Furuno GP-3500F - Manual (Page 219)

12-1
12. MAINTENANCE &
TROUBLESHOOTING
12.1 Maintenance
Regular maintenance is important for continued performance. Important points to
be checked from time to time are shown below.
Do not open the equipment.
Hazardous voltage which can cause
electrical shock exists inside the
equipment. Only qualified personnel
should work inside the equipment.
WARNING
Location Check point Remedy
Antenna unit Check for loosened and
corroded bolts. Tighten loosened bolts. Replace heavily
corroded bolts.
Check connection point for
watertightness.
Check connector for tightness
and corrosion.
Antenna cable
Check cables for damage.
Replace damaged parts.
Display unit connectors Check for tight connection. Tighten loosened connectors.
Ground terminal Check for tight connection and
corrosion. Clean or replace as necessary.
Display unit Dust and foreign material on
the display unit. Dust or dirt may be removed from the
cabinet with soft cloth. Water-diluted mild
detergent may be used if desired. DO
NOT use chemical 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 dissolve
the dirt or salt. Change paper frequently
so the salt or dirt will not scratch the
LCD.
Transducer Check the transducer face for
marine life, which can reduce
sensitivity. Remove marine life from the transducer
when drydocking the boat. Use a piece of
wood to remove any marine life.