9. MAINTENANCE & TROUBLESHOOTING
9-4
9.4 Troubleshooting
The table which follows provides
troubleshooting procedures which you can
follow to restore normal operation. If normal
operation cannot be restored, ask your
dealer for advice.
Table 9-1 Troubleshooting table
If… Then…
you cannot turn on the power
•
check power connector for tight connection.
•
check if ship’s main is off.
•
check for blown fuse.
position cannot be fixed
•
check antenna cable for tight connection and water leakage.
•
check if functional satellite has been disabled:
[MENU ESC] [9] [6]
position is wrong
•
Check if correct geodetic chart is entered: [MENU ESC][9][6]
•
apply position correction to GPS position: [MENU ESC][9][6]
position sometimes cannot be
fixed
•
dop figure may be too small. Enter larger figure; 20 is the
usual setting.
data cannot be transmitted to
external equipment
•
check if data format is correct:
[MENU ESC][9][3] ([9][4]or[9][5])
See the chapter on installation for further details.
•
tx interval may be set to “0”. Select proper interval.
[MENU ESC] [9][3] ([9][4]or[9][5])
See chapter on installation for further details.
•
check appropriate settings on external equipment.
•
check connections:
GP-90-DUAL
Ext. equipment
TXD-H ↔ RXD-H
TXD-C ↔ RXD-C
