Furuno FCR-2107 series, Operator'S Manual

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22. Maintenance and Troubleshooting
22-5
22.3 Troubleshooting
The troubleshooting table below provides common faults and the remedy with which to restore normal operation. If
you cannot restore normal operation do not check inside the equipment - there are no user-serviceable parts inside.
Radar troubleshooting
If… Then… Remedy
the power cannot be turned on
•
power connector may have
loosened.
•
ship’s mains is off.
•
fuse has blown.
•
Check connector.
•
Check ship’s mains.
•
Replace fuse.
nothing appears on the display
•
brilliance is too low.
•
Adjust brilliance.
key doesn't beep when operated
•
key beep is turned off.
•
Turn on key beep from the menu.
Picture not updated or picture
freeze.
•
suspect video freeze. 30 seconds
after the picture freezes the
buzzer sounds, the
ALARM
ACK key blinks and alarm
signal is output.
•
Turn the power off and on again.
marks and noise appear but no
echoes
•
fuse may have blown.
•
Check fuse in processor unit.
picture does not change even
though range is changed.
•
suspect faulty range key or video
freeze.
•
Hit the RANGE key several
times. If nothing happens, turn
the power on and off again.
only two index lines are displayed
•
check index line interval setting.
•
Refer to section 2.20
Parallel
Index (PI) Lines
for how to adjust
index line interval.
range rings are not displayed
•
range rings are turned off.
•
Turn on the range rings from the
Color menu.
ARP target is not tracked correctly
•
sea surface reflections, etc. are
masking ARP target.
•
Adjust A/C SEA and A/C RAIN
to suppress sea and rain clutters.
sensitivity is poor
•
suspect 2
nd
trace echo or soiled
radiator.
•
Remove 2
nd
trace echo; clean
radiator.