Micromax Ninja A91 Service Manual Download Page 27 | Manualshive

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a. Checking 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.

27

7. Earphone

Repairing guide

earphone

All manuals and user guides at all-guides.com

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Summary of Contents for Ninja A91

Page 1: ...1 A91 L1 L2 service manual All manuals and user guides at all guides com a l l g u i d e s c o m...

Page 2: ...2 content 1 Product introduce p3 p4 2 Disassembly guide p5 p19 3 Structure parts diagram p20 p21 4 Repairing guide p22 p32 All manuals and user guides at all guides com...

Page 3: ...3 Product introduce All manuals and user guides at all guides com...

Page 4: ...SIM WCDMA 2100MHz GSM900 1800 1900 MHZ Battery 1800mAh charger Travel charger USB cable MICRO 5PIN earphone 3 5jack LCD TP 4 5FWVGA TN resolution 480 854 Capacitance TP multi point touch 2 point Camer...

Page 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 All manuals and user guides at all guides com...

Page 6: ...6 2 Battery caver disassembly open the battery cover as the Fig 1 Fig 1 Disassembly guide Battery cover All manuals and user guides at all guides com a l l g u i d e s c o m...

Page 7: ...7 3 Back caver disassembly 1 Unscrew 10 screws in back cover as the Fig 2 Fig 2 Disassembly guide All manuals and user guides at all guides com...

Page 8: ...8 Fig 3 2 Disassemble back cover with Tommy bar as the Fig 3 Disassembly guide Back cover SPK All manuals and user guides at all guides com...

Page 9: ...1 The main components of distribution as the fig 4 Fig 4 Disassembly guide Sub PCBA RF cable SIM con LCD con TP con Earphone con USB con 5 0M CAM Main PCBA T card con Battery con Main FPC vibrator All...

Page 10: ...2 remove two screws and open the volume key FPC LCD con TP con as the fig 5 10 Fig 5 Disassembly guide LCDcon TPcon Volume key FPC All manuals and user guides at all guides com...

Page 11: ...remove the power key FPC and RF cable con and 5M camera as the FIG 6 11 Fig 6 Disassembly guide Power key FPC RF cable con 5M camera All manuals and user guides at all guides com a l l g u i d e s c o...

Page 12: ...4 open the main board And main FPC con as the FIG 7 12 Fig 7 Disassembly guide Main FPC con Main board All manuals and user guides at all guides com...

Page 13: ...nd 0 3M camera as the fig 8 13 5 0 3M camera light sensor disassembly Fig 8 Disassembly guide Light sensor con Light sensor holder Sensor holder Light sensor 0 3M cam 0 3M cam CON All manuals and user...

Page 14: ...6 Power key FPC volume key FPC disassembly remove the power key FPC and volume key FPC with the iron as the fig 9 Disassembly guide Power key FPC Volume key FPC All manuals and user guides at all gui...

Page 15: ...15 Fig 10 remove the receiver and speaker as the FIG 10 7 5M camera receiver disassembly Disassembly guide receiver speaker All manuals and user guides at all guides com...

Page 16: ...16 Fig 11 8 RF cable disassembly remove the sub PCBA from the as the fig 11 Disassembly guide RF cable Main FPC Sub PCBA All manuals and user guides at all guides com a l l g u i d e s c o m...

Page 17: ...17 Fig 12 9 Sub PCBA disassembly Remove the RF cable and main FPC as the fig 12 Disassembly guide vibrator Main FPC CON RF cable CON MIC CON All manuals and user guides at all guides com...

Page 18: ...18 Fig 13 10 MIC Main FPC vibrator disassembly Remove the vibrator MIC as the fig 13 Disassembly guide MIC vibrator All manuals and user guides at all guides com...

Page 19: ...19 Structure parts diagram Back cover Battery cover 3in1 module LCD TP front cover All manuals and user guides at all guides com...

Page 20: ...rts diagram Main PCBA 5M camera receiver SPK Light sensor FPC RF cable Sensor holder Main FPC 0 3M camera sub PCBA MIC Volume key FPC Power key FPC Volume key Power key All manuals and user guides at...

Page 21: ...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 one e Checking the circuit around th...

Page 22: ...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 around the camera connector...

Page 23: ...e 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 connector Repairing guide T...

Page 24: ...s 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 Repairing guide Main FPC CON Speaker C...

Page 25: ...ecking 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 circuit if is ok Repairing g...

Page 26: ...ng re solder it b Change the MIC and Vibrator c Checking the circuit of MIC and Vibrator d Checking the FPC if connect ok 26 6 MIC and Vibrator Repairing guide MIC CON Vibrator All manuals and user gu...

Page 27: ...e 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 27 7 Earphone Repairing guide earphone All manuals...

Page 28: ...cking 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 28 8 No Power On Repairing guide All manuals and user guides at all guides...

Page 29: ...age 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 29 9 No charging Repairing guide USB Connector All manuals and user guide...

Page 30: ...tor of T card and SIM card b Change the connector of T card and SIM card 30 10 No SIM card and No memory card Repairing guide SIM Connector 1 SIM Connector 2 T card connector All manuals and user guid...

Page 31: ...ecking RF line if that is broken b Checking RF line assemble if is ok 31 11 Signal Repairing guide RF connector Sub board RF connector All manuals and user guides at all guides com a l l g u i d e s c...

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