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12. MAINTENANCE, TROUBLESHOOTING
12-3
The speed indication
is not zero after the
ship is stopped.
Set [NAVIGATION SPEED] to [Low] in the [INTERNAL GPS
SETUP] in the [SYSTEM] menu.
Fish Finder Troubleshooting
You selected a fish
finder display, but no
picture appears.
• Check that the transducer cable is fastened.
• Check if the fish finder source is correctly selected.
Marks and charac-
ters appear, but no
picture appears.
Check that the transducer cable is connected.
Picture appears but
zero line does not
appear.
• The picture is shifted. Check the shift setting.
• Check if [ZERO LINE REJECTION] in the [FISH FINDER]
menu is off.
The picture sensitivi-
ty is too low.
• Check the gain setting in manual operation.
• Check if marine life or air bubbles are on the transducer.
• Bottom is too soft to return an acceptable echo.
The depth indication
does not appear.
• For manual operation, adjust gain and range to display the bot-
tom echo (in reddish-brown).
• Adjust the bottom level.
• Check if [DEPTH] in the [SELECT INPUT DEVICE] menu in
the [INTERFACE] menu is set to [Fish Finder].
Noise or interference
shows on the dis-
play.
• Make sure the transducer cable is not near the engine.
• Check the ground connection.
• Check if another fish finder in the vicinity of your boat has the
same operating frequency as your fish finder.
• Try to adjust the interference rejector.
Problem Remedy