Troubleshooting - Clarion CMS4 Owner's Manual And Installation Instructions

6. TROUBLESHOOTING

GENERAL
Problem
The unit will
not power on
No sound
The remote is not
responding
Auto seek function
can not find any
stations
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.
18
CMS4
Cause
The vehicle's accessory
switch is not on
Volume is set too low
Wiring is not properly
connected
The built-in internal processor
is not operating properly
The antenna cable is not
connected
The signals are too weak
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
If the power supply is properly connected
to the vehicle's accessory terminal, switch the
ignition key to "ACC"
Increase the volume to audible level
Correct wiring connections
Hold the Power / SRC button and select
Power Off. Press the Power / SRC button to
power back on and check if the remote is
functioning properly.
Insert the antenna cable securely
Select a station manually
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.