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7. MAINTENANCE, TROUBLESHOOTING
7-2
7.2 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 (10A for 12 V, 5A for 24 V). Using the wrong
fuse will damage the equipment and void the warranty.
CAUTION
Use the proper fuse.
Use of a wrong fuse can cause fire or
damage the equipment.
7.3 Replacement of Battery
A battery 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 (
) appears at the top of the display. When the icon appears,
contact your dealer to request replacement of the battery.
Parts Name Type Code No.
Lithium battery CR2450-F2 ST2L 000-144-941