- -
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Table Of Contents
1. INTRODUCTION ...............................................5
1.1 Purpose ......................................................................5
1.2 Regulatory Information .................................................5
2. PERFORMANCE ...............................................7
2.1 Product Name .............................................................7
2.2 Supporting Standard ....................................................7
2. Main Parts : GSM Solution ...........................................7
2.4 HW Features ..............................................................8
2.5 SW Features .............................................................10
2.6 HW SPEC. .................................................................12
3. TECHNICAL BRIEF .........................................16
.1 GENERAL DESCRIPTION .............................................16
.2 GSM MODE ...............................................................17
. UMTS MODE .............................................................21
.4 OFF-CHIP RF COMPONENTS ......................................26
.5 OFF-CHIP COMPONENTS ...........................................29
.6 General Description ...................................................
.7 Power management ..................................................45
.8 SUB SYSTEM ............................................................50
4. TROUBLE SHOOTING .....................................59
4.1 RF Component ..........................................................59
4.2 RF Path ....................................................................61
4. Trouble Shooting of GSM Part (GSM900/1800/1900) ..6
4.4 Trouble Shooting of WCDMA part ................................71
4.5 Checking Bluetooth Block ..........................................77
4.6 Checking FM Radio Block ..........................................82
4.7 Power ON Troubleshooting .........................................85
4.8 Charger Troubleshooting ............................................88
4.9 USB Troubleshooting ..................................................89
4.10 USIM Detect Troubleshooting ....................................90
4.11 Camera Troubleshooting ..........................................9
4.12 Main side view LED Troubleshooting .........................95
4.1 Slide Key side view LED Troubleshooting ...................97
4.14 LCD Troubleshooting ................................................99
4.15 Vibrator Troubleshooting .........................................101
4.16 Receiver Path ........................................................102
4.17 Headset path.........................................................105
4.18 Speaker phone path ..............................................107
4.19 Main microphone ..................................................110
4.20 Headset microphone ..............................................112
5. Download ...................................................114
5.1 Introduction .............................................................114
5.2 Downloading Procedure ...........................................115
5. Troubleshooting Download Errors ..............................11
5.4 Caution ...................................................................16
6. Block Diagram ...........................................137
7. CIRCUIT DIAGRAM ......................................147
8. BGA Pin Map ..............................................161
9. PCB LAYOUT ...............................................167
10. Calibration ................................................177
11. Test Mode .................................................180
12. EXPLODED VIEW & REPLACEMENT
PART LIST ................................................189
12.1 EXPLODED VIEW ...................................................189
12.2 Replacement Parts ................................................191
12. Accessory ............................................................. 215