group2,

No group

Own Numbers: User can change the own

numbers of handset. (Sets of own numbers

depends on SIM)

vCard: (Edit, Send and Receive. 7 fields –

Name, Mobile, Home, Company Name,

Email Address, Office Number, Fax

Number)

Version 2.1 Y

Note: This phone doesn’t support phone

number search.

Message

SMS

Standard SMS Y

SMS Reply Path Y

-10-

Function Target Specification Parameter Support

SMS Delivery Report

Valid period (1 hour/12 hours/1 day/1

week/Maximum)

Message Type (Text, Fax, Page,

Email) Message Indication Type refer to

GSM 03.40

Basic text-only SMS as described in 3GPP

TS 23.040 R5

Notice: This phone doesn’t support video

ring tone via SMS

SMS Character Sets Support

GSM7 Y

UCS-2 Y

EMS

EMS Standard as described in 3GPP TS

23.040 R5 excluding WVG

EMS Text Format

Text Style : Normal, Bold, Italic, Underlined,

Strikethrough

Text Alignment : Left, Right, Center Y

Text Size : Normal, Large, Small Y

EMS Image Support

1-bit small image 16x16 pixels black and

white

1-bit large image 32x32 pixels black and

white

1-bit variable image in single SMS packet Y

Extended black and white 1-bit image up to

255x255 pixels

Extended 6-bit image up to 255x255 Y

Pre-defined animation Y

User-defined small animation 8x8 pixel

4-frame black and white

User-defined large animation 16x16 pixel

4-frame black and white

Pre-defined sound Y

User-defined i-Melody up to 128 bytes Y

LZSS compression algorithm Y

Re-use extended object Y

Object Distribution Y

User Prompt Indicator Y

Hyperlink format element Y

Extended Object Distribution Y

EMS Character Sets Support Y

GSM7 Y

UCS-2 Y

EMS Miscellaneous Y

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