Troubleshooting - Furuno GP-33 User Manual

8. MAINTENANCE, TROUBLESHOOTING
8.2

Troubleshooting

This section provides simple troubleshooting procedures which the user can follow to
restore normal operation. If you cannot restore normal operation, do not attempt to
check inside the unit. Any trouble should be referred to a qualified technician.
You cannot turn on the power.
No picture appears.
There is no response when a key
is pressed.
Position is not fixed within 90 sec-
onds.
Position is wrong.
Loran C TDs do not appear.
Loran C TDs are wrong.
Bearing is wrong.
8-2
Symptom Remedy
Check that power cable is firmly fastened.
Check for damaged power cable and connector.
Check battery for proper voltage output.
Press the /BRILL key several times to adjust the
brilliance.
Turn off and on the power. If no change, ask your
dealer.
Check that antenna connector is firmly fastened.
Check the number of satellites on Satellite Monitor
display. If there are two or less, check for obstruc-
tions between antenna unit and satellites.
Check that the correct geodetic chart system is se-
lected on the GPS Setting screen.
Enter position offset on the GPS Setting screen.
Check Loran C chain data on the Pos/TD Setup
screen.
Enter TD offset on the Pos/TD Setup screen.
Check Magnetic Variation on the Plotter Setup
screen.