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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.
Troubleshooting
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.