8. MAINTENANCE, TROUBLESHOOTING
8-3
8.4
Advanced-level Troubleshooting
This section provides hardware and software troubleshooting procedures for the qual-
ified serviceman.
Advanced-level troubleshooting
Displayed image stops and
does not update.
• Check that the antenna cable is fastened.
• Reboot the display unit.
You can change the range, but
the radar picture does not
change.
Reset the power.
Poor discrimination in range be-
cause of many echoes from
waves.
Adjust the sea clutter.
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 input and correct.
The range rings are not dis-
played.
Check that the setting of [Rings Brill] in the [Brill/Color] menu is set
to other than [Off].
Target is not tracked correctly
because of sea clutter.
Adjust the sea clutter and rain clutter.
After switching to transmit (TX),
the system switches back to
stand-by (STBY).
• Check that the antenna cable is fastened.
• Turn off the power, wait for a few seconds and reboot.
Problem
Probable cause or check points
Remedy
Power cannot be
turned on.
1) Mains voltage/polarity
2) MAIN board
1) Correct the wiring and input voltage.
2) MAIN supply board.
Brilliance adjusted
but no picture.
1) MAIN Board
1) Replace the MAIN board.
Antenna not rotating. 1) Antenna drive mechanism
1) Replace the antenna drive mecha-
nism.
The picture has "fro-
zen".
1) Heading sensor inside anten-
na unit
2) MAIN board
1) Check connection between IF-SPU
board and heading sensor.
2) Replace MAIN board.
3) Turn radar off and on.
Radar is correctly
tuned but sensitivity
is poor.
1) Dirt on radiator face
2) Deteriorated magnetron
3) Detuned MIC
1) Clean the radiator.
2) Check the magnetron current with
radar on max. range. If the current is
below normal, magnetron may be
defective. Replace the magnetron.
3) Restore default tuning. Replace
MIC.
Range picture does
not change when
range is changed.
1) MAIN Board
2) SPU board
1) Replace MAIN Board.
2) Turn radar off and on.
Range rings are not
displayed.
1) Adjust their brilliance on the
[Brill/Color] menu.
2) MAIN Board
1) Replace associated circuit board if
unsuccessful.
2) Replace MAIN Board.
Problem
Remedy
Содержание FR-10
Страница 1: ...OPERATOR S MANUAL www furuno com MARINE RADAR Model FR 10 FR 12 ...
Страница 16: ...EQUIPMENT LIST xiv This page is intentionally left blank ...
Страница 36: ...1 INSTALLATION WIRING 1 20 This page is intentionally left blank ...
Страница 122: ...6 RADIO OPERATION 6 4 This page is intentionally left blank ...
Страница 136: ...8 MAINTENANCE TROUBLESHOOTING 8 8 This page is intentionally left blank ...
Страница 163: ...D 1 1 F eb 2 022 H M AKI ...
Страница 164: ...D 2 1 Feb 2022 H MAKI ...
Страница 165: ...D 3 1 Feb 2022 H MAKI ...
Страница 166: ...D 4 1 Feb 2022 H MAKI ...