U8650-NFC Maintenance Manual Basic Version V1.0
Huawei confidential. No spreading without permission.
Contents
1 PRODUCT INTRODUCTION................................................................................................................................5
1.1 PRODUCTAPPEARANCE.....................................................................................................................................5
1.2 PRODUCT SPECIFICATIONS................................................................................................................................5
2 MAINTENANCE INFORMATION GUIDE.........................................................................................................7
2.1 DOCUMENTAPPLICATION...................................................................................................................................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.......................................................................................................................................15
5.1 PREPARATION FOR UPGRADE .........................................................................................................................15
5.2 UPGRADE PROCESS..........................................................................................................................................15
5.3 FORCE DOWNLOAD...........................................................................................................................................17
5.4 CHECK THE FIRMWARE VERSION...................................................................................................................18
5.5 ERROR HANDLING .............................................................................................................................................18
6 MAINTENANCE TOOLS......................................................................................................................................19
7 DISASSEMBLY PROCEDURE..........................................................................................................................21
8 ASSEMBLY PROCEDURE..................................................................................................................................25
9 TROUBLE SHOOTINGS OF COMMON FAULTS.......................................................................................29
9.1 PRINCIPLE INSTRUCTION..................................................................................................................................29
9.2 NO POWER ON...................................................................................................................................................30
9.2.1 High Current (DC power supply).....................................................................................................................30
9.2.2 Low Current (DC power supply)......................................................................................................................32
9.3 CHARGE FAILURE...............................................................................................................................................34
9.4 SIMCARD FAILURE...........................................................................................................................................35
9.5 SD CARD FAILURE.............................................................................................................................................36
9.6 VIBRATION FAILURE...........................................................................................................................................37
9.7 DISPLAY FAILURE...............................................................................................................................................38
9.8TOUCH PANEL FAILURE.....................................................................................................................................39
9.9 CAMERA FAILURE...............................................................................................................................................40
9.10AUDIO MALFUNCTION .....................................................................................................................................41
9.10.1 No Ring Tone..........................................................................................................................................................41
9.10.2 Receiver Failure....................................................................................................................................................42
9.10.3 Voice Transmitting Failure...............................................................................................................................43
9.10.4 Earphone No Voice.............................................................................................................................................43
9.10.5 Earphone Can‟t Transmit Voice ....................................................................................................................44
9.11 WIFI&BTFAILURE...........................................................................................................................................45
9.12 FM FAILURE......................................................................................................................................................46
9.13 GPS FAILURE...................................................................................................................................................47
9.14 NFC FAILURE...................................................................................................................................................48
9.15 PROXIMITY FAILURE........................................................................................................................................49
9.16 RF FAILURE......................................................................................................................................................50
9.16.1 RF Receiving Failure-WCDMA 2100MHz................................................................................................50
9.16.2 RF Receiving Failure-WCDMA 900MHz..................................................................................................52
9.16.3 RF Receiving Failure-GSM 900&1800&1900MHz..............................................................................53
9.16.4 RF Transmitting Failure-WCDMA 2100MHz..........................................................................................54
