Bedienungsanleitung Navman FISH 4100 (Seite 23 von 25) (Englisch)

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FISH 4100 Installation and Operation Manual NAVMAN

To stop problems from electrical noise, try:

- rerouting the power and transducer

cable(s) away from the boat’s other

electrical wiring.

- routing the unit's power cable directly to the

battery instead of through a fuse block or

ignition switch.

4. Bottom is not displayed:

a) The fishfinder may have Manual Range

selected and the depth may be outside the

range value selected. Either change the

fishfinder to Auto Range or select another

depth range - see section 3.8.

b) The depth may be outside the fishfinder’s range.

While in Auto Range, the display unit will flash

the last depth displayed, then display “--.-” to

indicate that there is no bottom detected. A

display of the bottom should reappear when it is

shallower than 180m (600ft).

5. The bottom is displayed too far up the screen:

The fishfinder may have Manual Range

selected and the selected Range value is too

high for the depth. Either change the fishfinder

to Auto Range or select another depth range -

see section 3-8.

6. Bottom echo disappears or erratic digital

reading while the boat is moving:

a) Ensure the back of the bottom surface of the

transducer is slightly lower than the front and

the front is as deep in the water as possible in

order to minimize the generation of bubbles

through cavitation. See the Transducer

Installation Guide for more information.

b) The transducer may be in turbulent water. Air

bubbles in the water disrupt the echoes

returned, interfering with the fishfinder’s ability

to find the bottom or other targets. This often

happens when the boat is reversed. The

transducer must be mounted in a smooth flow

of water in order for the fishfinder to work at all

boat speeds.

c) Electrical noise from the boat’s motor can

interfere with the fishfinder. Try some

suppression spark plugs.

7. If the fishfinder beeps when turned on but

nothing is displayed:

The fishfinder may be operating, but the

contrast settings may have been set too high

or low. Power off the fishfinder. Then hold

and press to reset the fishfinder to the

default contrast setting.

8. The wrong language is displayed:

See section 2.

9. The message "NO TRANSDUCER DETECTED.

ENTER SIMULATION MODE?" appears when you

turn the unit on:

a) Check to see that the blue transducer

connector is plugged into the top connector

(with the blue nut) on the rear of the display

unit.

b) Check the cable connectors are securely

plugged in and the blue collars are is locked in

place. The collars must be secure for water

tight connection.

c) Check that the plugs are clean and free of

water or anything that may short deteriorate the

quality of the connection. Inspect the

transducer cable from end to end for damage

such as cuts, breaks, stretched or squashed

sections.

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Navman FISH 4100 Seite 23

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