Yamaha RX-V670 TROUBLESHOOTING

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.

	SYMPTOM	CAUSE	REMEDY
	The unit fails to turn on when the POWER	Power cord is not plugged in or is not completely	Firmly plug in the power cord.
	switch is pressed.	inserted.
	No sound or no picture.	Incorrect output cord connections.	Connect the cords properly. If the problem persists,
			the cords may be defective.
		The MUTING switch is ON.	First, turn the volume control to full left. Then, turn
			the MUTING switch OFF with the remote control
			transmitter and adjust the volume.
		Appropriate input selector is not pressed.	Press the appropriate input selector corresponding
			to the input source.
	The sound suddenly goes off.	The protection circuit has activated because of	Turning the unit off and then on will reset the
		short circuit etc.	protection circuit.
	Only one side speaker outputs the sound.	Incorrect setting of the BALANCE control.	Adjust it to the appropriate position.
		Incorrect cord connection.	Connect cord properly. If the problem persists, the
			cables may be defective.
Amplifier
	Sound “hums”.	Incorrect cord connections.	Firmly connect the audio plugs. If the problem
			persists, the cord may be defective.
		No connection from the turntable to the GND	Make the GND connection between the turntable
		terminal.	and this unit.
	The volume level is low while playing a record.	The record is being played on a turntable with an	The player should be connected to the unit through
		MC cartridge.	the MC head amplifier.
	No sound from the rear speakers.	The sound output level of the rear speakers is 0.	Turn up the sound output level with the REAR
			LEVEL key.
		The monaural sound source is played in DOLBY	Select another program suitable for the monaural
		PRO LOGIC or ENHANCED mode.	sound source.
	No sound from the center speaker.	The sound output level of the center speaker is 0.	Turn up the sound output level with the CENTER
			LEVEL key.
		The center mode is in PHANTOM mode.	Select NORMAL or WIDE.
		Incorrect sound field program selection.	Select the appropriate program.
		No sound field program is selected.
	FM stereo reception is noisy.	Because of the characteristics of FM stereo	Check the antenna connections.
		broadcasts, this is limited to cases where the	Try using a multiple element FM antenna.
		transmitter is too far away or the antenna input is poor.
FM
	There is distortion and clear reception cannot	There is multipath interference.	Adjust antenna placement to eliminate multipath
	be obtained even with a good FM antenna.		interference.
	A desired station cannot be tuned in with Auto	The station is too weak.	Use Manual tuning mode.
	tuning.		Use a high quality directional FM antenna.
	A desired station cannot be tuned in with Auto	Weak signal or loose antenna connections.	Tighten the AM loop antenna connections and
	tuning.		rotate it for best reception.
			Use Manual tuning mode.
AM	There are continuous crackling and hissing	Noises will result from ligtning, fluorescent lamps,	Use an outdoor antenna and a ground wire. This
	noises.	motors, thermostats and other electrical equipment.	will help somewhat but it is difficult to eliminate all
			noise.
	There are buzzing and whining noises	A television set is being used nearby.	Move the television away.
	(especially in the evening).
	The remote control transmitter does not work.	Direct sunlight or lighting (of an inverter type of	Change the position of the main unit.
transmitter		flourescent lamp etc.) is striking the remote control
		sensor of the main unit.
	The distance or range within which the remote	The batteries of this remote control transmitter are	Replace the batteries with new ones.
	control transmitter can be used decreases.	too weak.
control	The TRANSMIT/LEARN indicator does not
	illuminate or flash.
Remote	Learning cannot be made successfully.	The batteries of the other remote control transmitter	Replace the batteries.
		are weak.
		The distance between the two remote control	Place the remote control transmitters with the
		transmitters is too long or too short.	proper distance.
Others	The sound is degraded when monitoring is	Power cord of this unit is not plugged in.	Plug in the power cord.
	performed by using the headphones connected
	to the compact disc player or cassette deck
	which are connected with this unit.

27