Furuno 1763c ユーザーズマニュアル

Magnetron heater voltage is formed on the PTU/MD Board of the antenna unit, and 
preadjusted at the factory. Therefore no adjustment is required. However, check magnetron 
heater voltage for confirmation as follows: 

The antenna radiator may be 
caught by the screw holes in 
the radome cover.
If you feel the radiator is caught 
by the screw holes, lower 
the cover, turn it a few degree 
and then lift it again.

Screw holes
(4 places)

 

1.  Open the antenna unit. 
2.  Turn on the power. Do not transmit the radar. 
3.  Connect a multimeter, set to 10VDC range, appropriate position on the MD 

(1722/1722C/1723C/1742/1742C/1752/1752C/1753C/1762/1762C/1763C) or PTU 
(1732/1732C/1733C) Board in the antenna unit. Refer to the table in below. 

4.  Confirm that the multimeter indication is appropriate. 
 

 

MODEL 

1722/1722C/ 

1723C 

MODEL 

1732/1732C/ 

1733C 

MODEL 

1742/1742C 

MODEL 

1752/1752C/ 

1753C 

MODEL 

1762/1762C/ 

1763C 

TP804#6 (+) 
and #4 (-) on 
MD Board 

TP802#4 (+) 
and #6 (-) on 
PTU Board 

TP804#3 (+) 
and #2 (-) on 
MD Board 

J811#3 and #5 
(GND) on MD 
Board 

J825#4 and #6 
(GND) on RTB 
Board 

7.9 to 8.1 V 

7.4 to 7.6 V 

8.0 to 8.2 V 

7.6 V 

7.4 to 7.6 V 

VR801 on MD 

Board 

R106 on PTU 

Board 

VR801 on 
MD Board 

VR801 on   
MD Board 

VR801 on MD 

Board