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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
131


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