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8-3
8.3 Simple Troubleshooting
The table below provides common problems and the means with which to restore normal
operation. If normal operation cannot be restored do not attempt to check inside the equipment.
Any servicing should be referred to a qualified technician.
Problem Probable cause Remedy
Power cannot be
turned on.
•
Mains switchboard may be off.
•
DC overvoltage input.
•
Battery may have discharged, or
poor contact at terminals.
•
Turn on the mains switch
•
Check supply voltage.
•
Recharge battery and tighten battery
terminals.
Display indications
do not appear but
key lamps are lit.
•
Contrast is too low.
•
Press the [9/ ] key followed by
or
to
adjust the contrast.
Power is on but no
sound from
loudspeaker.
•
Loudspeaker is off.
•
Operate the [7/ ] key to turn on the loud-
speaker.
8.4 Error Messages
The table below shows error messages and their meanings.
Error messages
Error message Meaning Remedy
Busy: RT Radiotelephone is in operation. Wait till the radiotelephone is free.
EPFS error No position data from navigator
for one minute.
Press the [CANCEL] key to silence alarm.
Check the navigator. If it is malfunctioning
manually enter position.
No position data You attempted to enter position
automatically when there is no
position data.
Check the navigator. See the note at the
bottom of page 3-3 for details.
No response: RT Radiotelephone not powered or
has been disconnected.
Check radiotelephone.
Printer not ready Appears if printer is not
powered or has been
disconnected and automatic
printing is selected.
Check printer.
Warning: Update
position
Position data is older by the
amount of time preset on the
Alarm menu.
Press the [CANCEL] key to silence alarm.
Reenter position on the Position menu.