11-1
11. MAINTENANCE,
TROUBLESHOOTING
This section provides maintenance and troubleshooting procedures that the user can
follow to get optimum performance from the equipment. Before attempting any main-
tenance or troubleshooting procedure please review the safety information below. If
you cannot restore normal operation after following the troubleshooting procedures,
do not attempt to check inside the equipment; have a qualified technician check the
set.
11.1 Maintenance
Check the items shown in the table below regularly to prevent unnecessary trouble.
Check
item
Check point Remedy
Antenna
unit
(option)
Check for loosened and
corroded bolts.
Tighten loosened bolts. Replace heavily cor-
roded bolts.
Cables Check that cables are tight-
ly fastened, free of corro-
sion and not damaged.
Connect cable if it has loosened. Replace
damaged cables.
Ground
terminal
Check for tight connection
and rust.
Fasten if loosened. Remove rust if present.
Display
unit
Dust on the
cabinet, LCD
Remove dust from the cabinet with a dry clean
cloth.
Wipe the LCD carefully to prevent scratching,
using tissue paper and an LCD cleaner. To re-
move dirt or salt deposits, use an LCD clean-
er, wiping slowly with tissue paper so as to
dissolve the dirt or salt. Change paper fre-
quently so the salt or dirt will not scratch the
LCD. Do not use commercial cleaners to
clean the equipment. Those cleaners can re-
move paint and markings.
IMPORTANT
Do not apply paint, anti-corrosive sealant
or contact spray to coating or plastic parts.
Those items contain organic solvents that can
damage coating and plastic parts, especially
plastic connectors.
WARNING
ELECTRICAL SHOCK HAZARD
Do not open the equipment.
Only qualified personnel can work
inside the equipment.
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