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Problem: Unit does not pass self-test.
•
Make sure that the power source has between 10.5-14V 1-amp and that
the connector is fully inserted into the back of the unit.
•
If the test fails repeatedly, call our customer service number listed in
the warranty.
Problem: No bottom or wrong bottom depth is found.
•
Make sure the transducer is at least 6” deep in the water and in an area
where no bubbles or turbulence are present.
•
If possible, rub the face of the transducer and clear off any air bubbles
or debris.
•
Check the clutter control (see page 7).
•
The bottom may be deeper than the 2100 can display.
Problem: Loses bottom at high speed.
•
Make sure that the transducer does not come out of the water when the
boat is on plane.
•
Check the transducer installation (see page 3). Make sure that the
transducer is running through clear, undisturbed water.
Problem: No fish are displayed in the graph.
•
When looking for fish in shallow water, remember that the bottom
transducer beam covers a small area (see page 9).
•
The gain may be too low. Try turning the gain up (see page 8).
Problem: No speed reading (with optional speed accessory).
•
The speed wheel may be jammed with weeds or sand. Make sure it
can turn freely.
Problem: The graph is speckled with too many marks.
•
Some engine ignition systems may interfere with the 2100's operation.
Aluminum boats can carry this interference throughout the hull.
Confirm this by turning the engine on and off. Check the power
connection (see page 5) and transducer cable routing (see page 5).
•
Some pulse-width-modulated trolling motors may interfere with the
2100's operation. Confirm this by turning the trolling motor on and
off. If possible, use a different power source from the trolling motor.
Also try adjusting the Gain and SCC controls (see “Set and adjust
features”
•
When running the boat at speed, it is typical to see scattered pixels on
the screen, due to the water rushing past the transducer. Be sure that
the transducer has been mounted correctly (see page 2).
