Furuno Mu-190HD, Operator'S Manual

Page: 35 / 77

4. MAINTENANCE, TROUBLESHOOTING
27
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.
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.
Troubleshooting
Item Life
FAN1, FAN3 approximately 40,000 hours
FAN2 approximately 60,000 hours
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 tester.
• Check the fuse on the power cable.
• Fasten the power cable tightly.
You can not turn off the power.
• Hold the /BRILL key for eight seconds.
• When the slide switch is set ON, turn off the connected
the external equipment.
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.