Troubleshooting - Furuno LCD DISPLAY MU-155C Operator's Manual

Fuse replacement
The fuse in the power cable protects the equipment from internal fault and overcurrent. If
the fuse blows, find the cause before replacing it. If the fuse blows again after replacement,
request service.
WARNING
Use the proper fuse.
Use of a wrong fuse can cause fire or
damage to the equipment.
Battery replacement
The remote controller has two AA batteries.
If the distance from which the remote
controller can be operated has decreased,
change the battery.
Note: Replace all batteries together. Do
not mix old and new batteries.

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.
Ship's battery voltage too high
Fuse has blown.
Cable between MU-155C and external
equipment has loosened.
Power cable has loosened.
You can confirm which signals are currently input in the SYSTEM menu.
RGB1
INFRARED REMOTE
DEFAULT RESET
INFORMATION
RGB1 : 1280x1024
RGB2 : 640x480
DVI
VIDEO1: NTSC
VIDEO2: PAL
VIDEO3: NO SIGNAL
PROGRAM NO. *****
Troubleshooting table
Reason for no picture
RGB2 DVI VIDEO1
A A
NO
fH: 80KHz fV: 75Hz
fH: 31KHz fV: 60Hz
: NO SIGNAL
SYSTEM menu
Ship's power source
12 VDC
24 VDC
Ensure battery polarity is correct.
Wrong polarity may cause the batteries to
explode.
Check battery voltage.
Replace fuse.
Refasten cable.
Refasten cable.
VIDEO2 VIDEO3 OSD
19
Rating of fuse
10A
5A
WARNING
Remedy
SYSTEM