31-1
31. Maintenance and
Troubleshooting
Periodic checks and maintenance are important for proper operation of any electronic system. This chapter contains
maintenance and troubleshooting instructions to be followed to obtain optimum performance and the longest
possible life of the equipment. Before attempting any maintenance 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 any unit; there are no user-serviceable parts inside. Any repair work should be referred to
a qualified technician.
WARNING
ELECTRICAL SHOCK HAZARD
Do not open the equipment.
Only qualified personnel
should work inside the
equipment.
NOTICE
Do not apply paint, anti-corrosive sealant or
contact spray to coating or plastic parts of
the equipment.
Those items contain organic solvents that can
damage coating and plastic parts, especially
plastic connectors.
31.1 Maintenance
Regular maintenance is essential to good performance. A regular maintenance program should be established and
should at least include the items shown in the table below.
Interval Check point Check and measures Remarks
FURUNO-supplied
LCD monitor and
processor unit
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. Also,
do not use degreaser or antifog solution, as they
can strip the coating from the LCD.
Do not use chemical-
based cleaners to
clean either unit.
They can remove
paint and markings.
When needed
Filter on processor
unit
Clean the filter at the rear of the processor unit if
it becomes dusty.
3 to 6 months Cabling Check that all cabling is firmly connected and is
not damaged.
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