Yamaha RX-V496 Owner's Manual - Page 52

TROUBLESHOOTING SYMPTOM CAUSE REMEDY No sound from the subwoofer. A "humming" sound can be heard. The volume level is low while playing a record. The volume level cannot be increased, or the sound is distorted. The sound effect cannot be recorded. The DVD/LD, TV/digital TV or satellite tuner source cannot be recorded by tape deck, MD recorder or VCR connected to this unit. Adjusting this unit by using SET MENU, TIME/ LEVEL or TEST cannot be performed. "BASS OUT" in the SET MENU is set to the SW or MAIN position when playing a 2-channel source. The source does not contain low bass signals (below 90 Hz). Incorrect cable connections. No connection from the turntable to the GND terminal. The record is being played on a turntable with an MC cartridge. The component connected to the TAPE/MD OUT (REC) terminals of this unit is in the standby mode. It is not possible to record the sound effect by a tape deck or MD recorder connected to the TAPE/MD OUT (REC) terminals of this unit. The DVD/LD player, TV/digital TV or satellite tuner is connected to the unit only through the digital terminals. "MEM. GUARD" in the SET MENU is set to the ON position. Select the BOTH position. Firmly connect the audio plugs. If the problem persists, the cables may be defective. Make the GND connection between the turntable and this unit. The turntable should be connected to the unit through the MC head amplifier. Turn on the power to the component. Make additional connections between the analog terminals. Set "MEM. GUARD" to the OFF position. Refer to page 34 - 12, 13 12 12 - 32 13 36 s Tuner SYMPTOM FM stereo reception is noisy. CAUSE The characteristics of FM stereo broadcasts may cause this problem when the transmitter is too far away or the antenna input is poor. There is distortion, and clear reception cannot be obtained even with a good FM FM antenna. There is multipath interference. The desired station cannot be tuned in with the automatic tuning method. The station is too weak. Previously preset stations can no longer be tuned in. The unit has been disconnected for a long period. The desired station cannot be tuned in with the automatic tuning method. The signal is weak or the antenna connections are loose. There are continuous AM crackling and hissing noises. There are buzzing and whining noises (especially in the evening). Noises result from lightning, fluorescent lamps, motors, thermostats and other electrical equipment. A TV set is being used nearby. REMEDY Check the antenna connections. Try using a high-quality directional FM antenna. Use the manual tuning method. Adjust the antenna position to eliminate multipath interference. Use the manual tuning method. Use a high-quality directional FM antenna. Re-store the stations. Tighten the AM loop antenna connections and orient 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 noise. Move this unit away from the TV. Refer to page 10, 28 10 10, 28 29 11, 28 11 - 48