Furuno 1824C Installation Manual page 44

Jumper block, slide switch setting
The jumper block JP1 and slide switch S112 on the PWR board (03P9419) must be set
according to radar model. Open the unit, locate JP1 and S112 and set them as below.
Jumper block, slide switch Function
JP1
S112
Slide switch S112
(Downward position
for this radar)
FR-8252
S112
MODEL1964C
Power supply unit, inside view
Enables/disables motor slow start circuit.
TUNE voltage selector (0-12 V, 0-32 V)
2-8
Jumper block JP1
("open" for this radar;
leave the dummy
connector attached)
Setting
Open (enable)
Downward position
(0-32 V)