How To Replace The Fuse; Troubleshooting - Furuno GP-1670F Operator's Manual

12. MAINTENANCE, TROUBLESHOOTING
12.2

How to Replace the Fuse

The fuse (3A) in the fuse holder on the power cable protects the display unit from high
electric current and equipment fault. If you cannot turn on the power, check the fuse
to see if it has blown. If the fuse has blown, find the reason before you replace the fuse.
If the fuse blows again after the replacement, contact your dealer for advice.
12.3

Troubleshooting

This section provides simple troubleshooting procedures which the user can follow to
restore normal operation. If you cannot restore normal operation, do not check inside
the unit. Have a qualified technician check the equipment.
Problem
General Troubleshooting
You cannot turn on
the power.
No picture appears
even though the
power is on.
There is no response
when a key is
pressed.
Plotter Troubleshooting
Position is not fixed
within 90 seconds.
Bearing is wrong.
The track of your
boat is not plotted.
12-2
WARNING
Use the proper fuse.
Use of a wrong fuse can result in fire and dam-
age the equipment.
• Check for blown fuse.
• Check that the power connector is tightly fastened.
• Check for corrosion on the power cable connector.
• Check for damaged power cable.
• Check the battery voltage is 10.8 to 31.2 V.
Press the POWER/BRILL key and rotate the RotoKey
wise to raise the brilliance.
Turn off and on the power. If you do not get a response, the key
is damaged. Contact your dealer for instructions.
• Check that the antenna connector is tightly fastened.
• Check the number of satellites received, on the GPS Status
Display.
• Check if [POSITION&SOG/COG] in the [SELECT INPUT
DEVICE] menu in the [INTERFACE] menu is set to [Internal
GPS]. Execute [RESTART GPS] in the [INTERNAL GPS
SETUP] menu in the [SYSTEM] menu.
Check the magnetic variation setting at [COMPASS SETUP] in
the [SYSTEM] menu.
Check that the track is turned on. Operate the [Track] soft con-
trol to turn track on.
Remedy
TM
clock-