32
TROUBLE SHOOTING
When the condition of this unit is bad, please check the following points before asking to repair;
Power can not be
turned on.
No display on th screen.
Bottom or fish school
can not be displayed at
all.
Image does not appear
sometimes.
Voltage of battery is lower than standard
value (11V).
Contact of power connector is poor.
Incorrect connection of power cable to
boat battery.
Wire inside power cable is cut.
Blown fuse.
Brightness control is set to minimun.
Contact of transducer connector is bad.
Frequency is wrong.
Transducer is not immersed into water
well.
In case of installing the transducer inside
the hull, it is not immersed into water
because internal liquid becomes less.
Transducer is not immersed into water
well.
When installation of transducer is bad,
air bubbles wind is easily at high speed
sailing. It results in no display.
Influence of air bubble when the boat
runs across the wakes of another boat.
Recharge the battery.
Tighten firmly. Clean and remove the rust, dust,
etc. In case of corrosion, please replace.
• Replace power supply cable.
• Replace the connector.
Check the polarity and connect correctly.
Replace the polarity and connect correctly.
Replace fuse (10A).
Adjust the brightness control. (Refer to page16)
Connect surely. Clean the surface of
transducer and remove the rust, stain, or etc.
Replace in case of corrosion.
• Replace in case of corrosion.
• Replase connector on the unit (ask to repair).
Select the correct frequency on.
Install the transducer where it is always
immersed in water.
Supplement liquid so that transducer can be
immersed into water.
Install the transducer where it is always
immersed under the waterline.
Check the installation of transducer.
Move the own boat or wait until air bubbles
disappear.
Symptoms
Causes
Remedy
