5. MAINTENANCE AND TROUBLESHOOTING
32
5.2
Life of Parts
LCD
The life of the LCD is approximately 18,000 hours. The actual number of hours de-
pends on ambient temperature and humidity. When the brilliance cannot be raised suf-
ficiently, contact your dealer about replacement of the LCD.
5.3
Troubleshooting
This section provides simple troubleshooting procedures that the user can follow to re-
store normal operation. If you cannot restore normal operation, do not check inside the
unit. Have a qualified technician check the equipment.
5.3.1
General troubleshooting
5.3.2
Plotter troubleshooting
Problem
Remedy
You can not turn on the power.
• Check that the power connector is tightly fastened.
• Check for corrosion on the power cable connector.
• Check for the power cable for damage and corrosion.
• Check battery for correct voltage output.
• Press and hold the power button for several seconds.
The power is on, however noth-
ings appears on the screen.
• Press the power button several times to adjust the brilliance.
• Check if the unit is plugged into the power source.
Picture is not displayed correctly. Turn the power off, then on again.
If the problem persists, contact your local dealer for service.
The touch screen does not re-
spond to touch operations.
• Press the power key and check that [Touch Screen], in the
[Brilliance] pop-up menu is set to [ON].
• Turn the power off, then on again.
If the problem persists, contact your local dealer for service.
The display has frozen.
• Push the power switch until the power goes off. Turn the pow-
er on again.
• Push the hard reset button, located below the microSD card
slots.
Problem
Remedy
Position is not fixed.
Check for interfering objects near the display unit that might be
blocking reception.
Own ship track is not plotted.
Check if [Tracks Disp] is turned on in the layered menu.
5. MAINTENANCE AND TROUBLESHOOTING
33
5.3.3
Radar troubleshooting
5.3.4
Fish finder troubleshooting
Problem
Remedy
You tapped the [TX] icon on the
radar display to transmit but
nothing happens.
• Tap the [TX] icon again. (The icon is filled in white when the ra-
dar is in transmit state.)
• Check if the radar source is correct.
Marks and characters appear,
but echoes do not appear.
Check if the radar source is correct.
Picture is not updated or the
picture freezes.
• Check that there are no obstructions between the antenna and
the display unit.
• If the picture has frozen, turn the power off and on again.
You tuned the receiver, but the
sensitivity is weak.
The life span of the magnetron is over. Have a technician check
the magnetron.
You changed the range, but the
radar picture does not change.
• Try to change the range again.
• Turn the power off and on again.
Poor discrimination in range.
Adjust the rain control.
Range rings are not displayed.
Check if [Radar Rings] is turned on in the layered menu.
You tapped the [TX] icon to
transmit. The "TX screen" ap-
pears momentarily, but the ra-
dar soon goes into stand-by.
The overload protection has activated. To restore normal opera-
tion, turn off all equipment in the network. Wait a few seconds then
turn on all the equipment.
Problem
Remedy
You selected a fish finder dis-
play, but no picture appears.
• Check that the transducer cable is tightly fastened.
• Check that the fish finder source is correct.
• Check that [Transmission] in the cog-wheel menu is set to
[ON].
• Check that [Picture Advance] ([Settings] => [Fish Finder] =>
[Display] menu) is set to other than [OFF].
Marks and characters appear,
but no picture appears.
Check if the transducer cable is tightly connected.
Picture appears but zero line
does not appear.
• The picture is shifted. Check the shift setting.
• Check if the draft setting ([Settings] => [Fish Finder] => [Sensor
Setup]) is zero or higher.
The picture sensitivity is too
low.
• If you are in the manual mode, check the gain setting.
• Check the transducer face for marine life and air bubbles.
• Bottom is too soft to return an acceptable echo.
The depth indication does not
appear on the screen.
Adjust the bottom level HF/LF.
The seabed does not appear on
the screen.
For manual operation, adjust the gain and range to display the
bottom echo in reddish-brown.
Noise or interference shows on
the display.
• Make sure the transducer cable is not near the engine.
• Check the ground for tight connection, corrosion.
• Check if another fish finder near your boat has the same fre-
quency as your fish finder.
• Try to reduce interference with [Interference] in the [Quick Set-
tings] menu (cog-wheel at the bottom-left of the display).
