Troubleshooting - Clarion NP400 Owner's Manual

4. TROUBLESHOOTING

GENERAL
Problem
Power does not turn on.
(No sound is produced.)
Nothing happens when
buttons are pressed.
Display is not accurate.
USB DEVICE
Problem
USB device cannot be
inserted.
USB device is not recognized.
16 NP400
Cause Measure
Fuse is blown. Replace with a fuse of the same amperage. If the
fuse blows again, consult your store of purchase.
Incorrect wiring. Consult your store of purchase.
The Turn off the power and open the operation panel.
microprocessor Press the reset button with a thin rod.
has malfunctioned Note:
due to noise, etc. When the Reset button is pressed, turn off the ACC
power.
* When the Reset button is pressed, frequencies
of radio stations, titles, etc. stored in memory are
cleared."
Cause
The USB device has
been inserted with wrong
direction.
The USB connector is
broken.
The USB device is
damaged.
Connectors are loose.
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.