Table Of Contents - LG GM360i Service Manual

1. INTRODUCTION ..................................................................5
1.1 Purpose ............................................................................................... 5
1.2 Regulatory Information ............................................................... 5
1. Abbreviations ................................................................................... 7
2. PERFORMANCE ...................................................................9
2.1 H/W Features .................................................................................... 9
2.2 Technical Specification ...............................................................10
3. TECHNICAL BRIEF .............................................................16
.1 GM60i Functional Block diagram. .......................................16
.2 Baseband Processor (BBP) Introduction..............................17
. Power management IC ..............................................................0
.4 Power ON/OFF ...............................................................................5
.5 SIM & uSD interface .....................................................................7
.6 Memory ............................................................................................9
.7 LCD Display .....................................................................................40
.8 Keypad Switching & Scanning ................................................41
.9 Keypad back-light illumination ..............................................42
.10 LCD back-light illumination ...................................................44
.11 Audio ...............................................................................................45
.12 Audio amplifier & Microphone .............................................46
.1 Charging circuit ..........................................................................48
.14 FM radio & BLUETOOTH & WLAN .........................................49
.15 5pin u-USB Interface connector...........................................52
.16 General Description ..................................................................55
.17 Receiver part ................................................................................57
.18 Transmitter part ..........................................................................58
.19 RF synthesizer ..............................................................................59
.20 Front End Module control ......................................................59
.21 Power Amplifier Module .........................................................60
.22 PAM Schematic ...........................................................................61
4. TROUBLE SHOOTING .......................................................62
4.1 Trouble shooting test setup .....................................................62
4.2 Power on Trouble ..........................................................................6
4. Charging trouble ..........................................................................66
4.4 LCD display trouble .....................................................................68
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Table Of Contents

4.5 Camera Trouble .............................................................................70
4.6 Receiver & Speaker trouble ......................................................72
4.7 Microphone trouble ....................................................................75
4.8 Vibrator trouble .............................................................................77
4.9 Keypad back light trouble .........................................................79
4.10 SIM & uSD trouble ......................................................................81
4.11 Touch trouble...............................................................................84
4.12 Trouble shooting of Receiver part .......................................86
4.1 Trouble shooting of Transmitter part. ................................92
5. DOWNLOAD & S/W UPGRADE...................................... 101
6. BLOCK DIAGRAM ........................................................... 114
7. CIRCUIT DIAGRAM ........................................................ 115
8. BGA Pin Map .................................................................. 123
9. PCB LAYOUT ................................................................... 131
10. RF CALIBRATION ......................................................... 135
10.1 Test Equipment Setup ........................................................... 15
10.2 Calibration Step ....................................................................... 15
11. STAND ALONE TEST .................................................... 140
11.1 est Program Setting ............................................................... 140
11.2 x Test ............................................................................................. 14
11. Rx Test .......................................................................................... 145
12. EXPLODED VIEW & REPLACEMENT
PART LIST .................................................................... 147
12.1 EXPLODED VIEW ...................................................................... 147
12.2 Replacement Parts.................................................................. 149
12. Accessory ................................................................................... 168
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