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8. MAINTENANCE &
TROUBLESHOOTING
8.1 Maintenance
Regular maintenance is important to maintain
performance. Check the following points
monthly to help maintain performance.
NOTICE
Do not apply paint, anti-corrosive sealant
or contact spray to coating or plastic
parts of the equipment.
Those items contain organic solvents that
can damage coating and plastic parts,
especially plastic connectors.
• Check that connectors on the rear panel
are firmly tightened and free of rust.
• Check that the ground system is free of
rust and the ground wire is tightly fastened.
• Check that battery terminals are clean and
free of rust.
• Check the antenna for damage. Replace if
damaged.
• Dust and dirt on the keyboard and display
screen may be removed with a soft cloth.
Do not use chemical cleaners to clean the
equipment; they may remove paint and
markings. Wipe the LCD carefully to
prevent scratching, using tissue paper and
an LCD cleaner. To remove dirt or salt
deposits, use an LCD cleaner, wiping
slowly with tissue paper so as to dissolve
the dirt or salt. Change paper frequently so
the salt or dirt will not scratch the LCD. Do
not use solvents such as thinner, acetone
or benzene for cleaning. Also, do not use
degreaser or antifog solution, as they can
strip the coating from the LCD.
8.2 Displaying the Message
Board
The message board displays error messages
and alerts. You can display it as follows:
1. Press the [MENU] key once or twice to
open the menu.
2. Choose MESSAGES.
3. Press the [ENT] key.
MESSAGES
• NO GPS FIX!
!
MESSAGE board
4. Press the [MENU] key twice to quit the
message board.
Messages
Messages and their meanings
Message Meaning, Remedy
ANCHOR WATCH! Anchor watch alarm
violated.
ARRIVAL ALARM! Arrival alarm violated.
BACKUP ERROR
DATA/
RAM data corrupted.
Try to clear backup
data. See para. 8.4.
BATTERY ALARM! Voltage of battery in
display unit is low.
Request replacement.
NO DGPS SIGNAL! WAAS/DGPS alarm
violated. *1
GPS NO FIX! No GPS signal. Check
antenna cable.
HIGH VOLTAGE! Power source voltage
too high.
