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LG KF350 Service Manual
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12. EXPLODED VIEW & REPLACEMENT P
ART LIST
12.1 EXPLODED VIEW
LGE Internal Use Only
Copyright ©
2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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Table of Contents
Default Chapter
4
Table of Contents
4
1 Introduction
6
Purpose
6
Regulatory Information
6
Abbreviation
8
2 General Performance
10
H/W Features
10
Technical Specification
11
3 Technical Brief
18
Baseband Processor (BBP) Introduction
18
General Description
19
Block Description
19
Power Management IC
31
Power ON/OFF
36
SIM & Usd Interface
37
Memory
39
LCD Display
40
Keypad Switching & Scanning
41
Keypad Back-Light Illumination
42
LCD Back-Light Illumination
43
Alc
45
JTAG & ETM Interface Connector
45
Audio
46
Charging Circuit
47
FM Radio & BLUETOOTH
48
18Pin Multi Media Interface Connector
51
Rf Circuit Technical Brief
53
Rf Block Diagram
53
General Description
54
Receiver Part
56
Transmitter Part
57
RF Synthesizer
58
Dcxo
58
Front End Module Control
59
Power Amplifier Module
60
Mode Selection
61
PAM Schematic
62
4 Trouble Shooting
63
Trouble Shooting Test Setup
63
Power on Trouble
64
Charging Trouble
67
LCD Display Trouble
69
Camera Troublez
71
Receiver & Speaker Troublea
73
Microphone Trouble
76
Vibrator Trouble
78
Keypad Back Light Trouble
80
SIM & Usd Trouble
82
Photo Senser Trouble
85
Sideview LED Trouble
86
Trouble Shooting of Receiver Part
87
Trouble Shooting of Transmitter Part
93
Checking Vctcxo Circuit
94
Checking Pll Control Signal
94
5 Download & S/W Upgrade
102
6 Block Diagram
113
7 Circuit Diagram
114
8 Bga Pin Map
122
9 Pcb Layout
128
Main Pcb Component Placement
138
10 Rf Calibration
142
Test Equipment Setup
142
Calibration Step
142
11 Stand-Alone Test
148
Test Program Setting
148
Tx Test
150
Rx Test
151
12 Exploded View & Replacement Part List
152
Exploded View
152
Replacement Parts
154
Mechanic Component
154
Main Component
159
Accessory
173
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LG KF350 Specifications
General
Brand
LG
Model
KF350
Category
Cell Phone
Language
English
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