Uniden MC 800 - Manual (Page 37)

Troubleshooting
Problem: Unit will not operate -
1, Check power cord in-line fuse.
2, Check power connections.
3, Check if unit is turned on.
4, Check battery supply voltage.
Problem: Unit causes Interference with radio reception -
1. Connect the power cable to a different circuit than the radio.
2. Reroute cables well away from the radio.
Problem: No bottom display -
1. Check depth range for correct setting.
2. Check that transducer is connected.
3. Check for transducer cavitation (air gap under transducer during
high speed operation}.
Problem: Excessive clutter on the display -
1. Lower Gain setting.
2. Check for turbulence under transducer.
3, Check for mild cavitation under transducer.
4, Check for other depth sounders operating nearby.
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