No Bottom Reading on the Display
If there is no bottom reading visibleon the display, there are a number of possible causes for this condition, including:
•if the loss of bottom information occurs only at high boat speeds, then a transducer adjustment may be needed (refer to the Transducer Installation section);
•check the transducer cable connection on the back of the HDR 650 and make sure that the cable to the transducer has not been cut or pinched, as even a small abrasion in the cable can affect performance significantly.
Correct any known problems, including adjusting the transducer, or actually replacing the transducercable if necessary.
No Continuous Depth Display in Very Shallow Water
Losing continuous depth when the boat is in very shallow water is normal, because the automatic range control cannot lock onto the bottom in depths of one foot or less.
Screen Fades, Images are not Sharp
If the screen begins to fade, and images are not as sharp as normal, check the input voltage. The HDR 650 will not operate on input voltages below 10 VDC.
Bottom Reading Disappears During a Hard Turn
Losing the bottom reading temporarily when the boat is executing a hard turn is normal, as the transducer emerges from the water during such a turn; this condition should correct itself once the turn is completed.
Troubleshooting | 38 |