Furuno NX-700B - Manual (Page 42)

3. MAINTENANCE & TROUBLESHOOTING
3-2
3.2 Replacement of Fuse, Battery and Thermal
Paper
Fuse
The fuse inside the receiver unit protects the equipment from overcurrent or
reverse polarity. If the fuse blows, contact your dealer about replacement.
Name Type Code No.
Fuse FGMB 125V 2A PBF 000-157-479-10
WARNING
Use the proper fuse.
Use of a wrong fuse can result in damage
to the equipment or cause fire.
Battery
A battery is installed inside the display unit, and it preserves data when the
power is turned off. The life of the battery is about 5-10 years, and its voltage is
checked when the power is turned on. When its voltage is low, the BATTERY
(
) icon appears on the display to alert you. When this happens, contact your
dealer to request replacement of the battery.
Note:
When the battery is dead, all default settings are restored.
Name Type Code No.
BATT CR2450-F2ST2L 000-144-941
WARNING
Ensure battery polarity is correct.
Wrong polarity may cause the batteries to
explode.
LCD Display
The life of the LCD is approx. 20,000 hour. When the LCD has expired, the
brilliance cannot be raised.