8. MAINTENANCE, TROUBLESHOOTING
8-5
8.7
Troubleshooting
The table below provides common symptoms of equipment troubles and the means to
rectify them.
Troubleshooting
Symptom
Check, remedy
Cannot turn on power.
• Check cables between transceiver unit, processor unit and
monitor unit.
• Check ship’s mains.
• Have a qualified technician check the fuses inside the trans-
ceiver unit.
Bottom echo becomes irregular.
• Rough seas. Distance to the bottom changes due to rolling and
pitching.
• Long range selected. Transmission period is longer so ship’s
pitching and rolling are apt to affect detection of echo.
Weak echoes
• Output power set to minimum. Set [TX Power] to maximum, on
the [TX/RX Setting] menu.
• Excessive TVG. Readjust TVG on the [Gain Setting] menu.
Note:
Readjustment of TVG is necessary after the gain is adjust-
ed.
Somewhat strange color
Brilliance setting too low. Increase brightness of the monitor.
Picture contains noise.
• Equipment not grounded properly. Check equipment ground.
• Power cable is too close to the signal cable. Relocate power
cable or signal cable.
• Debris may be on sea surface. Reject unwanted noise with the
interference rejector on the [Picture Setting] menu or gain off-
set on the [Display Setting] menu.
Summary of Contents for FSV-35
Page 1: ...COLOR SCANNING SONAR FSV 35 OPERATOR S MANUAL www furuno com Model ...
Page 12: ...SYSTEM CONFIGURATION x This page is intentionally left blank ...
Page 88: ...4 NUMERIC GRAPHIC DATA DISPLAY 4 4 This page is intentionally left blank ...
Page 118: ...7 RECORD RECALL OPERATION 7 8 This page is intentionally left blank ...
Page 138: ...APPEN I 1 ENU TREE P This page is intentionally left blank ...
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