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6-1
6. MAINTENANCE &
TROUBLESHOOTING
This chapter provides information necessary for keeping your unit in good
working order and remedying simple problems.
WARNING
Do not open the equipment.
Hazardous voltage which can
cause electrical shock exists
inside the equipment. Only
qualified personnel should
work inside the equipment.
6.1 Preventive Maintenance
Regular maintenance is important for optimum performance. A maintenance
schedule should be established and should at least include the items below.
Maintenance program
Item Check point Remedy
Control unit connector Check for tight connection. Tighten loosened connectors.
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 lens
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.
Ground terminal Check for tight connection and
corrosion.
Clean or replace ground wire as
necessary.