Troubleshooting Guide And Speed Calibration - Interphase Sea Scout Operation Manual

Troubleshooting Guide
If you are experiencing trouble with your Sea Scout, please refer to the following checklist:
PROBLEM
Unit will not turn on.
Unit beeps but no picture appears
on the screen.
Unit blows fuses.
Loses picture at speed.
LCD darkens in sunlight after
prolonged use.
Screen is full of noise, or has dots
running through it.
Bottom slopes up/down
Speed display is erratic.
Digital water depth not working.
SPEED CALIBRATION (Log Adjustment):
To adjust the speed calibration perform the following steps: Select the Data View and then Range option. Press and
hold the Log Res. for three seconds to bring up the log/speed adjustment menu. Use the front panel knob to adjust the
calibration factor. The unit will adjust up to 40% either positive or negative from the factory settings to compensate
for different hull shapes, etc.
SOLUTION
Check fuse, battery voltage and power connections.
Also, check for continuity through the in-line fuse holder.
Check your connections to the battery. Check for
corrosion on the battery terminals or on the wiring
connections on a fuse block or buss bar.
Wiring is reversed or there is excessive current from the
battery. The red wire should be "+" (positive) and have
continuity with pin #1 on the female side of the power
supply lead.
Adjust the transducer angle or placement. Make sure that
the transducer is installed in the area which has the least
amount of water turbulence.
Overexposed to sunlight - provide shading for display.
Reduce your gain setting and review the section on
interference.
Adjust the transducer angle.
Check and clean the impeller wheel and the surrounding
area - be sure the impeller wheel spins freely.
Increase your gain, and check that you are in the proper
depth range.
51