LG F1200 Manuel utilisateur

Service Manual Model : F1200

Service Manual

F1200

P/N : MMBD0045801 Date : Feb, 2005 / Issue 1.0

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1. INTRODUCTION ................................... 3

1.1 Purpose ................................................ 3

1.2 Regulatory Information ......................... 3

1.3 Abbreviations ........................................ 5

2. PERFORMANCE .................................. 7

2.1 H/W Features ....................................... 7

2.2 Technical Specification ......................... 8

3. TECHNICAL BRIEF .......................... 12

3.1 RF Transceiver General Description .. 12

3.2 Receiver Part ...................................... 12

3.3 Synthesizer Part ................................. 14

3.4 Transmitter Part .................................. 16

3.5 Digital Baseband ................................ 18

3.6 Analog Baseband ............................... 31

3.7 LCD & Camera Interface .................... 36

4. TROUBLE SHOOTING .................... 38

4.1 Baseband Part Troubleshooting ......... 38

4.2 Trouble Shooting of Receiver Part ..... 64

4.3 Trouble Shooting Transmitter Part ..... 73

4.4 RF Rx Tx signal flow on Test mode ... 83

5. DISASSEMBLY INSTRUCTION .... 84

DOWNLOAD AND CALIBRATION

.... 91

6.1 Download ............................................ 91

6.2 Download Procedure........................... 92

7. BLOCK DIAGRAM ............................ 99

8. CIRCUIT DIAGRAM ........................ 101

9. PCB LAYOUT .................................... 106

10. ENGINEERING MODE ................ 109

11. STAND ALONE TEST ................. 110

11.1 What’s the Standalone Test? ........ 110

11.2 Standalone Test Equipment

Setup ............................................ 111

11.3 HW Test : Software for Standalone

Test Setup .................................... 112

11.4 Tx Stand alone Test Setting ......... 114

11.5 Rx Stand alone Test Setting ........ 116

12.

SERVICE AND CALIBRATION

.... 118

12.1 Service S/W................................... 118

12.2 Calibration .................................... 120

13. EXPLODED VIEW &

REPLACEMENT PART LIST ...... 125

13.1 Exploded View ............................ 125

13.2 REPLACEMENT PARTS ............ 127

Table Of Contents

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REVISED HISTORY

The information in this manual is subject to change without notice and should not be construed as a

commitment by LGE Inc. Furthermore, LGE Inc. reserves the right, without notice, to make changes

to equipment design as advances in engineering and manufacturing methods warrant.

This manual provides the information necessary to install, program, operate and maintain the

F1200.

DATE ISSUE CONTENTS OF CHANGES S/W VERSION

JAN/2005 ISSUE1 Initial Release

1. INTRODUCTION

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1. INTRODUCTION

1.1 Purpose

This manual provides the information necessary to repair, calibration, description and download

the features of F1200.

1.2 Regulatory Information

(1) 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 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 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. The manufacturer will not be responsible for any charges that are

resulted from such unauthorized use.

(2) 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.

(3) 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 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.

(4) Maintenance Limitations

Maintenance limitations on this model must be performed only by the manufacturer or its

authorized agent. Therefore, note that unauthorized alternations or repair may affect the

regulatory status of the system and may void any remaining warranty.

(5) 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.

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(6) Pictures

The pictures in this manual are for illustrative purposes only; your actual hardware may look

slightly different.

(7) Interference and Attenuation

Phone may interfere with sensitive laboratory equipment, medical equipment, etc. Interference

from unsuppressed engines or electric motors may cause problems.

(8) 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.

1. INTRODUCTION

- 5 -

1. INTRODUCTION

1.3 Abbreviations

For the purposes of this manual, following abbreviations apply:

APC Automatic Power Control

BB Baseband

BER Bit Error Rate

CC-CV Constant Current – Constant Voltage

DAC Digital to Analog Converter

DCS Digital Communication System

dBm dB relative to 1 milli watt

DSP Digital Signal Processing

ESD Electrostatic Discharge

FPCB Flexible Printed Circuit Board

GMSK Gaussian Minimum Shift Keying

GPIB General Purpose Interface Bus

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

OPLL Offset Phase Locked Loop

PAM Power Amplifier Module

PCB Printed Circuit Board

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

1. INTRODUCTION

- 6 -

SIM Subscriber Identity Module

SLR Sending Loudness Rating

SRAM Static Random Access Memory

PSRAM Pseudo SRAM

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

2. PERFORMANCE

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2. PERFORMANCE

2.1 H/W Features

Item Feature Comment

Standard Battery Li-Ion, 950mAh

AVG TCVR Current 240mA

Standby Current < 5.2mA

Talk time Over 5 hour (@ GSM Tx Level 7)

Standby time Over 250 hour (@ Paging Period 9, RSSI : -85dBm)

Charging time 3 hours

RX Sensitivity GSM900 : -105dBm, DCS/PCS : -105dBm

TX output power GSM, EGSM: 32dBm (Level 5)

DCS/PCS: 29dBm (Level 0)

GPRS compatibility Class 12

SIM card type 3.0V Only

Display Main : 128 x 160 TFT, Sub : 96 x 96 TFT

Status Indicator Key Pad (Main) : 0 ~ 9, #, *, Navigation Key,

Up/Down Side Key,

Camera Side Key, Confirm Key,

Send Key, END/PWR Key

Key Pad (Folder) : Rewind, Fasten Forward, Play

ANT Internal

EAR Phone Jack 12-pin

PC Synchronization Yes

Speech coding EFR / FR

Data and Fax Yes

Vibrator Yes

Buzzer No

Voice Recording Yes

C-Mic Yes

Receiver Yes

Travel Adapter Yes

Options Hands-Free Kit, Data Kit

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2.2 Technical Specification

Item Description Specification

GSM900

TX: 890 + n x 0.2 MHz (n=1 ~ 124)

890 + (n-1024) x 0.2 MHz (n=975 ~ 1023)

RX: TX + 45 MHz

DCS1800

1 Frequency Band TX: 1710 + (n-511) x 0.2 MHz (n = 512 x 885)

RX: TX + 95 MHz

PCS1900

TX: 1850 + (n-511) x 0.2 MHz

RX: 1930 + (n-511) x 02MHz (n = 512 x 810)

2 Phase Error RMS < 5 degrees

Peak < 20 degrees

3 Frequency Error < 0.1ppm

GSM900

Level Power Toler. Level Power Toler.

5 33 dBm 2dB 13 17 dBm 3dB

6 31 dBm 3dB 14 15 dBm 3dB

7 29 dBm 3dB 15 13 dBm 3dB

8 27 dBm 3dB 16 11 dBm 5dB

9 25 dBm 3dB 17 9 dBm 5dB

10 23 dBm 3dB 18 7 dBm 5dB

11 21 dBm 3dB 19 5 dBm 5dB

12 19 dBm 3dB

4 Power Level DCS1800/PCS1900

Level Power Toler. Level Power Toler.

0 30 dBm 2dB 8 14 dBm 3dB

1 28 dBm 3dB 9 12 dBm 4dB

2 26 dBm 3dB 10 10 dBm 4dB

3 24 dBm 3dB 11 8 dBm 4dB

4 22 dBm 3dB 12 6 dBm 4dB

5 20 dBm 3dB 13 4 dBm 4dB

6 18 dBm 3dB 14 2 dBm 5dB

7 16 dBm 3dB 15 0 dBm 5dB

2. PERFORMANCE

- 9 -

2. PERFORMANCE

Item Description Specification

GSM900

Offset from Carrier (kHz) Max. dBc

100 +0.5

200 –30

250 –33

400 –60

600 ~ 1,200 –60

1,200 ~ 1,800 –60

1,800 ~ 3,000 –63

3,000 ~ 6,000 –65

5 Output RF Spectrum 6,000 –71

(due to modulation) DCS1800/PCS1900

Offset from Carrier (kHz) Max. dBc

100 +0.5

200 –30

250 –33

400 –60

600 ~ 1,200 –60

1,200 ~ 1,800 –60

1,800 ~ 3,000 –65

3,000 ~ 6,000 –65

6,000 –73

GSM900

Offset from Carrier (kHz) Max. dBm

400 –19

600 –21

1,200 –21

6 Output RF Spectrum 1,800 –24

(due to switching DCS1800/PCS1900

transient)

Offset from Carrier (kHz) Max. dBm

400 –22

600 –24

1,200 –24

1,800 –27

7 Spurious Emissions Conduction, Emission Status

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