LG LG-600 Series Betriebsanleitung

GSM Handsets Lab.

GSM Phone

REPAIR MANUAL

MODEL : LG-600 Series

GSM Handsets Lab. 2

1. INTRODUCTION .…………………………………

1.1 Purpose .…………………………………..…...

1.2 Abbreviations ………………………………...

2. TEST SETUP ………………………………..…....

2.1 Normal Setup …..……………………..…....

2.2 Standard Setup .………..……………..…....

3. ASSEMBLY INSTRUCTION ……………………

3.1 Assembly / Diassembly ……………………

3.2 Assembly / Diassembly of Front Cover

Componet …………………………………..

4. DOWNLOAD .……………………………………

.1 Download Setup ……..…………………………

.2 Download ……………………….………………

5. ENGINEERING MODE ………………

5.1 BB Test ………………………………

5.2 Trace Test …………………………

5.3 S/W Version …………………………

5. SIM Lock ……………………………

5.5 Call Timer ……………………………

5.6 Fact. Reset …………………………

6. TROUBLE SHOOTING ………………

6.1 Power Supply…………………………

6.2 Voice ………………………………...

6.3 Display ………………………………

6. Rx and Tx .……………………………

6.5 The Other Function …………………

A endix

A.1 RF Component …………………….

A.2 Receiver RF Block Diagram .…….

A.3 Transmitter RF Block Diagram ….

A. Rx Flow Chart & Solution ………….

A.5 Tx Flow Chart & Solution ………….

A.6 MIC Flow Chart & Solution ……….

A.7 Receive Flow Chart & Solution ….

A.8 LCD Flow Chart & Solution ……….

Table of Contents

GSM Handsets Lab. 3

1. INTRODUCTION

•1.1 Purpose

This manual provides the information necessary to repair, description

and download the features of the LG-600 series, specially this book has

the chip aim of our repair men to improve their ability.

• Applicability

This trouble shooting is only applicable to professional engineer for

repairing mobile phone.

• Maintenance Limitations

Maintenance limitations on the LG-600 series must be

performed only by the LGE or its authorized agent. The user

may not make any changes and or repairs expect as speci"cally

noted in this manual. Therefore, note that unauthorized

alternations or repair may a$ect the regulatory status of the

system and may void any remaining warranty.

GSM Handsets Lab. 4

1. INTRODUCTION

aseband

LDO Low Drop Output

LED Light Emitting Diode

CC-CV Constant Current – Constant Voltage

CLA Cigar Lighter Adapter

DAC Digital to Analog Converter

DCS Digital Communication System

DSP Digital Signal Processing

EL Electroluminescence

ESD Electrostatic Discharge

FPC Flexible Printed Circuit oard

GMSK Gaussian Minimum Shift Keying

GPI General Purpose Interface us

GPRS General Packet Radio Service

GSM Global System for Mobile Communications

UART Universal Asynchronous Receiver/Transmitter

IF Intermediate Frequency

LCD Liquid Crystal Display

PC Printed Circuit oard

PSTN Public Switched Telephone Network

RF Radio Frequency

RTC Real Time Clock

SIM Subscriber Identity Module

SRAM Static Random Access Memory

TA Travel Adapter

TDD Time Division Duplex

TDMA Time Division Multiple Access

WAP Wireless Application Protocol

IPUI International Portable User Identity

•1.2 Abbreviations

GSM Handsets Lab.

1. INTRODUCTION



ATTENTION



oards, 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.

GSM Handsets Lab. 6

2. TEST SETUP

•2.1 Normal Setup

COMPUTER

LG-600

RS-232CABLE

COM1

I/OConnector

GSM Handsets Lab. 7

2. TEST SETUP

•2.2 Standard Setup

COMPUTER

MON

UART

PHONE

POWER

DIPS/W

PIF(LG-600JIG)

POWERSUPPLY

GSMTESTSET(8 60)

LG-600

MOBILERFCABLE

POWERCABLE

RS-232CABLE

I/OCON.CABLE

SPECTRUMANALYZER

HIGHFREQUENCYPROBE

OSCILLOSCOPE

PROBE

GPIBCABLE

+-

-S-++S

GPIB

GPIB GPIB COM1

GPIB

GPIBCABLE

RFIN/OUT

I/OConnector

GSM Handsets Lab. 8

2. TEST SETUP

A. Com uter

1. Put GPIB card to the extended slot of personal computer.

If you have a notebook PC, you need PCMCIA card for GPIB.

2. Connect the RS-232 cable between COM port of your PC and MON port or

UART port of PIF.

MON Port : Download, CAL Test (????)

UART : Auto Test or Handsfree_Set (????)

B. GSM TEST_SET(8960)

1. Connect GPIB cables (from Computer and Power Supply) to the rear panel

of 8960.

2. Connect mobile RF cable to RF In/Out port at the front panel of 8960.

C. Power Su ly

1. Setup : Voltage .0V, max Current 3A.

2. Connect GPIB cable at the rear panel.

3. Connect power cable

GSM Handsets Lab. 9

2. TEST SETUP

PIF DIP Switch

D. PIF(JIG for LG 600)

1. Connect I/O connector cable for 600 to PIF phone port.

2. Connect the power cable ro PS port of PIF.

3. Connect the RS-232 cable ro PIF MON or UART.

OFF

REMOTE

H/F

DIP Switch

*H/F=Hands Free

*PS=Power Su ly

GSM Handsets Lab. 10

2. TEST SETUP

D. PIF(JIG for LG 600)

JTAG1 AUDIOJTAG2

MON

UART

PHONE

TA MON

Status

UART

Status

Power

+ PS -

DC IN

12V

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