Service Manuals, User Guides, Schematic Diagrams or docs for : LG Mobile Phone LG KF300 LG KF300
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Service Manual
Service Manual
KF300
Model : KF300
Date: February, 2008 / Issue 1.0
Table Of Contents
1. INTRODUCTION ........................... 5 4.14 KEY backlight Trouble .........................97
1.1 Purpose .................................................. 5 4.15 RTC Trouble ........................................99
1.2 Regulatory Information............................ 5 4.16 Folder on/off Trouble..........................101
1.3 Abbreviations .......................................... 7 4.17 Micro SD Trouble ...............................103
4.18 Bluetooth Trouble...............................105
2. SYSTEM SPECIFICATION............... 9 4.19 FM Radio Trouble ..............................107
2.1 H/W Features.......................................... 9
5. DOWNLOAD.....................................109
2.2 Technical Specification ......................... 10
5.1 Download .............................................109
3. TECHNICAL BRIEF ....................... 15
6. BLOCK DIAGRAM ........................116
3.1 Digital Main Processor(AD6900, U101). 15
3.2 Analog Main Processor(AD6855, U100) 18 7. CIRCUIT DIAGRAM ......................117
3.3 Power Amplifier Module(SKY77318, U601)
.............................................................. 25 8. BGA IC Pin Check ........................127
3.4 FEM (DGM1110M014, FL601) ............. 26
3.5 RTC(FC-135, X100).............................. 27 9. PCB LAYOUT ................................133
3.6 Crystal(26 MHz, X601).......................... 28
3.7 RF Tranceiver(AD6548, U602) ..............30 10. ENGINEERING MODE ................139
3.8 MEMORY(PF38F5060M0Y0BE, U202)..36 10.1 BB Test [MENU 1]..............................140
3.9 BT Module with integrated FM tuner 10.2 RF Test [MENU 2]..............................142
(EWFMLBAXX, U201) ...........................39
10.3 MF mode [MENU 3] ...........................142
3.10 SIM Card Interface...............................41
10.4 Trace option [MENU 4] ......................143
3.11 Micro-SD Card Interface ......................42
10.5 Call timer [MENU 5] ...........................143
3.12 LCD Interface.......................................43
10.6 Fact. Reset [MENU 6] ........................143
3.13 Battery Charger Interface.....................46
10.7 S/W version........................................143
3.14 Keypad Interface..................................47
3.15 Audio Interface.....................................49 11. STAND ALONE TEST .................144
3.16 Camera Interface 11.1 Introduction ........................................144
(2M Fixed Focus Camera) ...................56
11.2 Setting Method...................................144
3.17 KEY BACLKLIGHT LED Interface .......59
11.3 Means of Test ....................................145
3.18 Vibrator Interface .................................60
12. AUTO CALIBRATION .................147
4. TROUBLE SHOOTING ...................61
12.1 Overview ............................................147
4.1 RF Component.......................................61
12.2 Equipment List ...................................147
4.2 RX Trouble.............................................62
12.3 Test Jig Operation..............................148
4.3 TX Trouble .............................................67
12.4 Procedure ..........................................149
4.4 Power On Trouble..................................73
12.5 AGC ...................................................151
4.5 Charging Trouble ...................................75
12.6 APC....................................................151
4.6 Vibrator Trouble .....................................77
12.7 ADC ...................................................151
4.7 LCD Trouble...........................................79
4.8 Camera Trouble .....................................83 13. EXPLODED VIEW &
4.9 Speaker Trouble ....................................87 REPLACEMENT PART LIST ..... 153
4.10 Earphone Trouble ................................89 13.1 Exploded View .................................. 153
4.11 Receiver Trouble..................................91
13.2 Replacement Parts ............................155
4.12 Microphone Trouble .............................93
13.3 Accessory ......................................... 168
4.13 SIM Card Interface Trouble..................95
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