6. MAINTENANCE, TROUBLESHOOTING
6-4
6.5 Simple 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.
Problem Remedy
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.
