Furuno FR-8125 ユーザーズマニュアル

6.  MAINTENANCE, TROUBLESHOOTING

This section provides simple troubleshooting procedures which the user can follow to 
restore normal operation. If you cannot restore normal operation, do not check inside 
the unit. Have a qualified technician check the equipment.

You cannot turn on the power.

•  Check for blown fuse.
•  Make sure that the power connector is 

fastened.

•  Check for corrosion on the power cable 

connector.

•  Check for damaged power cable.
•  Check the battery for correct voltage 

output.

There is no response when a key is 
pressed.

Turn the power off, then on. If you do not 
get a response, the key is damaged. Con-
tact your dealer for instructions.

The power is on and you operated the 
STBY/TX key to transmit. The marks and 
letters appear, but no echo appears.

Make sure that the antenna cable is fas-
tened.

Tuning is correctly adjusted, but sensitivity 
is poor.

Replace the magnetron. Contact your 
dealer.

The range is changed, but radar picture 
does not change.

•  Try to press the RANGE key again.
•  Turn the display unit off then on.

Poor discrimination in range because of 
too many echoes from the waves.

Adjust the A/C SEA control.

The true motion presentation is not work-
ing correctly.

•  Make sure that the setting of [Display 

Mode] in the [Display] menu is set to 
[True Motion].

•  Make sure that the heading and position 

data are inputted and correct.

The range rings are not displayed.

Make sure that the setting of [Rings Brill] in 
the [Brill/Color] menu is not set to [Off].

Target is not tracked correctly because of 
sea clutter.

Adjust A/C SEA and A/C RAIN controls.