16-19  Section 16 Failures and After-Sale Services 
 
 
 
 
 
 
Symptom  Cause  Action 
Radar images cannot be 
superimposed. 
 
The connection with the radar 
antenna is abnormal. 
Check the connection with the radar 
antenna. 
The connection with the radar 
indicator is abnormal. 
Check the connection with the radar 
indicator. 
The internal wiring is faulty. 
Make a request to the distributor for 
repair. 
The processing unit (NDC-1678) is 
faulty.   
Make a request to the distributor for 
repair. 
The following popup 
window is displayed. 
System has detected an 
error. 
Turn the power off and 
on again. 
A communication error occurred. 
Close the popup window and after 
checking that there is no problem 
even if the power of this equipment is 
turned off, turn off the power once 
and turn on the power again. 
The following popup 
window is displayed. 
Marine VHF radio does 
not respond. 
Check the connection 
with the equipment. 
The  power  supply  for  the 
HUB is not turned on. 
There is a pr
connection of a VHF LAN cable. 
Check the power supply of the VHF 
or HUB. 
Check the connection of a LAN 
cable.