Troubleshooting

Lithium battery replacement: After 5 years of use the NS 10 control unit should be taken to an authorized repair facility or returned to the factory for replacement of the internal lithium battery. If returning to the factory, call Humminbird customer service for the battery replacement charge. The battery maintains the memory, so failure to replace this battery could result in a total loss of waypoints, routes and settings.

Many requests for repair received by Humminbird involve units that don't actually need repair. If you have trouble with your NS 10, consult the following troubleshooting guide before contacting Humminbird.

1. Nothing happens when I turn the unit on.

Check your power cable connection and fuse. Be sure the power cable is properly connected to the battery - red lead to

the positive (+) terminal, and the black lead to the negative (-) terminal. Also, check the voltage level at the power connector. Bad connections from the battery terminals to the power connector can result in a large voltage drop and loss of current. You cannot damage your NS 10 by reversing the leads, but the NS 10 will not turn on. A blown fuse is not always apparent on visual examination. It is best to test the fuse electrically if it is questionable.

2.If your NS 10 displays any of the messages listed below upon startup, please return the unit for repair. UNIT NEEDS SERVICE SEVERE FAILURE UNIT MAY COLD START WAYPOINT DATA CORRUPT ROUTE DATA CORRUPT CHECK ALARMS AND USER SETUP

Although pressing CLEAR will allow you to continue using your NS 10, your unit is no longer reliable and should be returned as soon as possible. Send repairs to the repair department address listed on the rear cover of this manual.

3. The NS 10 turns on, but displays no position read-out.

If the initial screen shows a self test failure, your unit may need to be serviced. Try to restart the unit two or three more times before returning for service, because it is possible that the internal test failure is a random occurrence.

If the NO RECEIVER ATTACHED message is on-screen, then the NS 10 is not receiving a signal from the receiver. Check the #7 connector port on the rear of the NS 10 to see if the receiver is properly connected. An unplugged receiver or a pinched or damaged cable may cause this message.

If no warning message appears on the screen, and the NS 10 will not display a position, then the receiver is probably working properly, but visibility of the sky may be obscured or satellite positions are not ideal, and more time may be necessary to solve for your position. Remember, if you have not used your NS 10 in a while, or if you have moved several miles from where you turned the NS 10 off, a cold start may be necessary, which can take as long as 30 minutes. Remaining stationary during the cold start will result in a faster solution.

4. The NS 10 loses my position regularly.

Ensure that your receiver is mounted properly and has an unrestricted view of the sky. When

these two conditions are met, the position gaps persist, use the system status option in the Select System to check satellite coverage. It is possible that the present geometry of the satellites is not ideal. Fortunately, this geometry is constantly changing, and coverage will probably improve soon. This condition may occur at approximately the same time each day. This period of time should be short (less than 30 minutes) and will be eliminated as more satellites are launched.

5. The screen begins to fade out, digits on the screen are not as sharp and clear as normal.