User Manual

22 En
If there is a problem with the unit, check the following list first. If the problem you are experiencing is not
listed below or if the instructions below do not help, turn off the unit, disconnect the power cable, and contact
the nearest authorized Yamaha dealer or service center.
TROUBLESHOOTING
General
Problem Cause Solution
Cannot turn on the unit.
The power cable is not connected
firmly.
Reconnect the power cable into the wall
outlet and the unit firmly.
The unit may have received a strong
electrical shock such as lightning or
excessive static electricity.
Disconnect the power cable. Wait about
30 seconds, reconnect the power cable, and
turn on the unit.
The speakers make no sound.
The volume may be set to the minimum
level.
Adjust the volume level.
The source may be incorrect. Select the correct source.
Auto Standby is activated. Turn on the unit again.
Sound suddenly turns off.
The sleep function (☞ P. 21) may be
set.
Turn on the unit and play the source again.
Auto Standby is activated. Turn on the unit again.
Sound is cracked/distorted or
there is abnormal noise.
Input source volume is excessive, or
volume of this unit is excessive
(especially Bass).
Adjust volume with VOLUME, or adjust
Bass with EQ (☞ P. 15).
The unit does not operate
properly.
The unit may have received a strong
electrical shock such as lightning or
excessive static electricity, or power
supply may have dropped.
Set the unit to standby mode and
disconnect the power cable. Wait about
30 seconds, reconnect the power cable, and
turn the unit on.
The unit turns on but
immediately enters standby
mode.
A digital or high-frequency
equipment produces noises.
The unit may be placed too close to the
digital or high-frequency equipment.
Place the unit further away from the
equipment.
The clock setting has been
cleared.
The unit is left more than one week after
you disconnect the power cable from the
wall outlet.
Plug the power cable into the wall outlet
firmly, and set the clock again (☞ P. 7).
The selected source does not
play back at the alarm time.
No CD or USB device is inserted. Insert a CD or USB device.
ALARM TYPE switch is set to BEEP. Set ALARM TYPE to SOURCE + BEEP
or SOURCE (☞ P. 16).
Clock flashes and the unit
cannot be operated.
CLOCK switch on the rear panel is set
to SET, and this unit is in clock setting
mode.
Set CLOCK switch to LOCK (☞ P. 7).
Auto Standby is inactive.
The unit may have picked up ambient
noise.
If the unit is close to portable phones,
wireless devices, microwave ovens,
fluorescent light, place the unit further
away from them.
The front display becomes dim.
The front display setting is set to AUTO. Set the brightness of the front panel
display to a setting other than AUTO. Or,
do not cover the illumination sensor.
Cannot charge the connected
portable USB device.
An incompatible USB device is
connected to the unit. Or the USB
device is not connected to this unit
properly.
Press to enter standby mode, and
reconnect the USB device to the unit. If it
does not resolve the problem, the USB
device is not chargeable with the unit.