Additional Information; Troubleshooting - Yamaha R-N402 Owner's Manual

ADDITIONAL INFORMATION

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, set this unit to standby mode, disconnect the power cable, and contact the nearest
authorized Yamaha dealer or service center.
■ General
Problem
The protection circuitry has been activated
The power does not
three times consecutively. If the unit is in
turn on.
this state, the STANDBY/ON indicator on
the unit will blink when you try to turn on
the power.
The power cable is not connected or the
plug is not completely inserted.
The protection circuitry has been activated
because of a short circuit, etc.
The internal microcomputer has frozen,
due to an external electric shock (such as
lightning or excessive static electricity) or
to a drop in the power supply voltage.
The internal microcomputer has frozen,
The power does not
due to an external electric shock (such as
turn off.
lightning or excessive static electricity) or
to a drop in the power supply voltage.
Incorrect input or output cable
No sound.
connections.
No appropriate input source has been
selected.
The SPEAKERS A/B switches are not set
properly.
Speaker connections are not secure.
Output has been muted.
The Max volume or Initial volume setting
is set too low.
The component corresponding to the
selected input source is turned off or is not
playing.
The audio output of a device connected to
a digital audio input (COAXIAL/
OPTICAL jacks) is set to other than PCM.
The protection circuitry has been activated
The sound suddenly
because of a short circuit, etc.
goes off.
This unit has become too hot.
The auto power standby function has
turned this unit off.

Troubleshooting

Cause
As a safety precaution, capability to turn on the power
is disabled. Contact your nearest Yamaha dealer or
service center to request repair.
Connect the power cable firmly.
Check that the speaker wires are not touching each
other and then turn the power of this unit back on.
Turn off the power and turn it on again after at least
15 seconds elapse. (If the problem persists,
disconnect the power cable from the AC wall outlet
and plug it again.)
Turn off the power and turn it on again after at least
15 seconds elapse. (If the problem persists,
disconnect the power cable from the AC wall outlet
and plug it again.)
Connect the cables properly. If the problem persists,
the cables may be defective.
Select an appropriate input source with the INPUT
l / h on the front panel (or one of the input
selection key on the remote control).
Turn on the corresponding SPEAKERS A or
SPEAKERS B.
Secure the connections.
Turn off the mute.
Check the settings for "Max Volume" and "Initial
Volume" in the "SETUP" menu.
Turn the component on and make sure it is playing.
Set the audio output of the connected device to PCM.
Set the speaker impedance to match your speakers.
Check that the speaker wires are not touching each
other and then turn the power of this unit back on.
Make sure the openings on the top panel are not
blocked.
Change the auto power standby ("AutoPowerStby" in
the "SETUP" menu) to turn off.
Remedy
See
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