LG MG300d Manuale utente
Date: January, 2006 / Issue 1.0
Service Manual Model : MG300d
Service Manual
MG300d
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1. INTRODUCTION .............................. 5
1.1 Purpose................................................... 5
1.2 Regulatory Information............................ 5
1.3 Abbreviations .......................................... 7
2. PERFORMANCE.............................. 9
2.1 H/W Feature............................................ 9
2.2 RF Characteristics ................................ 15
2.3 Technical Specification ......................... 18
3. TECHNICAL BRIEF ....................... 23
3.1 Power Transceiver .................................23
3.2 13 MHz Clock.........................................30
3.3 Switchplexer for Triband ........................30
3.4 Digital Main Processor ...........................32
3.5 Analog Main & Power Management
Processor...............................................38
3.6 Chargind IC............................................46
3.7 CAMERA IC ...........................................49
3.8 MIDI IC...................................................51
3.9 Keypad Switches and Scanning ............55
3.10 Microphone ..........................................56
3.11 Main Speaker.......................................56
3.12 Headset Interface.................................57
3.13 MEMORY.............................................58
BLUETOOTH .......................................59
CAMERA CONNECTOR, CAMERA LDO ..60
FLASH LED CHARGE PUMP..............61
NAND MEMORY..................................62
FLIP SWITCH ......................................63
3.14 VIBRATOR...........................................64
4. TROUBLESHOOTING ................... 65
4.1 RX Trouble.............................................65
4.2 TX Trouble .............................................71
4.3 Power On Trouble..................................78
4.4 Charging Trouble ...................................80
4.5 Vibrator Trouble .....................................82
4.6 LCD Trouble...........................................84
4.7 BT Trouble .............................................87
4.8 Speaker Trouble ....................................90
4.9 SIM Card Interface Trouble....................92
4.10 Earphone Trouble ................................94
4.11 Receiver Trouble..................................96
4.12 Microphone Trouble .............................98
4.13 RTC Trouble ......................................100
5. DOWNLOAD AND CALIBRATION ..... 102
5.1 Download............................................ 102
5.2 Calibration........................................... 106
6. BLOCK DIAGRAM ....................... 113
7. CIRCUIT DIAGRAM ..................... 115
8. PCB LAYOUT............................... 125
9. ENGINEERING MODE ..................127
9.1 BB Test [MENU 1]................................128
9.2 RF Test [MENU 2]................................130
9.3 MF mode [MENU 3] .............................130
9.4 Trace option [MENU 4] ........................131
9.5 Call timer [MENU 5] .............................131
9.6 Fact. Reset [MENU 6] ..........................131
9.7 S/W version..........................................131
10. STAND ALONE TEST ................ 132
10.1 Introduction ........................................132
10.2 Setting Method...................................132
10.3 Means of Test ....................................133
Table Of Contents
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11. AUTO CALIBRATION................. 135
11. AUTO CALIBRATION ..........................135
11.1 Overview ............................................135
11.2 Requirements.....................................135
11.3 Menu and Settings.............................135
11.4 AGC ...................................................137
11.5 APC....................................................137
11.6 ADC ...................................................137
11.7 Setting................................................137
11.8 How to do calibration .........................137
12. EXPLODED VIEW &
REPLACEMENT PART LIST ..... 140
12.1 EXPLODED VIEW ............................ 140
12.2 Replacement Parts
<Mechanic component>.................... 143
<Main component> ........................... 147
12.3 Accessory ......................................... 163
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1. INTRODUCTION
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1.1 Purpose
This manual provides the information necessary to repair, calibration, 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 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 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 unauthorized alternations or repair may affect the regulatory status of the system
and may void any remaining warranty.
1. INTRODUCTION
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1. INTRODUCTION
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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 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.
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1. INTRODUCTION
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1.3 Abbreviations
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
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
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
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1. INTRODUCTION
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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
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
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2. PERFORMANCE
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2.1 H/W Features
2. PERFORMANCE
Item Target Specification
Form Factor Clam Shell (Dual LCD)
Size 89.9 X 46.2 X 23 mm
Weight TBD
Battery 3.7V, 1000 mAh LI-Ion
Talk Time Up to 3h : GSM Tx Level 7
Standby Time Up to 200 hrs : Paging Period 9, RSSI 85dBm
Antenna Internal Antenna
LCD Main: 262K Colour 128*160 TFT / Sub: 65K Colour OLED 96*96
Camera Built-in CMOS 1.3M Pixels Camera
Back Light(Key Pad) LED
Back Light colour(Key) Blue
Vibrator Yes
Buzzer N/A
C-MIC Yes
Receiver Yes
Earphone Jack Yes / Jack
SIM Socket Yes (SIM Block Type) →3V only
Volume Key Yes
Voice Key Yes
I/O Connect 24 Pin
Basic Accessory Travel Adaptor / Battery / Ear Phone + Mic Data Cable
Option N/A
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2. PERFORMANCE
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Function Target Specification
RSSI (5 Level)
Battery Charging (5 Level)
Display RTC
Multi-Language (English, French, German, Spanish, Dutch, etc.)
Quick Access Mode(HOT KEY)
PLMN/Service Indicator
Number of Keys : 24 Key (including Soft key, side key)
Keypad Soft Function Keys : 2
International Access (+)(long 0)
HotKey : OK,
Normal Features Last Dialled Number : 20
Last Received Number : 20
Last Missed Number : 10
Scratch Pad Memory(Save a phone number in call) : 1
Call Waiting
Call Swap
Call Retrieve
Any Key Answer
Auto Answer
Closed User Group
Call Management Automatic Redial
Calling Line Identification
Full Call divert
Speed Dialling
Last Number Redial
Multi-party Call (Conference Call)
Explicit Call Transfer
Voice Recording Voice Recording in idle (15 Sec/10 message)
Automatic Network Selection
Network Manual Network Selection
Network Service Status
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2. PERFORMANCE
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Read Cell Broadcast
Cell Broadcast Cell Broadcast Categories
Cell Broadcast Message Language
Number Store and Recall
Alpha Store and Recall
Search the Phone Book in call
Scroll by alpha or number
Last Number Dialled (20)
Phone Book
Last Number Missed (10)
Last Number Received (20)
Copy & Move
Fixed Dial Number
Service Dial Number
Email Entry
Entry : 200 names
Last Call Timer
Last Call Charge Units
Call Cost Total Call Timer
Total Charge Units
Visible, Audible Call Time/Cost Indication
Key tone setting
Key / Ring Tone Volume (5 Level)
Ring Tone Pattern 20(fixed) + My Folder Ring tone 24(Default)
Audio Ring Type:
Silent / Vibrator & Ring / Ring only / Vibrator only/Ring after Vibrator
Earpiece Volume (5 Level)
Mute
DTMF DTMF Signalling
DTMF Enable & Disable
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