Yamaha NX-B55 NX-B55 Owners Manual - Page 15

Troubleshooting, General

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En Troubleshooting Refer to the table below if the unit does not operate properly. If the problem you are experiencing is not listed below, or if the instruction does not help, turn off the unit, disconnect the power cable, and contact the nearest authorized Yamaha dealer or service center. ■ General Symptoms This unit is not turned on. No sound is output from either of the speakers, or the sound is too quiet. The sound is distorted. Noise is heard. Causes The AC adaptor is disconnected from the wall outlet or 12V (DC 12V). The p (power) is not turned on. This unit and the other device are not connected correctly. Connections are faulty (or the connections are incomplete). This unit's volume is set to too low. The sound from the connected device is too quiet. Headphones are connected. (No sound comes from the speakers when headphones are connected.) The AUTO STANDBY switch at the rear is set to INIT.. The sound is too loud. Connections are faulty (or the connections are incomplete). The output connector has a bad connection. External noise is picked up. Power-supply noise is picked up. Remedies Connect the AC adaptor to the wall outlet or 12V (DC 12V) correctly. Turn on the p (power). (The indicator lights up.) Make sure that this unit and the other device are connected correctly. Check that the connections are made correctly. Or connect this unit to the Bluetooth device, again. Turn the VOL (volume) control to the right to increase the volume. Increase the volume of the connected device. Disconnect the headphones from this unit. Set the AUTO STANDBY switch at the rear to ON or OFF, again (ON in default setting. ☞ page 3). Lower the volume of the connected device. Check that the connections are made correctly. Check that the stereo mini jack and stereo mini plug cable are not dirty. If they are dirty, clean them. Make sure that devices which emit electromagnetic waves, such as mobile phones, wireless appliances, microwaves or inverter lighting equipment, are not near this unit. Change the source of power supply by directly connecting the AC adaptor to the wall outlet, etc. 8 En

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8
En
En
Refer to the table below if the unit does not operate properly. If the problem you are experiencing is not listed below, or if the instruction does not help, turn
off the unit, disconnect the power cable, and contact the nearest authorized Yamaha dealer or service center.
■
General
Troubleshooting
Symptoms
Causes
Remedies
This unit is not turned on.
The AC adaptor is disconnected from the wall outlet or
12V
(DC 12V).
Connect the AC adaptor to the wall outlet or
12V
(DC 12V) correctly.
The
p
(power) is not turned on.
Turn on the
p
(power). (The indicator lights up.)
No sound is output from
either of the speakers, or
the sound is too quiet.
This unit and the other device are not connected correctly.
Make sure that this unit and the other device are connected
correctly.
Connections are faulty (or the connections are incomplete).
Check that the connections are made correctly. Or connect
this unit to the
Bluetooth
device, again.
This unit’s volume is set to too low.
Turn the
VOL
(volume) control to the right to increase the
volume.
The sound from the connected device is too quiet.
Increase the volume of the connected device.
Headphones are connected. (No sound comes from the
speakers when headphones are connected.)
Disconnect the headphones from this unit.
The
AUTO STANDBY
switch at the rear is set to
INIT.
.
Set the
AUTO STANDBY
switch at the rear to
ON
or
OFF
,
again (
ON
in default setting.
☞
page 3).
The sound is distorted.
The sound is too loud.
Lower the volume of the connected device.
Noise is heard.
Connections are faulty (or the connections are incomplete).
Check that the connections are made correctly.
The output connector has a bad connection.
Check that the stereo mini jack and stereo mini plug cable
are not dirty. If they are dirty, clean them.
External noise is picked up.
Make sure that devices which emit electromagnetic waves,
such as mobile phones, wireless appliances, microwaves or
inverter lighting equipment, are not near this unit.
Power-supply noise is picked up.
Change the source of power supply by directly connecting
the AC adaptor to the wall outlet, etc.