Note ! Specifications subject to change without notice.
NU_FMS5752_000_08012015_EN
Date: 08.01.2015 Page 16 / 16
Trouble Shooting
Failure description
Reasons
Solutions
Power polarity error
Check the power cable is
connected properly.
Power off
The fuse is burned out.
Change the fuse
Turn on the volume
Adjust the volume
The speaker is not properly
connected.
Check
the
circuit
and
connect properly.
No sound
The device is muted.
Turn off the mute function.
Unstable image
The cable is not connected
well.
Check
and
connect
properly.
No color image
Format error
Adjust to correct format.
The
key
is
no
reaction
MCU error
Re-install the front panel
and re-boot.
Antenna has problems.
Adjust
the
length
of
antenna properly and put
the antenna grounded.
Constant noise
The signal is too weak.
Seek the band available.
Abnormal sound
The program is disordered.
Re-start 3 seconds after
power off.
No
sound
when
changing songs
The process of operation is
too fast.
Wait or power off to re-
boot.
Shutdown
Due to unstable voltage and
current, the main program
will protect automatically.
Re-start 10 seconds after
power off.
Remark
1.
Before installation, please make sure the circuit is connected properly and the
system can work normally.
2.
Regarding the device connection, please refer to the manual. Wrong connection will
lead to the damage of the device.
3.
Please only use the accessories of this device for proper installation. If you use the
parts not authorized, it might have a breakdown.
4.
Please make sure all the power is fixed properly before installation.
5.
When connecting to power supply of the battery, it should connect cables from the
negative of battery. If you connect from the positive side, it might cause danger.
Remark
：
If you still cannot solve your problems by above solutions, please ask a professional
technician or your agent for further help instead of removing and repairing
the device by yourself.
