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6-1
6. MAINTENANCE,
TROUBLESHOOTING
This chapter provides the maintenance and troubleshooting information for the oper-
ator. If you cannot restore normal operation, do not try to check inside the equipment.
Refer any repair work to a qualified technician.
6.1 Maintenance
Periodic maintenance is important to keep good performance. Check the system at
regular intervals with the procedures shown in the table below.
Item Check point Action
Cables Check that all cables are
tightly fastened. Check
the cables for corrosion
and rust.
Connect loosened cables.
Replace any damaged cables.
Cabinet Dust on the cabinets Remove dust with a dry, clean cloth. Do not
use commercial cleaners to clean any part
of the equipment. Commercial cleaners can
remove paint and markings.
LCD
(display unit)
Dust on the LCD Wipe the LCD carefully to prevent scratch-
ing, 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 commercial cleaners
to clean any part of the equipment. Com-
mercial cleaners can remove paint and
markings.
Transducer Marine life and growth on
the transducer
Marine life and growth on the transducer
can reduce sensitivity. When the ship is
dry-docked, carefully remove any marine
life and growth from the transducer. Paint
the transducer yearly with anti-fouling paint
(no other type of paint is permitted).
WARNING
ELECTRICAL SHOCK HAZARD
Do not open the equipment.
This equipment uses high
voltage that can cause
electrical shock.
0nly qualified persons can
work inside the equipment.
NOTICE
D
o not apply paint, anti-corrosive
sealant or contact spray to plastic
parts or equipment coating.
Those items contain products that can
damage plastic parts and equipment
coating.