Furuno GP-3700F, Operator'S Manual

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13-1
13. MAINTENANCE,
TROUBLESHOOTING
This chapter contains maintenance and troubleshooting instructions to help you keep
optimum performance and the longest possible life of the equipment. Before attempt-
ing any maintenance or troubleshooting procedure, please review the safety informa-
tion below. If you cannot restore normal operation after following the troubleshooting
procedures, do not attempt to check inside any unit; there are no operator-serviceable
parts inside. Refer any repair work to a qualified technician.
13.1 Maintenance
Check the items shown in the table below regularly to prevent unnecessary trouble.
Check item Check point Remedy
Display unit Dust or dirt on the dis-
play Wipe it carefully to prevent scratching. For difficult to re-
move dirt or salt deposits, use a cloth made wet with water
and neutral detergent (less than 1% detergent). Squeeze
the cloth dry then clean the display. When the display is
clean, gently wipe the display with a clean, soft, dry cloth,
to prevent scratching.
Antenna unit Loosened and corroded
bolts
Tighten loosened bolts. Replace heavily corroded bolts.
Antenna
cable Connection point water-
tightness Replaced damaged parts.
Connector tightness
and corrosion
Cable damage
Display unit
connectors Connector tightness Re-tighten if necessary.
Ground
terminal Connection tightness
and corrosion Replaced if corroded.
Transducer Transducer face clean-
liness Marine life on the transducer face can reduce sensitivity.
Check the transducer for marine life when the boat is put in
drydock. Use a piece of wood to remove any marine life.
WARNING
ELECTRICAL SHOCK HAZARD
Do not open the equipment.
Only qualified personnel are
allowed to work inside the
equipment.
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.
NOTICE