I have a Philips CD930 that I need to convert from 240v to 120v to use in the US. There are two jumper options, and on the PCB it shows one for 240v (which is what is connected now) and one for 220v. On the schematic it shows the 240v and then the other is shown as 220v/117v. The schematic and PCB indicate to use a 200mA fuse rather than the 100mA that's currently present. Can I just change the fuse and jumper or is there something else I'm missing? The 220 and 117 together is what's throwing me off. Thanks!