Teleflex TFX160 Operation Manual page 26

MAINTENANCE AND WARRANTY
WARRANTY
7. My unit loses power at high speeds.
Your 160 has over-voltage protection that turns the unit off when input
voltage exceeds 20 VDC. Some outboard motors do not effectively regulate
the power output of the engine's alternator and can produce voltage in
excess of 20 volts when running at high RPMs. The 160 displays input
voltage in the lower left corner of the display when it exceeds 15 VDC. Use
this readout to determine if the voltage exceeds 20 VDC.
8. The screen begins to fade out. Images are not as sharp as normal.
Check the input voltage. The 160 will display the current voltage on-screen
if it is greater than 16 or less than 10 VDC. The voltage readout will appear
in the bottom left corner of the screen.
9. The display shows many black dots at high speeds and high
sensitivity settings.
You are seeing noise or interference caused by one of several sources.
Noise can be caused by other electronic devices. Turn off any nearby
electronics and see if the problem goes away. Noise can also be caused by
the engine. If engine noise is causing the interference, the problem will
intensify at higher RPMs. Increase the engine speed with the boat
stationary to isolate this cause. Propeller cavitation can appear as noise on-
screen. If the transducer is mounted too close to the propeller, the
turbulence generated can interfere with the sonar signal. Ensure that the
transducer is mounted at least 15" (38cm) from the prop.
10. The screen does not display a full fish arch.
Check the running angle of the transducer. If the running angle is too
great, a full fish arch may not appear. Reduce the running angle of the
transducer. Several incremental adjustments may be necessary.
TECHSONIC
WARRANTY
First year repairs (from original date of purchase) on your 160 are absolutely
free. This does not include physical damage to the unit or its accessory
items. Any modification or attempt to repair the original equipment or
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INDUSTRIES, INC. ONE YEAR FULL