Troubleshooting - Furuno Mu-190HD Operator's Manual

4. MAINTENANCE, TROUBLESHOOTING
LCD replacement
The life of the LCD is approximately 50,000 hours. The actual numbers 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 below.
Item
FAN1, FAN3 approximately 40,000 hours
FAN2 approximately 60,000 hours
The actual numbers of hours depends on ambient temperature. When the fan cannot be rotated
sufficiently, the message "FAN1(2 or 3) ERROR" is shown. Turn off the power and contact your
dealer to request replacement of the fan.
4.2

Troubleshooting

See the following table to find the possible causes and the actions to restore normal operation. If
repair of the equipment is necessary, report the result of the troubleshooting to the service tech-
nician.
Case
You can not turn on the power.
You can not turn off the power.
No picture
You can not operate any key except
the /BRILL key.
Life
Troubleshooting
• Check the setting for the slide switch. See section 1.7.
• Check the battery voltage with a tester.
• Check the fuse on the power cable.
• Fasten the power cable tightly.
• Hold the
• When the slide switch is set ON, turn off the connected
the external equipment.
• Fasten the cables tightly.
• Check the input signal. See section 3.6.
Cancel the key lock function. See paragraph 3.2.2.
27
Remedy
/BRILL key for eight seconds.