Boss Audio Systems MR400UAB Marine Audio Stereo System – Bluetooth Head Unit, AM/FM Radio Receiver, No CD Player, Weatherproof, MP3 Player, USB Port, Hook Up To Amplifier, Not Touchscreen

User Manual MR400UAB_EN_UM.pdf - Page 9

For MR400UAB.

PDF File Manual, 11 pages, Read Online | Download pdf file

MR400UAB photo
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7
TROUBLESHOOTING
If you suspect something is wrong, immediately switch power off. Do not use the unit in
abnormal condition, for example without sound, or with smoke or foul smell, can cause fire or
electric shock.
Immediately stop using it and call the store where you purchased it. Never try to repair the
unit by yourself because it is dangerous to do so.
Turn you car's key to ACC or ON.
Check the connection.
Replace fuse.
Check volume or mute on/off, adjust volume to a desired level.
The installation angle is more than 30°. Adjust the installation angle less than 30°.
The built-in micro- computer is not operating properly due to noise. Press the RESET button
to restore the program to zero.
Station or signal is too weak. Select other stations of stronger signal level.
Insert the antenna cable firmly into the antenna socket of this car radio.
Battery cable is not correctly connected. Connect the battery cable to the terminal that is
always live.
a) USB connection is not good. Take it out and insert again.
b) USB is damaged or no music file inside. Change to another USB, or record music inside it.
General
1) Car's engin
e switch is not on.
2) Cable is not correctly connected.
3) Fuse is burnt.
4) Volume is in mute or minimum.
5) Sound skips.
6) The operation keys do not work.
Radio
1) Much noise in broadcasts.
2) The antenna cable is not connected.
3) Preset station is reset.
USB
USB is connecting but no sound
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