Service Manuals, User Guides, Schematic Diagrams or docs for : LG TEL KG800 KG800_SVC_EN
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Service Manual
Service Manual
KG800
Model : KG800
Date: July, 2006 / Issue 1.0
Table Of Contents
1. INTRODUCTION ...............................5 4.13 Microphone Trouble .............................94
1.1 Purpose .................................................. 5 4.14 RTC Trouble ........................................96
1.2 Regulatory Information............................ 5 4.15 Navigation KEY Problem .....................98
1.3 Abbreviations .......................................... 7 4.16 Slider Detection..................................100
4.17 Camera ..............................................102
2. PERFORMANCE...............................9 4.18 Flash Trouble .....................................105
2.1 H/W Features...........................................9 4.19 Multimedia MIC ..................................107
2.2 Technical Specification ..........................10 4.20 USB....................................................109
3. TECHNICAL BRIEF ........................15 5. DOWNLOAD .....................................111
3.1 Power Transceiver ................................15
6. BLOCK DIAGRAM ........................117
3.2 13 MHz Clock.........................................22
3.3 Switchplexer for Triband ........................22 7. Circuit Diagram ............................119
3.4 Digital Main Processor ...........................24
3.5 Analog Main & Power Management 8. pcb layout .....................................132
Processor...............................................30
3.6 Charging IC............................................37 9. ENGINEERING MODE ..................147
3.7 CAMERA IC ...........................................40
9.1 BB Test [MENU 1]................................148
3.8 MIDI IC...................................................42
9.2 RF Test [MENU 2]................................150
3.9 Keypad Switches and Scanning ............46
9.3 MF mode [MENU 3] .............................150
3.10 Microphone ..........................................47
9.4 Trace option [MENU 4] ........................151
3.11 Main Speaker.......................................47
9.5 Call timer [MENU 5] .............................151
3.12 IO Interface ......................................... 48
9.6 Fact. Reset [MENU 6] ..........................151
3.13 EL DRIVER IC .....................................49
9.7 S/W version..........................................151
3.14 MEMORY.............................................50
3.15 BLUETOOTH .......................................51 10. STAND ALONE TEST .................152
3.16 LCD BACKLIGHT, FLASH LED 10.1 Introduction ........................................152
CHARGE PUMP ..................................52
10.2 Setting Method...................................152
3.17 SLIDE SWITCH (U205) .......................53
10.3 Means of Test ....................................153
3.18 VIBRATOR...........................................54
3.19 MULTIMEDIA MIC ...............................55 11. CALIBRATION.............................155
4. TROUBLESHOOTING ....................56 12. EXPLODED VIEW &
4.1 RX Trouble.............................................56 REPLACEMENT PART LIST ..... 163
4.2 TX Trouble .............................................62 12.1 Exploded View .................................. 163
4.3 Power On Trouble..................................69
12.2 Replacement Parts ............................165
4.4 Charging Trouble ...................................71
12.3 Accessory ......................................... 185
4.5 Vibrator Trouble .....................................73
4.6 LCD Trouble.......................................... 75
4.7 BT Trouble .............................................78
4.8 Speaker Trouble ....................................81
4.9 SIM Card Interface Trouble....................84
4.10 Earphone Trouble ................................86
4.11 EL Trouble ...........................................89
4.12 Receiver Trouble..................................91
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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 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.
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1. INTRODUCTION
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:
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