Furuno 1953C-BB, GD-1900C-BB, 1943C-BB, 1933C-BB Antenna Type, Power supply unit, cover removed

ANTENNA TYPE

Select the antenna type connected to your display unit. Default setting is “F”. Select the antenna type referring to the table shown below.

After selecting type, press the [ENTER] knob.

Your unit	Setting
MODEL1823C-BB	A
MODEL1833C-BB	B
MODEL1933C-BB	F
MODEL1943C-BB	G
MODEL1953C-BB	H

TUNING

MODEL 1953C-BB: Go to “Tuning for 1953C-BB power supply unit”, and then “Antenna

	tuning”.
Other models:	Go to “Antenna tuning”.

Tuning for 1953C-BB power supply unit

For MODEL1953C-BB, first tune the power supply unit to adjust the tuning point of the tuning indicator.

1.Open the power supply unit cover.

2.On the RADAR SETUP menu, select STOP at ANTENNA ROTATION.

3.Close the menu, and then transmit the radar with the range more than 6 nm.

4.Flip the SW1 on the POWER Board upward (for tuning position).

5.Adjust R36 potentiometer clockwise so that LED CR13 lights in the highest brilliance.

Also connect a multimeter to TP5 (+) and TP (-), and then adjust R36, to show maximum voltage on the multimeter.

6.Flip the SW1 downward (normal position, default setting).

7.Reassemble the power supply unit.

8.Go to “Antenna tuning” on the next page.

POWER Board

19P1006

TP5 TP2

CR13

R36

Upward

SW1

Downward

Power supply unit, cover removed

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