LG KU580 Service Manual - Page 2

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Table of Contents 1. INTRODUCTION 5 1.1 Purpose 5 1.2 Regulatory Information 5 2. PERFORMANCE 7 2.1 System Overview 7 2.2 Usable environment 8 2.3 Radio Performance 8 2.4 Current Consumption 16 2.5 RSSI BAR 16 2.6 Battery Bar 17 2.7 Sound Pressure Level 18 2.8 Charging 19 3. Technical Brief 20 3.1 Digital Baseband(DBB) & Multimedia Processor 20 3.2 GAM Hardware Subsystem 41 3.3 Audio Part 51 3.4 GPADC(General Purpose ADC) and AUTOADC2 59 3.5 Charger control 60 3.6 Voltage Regulation 66 3.7 RF Technical Description 67 4. TROUBLE SHOOTING 78 4.1 Power ON Trouble 78 4.2 USB Trouble 79 4.3 SIM Detect Trouble 80 4.4 MicroSD card Trouble 81 4.5 Keypad And Touch key Trouble 82 4.6 Camera Trouble 85 4.7 Main LCD Trouble 89 4.8 Keypad Backlight Trouble 91 4.9 Folder ON/OFF Trouble 93 4.10 Audio Trouble Shooting 95 4.11 Charger Trouble Shooting 110 4.12 Checking Bluetooth Block 113 4.13 RF Component 117 4.14 Procedure to check 118 4.15 Checking Common Power Source Block 119 4.16 Checking VCXO Block 124 4.17 Checking Front End Module Block.....129 4.18 Checking Front End Module Block input logic 130 4.19 Checking WCDMA Block 133 4.20 Checking GSM Block 145 5. KU580 Download Setup Manual 157 6. BLOCK DIAGRAM 164 6.1 GSM & WCDMA RF Block 164 7. CIRCUIT DIAGRAM 167 8. PCB LAYOUT 175 9. CALIBRATION 181 9.1 General Description 181 10. EXPLODED VIEW & REPLACEMENT PART LIST ......187 10.1 EXPLODED VIEW 187 10.2 Replacement Parts 189

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- 3 -
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc.
All right reserved.
Only for training and service purposes
1. INTRODUCTION
..............................
5
1.1 Purpose
...................................................
5
1.2 Regulatory Information
............................
5
2. PERFORMANCE
..............................
7
2.1 System Overview
....................................
7
2.2 Usable environment
................................
8
2.3 Radio Performance
.................................
8
2.4 Current Consumption
............................
16
2.5 RSSI BAR
.............................................
16
2.6 Battery Bar
............................................
17
2.7 Sound Pressure Level
...........................
18
2.8 Charging
...............................................
19
3. Technical Brief
..............................
20
3.1 Digital Baseband(DBB) & Multimedia
Processor
..............................................
20
3.2 GAM Hardware Subsystem
...................
41
3.3 Audio Part
..............................................
51
3.4 GPADC(General Purpose ADC) and
AUTOADC2
...........................................
59
3.5 Charger control
......................................
60
3.6 Voltage Regulation
.................................
66
3.7 RF Technical Description
.......................
67
4. TROUBLE SHOOTING
...................
78
4.1 Power ON Trouble
.................................
78
4.2 USB Trouble
..........................................
79
4.3 SIM Detect Trouble
................................
80
4.4 MicroSD card Trouble
............................
81
4.5 Keypad And Touch key Trouble
.............
82
4.6 Camera Trouble
.....................................
85
4.7 Main LCD Trouble
..................................
89
4.8 Keypad Backlight Trouble
......................
91
4.9 Folder ON/OFF Trouble
.........................
93
4.10 Audio Trouble Shooting
.......................
95
4.11 Charger Trouble Shooting
..................
110
4.12 Checking Bluetooth Block
..................
113
4.13 RF Component
...................................
117
4.14 Procedure to check
............................
118
4.15 Checking Common Power Source
Block
..................................................
119
4.16 Checking VCXO Block
.......................
124
4.17 Checking Front End Module Block
.....
129
4.18 Checking Front End Module Block
input logic
...........................................
130
4.19 Checking WCDMA Block
...................
133
4.20 Checking GSM Block
.........................
145
5. KU580 Download Setup Manual
157
6. BLOCK DIAGRAM
.......................
164
6.1 GSM & WCDMA RF Block
...................
164
7. CIRCUIT DIAGRAM
.....................
167
8. PCB LAYOUT
................................
175
9. CALIBRATION
..............................
181
9.1 General Description
.............................
181
10. EXPLODED VIEW &
REPLACEMENT PART LIST
......
187
10.1 EXPLODED VIEW
.............................
187
10.2 Replacement Parts
............................
189
<Mechanic component>
....................
189
<Main component>
............................
193
10.3 Accessory
.........................................
208
Table of Contents