If You Suspect A Trouble - Koden CVS-872D Installation Manual

Chapter 3 Maintenance

3.5 If you suspect a trouble

Symptom
Even with power on,
nothing is displayed.
After starting up, nothing is
displayed
Much interference noise
Display of
water temperature / Speed
is abnormal or not
displayed.
Display of present
location/course is
abnormal or not displayed.
3-6
Possible cause of trouble
• Fuse is blown.
• Power voltage is out of
specification (10.8 to 31.2
VDC)
• Poor connection between
power cable and battery
• Poor connection between
transducer and Display unit
• Failure of LCD display panel
• Improper installation of
transducer
• Interference from the echo
sounder on other boats.
• Poor connection of sensors
connectors
• Input sources may be
abnormal.
• Poor connection between
this unit and navigation
equipment
CVS-872D
Measure
• Replace the fuse (See "3.3
Fuse Replacement", page
3-2.
• Use a proper power as per
specification.
• Check the connection
between power cable and
battery.
• Check the connection
between transducer and
Display unit.
• Consult a repair shop or
sales agent.
• Check the installed position
of transducer (See "1.3
Installation of transducer",
page 1-6.
• Implement interference
rejection.
• Check the connection at
sensor connectors.
• Check the input sources.
• Check the connection
between this unit and
navigation equipment.
0092607062-01