Troubleshooting - Clarion M508 Owner's Manual & Installation Manual

6. TROUBLESHOOTING

GENERAL
Problem
Unit cannot power on. Unit fuse blown.
No/low audio output.
Poor sound quality or
distortion.
Unit resets itself when
engine is off.
USB
Problem
USB device cannot be
inserted.
USB device is not
recognized.
No sound heard with
the display "No File"
shown.
Sound skips or is
noisy.
Bluetooth
Problem
Cannot pair the
Bluetooth enabled
device with the audio
system.
Audio quality is poor
after connection with
a Bluetooth-enabled
device.
16
M508
Cause
Vessel battery fuse blown.
Incorrect audio output
connection.
Volume set too low.
Speakers damaged.
Heavily biased volume
balance.
Speaker wiring is in contact
with metal part of vessel.
Speaker power rating does
not match unit.
Wrong connections.
Speaker is shorted.
Incorrect connection between
ACC and Battery.
Cause
The USB device has been
inserted incorrectly.
The USB connector is broken. Replace with a new USB device.
The USB device is damaged.
Connectors are loose.
No MP3/WMA file is stored in
the USB device.
MP3/WMA files are not
encoded properly.
Cause
The device does not support
the profiles required for the
system.
The Bluetooth function of the
device is not enabled.
The Bluetooth reception is
poor.
Remedy
Replace with new fuse of correct rating.
Replace with new fuse of correct rating.
Check wiring and correct.
Increase volume level.
Replace speakers.
Adjust the channel balance to center position.
Insulate all speaker wiring connections.
Replace speakers.
Check wiring and correct.
Check wiring and correct.
Check the wiring and correct.
Remedy
Reverse the connection direction of the USB
device and try again.
Disconnect the USB device and reconnect. If the
device is still not recognized, try replacing it with a
different USB device.
Store these files properly in the USB device.
Use properly encoded MP3/WMA files.
Remedy
Use another device to connect.
Refer to the user manual of the device for how to
enable the function.
Move the device closer to the audio system or
remove any obstacle between the device and the
system.