Furuno CSH-5 MARK-2 - Manual (Page 36)

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9. WARNING
Overvoltage Warning
If the supply voltage rises about 20% to over the rated value, the
overvoltage detection circuit is actuated. The following warning flick-
ers at the center of the screen and an alarm sounds.
OVERVOLTAGE!
If this occurs, retract the transducer, turn the POWER off and check
the ship’s mains (and the stepdown transformer if provided).
Unretracted Transducer Warning
When the transducer can not be completely retracted within 35 sec-
onds after pressing the
TRANSDUCER “ ” switch, the following
warning flickers at the center of the screen and an alarm is released.
XDCR NOT RETRACTED!
If this occurs, do the following.
1. The POWER switch can not be turned off because the transducer
can not be retracted. Turn off the main breaker for the transceiver
unit to stop operation.
2. Confirm that the net is not entwined around the transducer.
3. Confirm that the breaker inside the raise/lower control box mounted
on the hull unit is “ON”.
4. Check the mains fuse in the transceiver unit.
5. Apply the power again and confirm that the transducer is retracted
into the tank. If not, the main shaft of the hull unit may be bent.
Cut off the power again and manually raise the transducer up to
the highest position by using the hand crank attached to the hull
unit.