Furuno FR1500 Mk3 - Manual (Page 27)

2-11
2.5 Change of AC Power Specifications
The AC display unit is shipped from the factory ready for connection to a 100 VAC
power supply. To operate the display unit from 220 VAC, cut jumper wires on the
AC POWER Board and change to fuse F1351 and F1352 to 5A.
1. Turn off the display unit and the switch S2 at the rear of the display unit.
2. Remove the display unit cover.
Figure 2-16 Display unit, right side view
3. Unfasten five screws fixing the heat sink.
4. Unfasten three screws fixing the AC POWER Board.
5. Unplug connectors from the AC POWER Board.
6. Pull out both the heat sink and the AC POWER Board.
Figure 2-17 Display unit, AC POWER Board removed
7. Cut jumper wires JP1, JP2 and JP3. Solder jumper wire to JP4.