Instruction manual

Chapter 4 Maintenance and Inspection CVS-128
4-2 0093112802-00
4.3 Fuse Replacement
If the input voltage is too high, the over-current flows or a trouble occurs inside, the fuse will blow out.
The fuse is housed in the power cable.
4.4 If you suspect a trouble
Symptom Trouble cause Countermeasure
Even if the power is
powered on, nothing is
displayed.
• Blown fuse.
• The power voltage is out of
specification (10.8 to 31.2
VDC).
• Poor connection between
power cable and battery.
• Exchange a fuse.(See [4.3 Fuse
Replacement])
• Use a proper power as per
specification.
• Confirm a connection between the
power cable and the battery.
The unit starts up. But,
nothing is displayed on
the display.
• Connection between
transducer and display unit.
• Defect of LCD display block.
• Confirm a connection between
Transducer and Display unit.
• Consult a repair shop or the
distributor in your market.
Too much interference
and noise.
• Installed position of
transducer.
• Interference from the echo
sounder on other boat.
• Confirm the position of transducer.
(See [5.3 Installation of
Transducer])
• Apply the interference rejection.
(See [2.3 Rejection of
Interference])
The display of water
temperature / boat speed
is abnormal or not
displayed.
• Connection of sensor
connector.
• Input source of water
temperature sensor / speed
sensor.
• Confirm the connection of the sensor
connector.
• Confirm the input source.
The display of present
location/course is
abnormal or not
displayed.
• Connection between this unit
and navigation equipment.
• Confirm a connection between
Display unit and the navigation
equipment.
Warning
Use the specified fuse. If you use a fuse other than
specified one, it may lead to a serious accident.