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.
Simple troubleshooting
Problem Remedy
You cannot turn on the power. • Check for blown fuse.
• Check that the power connector is fastened.
• Check for corrosion on the power cable con-
nector.
• Check for damaged power cable.
• Check battery for correct voltage output.
There is no response when a key is
pressed.
Turn off and on the power. If you do not get a
response, the key is damaged. Contact 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 ap-
pears.
Check that the antenna cable is fastened.
Tuning is correctly adjusted, but
sensitivity is poor.
Replace the magnetron. Contact your dealer.
The range is changed, but radar pic-
ture does not change.
• Try to hit the RANGE key again.
• Turn off and on the display unit.
Poor discrimination in range because
of many echoes from the waves.
Adjust A/C SEA control.
The true motion presentation is not
working correctly.
• Check that the setting of [Display Mode] in
the [Display] menu is set to [True Motion].
• Check if the heading and position data are in-
put and correct.
The range rings are not displayed. Check that the setting of [Rings Brill] in the
[Brill/Color] menu is set to other than [Off].
Target is not tracked correctly be-
cause of sea clutter.
Adjust A/C SEA and A/C RAIN controls.
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