LG -- W5200.pdf

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SERVICE MANUAL
MODEL : G5200 / W5200
GSM Phone
SERVICE MANUAL
MODEL : G5200/W5200
P/N : MMBD0015801
JUNE, 2002
Table Of Contents
1. INTRODUCTION
.......................................
4
1.1 Purpose ..................................................4
1.2 Regulatory Information .......................... 4
A. Security ..............................................4
B. Incidence of Harm ..............................4
C. Changes in Service ............................4
D. Maintenance Limitations ....................4
E. Notice of Radiated Emissions .............5
F. Pictures ..............................................5
G. Interference and Attenuation .............5
H. Electrostatic Sensitive Devices ..........5
1.3 Abbreviations ......................................... 6
3.10 Display and Interfaces ........................28
3.11 Keypad Switches and Scanning ..........29
3.12 Microphone .........................................30
3.13 Earpiece ............................................. 31
3.14 Hands-free Interface .......................... 32
3.15 Headset Jack Interface .......................32
3.16 Key Back-light Illumination ..................32
3.17 LCD Back-light Illumination ................ 33
3.18 Multi-Color LED Illumination .............. 33
3.19 Speaker & MIDI IC ............................. 34
4. TROUBLE SHOOTING
.....................
35
4.1 RF Components ................................. 35
4.2 Tx Trouble .......................................... 44
4.3 Power on Trouble ............................... 60
4.4 Charging Trouble ............................... 62
4.5 LCD Trouble ....................................... 64
4.6 Receiver Trouble . ............................... 66
4.7 Speaker Trouble ................................. 69
4.8 Mic Trouble ..........................................72
4.9 Vibrator Trouble ................................. 75
4.10 Backlight Trouble ............................. 77
4.11 Folder on/off Trouble ........................ 79
4.12 SIM Detect Trouble .......................... 81
4.13 Earphone Trouble ............................ 83
4.14 HFK Trouble ..................................... 87
2. PERFORMANCE
.....................................
8
2.1 H/W Feature ...........................................8
2.2 Technical Specification .......................... 9
3. TECHNICAL BRIEF
............................
13
3.1 General Descreption ............................ 13
3.2 Receiver ............................................... 13
A. RF front end .....................................14
B. Demodulator and
baseband processing ...................... 14
C. DC Offset Compensation ................ 14
3.3 Transmitter Part ................................... 15
A. IF Modulator .................................... 15
B. OPLL ............................................... 16
C. Synthesizer ......................................16
D. TX APC Part ....................................17
E. Power Amplifier ................................17
3.4 13 MHz Clock ...................................... 18
3.5 Power Supplies and Control Signals ....18
3.6 Digital Main Processor ......................... 19
3.7 Analog Main Processor ........................ 24
3.8 Power Management ..............................26
3.9 Memories ..............................................28
5. ASSEMBLY INSTRUCTION
............ 95
5.1 Disassembly ....................................... 95
6. DOWNLOAD
....................................... 102
6.1 Download Setup ............................... 102
6.2 Download Procedure ........................ 103
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7. BLOCK DIAGRAM
............................. 106
7.1 Main Board ....................................... 106
7.2 FPCB ................................................ 107
7.3 RF .................................................... 107
12. AUTO CALIBRATION
................... 121
12.1
12.2
12.3
12.4
12.5
12.6
12.7
12.8
Overview ....................................... 121
Requirements ............................... 121
Menu and settings ........................ 121
AGC .............................................. 123
APC .............................................. 123
ADC .............................................. 123
Setting .......................................... 123
How to do calibration .................... 123
8. CIRCUIT DIAGRAM
........................... 109
8.1
8.2
8.3
8.4
Baseband Interface .......................... 109
MIDI .................................................. 110
KYE, I/F & LCD CON ....................... 111
RF .................................................... 112
9. PCB LAYOUT
..................................... 113
10. ENGINEERING MODE
.................. 115
10.1
10.2
10.3
10.4
10.5
10.6
10.7
BB Test [MENU 1] ........................ 115
RF Test [MENU 2] ........................ 117
MF Mode [MENU 3] ...................... 118
Trace option [MENU 4] ................. 119
Call Timer [MENU 5] ..................... 119
Fact. Reset [MENU 6] ................... 119
S/W version [MENU 7] .................. 119
13. EXPLODED VIEW &
REPLACEMENT PART LIST
...... 124
13.1 Exploded View .............................. 124
13.2 Accessories .................................. 126
13.3 Replacement Part List .................. 127
11. STAND ALONE TEST
................... 120
11.1 Introduction ................................... 120
11.2 Setting Method ............................. 120
11.3 Means of Test ............................... 120
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REVISED HISTORY
DATE
APRIL/2002
ISSUE
ISSUE 1
CONTENTS OF CHANGES
Initial Release
S/W VERSION
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
G5200.
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1. INTRODUCTION
1. INTRODUCTION
1.1 Purpose
This manual provides the information necessary to repair, calibration, description and download the
features of the G5200.
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 G5200 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 the G5200 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.
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