Chapter6
KGC-1
Maintenance and Trouble shooting Operation
Manual
Faults detected
Possible cause of the failure
Remedial action
The POWER lamp lights
but the DATA lamp does
not light or flash.
1. Is the GPS Antenna connector
firmly connected?
1. Make sure that the GPS
Antenna and Processor unit
are firmly connected. If not,
reconnect the cable.
Data lamp is lighted but
no bearing data is output
to radar or navigation
unit.
1. Is the cable connection between
the Processor unit output port
(DATA1 ~ 4) and radar or
navigation unit firm and correct?
2. Is the data reception setting at the
radar or navigation unit set to
accept the data from the GPS
compass?
1. Check the connection and if it
is not correct or loose,
reconnect the connector.
2. Check the data reception
setting at the radar or
navigator unit. If the setting is
not correct, reset the setting.
NOTE:
Not often the case
however, the data interval setting
for the reception and transmission
units is set not matched. In such a
case, change the bearing data
transmission rate by the MODE
switch to find a suited data rate.
(Refer to Para 5.3 for detail)
DATA lamp keeps
flashing and no bearing
data is output
*The bearing calculation time may be
prolonged in case effective GPS
satellites are not properly dispersed.
1. Are the GPS antenna cables firmly
connected to the Processor Unit at
ANT1 and ANT2?
2. Disconnect the stern side antenna
cable at ANT2 with the bow side
antenna cable connected to ANT1.
Does the DATA lamp flash?
3. Disconnect the bow side antenna
cable at ANT1 with the stern side
cable connected to ANT2. Does the
DATA lamp flash?
4. If the above three items are
checked and no faults are located with
the DATA lamp still flashing, initialize
the unit. (Refer to Para 7.3 for detail)
あ
1. Check the connection.
2. The DATA lamp flashing stops.
Change the connection of the bow
side antenna to the ANT2 port. If
the DATA lamp is still dimmed, the
bow side antenna or its cable may
be faulty. If the lamp keeps
flashing, the ANT1 receiver
section (D73-700*) may be faulty.
Call for service.
3. The DATA lamp flashing stops.
Change the connection of the
stern side antenna to the ANT1
port. If the DATA lamp is still
dimmed, the bow side antenna or
its cable may be faulty. If the lamp
keeps flashing, the ANT2 receiver
section (D73-700*) may be faulty.
Call for service.
4. If the situation does not change
even if the unit has been
initialized, call for service.
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