Furuno FS-2575, Руководство оператора

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11. MAINTENANCE & TROUBLESHOOTING
11-3
Item
Check point Remedy/Remarks
Antenna
coupler
•
Check condition of antenna terminal,
ground, coaxial cable and control cable.
•
Check that coupler lid and cable glands
are firmly secure.
• Check for physical damage, corrosion
and salt water deposits.
•
Tighten loosened connections.
•
Fasten lid firmly and evenly to prevent
water leakage.
•
Replace if damaged.
Control unit • Check ground connection, control cable,
and external equipment.
• Confirm that there are no objects on the
top of the control unit.
•
Remove dust from control unit with soft
cloth.
Note: Do not use chemical cleaners to
clean the control unit; they can remove
paint or markings or deform the
equipment.
• Tighten loosened connections; remove
foreign material from connectors.
• Remove any objects.
•
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.
Transceiver
unit
•
Check connection at signal cable,
coaxial cable, control cable, power
cable, and navigator.
• Confirm that there are no objects on the
top of the cabinet.
•
Tighten loosened connections; remove
foreign material from connectors.
• Remove any objects.
Power
supply
• Check that the supply voltage at
transmission is within the rated range
(21.6 to 31.2 VDC at the power
connector).
• If not within the range, check ship’s
mains or ship’s battery. Low voltage
may cause erratic operation.
11.3 Simple Troubleshooting
The table below provides possible problems and the means with which to restore normal
operation. If normal operation cannot be restored, do not attempt to check inside the
equipment. Any servicing should be referred to a qualified technician.
Problem Probable cause Remedy
Power cannot be
turned on.
•
Mains switchboard can be off.
•
(DC) voltage is too high.
•
Battery can have discharged, or
poor contact at terminals.
•
Turn on the mains switchboard.
•
Check supply voltage.
•
Recharge battery and tighten battery
terminals.
Display indications
do not appear.
Screen brilliance is too low. Press the BRILL key to adjust the
screen brilliance.
Power is on but no
sound from main
speaker.
Main speaker is off. Press the key to turn on the main
speaker.
Poor articulation Wrong class of emission can be in
use.
Class of emission should match that of
incoming signal.
Output power
reduced to LOW
Power is automatically reduced to
protect against overheating due to
continuous transmission.
Wait until the unit returns to normal
condition.
Antenna coupler
cannot tune
antenna
•
Antenna can be disconnected or
shorted to ground.
•
Antenna is out of tunable length.
•
Poor grounding of antenna
coupler.
•
Breaker in coupler has tripped.
•
Connection cable loosened or
disconnected.
•
Check antenna connection.
•
Recommended length is 10 to 18
meters.
•
Check coupler ground.
•
Checks mains voltage and polarity.
If normal, reset breaker.
•
Check cable.