Furuno MU-190 User Manual

4.  MAINTENANCE, TROUBLESHOOTING

See the following table to find the possible causes of trouble and the actions to restore normal 
operation. If repair of the equipment is necessary, report the result of the troubleshooting to the 
service technician.

FAN1

Approximately 40,000 hours

MFB52A-12HA-001

000-172-023-10

FAN4

Approximately 60,000 hours

LQ0DDB0094

000-172-144-10

You can not turn 
on the power.

•  Check if the power switch at the bottom of the display is on.
•  Check the setting of the slide switch.
•  Check the battery voltage with a multimeter.
•  Check the fuse at the bottom of the display.
•  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 

to turn off the monitor.

No picture

•  Fasten the cables tightly.
•  Check the input signal. See section 3.6.
•  Check the setting for DISP selection window. See section 3.4.
•  Check if the display brilliance is not set to minimum.

MFB52A-12HA-001, 26S0028 (Fan (FAN1), Wind direction: top-left)

LQ0DDB0094, 26S0048 (Fan motor assembly (FAN4), Wind direction: upward)

ESSIP33A-1C 
(AD board)

26P0013

26P0023

OZP-120-12/15-J06

LQ190E1LX51, 
26S0027 (LCD)

Model
Unit

MU-190

Monitor unit MU-190

OZP-120-12/15-J06

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26P0023 (PSW board)
ESSIP33A-1C (AD board)
26P0013
LCD
LQ190E1LX51, 26S0027
FAN
MFB52A-12HA-001, 26S0028 (FAN1)
LQ0DDB0094, 26S0048 (FAN4)

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