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9. DC Power Jack (P1): Press it snug to the board and solder in the pins on the solder side. Double
check to make sure it’s sitting flush to the board before you solder it (45,46).
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10. Input Filter Capacitor (C14): We will now install the other 100nF ceramic capacitor. This
component will be attached to the solder side of the board, across the DC power jack. Lay the
capacitor down flat on the solder side of the PCB; the leads of the cap should be between the
facing DC jack pins (47). This cap is not polarized; it doesn’t matter which lead is soldered to
which pin. Solder one lead of the cap to a pin of the DC jack (47). Solder the other lead to the
opposite pin of the DC jack (48,49). Clip the leads off of the cap (50,51).
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49
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