176.3. Self-Diagnostic Error Code TableSelf-Diagnostic Function (Refer Section 6.4. Self-Diagnostic Mode) provides information on any problems occurring for the unit andits respective components by displaying the error codes. These error code such as U**, H** and F** are stored in memory and heldunless it is cleared.The error code is automatically display after entering into self-diagnostic mode.6.3.1. Power Supply Error Code Table6.3.2. Bluetooth Error Code TableFL DisplayKey OperationFront KeyItemDescriptionMode NameError Code F61Power Amp IC output abnormal.Upon power on, PCONT=HIGH,DC_DET_AMP after checking LSI.Error Code F76Power Amp IC output abnormal.DC_DET_PWR.Press [ ] on main unitfor next error.Press [ ] on main unitfor next error.Diagnosis Contents:Diagnosis Contents:Solution(PCB exchange repair)Check following:1. Fan Unit2. SMPS P.C.B.3. Speaker ConnectionCheck supply voltageson Main P.C.B.Solution(PCB exchange repair)FL DisplayKey OperationFront KeyItemDescriptionMode NameError CodeF703Diagnosis Contents:Bluetooth Communication.Communication betweenBluetooth module andmicro-p abnormal.Error Code F77 Diagnosis Contents:Bluetooth Address ErrorIf there is no valid Bluetoothaddress stored in theEEPROM IC.Press [ ] on main unitfor next error.Press [ ] on main unitfor next error.Check following:1. Bluetooth P.C.B.2. SOC IC on MainP.C.B.Check following:1. EEPROM IC(IC1004) on MainP.C.B.