Furuno DRS4DL, Install Manual

Page: 15 / 28

3. MAINTENANCE, TROUBLE- SHOOTING
10
3.3 Troubleshooting
The table below provides simple troubleshooting procedures to restore normal opera-
tion. If you cannot restore normal operation, contact your dealer for advice.
3.4 Replacement of Magnetron
The life expectancy of the magnetron is approx. 5,000 hours (including standby). The
effectiveness of the magnetron decreases over time, causing lower-than-normal sig-
nal strength and loss of echoes. If you feel the signal strength is low, contact your deal-
er about replacement of the magnetron.
Trouble Remedy
The power cannot be turned on. • Check if the power/LAN cable is connected to
the power source and the power source is on.
• Check the power cable for damage.
• Check if the fuse has blown.
Picture is not updated or the picture
freezes. • Check antenna cable.
• If the picture freezes, reboot the display unit.
Marks and characters appear on
the display, but echoes do not ap-
pear. Check that the antenna cable is fastened.
You changed the range, but the ra-
dar picture does not change. • Try to zoom in or out the radar display.
• Turn the power off and on.
Signal strength is too low. Have a technician check the magnetron.
Name Type Code No.
Magnetron E3571 (80-0691) 001-266-460