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81238_1.book Page 123 Thursday, September 16, 2004 2:49 PM
Maintenance and troubleshooting
Sonar
Problem
Display' freezes'
Sonar does not display fish
Sonar does not see the bottom or fish
Sonar display is unreliable at high speeds
Sonar displays a lot of background noise
Sounder speed or log readings are wrong
Lifeline
Problem
Cannot register a tag after a system reboot Lifeline needs to detect activated tags. Click 'Scan for
All tags show 24 hours to expiry even
though this is not correct
Trackball
Problem
Cursor stops following the trackball
Possible solution
1.Check the scrolling speed is not set to zero.
2.Check the transducer cable for damage.
If damaged, the cable and transducer must be replaced
as a unit.
1. Fish arches are not displayed if the boat is stopped -
fish appear on the display as a straight line.
2. Check that the gain is not set too low.
1. Check that the gain is not set too low.
2. Check that the transducer face is not covered or
fouled. If necessary clean the transducer.
Turbulence around the transducer may be confusing the
unit.
1. Check that the gain is not set too high.
2. Check tat the transducer is clean.
1. Check that the transducer paddle wheel is clean.
2. If necessary add a speed offset.
Possible solution
tags', a message asking if you want to register detected
tags will be displayed. Click
OK
register a new tag.
This usually occurs after a system reboot. De-activate all
tags and re-activate them.
Possible solution
Move the trackball more slowly. The cursor will then
follow.
123
, you will now be able to
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