Troubleshooting - Teleflex TFX100ID Operation Manual

MAINTENANCE AND WARRANTY
T
ROUBLESHOOTING
units that do not actually need repair. If you have trouble with your 100ID,
consult the following troubleshooting guide before contacting Techsonic.
1. Nothing happens when I turn the unit on.
Check the power cable connection and fuse. Be sure the power cable is properly
connected - red lead to 12 VDC positive, black lead to negative. Often a fuse can appear
to be good when in fact it is not. Check the fuse with a tester, or replace it if in doubt.
2. There is no bottom reading on the display when I press the power button.
Ensure that the transducer is properly attached to the 100ID unit. Also, make sure
that the transducer is fully submerged in the water, and that the water depth is not in
excess of the unit's capability.
3. When in very shallow water, I get gaps in the bottom reading or the
depth range continuously changes to deeper ranges.
The 100ID is not able to operate in water 12" or less.
4. The unit is powered before I press power, and it won't turn off.
Check the transducer cable - if the outer jacket has been cut and the cable is touching
metal, you will need to repair it with electrical tape. If you can't find a problem with
the cable, disconnect the transducer from the unit to see if the problem is corrected. If
so, the problem is with the transducer cable.
5. I get gaps in the reading at high speeds.
Your transducer requires adjustment. If the transducer is transom mounted, there are
two adjustments available to you - height, and running angle. Make small adjust-
ments and run the boat at high speed to determine the effect. It may take several
tries to optimize high speed operation.
6. My unit loses power at high speeds.
Your Teleflex Sonar unit has an over-voltage protection which turns the unit off when
input voltage exceeds 17 volts DC. Some outboard motors do not effectively regulate
output voltage and can produce electrical output in excess of 17 volts at higher
engine speeds. Pressing POWER when the output voltage returns to the required level
will restore your unit.
. Many requests for repair received by Techsonic involve

TROUBLESHOOTING

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