Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
8.9 Installing Bluetooth and GPS Supports..........................................................................................................34
8.10 Installing the Front Camera to the Main Board............................................................................................34
8.11 Installing the Receiver and Pasting a Protective Film ..................................................................................35
8.12 Installing the Main Board to the Front Cover ..............................................................................................35
8.13 Installing the Rear Camera to the Front Cover.............................................................................................36
8.14 Installing the Coaxial Line to the Front Cover.............................................................................................37
8.15 Installing and Screwing the SPK Support ....................................................................................................37
8.16 Installing and Pressing the Battery...............................................................................................................38
8.17 Installing and Screwing the Shielding Cover ...............................................................................................38
8.18 Installing and Screwing the Rear Cover.......................................................................................................39
9 Troubleshooting Common Problems......................................................................................40
9.1 Architecture Introduction ...............................................................................................................................40
9.2 Power-On Failure...........................................................................................................................................46
9.2.1 Large Current (DC Power Supply)........................................................................................................46
9.2.2 Low Current (DC Power Supply) .........................................................................................................47
9.2.3 No Current (DC Power Supply)............................................................................................................49
9.3 Charging Failure.............................................................................................................................................50
9.4 Display Failure...............................................................................................................................................52
9.5 Vibration Failure ............................................................................................................................................53
9.6 microSD Card Identification Failure..............................................................................................................54
9.7 USIM Card Identification Failure ..................................................................................................................55
9.8 TP Failure.......................................................................................................................................................55
9.9 Touch Key Failure..........................................................................................................................................57
9.10 Proximity Sensor and Auto Light Sensor Failure.........................................................................................58
9.11 Acceleration Sensor Failure..........................................................................................................................58
9.12 Compass Sensor Failure...............................................................................................................................59
9.13 Camera Failure.............................................................................................................................................60
9.14 Audio Failure................................................................................................................................................60
9.14.1 Speaker Failure ...................................................................................................................................60
9.14.2 MIC Failure.........................................................................................................................................61
9.14.3 Receiver Failure..................................................................................................................................62
9.15 Headset Failure.............................................................................................................................................63
9.15.1 Headset Silence................................................................................................... 错误！未定义书签。
9.15.2 No Transmission Through Headset.....................................................................................................64
9.16 Wi-Fi/Bluetooth Failure ...............................................................................................................................65
9.17 FM Failure....................................................................................................................................................66
9.18 GPS Failure..................................................................................................................................................67
9.19 MHL Failure.................................................................................................................................................68
9.20 WCDMA RF Receiving Failure...................................................................................................................69
9.21 WCDMA RF Transmitting Failure...............................................................................................................71
9.22 GSM RF Receiving Failure..........................................................................................................................73
