Furuno MU-17OC Manuel D’Utilisation

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Fuse replacement 
 
The fuse in the fuse holder protects the equipment from internal fault. If the fuse blows, find 
the cause before replacing it. If the fuse blows again after replacement, request service. 
 
Ship’s power source 
Rating of fuse 
12 VDC 
10 A 
24 VDC 
5 A 
 
 
 
Battery replacement 
 
The remote controller has two AA 
batteries. If the distance from which the 
remote controller can be operated has 
decreased, change the batteries. 
 
Note: Use the two AA batteries. Replace 
all batteries together. Do not mix 
old and new batteries. 
 
 
 
 
LCD replacement 
 
The life of the LCD is about 40,000 hours. When the brilliance cannot be raised sufficiently, 
replace the LCD. 
 
 
5.2 Troubleshooting 
The table below provides troubleshooting procedures to use when no picture appears. If 
you cannot restore the picture, do not attempt to check inside the equipment – there are no 
user serviceable parts inside. Refer any work to a qualified technician. 
Troubleshooting table 
Reason for no picture 
Remedy 
Ship’s battery voltage too high. 
Check battery voltage. 
Fuse has blown. 
Replace fuse. 
Cable between MU-170C and external 
equipment has loosened. 
Refasten cable. You can 
confirm which signals are 
currently input in the 
SYSTEM menu (see the 
figure on the next page). 
Power cable has loosened from the 
terminal board. 
Refasten cable. 
WARNING
Use the proper fuse.
Use of a wrong fuse can cause fire or
damage to the equipment.
WARNING
Ensure battery polarity is correct.
Wrong polarity may cause the batteries
to explode. 
Dispose of used batteries as industrial
waste. Follow the appropriate regulations
for the disposal of industrial waste.