KGC-1
Chapter6
Operation Manual
Maintenance and Trouble shooting
Faults detected
Possible cause of the failure
Remedial action
ALARM is flashing.
The nature of an error is indicated by
the frequency of flashing. How often
does the lamp flash?
1. Once per second: the battery
life is nearing the end. Refer
to Para. 6.2.3 for the battery
replacement procedure.
2.
Consecutive 8 flashes
followed by a 1 sec. pause:
the signal line is
shorted to ground within the
antenna cable. Check the
ANT1 or ANT2 cable for
short
circuits.
3. Flashes twice to 7 times with
a 1 sec. pause or, 9 long
interval flashes with a one
second pause: the processing
section may be faulty. Record
the flashing interval and
inform your local KODEN
dealer for service.
Incorrect bearing data is
output.
1. Are the antenna connections
correct as follows?
Bow side antenna to ANT1
port and Stern side antenna
to
ANT2.
2. Is the GPS antenna unit properly
oriented to the bow?
3. Please note faulty bearing data
may be output depending on the
dispersion of the GPS antenna.
1.
If the GPS antenna
connections are reversed, i.e.
Bow side antenna to ANT2
and Stern side antenna to
ANT1, faulty bearing
information
is
output.
Correct
the
antenna connection.
2. Check the GPS antenna
installation. If the antenna is
orientated the wrong way,
correct it. (Refer to Para. 4.5 for
the detail of installation)
3. 3.Turn off the GPS Compass
unit and then turn on again to
re-calculate the position.
Positional deviation is
found on the electronic
chart of the GPS track
display unit.
Is the geodetic system of the GPS
track display set to WGS-84?
If the GPS Track display system is
set to the Tokyo system, change it
to WGS-84 or, the GPS compass
geodetic system to Tokyo. For
setting details, please refer to
Para. 7.3 for setting the switch
No.5.
Latitude/longitude
indication is unstable.
1. Are the connections between the
GPS antennas (ANT1 and ANT2)
and the Processor unit correct
and firm?
2. Is there any obstacle preventing
the GPS unit from receiving the
GPS signal?
1. Check the connection and
reconnect, if necessary.
2. If an obstacle exists viewed
from where the GPS antenna
is installed, the GPS signal
will not be received properly.
Remove the obstacle or, if this
is not possible, change the
antenna position for a better
viewing range.
93121652-00
6-3
