Table Of Contents - LG VX8610 Service Manual

VX8610
General Introduction..............................3
CHAPTER 1. System Introduction.......................4
1. CDMA Abstract......................................4
2. Features and Advantages of CDMA Mobile Phone............................5
3. Structure and Functions of Dual-band CDMA Mobile Phone................... ........8
4. Specification................................9
5. Installation..............................14
CHPATER 2. NAM Input Method.....................................................................16
1. NAM Program Method and Telephone Number Inputting Method..................16
CHAPTER 3. Circuit Description..........................................................26
1. RF Transmit/Receive Part.................................26
2. Digital/Voice Processing Part..................................32
CHAPTER 4. Trouble Shooting...........................................35
1. RX Part Trouble Shooting........................................................35
1.1 DCN RX............................35
1.1.1 Checking DC Power supply circui(PMIC).......................................36
1.1.2 Checking VCTCXO circuit...............................................38
1.1.3 Checking Control signal........................................40
1.1.4 Checking RF signal path (Mobile S/W, Diplexer, Duplexer)......................42
1.1.5 Checking Rx I/Q data..........................................45
1.2 PCS Rx............................................................................47
1.2.1 Checking DC Power supply circuit (PMIC)...............................48
1.2.2 Checking VCTCXO circuit....................................50
1.2.3 Checking Control signal.............................................52
1.2.4 Checking RF signal path (Mobile S/W, Diplexer, Duplexer)............54
1.2.5 Checking Rx I/Q data.............................57
2. TX Part Trouble Shooting....................................59
2.1 DCN TX..................................................59
2.1.1 Checking DC Power supply circuit (PMIC)..........................60
2.1.2 Checking VCTCXO circuit........................62
2.1.3 Checking RFT6150 circuit.......................64
2.1.4 Check DCN RF Tx SAW...........................67
2.1.5 Check DCN PAM circuit.....................................68
2.1.6 Check DCN Duplexer...............................70
2.1.7 Check Diplexer.....................................71
2.1.8 Check Mobile S/W.........................72
2.2 PCS TX..............................................73
2.2.1 Checking DC Power supply circuit (PMIC)....................74
2.2.2 Checking VCTCXO circuit..............................................76
2.2.3 Checking RFT6150 circuit........................................78
2.2.4 Check PCS RF Tx SAW...................................81
2.2.5 Check PCS PAM circuit.............................82
2.2.7 Check Diplexer..........................84
2.2.6 Check PCS Duplexer..........................85
2.2.8 Check Mobile S/W........................................86
3. Logic Part Trouble Shooting..............................87
3.1 Power.........................87
3.2 LCD................................91
3.3 Camera............................93
3.4 Audio...................................95
3.5 Backlight.............................107
3.6 Vibrator...............................111
CHAPTER 5. Safety.................................113
CHAPTER 6. Glossary..............................116
APPENDIX...............................................128
Copyright © 2007 LG Electronics. Inc. All right reserved
Only for training and service purposes

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