Service Manuals, User Guides, Schematic Diagrams or docs for : LG Mobile Phone LG MG295, MG296, KG296 LG MG295, MG296, KG296
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Service Manual
Internal Use Only
Service Manual
MG295/MG296/KG296
Model : MG295/MG296/KG296
Date: October, 2007 / Issue 1.0
Table Of Contents
1. INTRODUCTION ...............................5 4.17 Micro SD Trouble .................................79
1.1 Purpose .................................................. 5 4.18 Bluetooth & FM Radio Trouble.............81
1.2 Regulatory Information............................ 5
1.3 Abbreviations .......................................... 7 5. DOWNLOAD.......................................84
2. PERFORMANCE...............................9 5.1 Download ...............................................84
2.1 H/W Features...........................................9 6. CIRCUIT DIAGRAM ........................91
2.2 Technical Specification ..........................10
7. BGA IC Pin Check ........................101
3. TECHNICAL BRIEF ........................15
3.1 Power Amplifier (SKY77318, U502).......15 8. PCB LAYOUT ................................105
3.2 Transceiver (AD6548, U503) .................17
3.3 FEM for Triband(FL501) ........................19 9. BLOCK DIAGRAM ........................109
3.4 26 MHz Clock (Crystal, X501)................20
3.5 Baseband Processor (AD6721 , U103)..21 10. ENGINEERING MODE ................110
3.6 Display and Interface .............................27 10.1 BB Test [MENU 1]..............................111
3.7 Camera Interface(AIT813G , U402).......29 10.2 RF Test [MENU 2]..............................113
3.8 Keypad Switches and Scanning ............31 10.3 MF mode [MENU 3] ...........................113
3.9 Microphone ............................................32 10.4 Trace option [MENU 4] ......................114
3.10 Main Speaker.......................................33 10.5 Call timer [MENU 5] ...........................114
3.11 Headset Interface.................................34 10.6 Fact. Reset [MENU 6] ........................114
3.12 Key Back-light Illumination...................35 10.7 S/W version........................................114
3.13 LCD Back-light Illumination..................36
3.14 VIBRATOR...........................................36 11. STAND ALONE TEST .................115
3.15 BLUETOOTH & FM Radio 11.1 Introduction ........................................115
(BCM2048, U600) ................................37 11.2 Setting Method...................................115
3.16 Battery Charging ..................................38 11.3 Means of Test ....................................116
4. TROUBLE SHOOTING ...................39 12. AUTO CALIBRATION..................118
4.1 RF Component.......................................39 12.1 Overview ............................................118
4.2 RX Trouble.............................................40 12.2 Equipment List ...................................118
4.3 TX Trouble .............................................45 12.3 Test Jig Operation..............................119
4.4 Power On Trouble..................................51 12.4 Procedure ..........................................120
4.5 Charging Trouble ...................................53 12.5 AGC ...................................................122
4.6 Vibrator Trouble .....................................55 12.6 APC....................................................122
4.7 LCD Trouble...........................................57 12.7 ADC ...................................................122
4.8 Camera Trouble .....................................60
4.9 Speaker Trouble ....................................63 13. EXPLODED VIEW &
4.10 SIM Card Interface Trouble..................65 REPLACEMENT PART LIST ..... 123
4.11 Earphone Trouble ................................67 13.1 Exploded View .................................. 123
4.12 KEY backlight Trouble .........................69 13.2 Replacement Parts ............................125
4.13 Receiver Trouble..................................71 13.3 Accessory ......................................... 144
4.14 Microphone Trouble .............................73
4.15 RTC Trouble ........................................75
4.16 Folder on/off Trouble............................77
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