Contents
1 PRODUCT INTRODUCTION................................................................................................................................5
1.1 PRODUCTAPPEARANCE.....................................................................................................................................5
1.2 PRODUCT SPECIFICATIONS................................................................................................................................5
2 MAINTENANCE INFORMATION GUIDE .........................................................................................................7
2.1 DOCUMENT APPLICATION...................................................................................................................................7
2.2 MAINTENANCE PRECAUTIONS...........................................................................................................................7
2.3 OBTAINING MAINTENANCE INFORMATION .......................................................................................................7
3 EXPLOSIVE VIEW OF PRODUCT.....................................................................................................................8
4 LOCATION OF COMPONENTS ON THE MAIN BOARD.........................................................................10
5 SOFTWARE UPGRADE.......................................................................................................................................17
5.1 PREPARATION FOR UPGRADE .........................................................................................................................17
5.2 UPGRADE PROCESS..........................................................................................................................................17
5.3 FORCE DOWNLOAD...........................................................................................................................................19
5.4 CHECK THE FIRMWARE VERSION ...................................................................................................................20
5.5 ERROR HANDLING .............................................................................................................................................20
6 MAINTENANCE TOOLS......................................................................................................................................21
7 DISASSEMBLY PROCEDURE..........................................................................................................................23
8 ASSEMBLY PROCEDURE..................................................................................................................................28
9 TROUBLE SHOOTINGS OF COMMON FAULTS.......................................................................................32
9.1 PRINCIPLE INSTRUCTION..................................................................................................................................32
9.2 NO POWER ON...................................................................................................................................................33
9.2.1 High Current (DC power supply).....................................................................................................................33
9.2.2 Low Current (DC power supply)......................................................................................................................35
9.3 CHARGE FAILURE...............................................................................................................................................37
9.4 KEYBOARD FAILURE..........................................................................................................................................38
9.5 VIBRATION FAILURE...........................................................................................................................................39
9.6 SIM CARD FAILURE...........................................................................................................................................40
9.7 SD CARD FAILURE.............................................................................................................................................41
9.8 DISPLAY FAILURE...............................................................................................................................................42
9.9 TOUCH PANEL FAILURE.....................................................................................................................................43
9.10 CAMERA FAILURE ............................................................................................................................................44
9.11AUDIO FAILURE.................................................................................................................................................45
9.11.1 No Ring Tone..........................................................................................................................................................45
9.11.2 Voice Transmitting Failure................................................................................................................................46
9.11.3 Receiver Failure....................................................................................................................................................47
9.11.4 Earphone No Voice .............................................................................................................................................48
9.11.5 Earphone Can’t Transmit Voice.....................................................................................................................49
9.12 FM FAILURE......................................................................................................................................................50
9.13 WIFI FAILURE...................................................................................................................................................51
9.14 BT FAILURE.......................................................................................................................................................53
9.15 GPS FAILURE...................................................................................................................................................55
9.16 RF FAILURE......................................................................................................................................................57
9.16.1 RF Receiving Failure-WCDMA 2100MHz................................................................................................58
9.16.2 RF Receiving Failure-WCDMA 900MHz..................................................................................................59
9.16.3 RF Receiving Failure-GSM.............................................................................................................................60
9.16.4 RF Transmitting Failure-WCDMA 2100MHz ..........................................................................................61
