Troubleshooting - Clarion M505 Owners And Installation Manual

6. TROUBLESHOOTING

GENERAL
Problem
Unit can not power
on.
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.
The audio quality is
poor after connection
with a Bluetooth-
enabled device.
16
M505
Cause
Unit fuse blown.
Car battery fuse blown.
Improper audio output
connection.
Volume set too low.
Speakers damaged.
Heavily biased volume
balance.
Speaker wiring is in contact
with metal part of car.
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 with wrong
direction.
The USB connector is
broken.
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.
Measure
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.
Measure
Reversing the connection direction of the USB
device, try it again.
Replace with a new USB device.
Disconnect the USB device and reconnect. If
the device is still not recognized, try replacing
with a different USB device.
Store these files properly in the USB device.
Use MP3/WMA files encoded properly.
Measure
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.