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If...
No picture but marks and characters appear
Picture appears but no zero line
Picture sensitivity is too low
Depth is not displayed
Noise or interference obstructs the display
Water temperature graph appears but no or
wrong readout.
13.4 Error Messages
This equipment displays the following error
messages on the alarm menu to alert you to
possible trouble.
Table 13-4 Error messages
Error message
NO GPS FIX
VOLTAGE OF
INTERNAL BATTERY
IS LOW.
Table 13-3 Simple troubleshooting (sounder)
Check if picture advance speed is set to "STOP" on the
sounder setup options menu.
Check for loosened transducer connector.
If using manual video sounder operation, range is shifted;
set shifting to zero to correct.
Check gain setting, if using manual operation.
Marine life or air bubbles may be clinging to transducer
face.
Water may be dirty.
Bottom may be too soft to return a suitable echo.
Adjust gain to display bottom echo in dark tone.
Check if transducer cable is near ship's engine. If it is,
relocate it.
Check ground.
Other video sounders may be operating nearby and on
same frequency.
Check for loosened sensor cable.
Meaning, remedy
No GPS signal
Voltage of internal
battery is low. Request
replacement of battery.
Then...
13-3
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Table of Contents
Troubleshooting
