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No display:
1. Check DC power connections and DC
polarity with voltmeter.
2. Check fuse.
No depth reading (--) at all depths:
1. Check transducer for growth or multiple coats
of paint.
2. Check the transducer cable for cuts and
sharp bends.
3. Check that the transducer connection behind
the Depth 2100 is firm and free of corrosion.
Erratic readings while moored:
1. Check transducer for growth or multiple coats
of paint.
Appendix B - Troubleshooting
Erratic readings while moving:
1. Cavitation (air) under the face of the
transducer. Review installation and reinstall if
necessary.
Erratic readings only while engine is
running:
1. Re-route power and transducer cables away
from engine, ignition wires and battery
cables.
2. Add feed-through filter capacitor on the
positive terminal of the ignition coil.
3. Add an alternator whine filter to alternator.
4. Replace spark plug wire with resistive type.
DEPTH 2100 Installation and Operation Manual
NAVMAN
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