Furuno FS-5070 manual Maintenance, 11-2

11. MAINTENANCE & TROUBLESHOOTING

11.2Maintenance

Regular maintenance is vital for maintaining performance. Following the procedures below will help keep the equipment in top operating condition.

Maintenance check points

Item	Check Point		Remedy/Remarks
Antenna	Check for physical damage and		Replace damaged parts.
	corrosion.
Wire	Check that the antenna is properly		If necessary, re-span antenna.
antenna	spanned and separated sufficiently
	from metallic structures.
Insulators	Check for salt water deposits on		Replace damage insulators. Remove
for antenna	insulators. Check that connection at		salt water deposits. Clean with fresh
	the lead-in insulator is tight and		water, then dry. Remove rust, then
	rust-free.		tighten bolts and lock nuts. Cover
			metallic surface with sealing
			compound.
Antenna	•	Check condition of antenna terminal,	•	Tighten loosened
coupler		ground, coaxial cable and control		connections.
	•	cable.	•	Fasten lid firmly and evenly to
		Check that coupler lid and cable		prevent water leakage.
		glands are firmly secure.	•	Replace if damaged.
		Check for physical damage, corrosion
		and salt water deposits.
Control	•	Check ground connection, control	•	Tighten loosened
unit		cable, and external equipment.		connections; remove foreign
		Confirm that there are no objects on		material from connectors.
	•	the top of the control unit.	•	Remove any objects.
		Remove dust from control unit with	•	Wipe the LCD carefully to
		soft cloth.		prevent scratching, using
	Note: Do not use chemical cleaners to			tissue paper and an LCD
				cleaner. To remove dirt or salt
	clean the control unit; they can remove			deposits, use an LCD cleaner,
	paint or markings or deform the			wiping slowly with tissue
	equipment.			paper so as to dissolve the
				dirt or salt. Change paper
				frequently so the salt or dirt
				will not scratch the LCD.
Transceiver	•	Check connection at signal cable,	•	Tighten loosened connections;
unit		coaxial cable, control cable, power		remove foreign material from
		cable, and navigator.		connectors.
	•	Confirm that there are no objects on	•	Remove any objects.
		the top of the cabinet.
Power supply	•	Check that the supply voltage at	•	If not within the range, check
		transmission is within the rated range		ship’s mains or ship’s battery.
		(21.6 to 31.2 VDC at the power		Low voltage may cause
		connector).		erratic operation.

11-2