Troubleshooting; Easy Troubleshooting - Furuno FR-1500 Operator's Manual

6 TROUBLESHOOTING

6.1 Easy Troubleshooting

This paragraph describes how to cure operational problems, which can be made by observing the
radar picture and using operator controls and keys without opening the display unit, antenna unit or
other equipment units.
Problem
Power turned on but radar does
not operate at all.
Control panel is not illuminated.
Marks, legends and noise appear
but no echo.
Picture not updated or picture
freeze up.
TUNE control adjusted but poor
sensitivity.
Range changed but radar picture
does not change.
Only 2 parallel index lines when 6
lines are wanted.
Poor discrimination in range.
True motion presentation not
working properly.
Target not tracked correctly.
Range rings are not displayed.
No own ship marker
Remedy
Check fuse. If it is blown, replace it.
Check Tx fuse. If it is blown, replace it.
Check connection of signal cables.
For video freeze up turn off and on the radar
Clean the radiator surface.
Remove water from the feeder line.
Second trace rejection is on. Turn it off. (See paragraph 1.31.)
Try to hit the [+] and [-] keys several times.
Turn off and on the radar.
Set index line interval correctly on the OTHER menu.
Adjust A/C SEA control.
Try to press MODE key a little harder.
Adjust A/C SEA and A/C RAIN controls.
Adjust brilliance of range rings on BRILL menu.
On R-type check setting of OS MRK on OTHER menu.
-6.1-
.