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6. MAINTENANCE & TROUBLESHOOTING
6-2
6.1 Preventive Maintenance
Regular maintenance is important for optimum performance. A maintenance program should be
established and should at least include the items shown in the table below.
Maintenance
Interval Item Check point Remedy
When
necessary
LCD The LCD will, in time,
accumulate a coating of
dust which tends to dim
the picture.
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. They may remove paint and
markings.
3 to 6
months
Ground terminal
on display unit
Check for tight
connection and rust.
Tighten or replace as necessary.
Display unit
connectors
Check for tight
connection.
Tighten if loosened.
Exposed nuts
and bolts on
antenna unit
Check for corroded or
loosened bolts.
Clean and repaint as necessary. Sealing
compound may be used in place of paint.
Antenna
radiator
Check for dirt and cracks
on radiator
surface.
Clean radiator surface with freshwater-
moistened cloth. Do not use plastic sol-
vents for cleaning.