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En
APPENDIX
Refer to the table below when this unit does not function properly. If the problem you are experiencing is not listed below
or if the instruction below does not help, turn off this unit, disconnect the power cable, and contact the nearest authorized
Yamaha dealer or service center.
Troubleshooting
General
Problem
Cause
Remedy
See
page
This unit does not
operate properly.
The internal microcomputer is frozen due
to an external electric shock (such as
lightning or excessive static electricity) or
by a drop in power supply voltage.
Disconnect the power cable from the AC wall outlet,
wait about 30 seconds and then plug it in again.
—
This unit suddenly
enters the standby
mode
The internal temperature is too high and
the overheat protection circuitry has been
activated.
Wait about 1 hour for this unit to cool down and then
turn it back on.
—
The protection circuitry has been activated
because of a short circuit, etc.
Check that the speaker impedance setting is correct.
Check that the speaker wires are not touching each
other and then turn this unit back on.
—
The sleep timer has turned off this unit.
Turn on this unit and play the source again.
—
This unit fails to turn
on or enters the
standby mode soon
after the power is
turned on.
The power cable is not connected or the
plug is not completely inserted.
Connect the power cable properly to an AC wall
outlet.
The speaker impedance setting is
incorrect.
Set the speaker impedance to match your speakers.
(When this unit is turned back on and
“CHECK SP WIRES!” is displayed.) The
protection circuitry has been activated
because this unit was turned on while a
speaker cable was shorted.
Make sure that all speaker cables between this unit
and speakers are connected properly.
This unit cannot be
turned off.
The internal microcomputer is frozen due
to an external electric shock (such as
lightning or excessive static electricity) or
by a drop in power supply voltage.
Disconnect the power cable from the AC wall outlet,
wait about 30 seconds and then plug it in again.
—
