Chapter 10
KGP-920
Maintenance and Trouble shooting
10-2 0093121662-08
Faults detected
Possible cause of the failure
Remedial action
Unstable signal reception
1. Are the connections between the
GPS antenna and the display unit
is 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 the GPS antenna site,
the GPS signal cannot be
received properly. Remove
the obstacle or, if this is not
possible, change the antenna
position for better viewing
range available.
Differential GPS (DGPS)
Positioning fails
1. Are the baud rate you have set
and the output signal baudrate of
DGPS beacon receiver match?
(See page 8-7)
2. Are the elevation angle set
greater than 10 degrees? (See
page 8-3)
1. Match the baud rate.
2. Set the elevation angle
greater than 10 degrees.
Data cannot be
Transmitted to external
equipment.
1. Is the connection between the
display unit and interface
cable firmly connected?
2. Are the output data format and
input data format of external
equipment match? (See page
8-15)
1. Reconnect the cable firmly
to the display unit.
2. Match the data format.
Figure 10.1 Replacing the fuse
CAUTION
Always turn off power supply before replacing the fuse
Fuse: F7161 2A
Fuse case
Fuse case