Uniden UM425 Guide D'utilisation page 57

Maintenance and Troubleshooting
Problem
I can't read the display.
The display is too bright at
night.
I can't see any words on the
display.
I'm not getting any GPS data
on my display.
I'm not getting any hazard
alerts.
I'm getting all the hazard
alerts, not just the ones for
my area.
I can't make Group DSC
calls.
Where can I find my radio's
serial number?
The radio won't let me enter
my User MMSI. What do I
do?
Things to Try
Adjust the contrast and backlight brightness level
(see page 23)
Adjust the backlight brightness level.
Turn off the radio; hold menu key and turn it back
on (see page 23)
Reset the radio back to the default brightness
level: turn off the radio; hold the menu key and
turn it back on.
Make sure your GPS receiver is correctly
connected (see Connecting to a GPS receiver).
Make sure your GPS receiver is working properly.
Make sure that your GPS receiver supports the
NMEA parameters described in NMEA Operation
on page 67.
Make sure Weather Alert Watch is turned on.
Check to make sure the FIPS codes in your radio
include your current location (see Using FIPS
codes for weather alerts on page 21).
Check to make sure the FIPS codes in your radio
were entered correctly (see Using FIPS codes for
weather alerts on page 21).
Sometimes the Weather Alert Watch may catch
a hazard alert in the middle of the broadcast and
miss which FIPS codes are affected. For your
safety, the radio triggers the alert tone and switch-
es to the weather channel when this happens.
Make sure the Group MMSI was entered cor-
rectly.
Look on the right side of the radio (the side with
the microphone cord), behind the mounting
bracket.
Contact customer service.
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