Troubleshooting - Furuno FCR-2107 Series Operator's Manual

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