5.2 Errow Indication

When the FS-1503 detects a fault in the synthesizer unit (frequency unlocked),the frequency or channel number blinks.

5.3 Replacing Fuses

To protect the unit from overcurrent and equipment fault,two 30 A are provided in snap-in holders on the power cable. If a fuse blows,find out the cause before replacing it. If it blows again after replacement,request service.

WARNING

Use the proper fuse.

Fuse rating is shown on the equipment. Use of a wrong fuse can cause equipment damage and void the warranty.

5-3

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Furuno FS-1503 manual Errow Indication, Replacing Fuses