Yamaha HTR-5630RDS owner manual Problem, Cause, Remedy, Refer to

TROUBLESHOOTING

Problem	Cause	Remedy	Refer to
			page
A “humming” sound can	Incorrect cable connections.	Firmly connect the audio plugs. If the problem	–
be heard.		persists, the cables may be defective.
The volume level cannot	The component connected to the OUT	Turn on the power to the component.	–
be increased, or the	(REC) jacks of this unit is turned off.
sound is distorted.
The sound effect cannot	It is not possible to record the sound effect		–
be recorded.	with a recording component.
The sound field	“OPTION 2 MEM.” in the set menu is set	Set “OPTION 2 MEM.” in the set menu to OFF.	–
parameters and some	to ON.
other settings on the
unit cannot be changed.
The unit does not	The internal microcomputer has been	Disconnect the AC power cord from the outlet	–
operate properly.	frozen by an external electric shock (such	and then plug it in again after about 30 seconds.
	as lightning or excessive static electricity)
	or by a power supply with low voltage.
“CHECK SP WIRES”	The speaker cables are short circuited.	Make sure all speaker cables are connected	–
appears on the front		correctly.
panel display.
There is noise interfer-	This unit is too close to the digital or high-	Move this unit further away from such	–
ence from digital or	frequency equipment.	equipment.
high-frequency
equipment, or this unit.
The unit suddenly turns	The internal temperature has become too	Wait until the unit cools down and then turn it	–
into standby mode.	high and the overheat protection circuitry	back on.
	has been activated.

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