LG GM310 Manual de usuario

Service Manual Model : GM310

Internal Use Only

Service Manual

GM310

Date: April, 2009 / Issue 1.0

- 3 -

Only for training and service purposes

LGE Internal Use Only

Table Of Contents

1. INTRODUCTION...............................................5

1.1 Purpose......................................................................5

1.2 Regulatory Information.................................................5

1.3. ABBREVIATION ...........................................................7

2. PERFORMANCE............................................... 9

2.1 Supporting Standard....................................................9

2.2 Main Parts : Solution..................................................10

2.3 H/W features.............................................................10

2.4 HW Spec. ................................................................12

3. BB CIRCUIT TECHNICAL BRIEF..................... 15

3.1 Functional Block Diagram ..........................................15

3.2 Baseband Processor Introduction ..............................15

3.3 Power management IC...............................................27

3.4 Power ON/OFF ..........................................................34

3.5 SIM Interface.............................................................35

3.6 MICRO SD connector.................................................36

3.7 Memory ....................................................................37

3.8 LCD Display ..............................................................38

3.9 Keypad switching & scanning.....................................39

3.10 keypad back-light illumination ..................................40

3.12 Battery voltage monitor............................................42

3.13 Audio......................................................................43

3.14 BLUETOOTH............................................................46

3.15 18PIN Interface connector........................................49

4. RF Circuit Technical Brief ............................50

4.1 General Description ...................................................50

4.2 GSM Part..................................................................53

4.3 WCDMA Part.............................................................57

4.4 GSM Power Ampliﬁer Module.....................................59

4.5 WCDMA Band1+8 Power Ampliﬁer Module.................60

4.6 WCDMA Band1+8 Low Noise Ampliﬁer.......................61

4.7 WCDMA Band1 Duplexer ...........................................62

4.8 WCDMA Band5 Duplexer ...........................................63

5. Trouble shooting ..........................................64

5.1 Trouble shooting test setup ........................................64

5.2 Power on trouble .......................................................65

5.3 Charging Trouble .......................................................68

5.4 USB Trouble ..............................................................71

5.5 SIM Detect Trouble ....................................................73

5.6 Number Key Sense Trouble ........................................75

5.7 Multi Key sense Trouble .............................................77

5.8 Keypad backlight Trouble ...........................................79

5.9 Micro SD Trouble.......................................................81

5.10 Audio Trouble ..........................................................83

5.11 Microphone Trouble .................................................87

5.12 Camera Trouble.......................................................91

5.13 Main LCD Trouble ....................................................93

5.14 Bluetooth Trouble.....................................................95

5.15 RF Component ........................................................98

5.16 RF SIGNAL PATH .....................................................99

5.17 Trouble Shoothing of GSM Part...............................100

5.18 Trouble Shooting of WCDMA Part............................108

6. DOWNLOAD & S/W UPGRADE.....................115

7. BLOCK DIAGRAM........................................126

8. CIRCUIT DIAGRAM...................................... 127

9. BGA Pin Map .............................................. 137

10. PCB LAYOUT .............................................143

11. RF Calibration .......................................... 155

11.1. Test Equipment Setup ...........................................155

11.2. Calibration Step....................................................155

12. EXPLODED VIEW & REPLACEMENT

PART LIST ................................................161

12.1 EXPLODED VIEW ...................................................161

12.2 Replacement Parts ................................................163

12.3 Accessory .............................................................191

- 4 -

Only for training and service purposes

- 5 -

Only for 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 the GM310.

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. LGE

does not warrant that this product is immune from the above case but will prevent unauthorized use of

common carrier telecommunication service of facilities accessed through or connected to it. LGE 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 GM310 or compatibility with the net

work, the telephone company is required to give advanced written notice to the user, allowing the user

to take appropriate steps to maintain telephone service.

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Only for training and service purposes

1. INTRODUCTION

GM310f service manual

D. Maintenance Limitations

Maintenance limitations on the GM310 must be performed only by the LGE or its authorized agent. The

user may not make any changes and/or repairs expect as specifically noted in this manual. Therefore,

note that unauthorized 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

An GM310 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 Device (ESD), are indicated by the sign. Following

information is ESD handling:

• 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 package as

described.

- 7 -

Only for training and service purposes

LGE Internal Use Only

1. INTRODUCTION

GM310f service manual

1.3. ABBREVIATION

For the purposes of this manual, following abbreviations apply:

◆

APC Automatic Power Control

◆

BB Baseband

◆

BER Bit Error Ratio

◆

CC-CV Constant Current – Constant Voltage

◆

CLA Cigar Lighter Adapter

◆

DAC Digital to Analog Converter

◆

DCS Digital Communication System

◆

dBm dB relative to 1 milli-watt

◆

DSP Digital Signal Processing

◆

EEPROM Electrical Erasable Programmable Read-Only Memory

◆

EGPRS Enhanced General Packet Radio Service

◆

EL Electroluminescence

◆

ESD Electrostatic Discharge

◆

FPCB Flexible Printed Circuit Board

◆

GMSK Gaussian Minimum Shift Keying

◆

GPIB General Purpose Interface Bus

◆

GPRS General Packet Radio Service

◆

GSM Global System for Mobile Communications

◆

IPUI International Portable User Identity

◆

IF Intermediate Frequency

◆

LCD Liquid Crystal Display

◆

LDO Low Drop Output

◆

LED Light Emitting Diode

◆

LGE LG Electronics

◆

OPLL Offset Phase Locked Loop

◆

PAM Power Amplifier Module

◆

PCB Printed Circuit Board

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Only for training and service purposes

1. INTRODUCTION

GM310f service manual

◆

PGA Programmable Gain Amplifier

◆

PLL Phase Locked Loop

◆

PSTN Public Switched Telephone Network

◆

RF Radio Frequency

◆

RLR Receiving Loudness Rating

◆

RMS Root Mean Square

◆

RTC Real Time Clock

◆

SAW Surface Acoustic Wave

◆

SIM Subscriber Identity Module

◆

SLR Sending Loudness Rating

◆

SRAM Static Random Access Memory

◆

STMR Side Tone Masking Rating

◆

TA Travel Adapter

◆

TDD Time Division Duplex

◆

TDMA Time Division Multiple Access

◆

UART Universal Asynchronous Receiver/Transmitter

◆

VCO Voltage Controlled Oscillator

VCTCXO

◆

Voltage Control Temperature Compensated Crystal

Oscillator

◆

WAP Wireless Application Protocol

◆8PSK 8PhaseShiftKeying

- 9 -

Only for training and service purposes

LGE Internal Use Only

2. PERFORMANCE

GM310f service manual

2.1 Supporting Standard

Item Feature Comment

Supporting

Standard

WCDMA 2100/850

GSM850/EGSM900/DCS1800/PCS1900

with seamless handover

Phase 2+(include AMR)

SIM Toolkit : Class 1, 2, 3, A-E

Frequency Range GSM850 TX : 824 - 849 MHz

GSM850 RX :869 - 894 MHz

EGSM900 TX : 880 - 915 MHz

EGSM900 RX : 925 - 960 MHz

DCS1800 TX : 1710 - 1785 MHz

DCS1800 RX : 1805 - 1880 MHz

PCS1900 TX : 1850 - 1910 MHz

PCS1900 RX : 1930 - 1990 MHz

WCDMA2100 TX : 1920 - 1980 MHz

WCDMA2100 RX : 2110 - 2170 MHz

WCDMA850 TX : 824 - 849 MHz

WCDMA850 RX : 869 - 894 MHz

Application

Standard

WAP 2.0, JAVA 2.0

2.2 Main Parts : Solution

Item Part name Comment

Digital Baseband PMB8868 (Infineon)

Analog Baseband PMB8868 (Infineon)

RF chip PMB6952 (Infineon)

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Only for training and service purposes

2. PERFORMANCE

GM310f service manual

2.3 H/W features

Item Feature Comment

Form Factor Slide type

1)Capacity

Standard : Li-Ion, 900mAh

Battery

2) Packaging Type : Soft Pack

Item Feature Comment

Size 103 x 51.8 x 13.75

Weight 98 g With Battery

GSM 300 hours @paging period 5Stand-by

time WCDMA 300hours @DRX=7

GSM 240min @ Power Level 7Talk

time WCDMA 180min @Tx=12dBm

Charging time 3 hours @power OFF/900mAh

Rx sensitivity GSM850 : -105 dBm

EGSM900 : -105 dBm

DCS1800 : -105 dBm

PCS1900 : -105 dBm

WCDMA2100 : -106.7 dBm

WCDMA900 : -103.7 dBm

GSM/

GPRS

GSM850 : 33 dBm

EGSM900 : 33 dBm

DCS1800 : 30 dBm

PCS1900 : 30 dBm

Class4 (GSM850)

Class4 (EGSM900)

Class1(DCS)

Class1(PCS)

TX output

power

EDGE GSM850 : 27 dBm

EGSM900 : 27 dBm

DCS1800 : 26 dBm

PCS1900 : 26 dBm

E2 (EGSM850)

E2 (EGSM900)

E2 (DCS)

E2 (PCS)

GPRS compatibility GPRS Class 12

EDGE compatibility EDGE Class 12

Display 2.2” 240x320 (QVGA) TFT

Built-in Camera 3 Mega pixel

ANT Main : Internal Fixed Type

System connector 18 Pin

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Only for training and service purposes

LGE Internal Use Only

2. PERFORMANCE

GM310f service manual

Ear Phone Jack 3.5pi, 4 Pole, Stereo

PC synchronization Yes

Speech coding FR, EFR, HR, AMR

Vibrator Built in Vibrator

Blue Tooth V1.2, A2DP

Voice Recording Yes

Speaker Phone

mode Support

Yes

Travel Adapter Yes

CDROM No

Stereo Headset Yes

Data Cable No

T-Flash Yes

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