How to Change to 12V Power Supply - iFixit 수리 안내서

필요한 것

1 단계 Unplug modem

Remove the modem so only the open-storm board remains. This is to prevent accidentally frying the modem.

2 단계 Remove jumpers

Remove the JP1 and JP2 jumpers

3 단계 Plug in power

Plug in the 12V power source

4 단계 Measure jumpers

Using a multimeter, touch the ground to any of the ground pinouts on the board and measure the JP1 and JP2 jumpers
You should see 12V on the middle and bottom pin of JP1 and 12V on the bottom pin of JP2. The top pin of JP2 should be ~ 3.6V

5 단계 Add JP2 jumper

If ~ 3.6 V measured on top JP2 jumper, then add jumper in new position.
JP2 powers the modem so it's very important that it is not supplied the higher voltage, otherwise the modem will fry.

6 단계 Repower board and measure jumpers

Plug in the 12V power supply again and see if the JP2 jumper measures ~ 3.7V

7 단계 Test the modem

Unplug the power source and plug in the modem.
Be vary careful to not skip a modem pin when plugging in and that it is oriented in the correct direction.
Power back on the board and wait to see a green light on the modem (indicating that it is properly powered and trying to connect to the internet).

결론

To revert back to 3.7V power, flip back the 2 jumpers to how they were at the start of the guide.

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