Uniden UM425 English Owners Manual - 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 switches to the weather channel when this happens. Make sure the Group MMSI was entered correctly. Look on the right side of the radio (the side with the microphone cord), behind the mounting bracket. Contact customer service. E-53