Raymarine REALVISION 3D Installation Instructions Manual page 40

Possible causes
Damaged or fouled
transducer
Damaged cables
Vessel speed too high
Bottom too shallow or too
deep
Poor / problematic image
Possible causes
Targets will appear differently
if your vessel is stationary (e.g.:
fish will appear on the display as
straight lines).
Scrolling paused or speed set too
low
Sensitivity settings may be
inappropriate for present
conditions.
Damaged cables
40
Possible solutions
Check transducer condition, ensuring it is not damaged and is free
from debris/fouling. If necessary, clean or replace your transducer.
After cleaning or replacement coat the transducer using a
water-based anti-fouling paint.
1. Check the unit's connector for broken or bent pins.
2. Check that the cable connector is fully inserted into the unit
and that the locking collar is in the locked position.
3. Check the cable and connectors for signs of damage or
corrosion, replace if necessary.
4. With the unit turned on, try flexing the power cable near to the
display connector to see if this causes the unit to re-boot/loose
power, replace if necessary.
5. Check the vessel's battery voltage, the condition of the battery
terminals and power supply cables, ensuring connections are
secure, clean and free from corrosion, replace if necessary.
6. With the product under load, using a multi-meter, check for high
voltage drop across all connectors/fuses etc (this can cause the
Fishfinder applications to stop scrolling or the unit to reset/turn
off), replace if necessary.
Slow vessel speed and recheck.
The bottom depth may be outside of the transducers depth range,
move vessel to shallower or deeper waters as relevant and recheck.
Possible solutions
Increase vessel speed.
Unpause or increase sonar scrolling speed.
Check and adjust sensitivity settings or perform a Sonar reset.
1. Check the unit's connector for broken or bent pins.
2. Check that the cable connector is fully inserted into the
unit and that the locking collar is in the locked position.
3. Check the cable and connectors for signs of damage or
corrosion, replace if necessary.
4. With the unit turned on, try flexing the power cable near
to the display connector to see if this causes the unit to
re-boot/loose power, replace if necessary.
5. Check the vessel's battery voltage, the condition of the
battery terminals and power supply cables, ensuring
connections are secure, clean and free from corrosion,
replace if necessary.
6. With the product under load, using a multi-meter, check
for high voltage drop across all connectors/fuses etc (this
can cause the Fishfinder applications to stop scrolling or
the unit to reset/turn off), replace if necessary.