Yamaha RX 397 MCXSP10 Manual - Page 31

TROUBLESHOOTING TROUBLESHOOTING Refer to the chart below if this unit does not function properly. If the problem you are experiencing is not listed below or if the instructions below do not help, set this unit to the standby mode, disconnect the power cord, and contact the nearest authorized YAMAHA dealer or service center. ■ General Problem Cause Remedy This unit fails to turn The power supply cord is not connected or Connect the power supply cord firmly. on. the plug is not completely inserted. The impedance setting is incorrect. Set the impedance to match your speakers. The protection circuitry has been activated Check that the speaker wires are not touching each because of a short circuit, etc. other and then turn the power of this unit back on. The IMPEDANCE SELECTOR switch on Set the IMPEDANCE SELECTOR switch to either the rear panel is not set to either end. end when the power of this unit is turned off. This unit has been exposed to a strong external electric shock (such as lightning or strong static electricity). Set this unit to the standby mode, disconnect the power supply cord, plug it back in after 30 seconds, then use it normally. No sound Incorrect input or output cable connections. Connect the cables properly. If the problem persists, the cables may be defective. No appropriate input source has been selected. Select an appropriate input source with the INPUT selector on the front panel (or one of the input selector buttons on the remote control). The TAPE MONITOR function is turned Turn off the TAPE MONITOR function. on. The SPEAKERS A/B switches are not set Turn on the corresponding SPEAKERS A or properly. SPEAKERS B. Speaker connections are not secure. Secure the connections. The sound suddenly goes off. The protection circuitry has been activated Check that the IMPEDANCE SELECTOR setting is because of a short circuit, etc. correct. Check that the speaker wires are not touching each other and then turn the power of this unit back on. Only the speaker on one side can be heard. Incorrect cable connections. Incorrect setting for the BALANCE control. Connect the cables properly. If the problem persists, the cables may be defective. Set the BALANCE control to the appropriate position. There is a lack of bass The + and - wires are connected in and no ambience. reverse at the amplifier or the speakers. Connect the speaker wires to the correct + and - phase. A "humming" sound Incorrect cable connections. can be heard. Connect the audio plugs firmly. If the problem persists, the cables may be defective. No connection from the turntable to the GND terminal. Make the GND connection between the turntable and this unit. The volume level is low while playing a record. The record is being played on a turntable The turntable should be connected to this unit through with an MC cartridge. the MC head amplifier. The volume level cannot be increased, or the sound is distorted. The component connected to the TAPE OUT or the MD OUT jacks of this unit is turned off. Turn on the power of the component. See page - 13 10 13 - 9 15 3 15 10 13 10 9 16 10 9 9 - - ADDITIONAL INFORMATION 27