FAQ of Module:

　1.Soldering Problems: Please check the circuit board carefully, to see that if short circuit, leaks solders, solders emptily or contrary to soldered the component.

　2.Power Problems: Please check the main test point, the voltage of PM firstly, then check the solder of the peripheral circuit.

　3.CPU & FLASH Problems: Confirm the power and solder has no problem firstly, then check the circuit solders emptily, leaks solders or short circuit.

　4.Connector Problems: Please check the Row Line is in normal.

　5.Serial Port Problems: If the serial port will be obstructed, check it step by step. Using the serial port to download software to repair if the module works, or using the TRACE to download software. Then check the serial port circuit.

　FAQ of PCBA:

　1.Booting Failure: To judge which problem, software, hardware or LCD.

　2.Motor Vibration Failure: If the motor is OK, then check the motor solder, FPC and connector.

　3.Voice Call Failure: Please check the MIC and RECEVER, and then check the solder line and RF circuit step by step.

　4.Ringtone Failure: Please check the SPEAKER line whether short circuit or solders emptily. Then check the audio frequency player.

　5.UIM Detection failure: Please check the soldering of the UIM socket.