Unit Information - Furuno GP-3700 Operator's Manual

12. MAINTENANCE, TROUBLESHOOTING
Loran (or Decca) TDs are not
displayed.
Loran (or Decca) TDs are
wrong.
Bearing is wrong.
The ship's speed indication is
not zero after the ship is
stopped.
Data from NMEA2000 equip-
ment are not received.
AIS target without heading data
points true north always.
12.6

Unit Information

You can display information about this equipment from the menu.
1. Press the MENU key to open the main menu.
2. Select [0. SYSTEM SETTING].
3. Select [0. MAINTENANCE].
4. Select [1. UNIT INFORMATION].
12-4
Symptom Remedy
Check the Loran or Decca chain number on the
[PLOTTER DISPLAY SETTING] - [LORAN/DECCA
SETTING] menu.
Correctly enter TD offset on the [PLOTTER DISPLAY
SETTING] - [LORAN/DECCA SETTING] menu.
Check the [MANUAL MAG. VAR.] setting in the [SYS-
TEM SETTING] - [DISPLAY FORMAT] menu.
Try to decrease the setting for [SPEED AVERAGING]
in the [SYSTEM SETTING] - [NAVIGATOR SETUP]
menu.
Turn on the NMEA2000 network power first. If the
GP-3700 power is turned on first, restart it.
Check the course by displaying the AIS target data
(see section 11.4.1).