Easy Troubleshooting - Furuno FAR-2218 Operator's Manual

6.5

Easy Troubleshooting

This section provides troubleshooting procedures that the user can follow to restore
normal operation. If you cannot restore normal operation, do not attempt to check in-
side any unit. Any repair work is best left to a qualified technician.
Problem
Key beep inaudible.
Picture not updated or picture
freeze. 30 seconds after the pic-
ture freezes, the buzzer sounds,
the ALARM ACK key blinks and
alarm signal is output.
Power is ON but nothing appears
on monitor.
Marks, indications and noise ap-
pear but no echo.
Range changed but radar picture
does not change.
Only two PI lines when six lines
are wanted
Range rings are not displayed
Tracked target not tracked cor-
rectly
Tuning adjusted but poor sensi-
tivity
Possible cause
Key beep turned off.
Video freeze.
Brilliance is too low.
Tx high voltage protection
circuit has activated.
Defective range key or video
freeze up.
Incorrect setting of PI line in-
terval
Range rings are turned off
Poor definition of targets in
sea clutter
Second trace echo rejector
on or dirt on radiator face
6. MAINTENANCE, TROUBLESHOOTING
Remedy
Adjust key beep level in the
[OPERATION] menu, referring
to section 1.10.
Turn the power off and on again
to restore normal operation.
Adjust the brilliance, referring to
section 1.3.
Reset the power to restore nor-
mal operation.
Adjust the range with the con-
trol unit, or the [RANGE] box
several times.
If that does not work try to turn
the power off and on again to
see if the problem might be vid-
eo freeze up. If unsuccessful,
replacement of keypad may be
required.
Adjust PI line interval, referring
to section 1.40.3. Also, the set-
ting for number of PI lines to
display may be inappropriate.
Check the menu setting for
number of PI lines, referring to
section 1.40.2.
Try turning on the range rings
with [RANGE RING] in the
[NAVTOOL] menu. If they do
not appear, their brilliance may
be too low. Adjust their bril-
liance in the [BRILL] menu.
Adjust A/C SEA and A/C RAIN
referring to section 1.20 and
section 1.21.
• Disable the second trace
echo rejector, referring to
section 1.29.
• Clean the radiator face.
6-5