Symptoms Cause
Remedy
46
Too low sensitivity.
Increase the sensitivity.
Or, set to auto gain (auto
sensitivity control).
Rubbish and weed attached on
the transducer surface.
Dirty bottom or liquid.
Remove the excrescence.
Remove the dirt from bottom
and exchange the liquid.
Water and environmental conditions may cause the problem
with image which is not problem at all.
Bottom or fish
school is not
displayed well.
Too much
sludge
Lots of
weeds
Muddy and
dirty locations
Rapid current
Too high clutter.
Activate low reflection color.
(refer to [CLUTTER] p.20.
）
Too high sensitivity
Lower the sensitivity.
Set to auto gain (auto
sensitivity control)
Too much noise
Interference with other
vessel’s fishfinder
Noise disappears after other
vessel moves far away.
Noise from engine
Change the routing of cables
such as transducer and power
cables. (keep distance from
the engine as far as possible)
