12. MAINTENANCE, TROUBLESHOOTING
12-4
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].
Loran (or Decca) TDs are not
displayed.
Check the Loran or Decca chain number on the
[PLOTTER DISPLAY SETTING] - [LORAN/DECCA
SETTING] menu.
Loran (or Decca) TDs are
wrong.
Correctly enter TD offset on the [PLOTTER DISPLAY
SETTING] - [LORAN/DECCA SETTING] menu.
Bearing is wrong.
Check the [MANUAL MAG. VAR.] setting in the [SYS-
TEM SETTING] - [DISPLAY FORMAT] menu.
The ship’s speed indication is
not zero after the ship is
stopped.
Try to decrease the setting for [SPEED AVERAGING]
in the [SYSTEM SETTING] - [NAVIGATOR SETUP]
menu.
Data from NMEA2000 equip-
ment are not received.
Turn on the NMEA2000 network power first. If the
GP-3700 power is turned on first, restart it.
AIS target without heading data
points true north always.
Check the course by displaying the AIS target data
(see section 11.4.1).
Symptom
Remedy
