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Internal Use Only
Service Manual
Service Manual
KF240
Model :KF240
Date: May, 2008 / Issue 1.0
Table Of Contents
1. INTRODUCTION .............................. 5 4.14 Slide key backlight Trouble ..................98
1.1 Purpose .................................................. 5 4.15 RTC Trouble ......................................101
1.2 Regulatory Information............................ 5 4.16 Folder on/off Trouble..........................103
1.3 Abbreviations .......................................... 7 4.17 6 Micro SD Trouble ............................105
4.18 Bluetooth Trouble...............................107
2. SYSTEM SPECIFICATION............... 9 4.19 FM Radio Trouble ..............................109
2.1 H/W Features.......................................... 9
5. DOWNLOAD .....................................111
2.2 Technical Specification ......................... 10
5.1 Download .............................................111
3. TECHNICAL BRIEF ....................... 15
6. BLOCK DIAGRAM ........................117
3.1 Digital Main Processor(AD6900, U101) 15
3.2 Analog Main Processor(AD6855, U100)18 7. CIRCUIT DIAGRAM ......................119
3.3 Power Amplifier Module
(SKY77318, U600)................................ 25 8. BGA IC Pin Check ........................129
3.4 FEM (DGM1110M014, FL600) ............. 26
3.5 RTC(FC-135, X100).............................. 27 9. PCB LAYOUT ................................133
3.6 Crystal(26 MHz, X600).......................... 28
3.7 RF Tranceiver(AD6548, U601) ..............30 10. ENGINEERING MODE ................139
3.8 MEMORY(PF38F5060M0Y0BE, U201).36 10.1 BB Test [MENU 1]..............................140
3.9 BT Module with integrated FM tuner 10.2 RF Test [MENU 2]..............................142
(EWFMLBAXX, U200) ...........................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(2M Fixed Focus 11.1 Introduction ........................................144
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/Receiver Trouble .....................87 REPLACEMENT PART LIST ......153
4.10 Earphone Trouble ................................90 13.1 Exploded View ...................................153
4.11 Microphone Trouble .............................92
13.2 Replacement Parts ............................155
4.12 SIM Card Interface Trouble..................94
13.3 Accessory ..........................................171
4.13 Main key backlight Trouble ..................96
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