Furuno MU-190, Руководство оператора

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4. MAINTENANCE,
TROUBLESHOOTING
4.1 Maintenance
Routine maintenance
Regular maintenance is important for good performance. Check the following on a regular basis
to keep the equipment in good condition.
Fuse replacement
The fuse in the fuse holder at the bottom of the display
protects the equipment from overvoltage and overcurrent.
If the fuse blows, find the cause before you replace it. If the
fuse blows again after replacement, request service.
LCD replacement
The life of the LCD is approximately 50,000 hours. The actual number of hours depends on am-
bient temperature and humidity. When the brilliance cannot be raised sufficiently, replace the
LCD.
Fan replacement
The life of the each fan is shown in the table on the next page. The actual number of hours de-
pends on ambient temperature. When the fan does not rotate sufficiently, the message "Fan re-
placement" is shown. Turn off the power and call for service to request replacement of the fan.
• Check that the connectors at the bottom of the monitor unit are tightly fastened.
• Check the ground wire and ground terminal for rust. Clean if necessary. Confirm that the ground
wire is tightly fastened.
• Remove dust and dirt from the monitor unit with a dry, soft cloth. Do not use chemical cleaners to
clean any part of the monitor unit. They can remove paint and markings.
• Wipe the LCD carefully to prevent scratching, using an LCD cleaning cloth (supplied as accesso-
ry). 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.
Name Type Code Number Remarks
Glass Tube Fuse FGBO-A 250V 5A PBF 000-155-840-10
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.
NOTICE
WARNING WARNING
Use the proper fuse.
Use of a wrong fuse can cause
fire or damage to the equipment.