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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 mains 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 installation manual for further details.
• Tx interval may be set to "0". Select proper interval:
[MENU ESC] [9] [3] ([9] [4] or [9] [5])
See the installation manual for further details.
• Check appropriate settings on external equipment.
• Check connections:
DD-80 Ext. equipment
TXD-H RXD-H
TXD-C RXD-C