Replacement Of Battery On Circuit Board; Replacement Of Fuse - Furuno NAVNET 1824C Operator's Manual

8. MAINTENANCE, TROUBLESHOOTING
8.2

Replacement of Battery on Circuit Board

A lithium battery (Type CR2450-F2 ST2L, Code No. 000-144-941) fitted on a circuit board
inside the display unit preserves data when the equipment is turned off, and its life is about
three years. When its voltage is low the battery icon (
When the icon appears, contact your dealer to request replacement of the battery.
8.3

Replacement of Fuse

The fuse on the power cable protects the equipment from reverse polarity of the ship's
mains and equipment fault. If the fuse blows, find out the cause before replacing it. Use the
correct fuse. Using the wrong fuse will damage the equipment and void the warranty.
1824C, 1834C, 1934C, 1944C: 15A for 12V device, 7A for 24V device
1954C, GD-1920C: 7A for 12/24 V device
Power supply unit PSU-005 (1954C): 15A for 12V device, 7A for 24V device
8-2
WARNING
Ensure battery polarity is correct.
Wrong polarity may cause the battery to
leak.
WARNING
Use the proper fuse.
Use of a wrong fuse can result in damage
to the equipment or cause fire.
) appears at the top of the display.