LG GB210 - Default Chapter; Table of Contents

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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
1.3 Abbreviations .............................................................. 7
2. PERFORMANCE ............................................... 9
2.1 H/W Features .............................................................. 9
2.2 Technical Specifi cation (GB210).................................. 11
3. TECHNICAL BRIEF ......................................... 15
3.1 SKY77518 TX–RX iPAC™ FEM for Dual-Band
GSM/GPRS (SKY77518, U500) ..................................15
3.2 Transceiver (AD6548, U501) ...................................... 17
3.3 26 MHz Clock (Crystal, X500) ..................................... 19
3.4 BT Module with integrated FM tuner(BC5-FM, U200) ... 20
3.5 Baseband Processor (AD6726, U103) ......................... 21
3.6 Display and Interface ................................................. 27
3.7 Camera Interface(AIT716 , U400) ............................... 29
3.8 Keypad Switches and Scanning .................................. 32
3.9 Microphone ............................................................... 33
3.10 Main Speaker .......................................................... 34
3.11 Headset Interface .................................................... 35
3.12 Key Back-light Illumination ....................................... 36
3.13 LCD Back-light Illumination ...................................... 37
3.14 VIBRATOR ............................................................... 38
3.15 Battery Charging ..................................................... 39
4. TROUBLE SHOOTING ..................................... 40
4.1 RF Component .......................................................... 40
4.2 RX Trouble ................................................................ 41
4.3 TX Trouble ................................................................. 46
4.4 Bluetooth + FM Radio ................................................ 52
4.5 Power On Trouble ...................................................... 55
4.6 Charging Trouble ....................................................... 57
4.7 Vibrator Trouble ......................................................... 60
4.8 LCD Trouble .............................................................. 62
4.9 Camera Trouble ......................................................... 65
4.10 Speaker Trouble ...................................................... 68
4.11 SIM Card Interface Trouble ....................................... 70
4.12 Earphone Trouble ..................................................... 72
4.13 KEY backlight Trouble .............................................. 74
4.14 Receiver Trouble ...................................................... 76
4.15 Microphone Trouble ................................................. 78
4.16 RTC Trouble ............................................................ 80
4.17 Micro SD Trouble ..................................................... 82
5. Download ..................................................... 84
5.1 Download.................................................................. 84
6. BLOCK DIAGRAM .......................................... 90
7. CIRCUIT DIAGRAM ........................................ 91
8. BGA Pin Map ................................................ 97
9. PCB LAYOUT ............................................... 101
10. STAND ALONE TEST.................................. 103
10.1 Introduction ........................................................... 103
10.2 Setting Method ...................................................... 103
10.3 Means of Test ........................................................ 104
11. AUTO CALIBRATION .................................. 106
11.1 Overview ............................................................... 106
11.2 Equipment List ...................................................... 106
11.3 Test Jig Operation .................................................. 107
11.4 Procedure ............................................................. 108
11.5 AGC ...................................................................... 110
11.6 APC ...................................................................... 110
11.7 ADC ...................................................................... 110
12. EXPLODED VIEW & REPLACEMENT
PART LIST ................................................. 111
12.1 EXPLODED VIEW ................................................... 111
12.2 Replacement Parts ................................................ 113
12.3 Accessory ............................................................. 129