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12-1
12. MAINTENANCE &
TROUBLESHOOTING
12.1 Maintenance
Regular maintenance is essential for good
performance. A maintenance program should
be established and should at least include
the items listed in below.
Do not open the equipment.
Hazardous voltage which can
cause electrical shock, burn or
serious injury exists inside the
equipment. Only qualified
personnel should work inside
the equipment.
WARNING
Recommended maintenance program
Item Check point Remedy
Antenna 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 pats.
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 may be removed with a soft cloth,
if necessary anti-static cleaner may be
used. Never use chemical solvents to
clean the display; they can remove
paint and markings.
LCD Dust and foreign material on the screen.
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.