Furuno MU-150HD - Manual (Page 35)

4. MAINTENANCE, TROUBLESHOOTING
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LCD replacement
The life of the LCD is approximately 60,000 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 fan is approximately 40,000 hours. The actual numbers of hours depends on ambi-
ent temperature. When the fan cannot be rotated sufficiently, the message "FAN1 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.
Troubleshooting
Case Remedy
You can not turn on the power. • Check the setting for the slide switch. See section 1.7.
• Check the battery voltage with a multimeter.
• Check the fuse on the power cable.
• Fasten the power cable tightly.
You can not turn off the power.
• Press and hold the /BRILL key for eight seconds.
• When the slide switch is set to ON, turn off the external
equipment connected.
No picture • Fasten the cables tightly.
• Check the input signal. See section 3.6.
You can not operate any key except
the /BRILL key.
Cancel the key lock function. See paragraph 3.2.2.