Use the PCB overlay diagram (Fig.3) and the photos as a guide during construction. The Pseudo-random Number Generator is built on a PCB coded 16106191, which measures 91.5 × 63mm and is available form the PE PCB Service. If you are fitting CON2, the optional surface-mounted mini-USB socket for power, do this first. Apply some solder flux to the pads on the PCB and locate the socket with its pins into the holes on the PCB. Solder one of the side mechanical tabs in place and ensure that the pins line up with their pads before proceeding.
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