11. Trouble Shooting
•
When the condition of this unit is bad, please check the following points before asking to
repair.
Symptoms Causes
Remedy
Dry cells are not put correctly.
Put correctly.
Internal
Battery
Dry cells are run down.
Replace with new ones.
Voltage of battery is lower.
Recharge the battery.
Contact of power connector is poor.
Tighten firmly. Clean and remove
the rust, dust, etc. In case of
corrosion, please replace.
・
Replace power supply cable.
・
Replace the connector.
Incorrect connection of power cable
to boat battery.
Check the polarity and connect
correctly.
Wire inside power cable is broken.
Replace with new one.
Power can
not be turned
on.
Extern
al B
att
ery
Blow fuse.
Replace fuse (2A).
Contact of transducer connector is
bad.
Tighten firmly. Clean and remove
the rust, dust, etc. In case of
corrosion, please replace.
・
Replace transducer.
<Faulty of transducer>
Please check the followings. If you find abnormal symptoms,
1. If you hear sound like “Bo Bo” from surface of transducer, it is normal.
2. When you rub the surface of transducer after setting sensitivity and
depth to maximum, if dots like rain appears on the screen, it is normal.
Transducer is not immersed into
water well.
Install it where it is always
immersed under the water line.
Bottom or fish school can
not be displayed at all.
Setting of each functions is not
adequate.
Execute the system reset.
(page 29)
Transducer is not immersed into
water well.
Install it where it is always
immersed under the water line.
When installation of transducer is
bad, air bubbles wind easily at high
speed sailing. It results in no display.
Check the installation of
transducer
Influence of air bubble when the boat
runs across the wakes of another
boat.
Move the own boat or wait until
air bubbled disappear.
Image does not
sometimes appear.
Transducer wire is cut.
Replace the transducer.
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