![Furuno FM-4850 Скачать руководство пользователя страница 85](http://html1.mh-extra.com/html/furuno/fm-4850/fm-4850_operators-manual_2349744085.webp)
MAINTENANCE AND TROUBLE
SHOOTING
FM-4850 Operator’s Manual
76
14.2 Troubleshooting
When the FM-4850 does not work properly, you can follow the following
troubleshooting procedures to fix it.
Problem
Possible Cause
Solution
The radio cannot
be turned on.
No DC voltage to
the radio, or blown
fuse
Step 1
Check the 10.8 to 15.6
VDC battery
connections and the
fuse.
Step 2
Long press the
On/Off
key to turn on the
handset.
The radio blows
the fuse when
connected to the
power supply.
Reversed polarity
of power wires
Step 1
Make sure the red wire
is connected to the
positive (+) battery
post, and the black wire
is connected to the
negative (-) battery
post.
Step 2
Check the power cable
for DC voltage and
replace the fuse (8A
250V).
The speaker
makes popping or
whining noise
while the engine
of the ship runs.
Engine noise
Step 1
Reroute the DC power
cable of the radio away
from the engine.
Step 2
Add a noise suppressor
on the power cable.
Step 3
Change to resistive
spark plug wires and/or
add an alternator whine
filter.
The sound is not
emitted from the
speaker of the
handset.
Accessory cable
Step 1
Check that the handset
is physically connected.
Step 2
Check whether the
handset is broken or
short-circuited.
Содержание FM-4850
Страница 1: ...MARINE VHF RADIOTELEPHONE FM 4850 OPERATOR S MANUAL www furuno com Model...
Страница 118: ...FM 4850 Operator s Manual PACKING LIST 109 PACKING LIST...
Страница 119: ...PACKING LIST FM 4850 Operator s Manual 110...
Страница 120: ...FM 4850 Operator s Manual PACKING LIST 111...
Страница 121: ...PACKING LIST FM 4850 Operator s Manual 112...
Страница 123: ...OUTLINE DRAWINGS FM 4850 Operator s Manual 114 HS 4800 Desktop mounting and wall mounting Weight 0 3 kg...
Страница 124: ...FM 4850 Operator s Manual OUTLINE DRAWINGS 115 SP 4800 Desktop mounting Weight 0 76 kg...
Страница 125: ...OUTLINE DRAWINGS FM 4850 Operator s Manual 116 SP 4800 Flush mounting Weight 0 76 kg...
Страница 126: ...FM 4850 Operator s Manual OUTLINE DRAWINGS 117...
Страница 127: ...OUTLINE DRAWINGS FM 4850 Operator s Manual 118...
Страница 130: ...FM 4850 Operator s Manual TOOLS 121...