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KS20 - Smartphone 128 MB
LG KS20 - Smartphone 128 MB User Manual
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LGE Internal Use Only
Copyright ©
2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
1
3
Table of Contents
Default Chapter
1
Table of Contents
1
1 Introduction
3
Purpose
3
Regulatory Information
3
2 Performance
5
System Overview
5
Usable Environment
6
Radio Performance
6
Current Consumption
12
Rssi Bar
12
Battery BAR
13
Sound Pressure Level
14
Charging
14
3 Technical Brief
15
General Description
15
GSM Mode
17
Gsm Transmitter
20
UMTS Mode
21
LO Generation and Distribution Circuits
23
Off-Chip RF Components
23
Digital Baseband(DBB/MSM7200)
33
Hardware Architecture
35
Subsystem(Msm7200)
37
Wideband Codec
38
Vocoder Subsystem
38
Power Block
40
External Memory Interface
45
H/W Sub System
47
Msm Sub System
49
Key Pad
51
Power Button
51
End Button
53
Camera Interface
55
Audio and Sound
63
Main Features
74
4 Trouble Shooting
80
RF Component
80
Bottom Side
81
Signal Path_Umts Rf
83
Signal Path_Gsm Rf
84
Checking VCTCXO Block
85
Checking Front-End Module Block
87
Checking UMTS Block
89
Checking GSM Block
94
Checking Rf Tx Level
95
Checking Pam Block
97
Checking Rf Rx Block
98
Checking Bluetooth Block
100
Checking WLAN Block
103
Power on Troubleshooting
107
Charger Troubleshooting
110
USB Troubleshooting
113
SIM Detect Troubleshooting
115
Camera Troubleshooting
117
Vga Camera
118
Keypad Backlight Troubleshooting
120
Main LCD Troubleshooting
121
Receiver Path
122
Headset Path
124
Speaker Phone Path
126
Main Microphone
128
Headset Microphone
130
Vibrator
132
5 Download
134
Ks20 Download
134
Connecting to Pc
136
Troubleshooting Download Errors
143
6 Block Diagram
146
GSM & UMTS RF Block
146
Interface Diagram
148
7 Circuit Diagram
151
8 Bga IC Pin Map
161
Pcb Layout
167
9 Calibration & RF Auto Test Program (Hot Kimchi)
175
Configuration of HOT KIMCHI
175
How to Use HOT KIMCHI
178
10 Phone Test Mode
181
Phone KS20
181
11 Exploded View & Replacement Part List
189
Replacement Parts
189
Mechanic Component
189
Main Component
191
Accessory
207
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LG KS20 - Smartphone 128 MB Specifications
General
Brand
LG
Model
KS20 - Smartphone 128 MB
Category
Cell Phone
Language
English
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