MAINTENANCE AND ADJUSTMENT 8-1 Fuse replacement 1 ahe fuse blows oF the transceiver stops functioning; track: down. the source of the problem if possible; and replace the damaged fuse with 3 hew rated fuse, ABSCISSA S A version) 1 B A #1C-1275E [Europe vars ton) Backup battery The 1C-1275A7E has a Namibians backup battery foi detaining meany information. The: usual fife. of the backup battery s approx.