16
RQ
T0
B
31
Troubleshooting
Before requesting service, make the following checks. If
you are in doubt about some of the check points, or if the
solutions indicated do not solve the problem, consult
your dealer for instructions.
█
Common problems
The unit does not work.
•
The safety device has been activated. Do the following:
1.
Touch [
1
] on the unit to turn the unit to standby mode.
If the unit does not turn to standby mode,
–
Touch and hold the touch key for a minimum of
10 seconds. Or,
–
Disconnect the AC power supply cord and reconnect.
2.
Touch [
1
] again to turn on the unit. If the problem
persists, consult your dealer.
The display panel lights up and changes continuously in
standby mode.
•
Touch and hold [
8
] on the unit to select “DEMO OFF”.
No operations can be done with the remote control.
•
Examine that the battery is installed correctly.
Sound is distorted or no sound.
•
Adjust the volume of the system.
•
Turn off the system, determine and correct the cause, and
then turn on again. It can be caused by straining of the
speakers through excessive volume or power, and when
using the system in a hot environment.
A humming sound can be heard during playback.
•
An AC power supply cord or fluorescent light is near the
cables. Keep other appliances and cords away from the
cables of this system.
The sound level reduces.
•
The protection circuit has been activated due to the
continuous use at high volume output. This is to protect the
system and maintain the sound quality.
█
USB
The USB device or the contents in it cannot be read.
•
The format of the USB device or the contents in it are not
compatible with the system.
•
USB devices with storage capacity of more than 32 GB
cannot work in some conditions.
Slow operation of the USB device.
•
Large content size or large memory USB device takes
longer time to read.
█
Bluetooth
®
Pairing cannot be done.
•
Check the Bluetooth
®
device condition.
•
The device is out of the 10 m (33 ft) communication range.
Move the device nearer to the system.
The device cannot be connected.
•
The pairing of the device was unsuccessful. Re-do pairing.
•
The pairing of the device has been replaced. Re-do pairing.
•
This system might be connected to a different device.
Disconnect the other device and try pairing the device
again.
•
The system may have a problem. Turn off the system and
then turn on again.
The device is connected but audio cannot be heard
through the system.
•
For some built-in Bluetooth
®
devices, you have to set the
audio output to “SC-UA7” manually. Read the operating
instructions of the device for details.
Sound from the device is interrupted.
•
The device is out of the 10 m (33 ft) communication range.
Move the device nearer to the system.
•
Remove any obstacle between the system and the device.
•
Other devices that use the 2.4 GHz frequency band
(wireless router, microwaves, cordless phones, etc.) are
interfering. Move the device nearer to the system and
distance it from the other devices.
•
Select “MODE 1” for stable communication.
The one-touch connection (NFC) is not working.
•
Make sure the system and the NFC feature of the device
are turned on.
•
Touch and hold the device on the NFC touch area of the
unit again.
Playback image and sound are not synchronized.
•
Restart the playback app of the device.
•
Connect the device to the system with an audio cable (not
supplied).
█
Radio
Sound is distorted.
•
Use an optional FM outdoor antenna. The antenna should
be installed by a technician.
A beat sound is heard.
•
Turn off the TV or move it away from the system.
•
Move cell phones away from the system if the interference
is apparent.
█
D-IN, AUX
Playback image and sound are not synchronized.
•
When in D-IN source, set “D-IN MODE” to “MODE 2”.
•
When in AUX 1 or AUX 2 source, set “AUX MODE” to
“MODE 2”.
Karaoke effect cannot be used.
•
When in D-IN source, set “D-IN MODE” to “MODE 1”.
•
When in AUX 1 or AUX 2 source, set “AUX MODE” to
“MODE 1”.
SC-UA7 PC RQT0B31-C En.fm Page 16 Thursday, June 9, 2016 9:45 AM
