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1. INTRODUCTION .............................. 5
1.1 Purpose................................................... 5
1.2 Regulatory Information............................ 5
2. PERFORMANCE...............................7
2.1 Supporting Standard ................................7
2.2 Main Parts : Solution................................7
2.3 HW Features............................................8
2.4 HW SPEC. .............................................10
3. TECHNICAL BRIEF ........................14
3.1 General Description ...............................14
3.2 GSM Mode.............................................16
3.3 UMTS Mode...........................................19
3.4 LO generation and distribution circuits...21
3.5 Off-chip RF Components .......................22
3.6 Digital Baseband (DBB/MSM6280)........32
3.7 Subsystem(MSM6280) ..........................34
3.8 Power Block ...........................................43
3.9 External memory interface .....................48
3.10 H/W Sub System..................................50
3.11 Feature List ..........................................61
3.12 Touch Screen Interface........................66
4. TROUBLE SHOOTING ...................67
4.1 Power on trouble....................................67
4.2 USB trouble............................................69
4.3 SIM detect trouble..................................70
4.4 Key sense trouble (KEYPAD) ................71
4.5 Keypad backlight trouble........................74
4.6 Micro SD trouble ....................................75
4.7 Audio trouble..........................................76
4.8 Camera trouble ......................................91
4.9 Main LCD trouble ...................................97
4.10 Bluetooth trouble................................100
4.11 Touch Screen trouble.........................102
4.12 RF Component...................................104
4.13 SIGNAL PATH ...................................105
4.14 Checking VCTCXO Block ..................107
4.15 Checking Front-End Module Block ....109
4.16 Checking UMTS Block .......................110
4.17 Checking GSM Block .........................118
5. DOWNLOAD .................................124
5.1 Introduction ..........................................124
5.2 Downloading Procedure.......................124
5.3 Troubleshooting Download Errors .......138
5.4 Caution.................................................140
6. BLOCK DIAGRAM ........................141
6.1 GSM & UMTS RF Block.......................141
6.2 Interface Diagram ................................143
7. Circuit Diagram ............................145
8. BGM Pin Map................................153
9. PCB LAYOUT ................................159
10. CALIBRATION & RF AUTO TEST
(HOT KIMCHI) .............................165
10.1 Usage of Hot-Kimchi ..........................165
11. EXPLODED VIEW &
REPLACEMENT PART LIST ......169
11.1 EXPLODED VIEW .............................169
11.2 Replacement Parts
<Mechanic component>.....................171
<Main component> ............................175
11.3 Accessory ..........................................193
Table Of Contents
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Содержание KF700
Страница 1: ...Service Manual Model KF700 Service Manual KF700 Date May 2008 Issue 1 1 Internal Use Only ...
Страница 157: ... 158 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...
Страница 167: ... 168 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...
Страница 193: ...Note ...
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