LG KG290, KG291 free download

File name LG KG290, KG291.pdf

Service Manual Internal Use Only Service Manual KG290/KG291 Model : KG290/KG291 Date: October, 2007 / Issue 1.0 Table Of Contents 1. INTRODUCTION ...5 5. DOWNLOAD...94 1.1 Purpose ... 5 5.1 Download ...94 1.2 Regulatory Information... 5 1.3 Abbreviations ... 7 6. BLOCK DIAGRAM ...100 2. PERFORMANCE...9 7. CIRCUIT DIAGRAM ...101 2.1 H/W Features...9 8. BGA IC Pin Check ...109 2.2 Technical Specification ...10 3. TECHNICAL BRIEF ...15 9. PCB LAYOUT ...113 3.1 Power Amplifier (SKY77318, U500)...15 10. ENGINEERING MODE ...117 3.2 Transceiver (AD6548, U501) ...17 10.1 BB Test [MENU 1]...118 3.3 FEM for Triband(FL500) ...19 10.2 RF Test [MENU 2]...120 3.4 26 26 MHz Clock (DCXO, X500) ...20 10.3 MF mode [MENU 3] ...120 3.5 Baseband Processor (AD6721 , U103)..21 10.4 Trace option [MENU 4] ...121 3.6 Battery Charging Block ...26 10.5 Call timer [MENU 5] ...121 3.7 Display and Interface ...28 10.6 Fact. Reset [MENU 6] ...121 3.8 Camera IC(AIT813G , U400) ...30 10.7 S/W version...121 3.9 Keypad Switches and Scanning ...32 3.10 Microphone ...