Service Manuals, User Guides, Schematic Diagrams or docs for : LG Mobile Phone LG G7100 LG G7100
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Table Of Contents
1. INTRODUCTION...................................5 4. TROUBLE SHOOTING ................... 53
1.1 Purpose ................................................ 5 4.1 RF Components ................................. 53
1.2 Regulatory Information .......................... 5 4.2 Rx Trouble .......................................... 54
1.3 Abbreviations ......................................... 7 4.3 Tx Trouble .......................................... 63
4.4 Power On Trouble .............................. 73
4.5 Charging Trouble ............................... 76
2. PERFORMANCE ..................................9 4.6 LCD Trouble ....................................... 78
2.1 H/W Feature .......................................... 9 4.7 Receiver Trouble ................................ 80
2.2 Technical Specification .......................... 11 4.8 Speaker Trouble ................................. 82
4.9 MIC Trouble ....................................... 84
4.10 Vibrator Trouble ............................... 87
3. TECHNICAL BRIEF ............................16 4.11 Key Backlight LED Trouble .............. 89
4.12 Folder on/off Trouble .................... 91
3.1 General Description of RF parts ........... 16 4.13 SIM Detect Trouble .......................... 93
3.2 Receiver Part ....................................... 16 4.14 Earphone Trouble ............................ 95
3.3 Synthesizer Part .............................. 19 4.15 HFK Trouble ..................................... 100
3.4 Transmitter Part .................................... 20 4.16 CAMERA Trouble ........................ 106
3.5 13 MHz Clock ....................................... 23
3.6 Power Supplies and Control Signals .....24
5. DISASSEMBLY INSTRUCTION .... 110
3.7 Digital Main Processor .......................... 25
3.8 Analog Main Processor ......................... 30 5.1 Disassembly ....................................... 110
3.9 Power Management IC ......................... 36
3.10 Memories ........................................... . 39
6. DOWNLOAD AND
3.11 Display and Interface ......................... . 40 CALIBRATION ................................ 118
3.12 Keypad Switches and Scanning ........ . 40
6.1 Download ........................................... 118
3.13 Microphone ........................................ . 42
6.2 Calibration .......................................... 125
3.14 Earpiece .......................................... 43
3.15 Hands-free Interface ....................... 43
3.16 Headset Jack Interface ....................... 43 7. BLOCK DIAGRAM ........................... 128
3.17 Key Back-light Illumination .................. 46
3.18 LCD Back-light Illumination ...............47
3.19 Speaker & MIDI IC .............................. 48
3.20 CAMERA IC .................................. 49
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8. CIRCUIT DIAGRAM ......................... 129 13. EXPLODED VIEW &
REPLACEMENT PART LIST ....... 149
8.1 MAIN .................................................. 129
8.2 Memory & MMI & PMIC .................... 130 13.1 Exploded View ................................. 149
8.3 MMI ................................................... 131 13.2 Accessory ....................................... 151
8.4 Audio ................................................ 132 13.3 Replacement Parts
8.5 Camera ....................................... 133 < Mechanic component > ................. 152
8.6 RF Circuit .................................... 134 Replacement Parts
< Main component > ...................... 155
9. PCB LAYOUT .................................. 135
10. ENGINEERING MODE .................. 137
10.1 BB Test [MENU 1] ........................... 138
10.2 RF Test [MENU 2] ........................... 140
10.3 MF mode [MENU 3] ......................... 141
10.4 Trace option [MENU 4] .................... 142
10.5 Call timer [MENU 5] ........................ 142
10.6 Fact. Reset [MENU 6] ......................142
10.7 S/W version [MENU 7] .....................142
11. STAND ALONE TEST ................... 143
11.1 Introduction ...................................... 143
11.2 Setting Method ................................ 143
11.3 Means of Test .................................. 144
12. AUTO CALIBRATION ................... 146
12.1 Overview .......................................... 146
12.2 Requirements .................................. 146
12.3 Menu and Settings ........................... 146
12.4 AGC ......................................... 148
12.5 APC .......................................... 148
12.6 ADC ..........................................148
12.7 Setting .......................................148
12.8 How to do calibration ....................... 148
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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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