Copyright © 2015 RCA Communications Systems
MRM400
TM
VHF Marine Two-Way Radio Instruction Manual
52
TROUBLESHOOTING
Issues described in the following table are common operational issues. These types of errors are
generally due to improper connections, incorrect settings, or operator error due to incomplete
programming. These problems are usually not caused by unit failure. Before suspecting radio failure,
please refer to the relevant parts of this table and the solution instructions.
Question
Possible Cause
Solutions
Ref.
page
Power did not respond.
1.
The power cable is
not connected well.
2.
The power cable
fuse is blown.
3. The voltage exceeds
17V or below 9V.
1.
Be sure the power cable is connected
correctly: red (+); black (-).
2. Find the cause of blown fuse, then
replace with a DC15A/32V fuse.
3. Be sure the adjust the
power supply is 13.8V.
10
11
1
Unable to connect
with GPS.
1. Connection error.
2. Different external
GPS format.
1.
Be sure the check the
connections are correct.
2. External GPS format should
be NMEA0183-2.0.
11
11
Can not scan.
No set mark
channels (TAG).
Set the channel you want to
scan to mark channels.
23-26