Yamaha 396, AX-496 TROUBLESHOOTING, work, Cause, Problem, No sound, ambience, What to Do, Sound “hums”, playing a record, function properly, power is turned on

TROUBLESHOOTING

Refer to the chart below when this unit does not function properly. If the problem you are experiencing is not listed below or if the instructions given below do not help, disconnect the power cord and contact your authorized YAMAHA dealer or service center.

Problem	Cause	What to Do
The unit cannot be turned on or	Power cord is not plugged in nor	Firmly plug in the power cord.
turns off suddenly soon after the	completely inserted.
power is turned on.	The IMPEDANCE SELECTOR switch on	Set the switch to either end when this
	the rear panel is not set to either end.	unit is off.
This unit does not work normally.	There is an influence of strong external	Turn off this unit by pressing the
	noise (lightning, excessive static	POWER switch. After about 30 seconds
	electricity, etc.) or a misoperation on this	have passed, turn on this unit and
	unit while using this unit.	operate this unit again.
No sound.	Incorrect output cord connections.	Connect the cords properly. If the
		problem persists, the cords may be
		defective.
	Appropriate input source is not selected.	Select an appropriate input source with
		the INPUT selector.
	The SPEAKERS switches are not set	Set the corresponding SPEAKERS
	properly.	switch to the ON position.
	Speaker connections are not secure.	Secure the connections.
The sound suddenly goes off.	The protection circuit has been activated	Turn off this unit by pressing the
	because of short circuit etc.	POWER switch, and then turn this unit
		on to reset the protection circuit.
Only one of the speakers	Incorrect setting of the BALANCE	Adjust it to the appropriate position.
produces the sound.	control.
	Incorrect cord connections.	Connect the cords properly. If the
		problem persists, the cords may be
		defective.
There is a lack of bass and no	The + and – wires are connected in	Connect the speaker wires in the
ambience.	reverse at the amplifier or speakers.	correct phase (+ and –).
Sound “hums”.	Incorrect cord connections.	Firmly connect the audio plugs. If the
		problem persists, the cords may be
		defective.
	No connection from the turntable to the	Make the GND connection between the
	GND terminal.	turntable and this unit.
The volume level is low while	The record is being played on a	The turntable should be connected to
playing a record.	turntable with an MC cartridge.	this unit through the MC head amplifier.
The volume level cannot be	The component connected to the TAPE	Turn on the power to the component.
increased, or sound is distorted.	OUT or MD OUT terminals of this unit is
	turned off.
The sound is degraded when	This unit is turned off or in the standby	Turn on the power to this unit.
listening with the headphones	mode.
connected to the compact disc
player or tape deck that are
connected with this unit.
Sound level is low.	The LOUDNESS control is functioning.	Set the LOUDNESS control to the FLAT
		position.
The input source cannot be	The CD/DVD DIRECT AMP switch is	Switch off the CD/DVD DIRECT AMP
changed, though the INPUT	ON.	switch.
selector is turned.
Using the BASS, TREBLE,	The CD/DVD DIRECT AMP switch (or	The CD/DVD DIRECT AMP switch (or
BALANCE and LOUDNESS	PURE DIRECT switch for AX-496 only)	PURE DIRECT switch for AX-496 only)
controls does not affect the tone.	is ON.	must be switched OFF to use those
		controls.
The remote control does not	The batteries of this remote control are	Replace the batteries with new ones.
work.	weak.
The remote control does not	Wrong distance or angle.	The remote control will function from a
function properly.		maximum range of 6 meters and no
		more than 30 degrees off-axis from the
		front panel.
	Direct sunlight or lighting (of an inverter	Reposition of the main unit.
	type fluorescent lamp etc.) is striking the
	remote control sensor of the main unit.

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