Yamaha A-S300BL Troubleshooting, 13 En, General, Problems Possible Causes Solutions Refer to

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, turn off this unit, disconnect the power cable, and contact the nearest authorized Yamaha dealer or service center.

■ General

Problems	Possible Causes	Solutions	Refer to
			page
This unit is not turned	The power cable is not connected.	Connect the power cable firmly.	7
on. The POWER on
	The A button is pressed on the remote	Press A switch on the front panel to ON.
indicator also does			2
	control while this unit is turned off.
not light up.
	There is a problem with the internal	Disconnect the power cable and contact the nearest
	circuitries of this unit.	authorized Yamaha dealer or service center. If an
		unusual odor or noise is generated from the unit, do	—
		not turn on the power, disconnect the power cable,
		and contact a service center for repair.
This unit turns off	The speaker wires are touching each other	Connect the speaker cables properly and press the A
suddenly and the	or shorting out against the rear panel.	switch again. The INPUT indicators blink and the
POWER on indicator		volume is decreased automatically. After the volume
blinks.		has decreased to the lowest setting, the INPUT
		indicators stop flashing, the INPUT indicator of the	6
		last input source selected lights up, and the unit may
This unit is turned off		be used again. Confirm normal sound output from
after several seconds		speakers by increasing the volume gradually, then
of turning on, and the		operate this unit normally.
POWER on indicator
	The speaker is malfunctioning.	Replace the speaker set and press the A switch again.
blinks.
		The INPUT indicators blink and the volume is
		decreased automatically. After the volume has
		decreased to the lowest setting, the INPUT indicators
		stop flashing, the INPUT indicator of the last input	—
		source selected lights up, and the unit may be used
		again. Confirm normal sound output from speakers
		by increasing the volume gradually, then operate this
		unit normally.
	The protection circuitry has been activated	Rotate the VOLUME control on the front panel to
	because of excessive input or excessive	decrease the volume level and then turn the power on	—
	volume level.	again.
	The protection circuitry has been activated	Allow about 30 minutes for the temperature inside
	due to excessive internal temperature.	this unit to decrease, rotate the VOLUME control on
		the front panel to lower the volume and then turn the	—
		power on again. Set the unit in a place where heat can
		readily dissipate from the unit.
	The IMPEDANCE SELECTOR switch is	Turn the power off and slide the IMPEDANCE
	not fully slid to either position.	SELECTOR switch all the way to the correct	4
		position.
	The IMPEDANCE SELECTOR switch is	Set the IMPEDANCE SELECTOR switch to the
	not set to the correct position.	position that corresponds to the impedance of your	4
		speakers.
	This unit has been exposed to a strong	Set this unit to standby mode, disconnect the power
	external electric shock (such as lightning	cable, plug it back in after 30 seconds, then use the	—
	or strong static electricity).	unit normally.
	There is a problem with the internal	Disconnect the power cable and contact the nearest
	circuitries of this unit.	authorized Yamaha dealer or service center. If an
		unusual odor or noise is generated from the unit, do	—
		not turn on the power, disconnect the power cable,
		and contact a service center for repair.

INFORMATION ADDITIONAL

13 En