cromax P310 Service Manual Download Page 23

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P310

L2 Service Manual

10. No SIM card and no memory card



Check the connector of T –card and SIM card;



Change the connector of T –card and SIM card;

Thanks

For any questions or suggestions please email to [email protected]

SIM

Summary of Contents for P310

Page 1: ...P310 L2 Service Manual...

Page 2: ...uad 1 0GHz Memory 4GB 1GB Nand sdram RAM System Android 4 1 2 Frequency band Dual SIM WCDMA 900 2100MHz GSM 900 1800 MHZ Battery 2800mAh Charger Travel charger USB cable MICRO 5PIN Earphone 3 5jack LC...

Page 3: ...P310 L2 Service Manual 1 Tools list I Tweezer Cross II Screw driver III Solder IV Tommy bar V Hot gun...

Page 4: ...P310 L2 Service Manual 2 Cover Plate disassembly Open the cover plate as the Fig 1 FIG 1 COVER PLATE...

Page 5: ...P310 L2 Service Manual 3 Back case disassembly Insert tommy bar into the gap between middle frame and back case then slide it slowly along the gap as the Fig 2 FIG 2...

Page 6: ...anual 4 Disassemble battery speaker mic motor First remove battery with soldering iron Then remove the four screws as shown in the fig 3 to disassemble speaker holder and antenna holder FIG 3 FIRST RE...

Page 7: ...P310 L2 Service Manual 5 Tear off conduction tape and high temp tape as the Fig 4 FIG 4...

Page 8: ...P310 L2 Service Manual 6 The main components distribution as the fig 5 FIG 5 TOUCH IC CPU DDR PMU FLASH WIFI BT MODEL...

Page 9: ...P310 L2 Service Manual 7 Remove the three screws and open the LCD con TP con as the fig 6 FIG 6 TF CON LCD CON...

Page 10: ...P310 L2 Service Manual 8 Remove main board from case as the FIG 7 FIG 7...

Page 11: ...P310 L2 Service Manual 9 Remove camera as the FIG 8 FIG 8 CAM...

Page 12: ...P310 L2 Service Manual 10 Receiver disassembling as the fig 9 FIG 9 RECEIVER...

Page 13: ...P310 L2 Service Manual 11 Exploded view MIC MOTOR CAM SPK RECEIVER PCBA COVER PLATE HOLDER HOLDER BACK CASE MIDDLE FRAME BATTERY LCD...

Page 14: ...is correct otherwise to upgrade the SW Check the LCD is ok otherwise change a new LCD Ifthe LCD loose re assemble the LCD and test Checking the LCD connector is ok otherwise re solder it or change a n...

Page 15: ...ly otherwise re assemble the camera and test Cross test with a good camera and check the camera is ok Check the camera connector is ok as shown in the below picture otherwise re solder or change a new...

Page 16: ...the SW is correct otherwise to upgrade the SW Check the FPC of TP is correct otherwise re assemble it Cross test with a good TP Check the TP connector is correct otherwise re solder or change a new on...

Page 17: ...L2 Service Manual 4 Ringer Check the shrapnel of speaker is ok Check the resistance of speaker is ok otherwise to change a new one Check the FPC is ok Check SPK FPC connector with sub board is ok SPE...

Page 18: ...Receiver Check the shrapnel of receiver is ok Check the resistance of receiver is ok otherwise change a new one Check the connector point on the main board is ok as shown in the below picture Check th...

Page 19: ...ice Manual 6 MIC and Vibrator Check the MIC and Vibrator is cold soldering otherwise re solder it Change the MIC and Vibrator Check the circuit of MIC and Vibrator Check the FPC is connect correctly M...

Page 20: ...vice Manual 7 Earphone Check the shrapnel of earphone is ok Check the connector point on the main board is ok as shown in the below picture Change earphone connector Check the circuit of earphone is O...

Page 21: ...P310 L2 Service Manual 8 No Power On Dead Check the voltage of battery is 3 8 4 2V and connect correctly Upgrade the SW Check power on key and the circuit around it POWER BUTTON...

Page 22: ...P310 L2 Service Manual 9 No Charging Checkthe voltage of battery is over 3 4V Check the charger and USB cable is ok Check the USB connector and circuit is ok USB CONNECTOR...

Page 23: ...anual 10 No SIM card and no memory card Check the connector of T card and SIM card Change the connector of T card and SIM card Thanks For any questions or suggestions please email to tech help microma...