Troubleshooting - Boss Audio Systems MR1440U User Manual

b) When pressed and hold for 2 seconds, it is activated as cyclical mode of
following functions for user s selection.
->BEEP (ON/OFF) -> USER SET(FLAT/CLASSIC/ROCK/POP)
->SUBW(ON/OFF)->VOL(LAST/DEFA) ->CLK(ON/OFF)->CLK(12/24)mode.
After selecting the desired mode, rotate the VOL knob to select one setup
item of the desired mode.
BEEP ON/BEEP OFF
BEEP ON mode: The beep is generated when any key is pressed.
BEEP OFF mode: The beep sound is disabled.
VOL LAST/VOL DEFA
VOL LAST: The radio switches on at the actual volume it had when it was last
switched off.
VOL DEFA: After pressing SEL button, AVOL will be displayed. Then you can
pre-select a constant switch-on volume by using the VOL knob.
CLK ON/OFF
CLK ON: Clock will always show on the display when power off.
CLK OFF: Clock will disappear on the display when power off.
3. POWER ON/OFF
When the unit is power off, the unit comes to ON by pressing any button on the
front panel (except the OPEN key ). It also can turn on the unit to insert a disc,
SD card or USB stick into their slots or socket. When the unit is power on,
press and hold the power button for more than 0.5 seconds, the unit goes into
power off mode.
4. LCD Display
5&6. TUNE, SEEK, TRACK, SKIP UP / DOWN BUTTONS
a) During RADIO mode:
Press the >>| or |<< button shortly to manual tune up/down for the desired
radio station frequency step by step.
Press and hold the >>| or |<< button for longer 0.5 seconds, to automatically
tune up/down for the radio station frequency of strong signal.
b) During disc, SD,MMC, USB playback mode:
Press the >>| button briefly to play next track.
Press the |<< button briefly to play the current track from the beginning of it
if the playing time is more than 2 seconds.
Press the |<< button briefly to play the previous track if the playing time is
less than 2 seconds.
Press the >>| or |<< button and hold to skip forwards or backwards, release
to resume normal playback.
PDF created with FinePrint pdfFactory trial version
'
Page 3
http://www.pdffactory.com
TROUBLE SHOOTING
Before using the check list please make all the connections first.
If you still have questions after going through the checklist, please consult
your local customer service representative.
Common Symptoms
Cause
The car ignition is switched off.
There is no power.
The fuse has blown.
The CDs cannot Presence of CD disc inside the player
be loaded.
The CDs are loaded The transport screws have not been
only halfway into removed.
the CD tray.
Inserting the disc in upside down
The device does
The surface of CD is extremely dirty
not work correctly
or it is damaged.
(EJECT, LOAD,
PLAY)
Temperature inside the car is too
high.
The volume control is set too low.
There is no sound.
The device has not been correctly
connected.
The operation keys 1.The built-in microcomputer is not
do not work operating properly due to noise
2.Front panel is not properly fix into
its place
The installation angle is more than
30 degrees
The surface of the road is uneven.
The sound of the
CD player skips
The surface of CD is extremely dirty
or it is damaged.
No radio reception. The antenna cable is not connected. Insert the antenna cable firmly into the
In automatic search The transmission signals are too
mode the radio does weak.
not stop at a trans-
mitting station.
Solution
If the power supply is properly connected to
the car accessory, switch the ignition key to
" ON " or " ACC " .
Replace another fuse according to the wiring
diagram.
Remove the disc in the player then put a new
upward
Remove the transport screws before using.
Insert the compact disc with the label facing
upward
Clean the CD or try another CD, if this works
correctly, the first CD is properly damaged.
Cool off until the ambient temperature returns
to normal
Turn up the volume properly.
Check the power and earth connection
according to the wiring diagram.
1. Switch the device off and on again. Or press
the RESET button to resume the program.
2. Reinstall the front panel
Adjust the installation angle to less than 30
degrees
Wait until the road becomes smoother before
playing the CD.
Clean the CD or try another CD, if this works
correctly, the first CD is properly damaged.
antenna socket of the device.
Tune in to a radio station manually.
Page 12