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.