Why does my Furuno CH-270 picture contain noise?
Noise in the Furuno Sonar picture can occur due to several reasons: the equipment might not be grounded properly (check the equipment ground); the power cable may be too close to the signal cable (relocate the power or signal cable); or debris may be present on the sea surface (reject unwanted noise using the interference rejector on the COM1 menu).
What to do if the bottom echo becomes irregular on my Furuno Sonar?
Irregular bottom echo on your Furuno Sonar could be due to rough seas, causing changes in the distance to the bottom due to rolling and pitching (check the distance to the bottom). It may also happen if a long range is selected, which makes the transmission period longer, thus the ship’s pitching and rolling affect echo detection (adjust the transmission period).
Why is the echo weak on my Furuno Sonar?
A weak echo on your Furuno Sonar can be caused by the output power being set to minimum (set to maximum on the COM1 menu) or excessive TVG (readjust TVG on the appropriate menu (HORZ, VERT, ES). Remember that readjustment of TVG is necessary whenever the gain is adjusted).
What to do if my Furuno CH-270 Sonar picture color is somewhat strange?
If the picture color on your Furuno Sonar appears strange, the [BRILL] key setting may be too low. Try increasing the brightness using the [BRILL] key.
How to fix Furuno CH-270 Sonar if it cannot turn on?
To solve the problem, check the ship’s mains and have a suitably qualified technician check the fuse in the transceiver unit.
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