Raymarine AXIOM 2 PRO Installation Instructions Manual page 82

No depth reading / lost bottom lock:
Possible causes Possible solutions
Transducer location Check that the transducer has been installed in
accordance with the instructions provided with the
transducer.
Transducer angle If the transducer angle is too great the beam can
miss the bottom, adjust transducer angle and
recheck.
Transducer If the transducer has a kick-up mechanism, check
kicked-up that it has not kicked up due to hitting an object.
Power source With the product under load, using a multi-meter,
insufficient check the power supply voltage as close to the unit
as possible to establish actual voltage when the
current is flowing. (Check your product's Technical
specification for power supply requirements.)
Damaged or fouled Check the condition of the transducer ensuring it is
transducer not damaged and is free from debris / fouling.
82
Possible causes Possible solutions
Damaged cables 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
Sonar applications to stop scrolling or the unit
to reset/turn off), replace if necessary.
Vessel speed too Slow vessel speed and recheck.
high
Bottom too shallow The bottom depth may be outside of the transducers
or too deep depth range, move vessel to shallower or deeper
waters as relevant and recheck.
Poor / problematic image
Possible causes Possible solutions
Vessel stationary Fish arches are not displayed if the vessel is
stationary; fish will appear on the display as straight
lines.
Scrolling paused or Unpause or increase sonar scrolling speed.
speed set too low