Table of Contents

Operating the HDR 650

30

The HDR 650 Control Head

30

Power On/Off

31

Key Functions Overview

31

Units

32

Shallow Alarm

33

Deep Alarm

34

Set Offset (waterline or keel)

35

Maintenance

36

HDR 650 Maintenance

36

Transducer Maintenance

36

Troubleshooting

37

HDR 650 Doesn't Power Up

37

No Bottom Reading on the Display

38

No Continuous Depth Display in Very Shallow Water

38

Screen Fades, Images are Not Sharp

38

Bottom Reading Disappears During a Hard Turn

38

1-Year Limited Warranty

39

Humminbird® Service Policy

40

Returning Your Unit for Service

41

Specifications

42

Contact Humminbird®

44

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Humminbird HDR 650 manual Maintenance