Insignia 105SX - Manual (Page 23)

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voltage from your boat’s electrical system.
The time, speed and distance calculations are useful for tracking your
progress on a trip. The input voltage is useful for determining the
condition of the charging system of the boat. When used in a portable
application or whenever the 105SX is operated from a battery source, the
voltage number can be used to determine battery life. The 105SX will
operate at voltages from 10 to 20 VDC. Voltages in excess of 20 or less
than 10 VDC cause the unit to power off.
USING THE DIAGNOSTIC FEATURE
The 105SX 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 105SX 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 Connection. The first connection tested is Transducer input.
If a transducer is detected, the message “connected” 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.
Voltage Input. Another connection tested is the voltage input, and is
ADVANCED FEATURES
USING THE DIAGNOSTIC FEATURE