Yamaha RX-396RDS Owner's Manual - Page 26
Troubleshooting - amplifier
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TROUBLESHOOTING If the unit fails to operate normally, check the following points to determine whether the fault can be corrected by the simple measures suggested. If it cannot be corrected, or if the fault is not listed in the SYMPTOM column, disconnect the power cord and contact your authorized YAMAHA dealer or service center for help. Amplifier SYMPTOM The unit fails to turn on when the STANDBY/ON switch is pressed, or turns into the standby mode suddenly soon after the power is turned on. It happens that this unit does not work normally. No sound. The sound suddenly goes off. Only one side speaker outputs the sound. There is a lack of bass, and no ambience. Sound "hums". Sound level is low. The volume level is low while playing a record. The volume level cannot be increased, or sound is distorted. FM stereo reception is noisy. There is distortion and clear reception cannot be obtained even with a good FM antenna. A desired station cannot be tuned in with the automatic tuning method. Previously preset stations can no longer be tuned in. A desired station cannot be tuned in with the automatic tuning method. There are continuous crackling and hissing noises. There are buzzing and whining noises (especially in the evening). The remote control transmitter does not work. The sound is degraded when listening with the headphones connected to the compact disc player or cassette deck that is connected with this unit. CAUSE Power cord is not plugged in or is not completely inserted. The IMPEDANCE SELECTOR switch on the rear panel is not set to either end. There is an influence of strong external noise (lightning, excessive static electricity, etc.) or a misoperation on this unit while using this unit. Incorrect output cord connections. Appropriate input source is not selected. The SPEAKERS switches are not set properly. Speaker connections are not secure. The protection circuit has been activated because of short circuit etc. The SLEEP timer has functioned. Incorrect setting of the BALANCE control. Incorrect cord connections. The + and - wires are connected in reverse to this unit or speakers. Incorrect cord connections. No connection from the turntable to the GND terminal. The LOUDNESS control is functioning. The record is being played on a turntable with an MC cartridge. The component connected to the REC terminals of this unit is turned off. Because of the characteristics of FM stereo broadcasts, this is limited to cases where the transmitter is too far away or the antenna input is poor. There is multipath interference. REMEDY Firmly plug in the power cord. Set the switch to either end when this unit is in the standby mode. Turn this unit into the standby mode and disconnect the AC power cord from the AC outlet. After about 30 seconds pass, connect the power and operate this unit again. Connect the cords properly. If the problem persists, the cords may be defective. Select an appropriate input source with the input selector buttons. Set the SPEAKERS switch which corresponds to the speakers to be used to the ON position. Secure the connections. Turn this unit into the standby mode, and then turn on to reset the protection circuit. Cancel the SLEEP timer function. Adjust it to the appropriate position. Connect the cords properly. If the problem persists, the cords may be defective. Connect the speaker wires in the correct phase (+ and -). Firmly connect the audio plugs. If the problem persists, the cords may be defective. Make the GND connection between the turntable and this unit. Set the LOUDNESS control to the FLAT position. The player should be connected to the unit through the MC head amplifier. Turn the power to the component on. Check the antenna connections. Try using a high quality directional FM antenna. Set the TUNING MODE button to the manual tuning mode. Adjust antenna placement to eliminate multipath interference. The station is too weak. This unit has been unplugged for a long period. Weak signal or loose antenna connections. Noises result from ligtning, fluorescent lamps, motors, thermostats and other electrical equipment. A television set is being used nearby. Use the manual tuning method. Use a high quality directional FM antenna. Repeat the presetting procedure. Tighten the AM loop antenna connections and rotate it for best reception. Use the manual tuning method. Use an outdoor antenna and a ground wire. This will help somewhat but it is difficult to eliminate all the noises. Relocate this unit away from the TV. Direct sunlight or lighting (of an inverter type of fluorescent lamp etc.) is striking the remote control sensor of the main unit. The batteries of this remote control transmitter are too weak. This unit is in the standby mode. Change the position of the main unit. Replace the batteries with new ones. Turn the power to this unit on. FM AM Remote control transmitter Others 26