Troubleshooting - Furuno FSV-35 Operator's Manual

8.7

Troubleshooting

The table below provides common symptoms of equipment troubles and the means to
rectify them.
Symptom
Cannot turn on power.
Bottom echo becomes irregular. • Rough seas. Distance to the bottom changes due to rolling and
Weak echoes
Somewhat strange color
Picture contains noise.
Troubleshooting
• 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.
pitching.
• Long range selected. Transmission period is longer so ship's
pitching and rolling are apt to affect detection of echo.
• 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.
Brilliance setting too low. Increase brightness of the monitor.
• 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.
8. MAINTENANCE, TROUBLESHOOTING
Check, remedy
8-5