Maintenance & Troubleshooting; 11. Maintenance - Furuno GP-3500 Operator's Manual

11. MAINTENANCE &
TROUBLESHOOTING
11.1 Maintenance
Regular maintenance is important for continued performance. Important points to
be checked from time to time are shown below.
Location
Antenna unit
Antenna cable
Display unit connectors
Ground terminal
Display unit
Do not open the equipment.
Hazardous voltage which can cause
electrical shock exists inside the
equipment. Only qualified personnel
should work inside the equipment.
Check point
Check for loosened and
corroded bolts.
Check connection point for
watertightness.
Check connector for tightness
and corrosion.
Check cables for damage.
Check for tight connection.
Check for tight connection and
corrosion.
Dust and foreign material on
the display unit.
WARNING
Tighten loosened bolts. Replace heavily
corroded bolts.
Replace damaged parts.
Tighten loosened connectors.
Clean or replace as necessary.
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. Do not use solvents such as
thinner, acetone or benzene for cleaning.
Remedy
11-1