LG Electronics LG-C320 service manual Table Of Contents

Table Of Contents

1. INTRODUCTION	5
1.1 Purpose	5
1.2 Regulatory Information	5
1.3 Abbreviations	7
2. PERFORMANCE	9
2.1 Product Name	9
2.2 Supporting Standard	9
2.3 Main Parts : GSM Solution	9
2.4 HW Features	10
2.5 SW Features	12
2.6 HW SPEC	14
2.7 C320 Figures	15
3. TECHNICAL BRIEF	16
3.1 General Description	16
3.2 Power management	28
3.3 SUB SYSTEM	32
3.4 General Description (RF Part)	40
3.5 GSM MODE	41
3.6 OFF-CHIP RF COMPONENTS	44
3.7 OFF-CHIP COMPONENTS	46
4. TROUBLE SHOOTING	50
4.1 Power ON Troubleshooting	50
4.2 Charger Troubleshooting	52
4.3 USB Troubleshooting	54
4.4 USIM Detect Troubleshooting	56
4.5 Camera Troubleshooting	58
4.6 Main side view LED Troubleshooting	60
4.7 Slide Key side view LED Troubleshooting	61
4.8 LCD Troubleshooting	63
4.9 Vibrator Troubleshooting	65
4.10 Receiver Path	67
4.11 Headset path	70

4.12 Speaker/Speaker Phone path	73
4.13 Main microphone	78
4.14 Headset microphone	80
4.15 RF Component	82
4.16 RF Path	83
4.17 Trouble Shooting of GSM Part	84
4.18 Checking Bluetooth Block	91
4.19 Checking FM Radio Block	96
5. DOWNLOAD	99
6. BLOCK DIAGRAM	112
7. CIRCUIT DIAGRAM	123
8. BGA Pin Map	137
9. PCB LAYOUT	143
10. RF CALIBRATION	149
10.1 Usage of Tachyon for RF Calibration and Test	149
11. TEST ALONE	152
11.1 Phone Test Mode	152
12. EXPLODED VIEW & REPLACEMENT PART LIST	157
11.1 EXPLODED VIEW	157
11.2 Replacement Parts	159
11.3 Accessory	175

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