background image

14 

Fig.10 

8.  RF cable and Main FPC disassembly 

Remove the RF cable and Main FPC 

as the fig.10 

Disassembly guide 

RF cable   

Main FPC 

Содержание A74 L1

Страница 1: ...A74 L1 L2 service manual...

Страница 2: ...2 content 1 Product introduce p3 p4 2 Disassembly guide p5 p17 3 Structure parts diagram p18 4 Repairing guide p19 p29...

Страница 3: ...3 Product introduce...

Страница 4: ...RAM System Android 4 2 Frequency band WCDMA 2100 GSM 900 1800MHz Battery 1500mAh charger Travel charger USB cable MICRO 5PIN earphone 3 5jack LCD TP 4 5 FWVGA Capacitance TP Camera 0 3M and 5 0M CMOS...

Страница 5: ...5 Hot gun Tweezer Solder iron Tommy bar Cross Screw driver 1 Tools list Tweezer Cross screw driver Solder Tommy bar hot gun Disassembly guide...

Страница 6: ...6 2 Battery caver disassembly open the battery cover as the Fig 1 Fig 1 Disassembly guide Battery cover...

Страница 7: ...7 3 Back caver disassembly 1 Unscrew 12 screws in back cover as the Fig 2 Fig 2 Disassembly guide...

Страница 8: ...8 Fig 3 2 Disassemble back cover with Tommy bar as the Fig 3 Disassembly guide Back cover SPK...

Страница 9: ...over disassembly 1 The main components of distribution as the fig 4 Fig 4 Disassembly guide Main PCBA LCD con Front CAM con Back CAM USB con Earphoe con TP con T card con SIM con Main FPC Sub PCBA vib...

Страница 10: ...2 remove two screws and open the LCD con TP con and remove the volume key FPC power key FPC as the fig 5 10 Fig 5 Disassembly guide TPcon LCDcon...

Страница 11: ...3 open the main board and remove the RF cable con And main FPC con as the FIG 6 11 Fig 6 Disassembly guide RF cable con Main FPC con Main board...

Страница 12: ...remove the light sensor and camera as the fig 7 12 5 Front and Back camera light sensor disassembly Fig 7 Disassembly guide Back cam Front cam Light sensor holder Light sensor con...

Страница 13: ...13 Fig 9 remove the Speaker camera and receiver as the FIG 9 7 Speaker receiver disassembly Disassembly guide receiver...

Страница 14: ...14 Fig 10 8 RF cable and Main FPC disassembly Remove the RF cable and Main FPC as the fig 10 Disassembly guide RF cable Main FPC...

Страница 15: ...15 Fig 11 9 Sub PCBA disassembly remove the sub PCBA from the as the fig 11 Disassembly guide Sub PCBA vibrator...

Страница 16: ...16 Fig 12 10 MIC disassembly Remove the MIC as the fig 12 Disassembly guide MIC con...

Страница 17: ...17 Structure parts diagram 3in1 module LCD TP front cover Back cover Battery cover Main PCBA sub PCBA 5M camera 0 3M camera Main FPC Light sensor Sensor holder receiver SPK RF cable...

Страница 18: ...o upgrade the SW b Check the LCD if is ok otherwise change a new LCD c If that the LCD loose re assemble the LCD and test d Checking the LCD connector if is ok otherwise re solder it or change a new o...

Страница 19: ...sing the good camera to do cross test it can check if the camera is ok c Checking the camera connector if is ok as below picture otherwise to re solder or change a new one d Checking the circuit aroun...

Страница 20: ...de the SW b Checking the FPC of TP and re assemble it c Using the good TP to do cross test d Checking the TP connector otherwise re solder or change a new one e Checking the circuit around the TP conn...

Страница 21: ...hecking the shrapnel of speaker if is ok b Checking the resistance of speaker if is ok otherwise to change a new one c Checking the FPC if is ok d Checking SPK FPC if connector with sub board is ok Re...

Страница 22: ...nel of receiver if is ok b Checking the resistance of receiver if is ok otherwise to change a new one c Checking the connector point on the main board if is ok as below picture c Checking the receiver...

Страница 23: ...ing the MIC and Vibrator is cold soldering re solder it b Change the MIC and Vibrator c Checking the circuit of MIC and Vibrator d Checking the FPC if connect ok 23 6 MIC and Vibrator Repairing guide...

Страница 24: ...the shrapnel of earphone if is ok b Checking the connector point on the main board if is ok as below picture c Change earphone connector c Checking the circuit of earphone 24 7 Earphone Repairing guid...

Страница 25: ...a Checking the voltage of battery if is 3 8 4 2V and connect ok b Upgrade the SW b Checking the power on key and circuit around it 25 8 No Power On Repairing guide Power On...

Страница 26: ...a Checking the voltage of battery if is over 3 4V b Checking the charger and USB cable if is ok c Checking the USB connector and circuit if is ok 26 9 No charging Repairing guide USB Connector...

Страница 27: ...a Checking the connector of T card and SIM card b Change the connector of T card and SIM card 27 10 No SIM card and No memory card Repairing guide T card connector SIM Connector...

Страница 28: ...a Checking RF line if that is broken b Checking RF line assemble if is ok 28 11 Signal Repairing guide RF connector Sub board RF connector...

Страница 29: ...End Q A...

Отзывы: