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531598-1_A - PlatCart_Man.qxp
Display Problems
There are several main conditions or sources of possible interference that may cause problems with the quality of the information displayed on the control head.
Look in the following table for some symptoms of display problems and possible solutions:
Problem
The control head loses power at
high speeds.
When the boat moves at higher
speeds, the bottom disappears or
suddenly weakens, or the display
contains gaps.
There are no fish detected, even
when you know they are in the
water under the boat, or sonar
readings seem weak or faulty.
Map Data is Slow to Load
4/11/2007
8:27 AM
Page 21
Possible Cause
If the power output of your boat's engine is unregulated, the control head may be protecting itself using its over-voltage protection
feature. Make sure the input voltage does not exceed 20 Volts.
The transducer position may need to be adjusted. A mix of air and water flowing around the transducer (cavitation) may be
interfering with the inter-pretation of sonar data. See your Installation Guide for suggestions on adjusting the transducer
position.
Electrical noise from the boat's engine may be interfering with sonar reception. See Finding the Cause of Noise for more
information.
Sonar readings may be affected if the transducer is not positioned correctly (i.e. mounted at an angle, not straight down), or there
is some kind of mechanical interference, either because it is mounted inside a hull that is too thick for proper sonar transmission,
the bond between the transducer and the hull is not airtight, or because the transducer is dirty. Check with your Installation Guide
for guidance on re-positioning the transducer, and make sure the transducer is clean.
Low battery voltage may be affecting the power of signal transmission.
Electrical noise from the boat's engine may be interfering with sonar reception. See Finding the Cause of Noise for more
information.
Platinum
™
map data, especially the 3D data, can take a while to load. This is normal, especially when it is first installed.
NOTE: Platinum
™
information, such as a 3D overlay or aerial view, will not be displayed if you are zoomed out too far, or
zoomed in too far. Use the ZOOM keys to adjust your perspective until you can see the Platinum
21
™
information.
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