Service Manuals, User Guides, Schematic Diagrams or docs for : LG Mobile Phone LG C3380 LG C3380 1
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Service Manual
Service Manual
C3380
Model : C3380
Date: November, 2005 / Issue 1.0
Table Of Contents
1. INTRODUCTION .............................. 5 4.15 Indication LED Trouble ........................92
1.1 Purpose .................................................. 5 4.16 Folder on/off Trouble............................94
1.2 Regulatory Information............................ 5 4.17 Bluetooth Trouble.................................96
1.3 Abbreviations .......................................... 7 5. DOWNLOAD AND CALIBRATION.. 100
2. PERFORMANCE.............................. 9 5.1 Download ............................................ 100
2.1 H/W Features.......................................... 9 5.2 Calibration............................................106
2.2 Technical Specification ......................... 10 6. BLOCK DIAGRAM ...................... 109
3. TECHNICAL BRIEF ...................... 16
7. CIRCUIT DIAGRAM ..................... 111
3.1 Transceiver ........................................... 16
3.2 Power Amplifier Module ....................... 21 8. PCB LAYOUT ............................... 117
3.3 26 MHz Clock........................................ 22
3.4 Power Supplies for RF Circuits ............. 23 9. ENGINEERING MODE ..................119
3.5 Digital Main Processor .......................... 24 9.1 BB Test [MENU 1]................................120
3.6 Analog Main & Power Management 9.2 RF Test [MENU 2]................................122
Processor.................................................. 30 9.3 MF mode [MENU 3] .............................122
3.7 Display and Interface ............................ 40 9.4 Trace option [MENU 4] ........................123
3.8 Camera Interface .................................. 42 9.5 Call timer [MENU 5] .............................123
3.9 Keypad Switches and Scanning ........... 44 9.6 Fact. Reset [MENU 6] ..........................123
3.10 Microphone ......................................... 45 9.7 S/W version..........................................123
3.11 Main Speaker...................................... 45
3.12 Headset Interface................................ 46 10. STAND ALONE TEST .................124
3.13 Key Back-light Illumination.................. 47 10.1 Introduction ........................................124
3.14 LCD Back-light Illumination................. 48 10.2 Setting Method...................................124
3.15 VIBRATOR.......................................... 49 10.3 Means of Test ....................................125
3.16 BLUETOOTH .......................................50
11. AUTO CALIBRATION..................127
4. TROUBLE SHOOTING ................. 52 11.1 Overview ............................................127
4.1 RX Trouble............................................ 52 11.2 Requirements.....................................127
4.2 TX Trouble ............................................ 60 11.3 Menu and Settings .............................127
4.3 Power On Trouble................................. 68 11.4 AGC ...................................................129
4.4 Charging Trouble ...................................70 11.5 APC....................................................129
4.5 Vibrator Trouble .....................................72 11.6 ADC ...................................................129
4.6 LCD Trouble...........................................74 11.7 Setting................................................129
4.7 Camera Trouble .....................................76 11.8 How to do calibration .........................129
4.8 Speaker Trouble ....................................78
4.9 SIM Card Interface Trouble....................80 12. EXPLODED VIEW &
4.10 Earphone Trouble ................................82 REPLACEMENT PART LIST ..... 131
4.11 KEY backlight Trouble .........................84 12.1 Exploded View .................................. 131
4.12 Receiver Trouble .................................86 12.2 Replacement Parts ............................133
4.13 Microphone Trouble .............................88 12.3 Accessory ......................................... 150
4.14 RTC Trouble ........................................90
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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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