Furuno FCV-620 - Manual (Page 32)

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3. MAINTENANCE, TROUBLE-
SHOOTING
3.1 Maintenance
Regular maintenance is essential for good
performance. Checking the items listed in the
table below monthly will help keep your equip-
ment in good shape for years to come.
3.2 Cleaning the Display
Unit
Dust or dirt may be removed from the cabinet
with a soft cloth. Water-diluted mild detergent
may be used if desired. DO NOT use chem-
ical cleaners to clean the display unit; they
may remove paint and markings. Wipe the
LCD carefully to prevent scratching, using
tissue paper and an LCD cleaner. To remove
dirt or salt deposits, use an LCD cleaner,
wiping slowly with tissue paper so as to dis-
solve the dirt or salt. Change paper frequently
so the salt or dirt will not scratch the LCD. Do
not use solvents such as thinner, acetone or
benzene for cleaning. Also, do not use
degreaser or antifog solution, as they can
strip the coating from the LCD.
3.3 Transducer Maintenance
Marine life on the transducer face will result in
a gradual decrease in sensitivity. Check the
transducer face for cleanliness each time the
boat is dry-docked. Carefully remove any
marine life with a piece of wood or fine-grade
sandpaper.
3.4 Replacing the Fuse
The fuses (Type: FGBO-A 125V 2A, Code
No.: 000-155-849-10) in the power cable pro-
tect the system from reverse polarity of the
power supply and equipment fault. If a fuse
blows, find the cause before replacing it.
Using the wrong fuse will damage the unit and
void the warranty.
3.5 Battery Voltage Alert
A battery icon appears when the battery
voltage is too high or too low.
Checking
Item Action
Transducer
cable Check cable for damage.
Power cable,
transducer cable
plug Check that they are tightly
fastened. Refasten if nec-
essary.
Display unit
ground Check for corrosion. Clean
if necessary.
Power supply
voltage Check voltage. If out of
rating correct problem.
WARNING
ELECTRICAL SHOCK HAZARD
Do not open the equipment.
Only qualified personnel should
work inside the equipment.
IMPORTANT
Do not apply paint, anti-corrosive
sealant or contact spray to coating
or plastic parts.
Those items contain organic solvents
that can damage coating and plastic
parts, especially plastic connectors.
Battery icon and meaning
Icon Meaning
Voltage is lower than 10 VDC. If the
voltage goes below 9 V, the equipment
is automatically turned off.
Voltage is higher than 32 VDC. If the
voltage goes higher than 33 V, the
equipment is automatically turned off.
WARNING
Use the proper fuse.
Fuse rating is shown on the cable.
Use of a wrong fuse can result in fire and
damage the equipment.