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14
3 MAINTENANCE, TROUBLESHOOTING
WARNING
ELECTRICAL SHOCK HAZARD
Do not open the equipment.
Only qualified personnel
should work inside the
equipment.
3.1 Maintenance
3.1.1 Preventive maintenance
Check the following points regularly to
maintain performance.
•
Check that the connectors on all units of
the system are firmly fastened and free of
rust. Clean if soiled or corroded.
•
Check that all ground wires are tightly
fastened.
•
Dust and dirt on the display unit including
the screen may be removed with a soft
cloth. Do not use chemical cleaners to
clean the display unit; they can remove
paint and markings.
3.1.2 Transducer maintenance
Marine life (barnacles, etc.) adhering to the
transducer face will reduce sensitivity.
Periodically remove any marine life from
the transducer face with fine sandpaper or
a piece of wood.
CAUTION
Do not paint the transducer.
Painting will affect performance.
3.1.3 Fuse replacement
Fuses in the units of the system protect the
electrical circuitry from burning by
overcurrent. If the equipment cannot be
energized check the fuse in the power
cable connected to the display unit. Locate
the cause before replacing the fuse.
Unit
Rating,
Qty
Type,
Code No.
Location
Display
Unit
1A,
2 pcs.
FGMB 1A
125 VAC,
000-114-8
05
Fuse
holder in
power
cable
Distribution
Box
3A,
2 pcs.
FGBO 3A
250 VAC
000-549-
021
Transceiver
Unit
1A,
2 pcs.
FGBO 1A
250 VAC,
000-549-
019
Inside
unit
CAUTION
Use the proper fuse.
Use of a wrong fuse can cause fire or
equipment damage and void the warranty.