Filter
Top Products
Reset. With the many User Options available to customize the 400TX, it is easy to configure the
unit in such a way that it is detrimental to a particular use. By using the Reset function, all variable
or user-controlled features of the 400TX are returned to the factory settings.
The Reset function is an important first step in troubleshooting problems to ensure that a user
selected setting is not the cause for the perceived problem.
USING THE DIAGNOSTIC FEATURE
The 400TX contains a powerful diagnostic tool that can aid in determining the
cause of a problem.
To use the Diagnostic feature, select the Diagnostic feature on the start-up
menu on the initial screen.
Self Test. Initially, the 400TX will perform a self-test.
This test confirms the operation of all internal circuitry.
At the conclusion of the test, one of two messages will
appear. "Passed" indicates the internal test
discovered no failures, "Failed" indicates a significant
internal problem was discovered and the unit requires
factory service. A code number appears that tells
repair personnel where the problem is.
Transducer. The first connection tested is Transducer
input. If a transducer is detected, "TriBeam" or "Wide
Side" appears. If a series of dashed lines is shown, no
transducer is connected or there is a problem with the
transducer or cable.
If you are using multiple transducers, switch between transducers to confirm the connections for
each.
Boat Speed/Water Temperature Connection. Other connections tested include the boat speed
and surface water temperature sensors. These accessory sensors can be purchased
independently or together as a single sensor (see the Humminbird Accessories catalog). If the
sensors are connected and working properly, a "connected" message appears.
The speed input feature only works when the boat is in motion as the paddle wheel on the speed
sensor must rotate to be detected.
Voltage Input. Another connection tested is the voltage input, and is especially helpful in
diagnosing input voltage problems. The current input voltage is displayed. If voltage fluctuations
or power supply in excess of 20 VDC or less than 10 VDC is suspected, use the diagnostic
screen to confirm input voltage. Often, small outboard motors do not effectively regulate voltage
when operated at high engine speeds.
Use Diagnostic while running the boat at high speeds to show the voltage gain. Also, if you are
using the 400TX in a portable configuration or from the trolling motor battery, Diagnostic can be
used to evaluate the health of the battery by showing the current voltage.